# Modular 38999 Cable Tester

## Description

Expandable automated cable continuity tester with swappable connector adapters, initially supporting MIL\-DTL\-38999 Series III shell 17, insert 17\-35 with 55 contacts\.

## Project Details

- **Owner:** asbestostiling
- **Created:** 8/27/2026
- **Last Updated:** 8/27/2026
- **Visibility:** Public

## Key Components

### D8 — [SMF5\.0A](https://flux.ai/lcsc/smf5p0a~bz6b.md)

- Package or Case Code: SOD\-123FL\_L2\.8\-W1\.8\-LS3\.6\-RD
- JLCPCB Part Class: Extended Part
- Role Details: USB VBUS surge clamp after fuse
- Datasheet URL: https://www\.lcsc\.com/datasheet/C2990427\.pdf?spm=wm\.sxq\.inf\.ggs&lcsc\_vid=T1kIXgFeT1NaU1RXQFBbUlUHT1cKU1NXFVBeX1VSTlAxVlNRTlBbUVFXRldaXzsOAxUeFF5JWBYZEEoKFBINSQcJGk4dAgUUFAk%3D
- LCSC Part Number: C2990427
- Diode Type: Schottky Diode
- Part Type: TVS
- Max Reverse Voltage: 5V
- Manufacturer Name: Liown\(里阳半导体\)
- Role: Protection
- Manufacturer Part Number: SMF5\.0A
- Forward Voltage: 0\.45V to 0\.55V \(at 1A\)V
- Functional Group: USB\-C 5V Power

**Pins:**
- 1 [pin 1]
- 2 [pin 2]

### DS1 — [HDSP\-5503](https://flux.ai/adrian95/hdsp-5503~s80.md)

- Manufacturer Part Number: HDSP\-5503
- Datasheet URL: https://www\.mouser\.com/datasheet/2/678/AV02\_1107EN\_2022\_12\_08\-1827817\.pdf
- Role: Display
- Role Details: Contact number tens digit
- Part Type: Display Module
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Name: Broadcom Limited
- Functional Group: Display and Selection

**Pins:**
- ANODE\_A [pin 7]
- ANODE\_B [pin 6]
- ANODE\_C [pin 4]
- ANODE\_D [pin 2]
- ANODE\_DP [pin 5]
- ANODE\_E [pin 1]
- ANODE\_F [pin 9]
- ANODE\_G [pin 10]
- COMMON\_CATHODE\_1 [pin 3]
- COMMON\_CATHODE\_2 [pin 8]

### DS2 — [HDSP\-5503](https://flux.ai/adrian95/hdsp-5503~s80.md)

- Role: Display
- Manufacturer Part Number: HDSP\-5503
- Datasheet URL: https://www\.mouser\.com/datasheet/2/678/AV02\_1107EN\_2022\_12\_08\-1827817\.pdf
- Role Details: Contact number ones digit
- Part Type: Display Module
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Name: Broadcom Limited
- Functional Group: Display and Selection

**Pins:**
- ANODE\_A [pin 7]
- ANODE\_B [pin 6]
- ANODE\_C [pin 4]
- ANODE\_D [pin 2]
- ANODE\_DP [pin 5]
- ANODE\_E [pin 1]
- ANODE\_F [pin 9]
- ANODE\_G [pin 10]
- COMMON\_CATHODE\_1 [pin 3]
- COMMON\_CATHODE\_2 [pin 8]

### F1 — [SMD050F\-2](https://flux.ai/adrian95/smd050f-2.md)

- Datasheet URL: https://www\.littelfuse\.com/assetdocs/littelfuse\-ptc\-smd\-datasheet?assetguid=e664881a\-0c68\-4836\-928b\-7ed2f0c2a6da
- Part Type: Circuit Protection Devices
- Manufacturer Part Number: SMD050F\-2
- Role: Protection
- Functional Group: USB\-C 5V Power
- Mount: Surface Mount
- Role Details: 0\.5 A hold; estimated design load under 0\.15 A
- Manufacturer Name: Littelfuse
- License: https://creativecommons\.org/licenses/by/4\.0/

**Pins:**
- \~ [pin 2]
- \~ [pin 1]

### J1 — [USB4235\-03\-C](https://flux.ai/cherepanyadima/usb4235-03-c~sn.md)

- Part Type: Connectors
- Datasheet URL: https://gct\.co/files/specs/usb4235\-spec\.pdf
- Manufacturer Name: GST
- Manufacturer Part Number: USB4235\-03\-C\_REVA
- Functional Group: USB\-C 5V Power
- Role: Power Input
- Role Details: USB\-C sink, no data use

**Pins:**
- CC1 [pin A5]
- CC2 [pin B5]
- DN1 [pin A7]
- DN2 [pin B7]
- DP1 [pin A6]
- DP2 [pin B6]
- GND\_A [pin A1]
- GND\_A\_\_1 [pin A12]
- GND\_B [pin B1]
- GND\_B\_\_1 [pin B12]
- SBU1 [pin A8]
- SBU2 [pin B8]
- SHIELD [pin SH1]
- SHIELD\_\_1 [pin SH2]
- VBUS\_A [pin A4]
- VBUS\_A\_\_1 [pin A9]
- VBUS\_B [pin B4]
- VBUS\_B\_\_1 [pin B9]

### J2 — [3020\-20\-0300\-00](https://flux.ai/adrian95/3020-20-0300-00.md)

- Datasheet URL: https://cnctech\.us/pdfs/3020\-XX\-0300\-00%20\(9T\)\.pdf
- Role: Adapter Interface
- Part Type: Connectors
- Manufacturer Part Number: 3020\-20\-0300\-00
- Mount: Surface Mount
- Manufacturer Name: CNC Tech
- Symbol Style: parametric\-v1
- Functional Group: Swappable Adapter Boundary
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role Details: Contacts 01 through 20

**Pins:**
- 1 [pin 1]
- 10 [pin 10]
- 11 [pin 11]
- 12 [pin 12]
- 13 [pin 13]
- 14 [pin 14]
- 15 [pin 15]
- 16 [pin 16]
- 17 [pin 17]
- 18 [pin 18]
- 19 [pin 19]
- 2 [pin 2]
- 20 [pin 20]
- 3 [pin 3]
- 4 [pin 4]
- 5 [pin 5]
- 6 [pin 6]
- 7 [pin 7]
- 8 [pin 8]
- 9 [pin 9]

### J3 — [3020\-20\-0300\-00](https://flux.ai/adrian95/3020-20-0300-00.md)

- Datasheet URL: https://cnctech\.us/pdfs/3020\-XX\-0300\-00%20\(9T\)\.pdf
- Part Type: Connectors
- Manufacturer Part Number: 3020\-20\-0300\-00
- Mount: Surface Mount
- Manufacturer Name: CNC Tech
- Role: Adapter Interface
- Symbol Style: parametric\-v1
- Role Details: Contacts 21 through 40
- License: https://creativecommons\.org/licenses/by/4\.0/
- Functional Group: Swappable Adapter Boundary

**Pins:**
- 1 [pin 1]
- 10 [pin 10]
- 11 [pin 11]
- 12 [pin 12]
- 13 [pin 13]
- 14 [pin 14]
- 15 [pin 15]
- 16 [pin 16]
- 17 [pin 17]
- 18 [pin 18]
- 19 [pin 19]
- 2 [pin 2]
- 20 [pin 20]
- 3 [pin 3]
- 4 [pin 4]
- 5 [pin 5]
- 6 [pin 6]
- 7 [pin 7]
- 8 [pin 8]
- 9 [pin 9]

### J4 — [3020\-20\-0300\-00](https://flux.ai/adrian95/3020-20-0300-00.md)

- Datasheet URL: https://cnctech\.us/pdfs/3020\-XX\-0300\-00%20\(9T\)\.pdf
- Role Details: Contacts 41\-55; probe return, shield, GND, \+5V, reserved
- Part Type: Connectors
- Manufacturer Part Number: 3020\-20\-0300\-00
- Mount: Surface Mount
- Manufacturer Name: CNC Tech
- Symbol Style: parametric\-v1
- Role: Adapter Interface
- Functional Group: Swappable Adapter Boundary
- License: https://creativecommons\.org/licenses/by/4\.0/

**Pins:**
- 1 [pin 1]
- 10 [pin 10]
- 11 [pin 11]
- 12 [pin 12]
- 13 [pin 13]
- 14 [pin 14]
- 15 [pin 15]
- 16 [pin 16]
- 17 [pin 17]
- 18 [pin 18]
- 19 [pin 19]
- 2 [pin 2]
- 20 [pin 20]
- 3 [pin 3]
- 4 [pin 4]
- 5 [pin 5]
- 6 [pin 6]
- 7 [pin 7]
- 8 [pin 8]
- 9 [pin 9]

### J5 — [S2B\-PH\-SM4\-TB\(LF\)\(SN\)](https://flux.ai/adrian95/s2b-ph-sm4-tblfsn~b96.md)

- Role Details: Probe return and shield/ground
- Manufacturer Name: JST Sales America Inc\.
- Symbol Style: parametric\-v1
- Datasheet URL: https://www\.jst\-mfg\.com/product/pdf/eng/ePH\.pdf
- Manufacturer Part Number: S2B\-PH\-SM4\-TB\(LF\)\(SN\)
- Functional Group: Clock and Continuity Detector
- Role: Probe Interface
- License: https://creativecommons\.org/licenses/by/4\.0/
- Part Type: Connector

**Pins:**
- P1 [pin 1]
- P2 [pin 2]

### LED1 — [LTST\-C190KRKT](https://flux.ai/adrian95/ltst-c190krkt~3pw.md)

- Role: Indicator
- Part Type: LED
- Datasheet URL: https://optoelectronics\.liteon\.com/upload/download/DS\-22\-99\-0151/LTST\-C190KRKT\.pdf
- Manufacturer Part Number: LTST\-C190KRKT
- Functional Group: Frame Hit State
- Manufacturer Name: Lite\-On Inc\.
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role Details: Lights when frame contains two or more contact hits

**Pins:**
- A [pin 2]
- K [pin 1]

### SW1 — [ITS\-1105\(5\.0mm\)\-SMD](https://flux.ai/silicon-yard/its-11055p0mm-smd~0g.md)

- Functional Group: Controls and State Logic
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: TS\-1105\(5\.0mm\)\-SMD
- Switch Type: Tactile Switch
- Role: User Control
- Part Type: Tactile Switches
- Role Details: Arms forward search after current displayed address
- Datasheet URL: https://www\.devicemart\.co\.kr/goods/view?no=36637&srsltid=AfmBOoqQD1z5f\-WUXeyq\-Wk57gLY7bBKcKTa5lGmUOKJHCQhgb5Hb6Ck
- Manufacturer Name: Youngseong Precision
- Package or Case Code: SW\-SMD\_4P\-L6\.0\-W6\.0\-P4\.50\-LS9\.0\-2

**Pins:**
- 1 [pin 1]
- 2 [pin 2]
- 3 [pin 3]
- 4 [pin 4]

### SW2 — [ITS\-1105\(5\.0mm\)\-SMD](https://flux.ai/silicon-yard/its-11055p0mm-smd~0g.md)

- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: TS\-1105\(5\.0mm\)\-SMD
- Role Details: Clears counters and state
- Functional Group: Controls and State Logic
- Switch Type: Tactile Switch
- Role: User Control
- Part Type: Tactile Switches
- Datasheet URL: https://www\.devicemart\.co\.kr/goods/view?no=36637&srsltid=AfmBOoqQD1z5f\-WUXeyq\-Wk57gLY7bBKcKTa5lGmUOKJHCQhgb5Hb6Ck
- Manufacturer Name: Youngseong Precision
- Package or Case Code: SW\-SMD\_4P\-L6\.0\-W6\.0\-P4\.50\-LS9\.0\-2

**Pins:**
- 1 [pin 1]
- 2 [pin 2]
- 3 [pin 3]
- 4 [pin 4]

### U1 — [MC74HC160ADR2G](https://flux.ai/jecstronic/mc74hc160adr2g~v5u.md)

- Role Details: Ones BCD decade counter
- Part Type: Integrated Circuit
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: MC74HC160ADR2G
- Datasheet URL: https://www\.onsemi\.com/pdf/datasheet/mc74hc160a\-d\.pdf
- Role: Scan Counter
- Functional Group: Scan Address Counter
- Manufacturer Name: onsemi

**Pins:**
- CLOCK [pin 2]
- ENABLEP [pin 7]
- ENABLET [pin 10]
- GND [pin 8]
- LOAD [pin 9]
- P0 [pin 3]
- P1 [pin 4]
- P2 [pin 5]
- P3 [pin 6]
- Q0 [pin 14]
- Q1 [pin 13]
- Q2 [pin 12]
- Q3 [pin 11]
- RESET [pin 1]
- RIPPLECARRYOUT [pin 15]
- VCC [pin 16]

### U10 — [74HC574D\(BJ,K\)](https://flux.ai/lcsc/74hc574dbjck~w7gg.md)

- Package or Case Code: SOIC\-20\_L13\.0\-W7\.6\-P1\.27\-LS10\.3\-BL
- Functional Group: Display and Selection
- LCSC Part Number: C435813
- Manufacturer Name: TOSHIBA\(东芝\)
- Manufacturer Part Number: 74HC574D\(BJ,K\)
- Role Details: Captures scan BCD on first hit or NEXT search result
- JLCPCB Part Class: Extended Part
- Role: Display Address Latch
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2410010131\_TOSHIBA\-74HC574D\-BJ\-K\_C435813\.pdf
- Product Info Url: https://lcsc\.com/product\-detail/Flip\-Flops\_TOSHIBA\-74HC574D\-BJ\-K\_C435813\.html
- Part Type: Flip Flops

**Pins:**
- \~\{OE\} [pin 1]
- CK [pin 11]
- D0 [pin 2]
- D1 [pin 3]
- D2 [pin 4]
- D3 [pin 5]
- D4 [pin 6]
- D5 [pin 7]
- D6 [pin 8]
- D7 [pin 9]
- GND [pin 10]
- Q0 [pin 19]
- Q1 [pin 18]
- Q2 [pin 17]
- Q3 [pin 16]
- Q4 [pin 15]
- Q5 [pin 14]
- Q6 [pin 13]
- Q7 [pin 12]
- VCC [pin 20]

### U11 — [74HC688PW,118](https://flux.ai/lcsc/74hc688pwc118~454v.md)

- Manufacturer Part Number: 74HC688PW,118
- Functional Group: Display and Selection
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2407241037\_Nexperia\-74HC688PW\-118\_C547141\.pdf
- JLCPCB Part Class: Extended Part
- Role: Address Comparator
- LCSC Part Number: C547141
- Role Details: Generates displayed\-address equality
- Package or Case Code: TSSOP\-20\_L6\.5\-W4\.4\-P0\.65\-LS6\.4\-BL
- Product Info Url: https://lcsc\.com/product\-detail/presales\_Nexperia\-74HC688PW\-118\_C547141\.html
- Manufacturer Name: Nexperia\(安世\)
- Part Type: 74 Series

**Pins:**
- \~\{E\} [pin 1]
- \~\{P=Q\} [pin 19]
- GND [pin 10]
- P0 [pin 2]
- P1 [pin 4]
- P2 [pin 6]
- P3 [pin 8]
- P4 [pin 11]
- P5 [pin 13]
- P6 [pin 15]
- P7 [pin 17]
- Q0 [pin 3]
- Q1 [pin 5]
- Q2 [pin 7]
- Q3 [pin 9]
- Q4 [pin 12]
- Q5 [pin 14]
- Q6 [pin 16]
- Q7 [pin 18]
- VCC [pin 20]

### U12 — [74HC688PW,118](https://flux.ai/lcsc/74hc688pwc118~454v.md)

- Manufacturer Part Number: 74HC688PW,118
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2407241037\_Nexperia\-74HC688PW\-118\_C547141\.pdf
- JLCPCB Part Class: Extended Part
- Functional Group: Scan Address Counter
- LCSC Part Number: C547141
- Package or Case Code: TSSOP\-20\_L6\.5\-W4\.4\-P0\.65\-LS6\.4\-BL
- Role: Frame Decoder
- Product Info Url: https://lcsc\.com/product\-detail/presales\_Nexperia\-74HC688PW\-118\_C547141\.html
- Manufacturer Name: Nexperia\(安世\)
- Part Type: 74 Series
- Role Details: Compares scan BCD to fixed 0x55

**Pins:**
- \~\{E\} [pin 1]
- \~\{P=Q\} [pin 19]
- GND [pin 10]
- P0 [pin 2]
- P1 [pin 4]
- P2 [pin 6]
- P3 [pin 8]
- P4 [pin 11]
- P5 [pin 13]
- P6 [pin 15]
- P7 [pin 17]
- Q0 [pin 3]
- Q1 [pin 5]
- Q2 [pin 7]
- Q3 [pin 9]
- Q4 [pin 12]
- Q5 [pin 14]
- Q6 [pin 16]
- Q7 [pin 18]
- VCC [pin 20]

### U13 — [SN74HC14QDRQ1](https://flux.ai/jecstronic/sn74hc14qdrq1~62.md)

- License: https://creativecommons\.org/licenses/by/4\.0/
- Role Details: Oscillator and filtered HIT generation
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/sn74hc14\-q1\.pdf
- Functional Group: Clock and Continuity Detector
- Manufacturer Name: Texas Instruments
- Part Type: Integrated Circuit
- Manufacturer Part Number: SN74HC14QDRQ1
- Role: Schmitt Logic

**Pins:**
- 1A [pin 1]
- 1Y [pin 2]
- 2A [pin 3]
- 2Y [pin 4]
- 3A [pin 5]
- 3Y [pin 6]
- 4A [pin 9]
- 4Y [pin 8]
- 5A [pin 11]
- 5Y [pin 10]
- 6A [pin 13]
- 6Y [pin 12]
- GND [pin 7]
- VCC [pin 14]

### U14 — [SN74HC14QDRQ1](https://flux.ai/jecstronic/sn74hc14qdrq1~62.md)

- License: https://creativecommons\.org/licenses/by/4\.0/
- Functional Group: Controls and State Logic
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/sn74hc14\-q1\.pdf
- Manufacturer Name: Texas Instruments
- Role: Schmitt Logic
- Part Type: Integrated Circuit
- Role Details: Debounce and control polarity conversion
- Manufacturer Part Number: SN74HC14QDRQ1

**Pins:**
- 1A [pin 1]
- 1Y [pin 2]
- 2A [pin 3]
- 2Y [pin 4]
- 3A [pin 5]
- 3Y [pin 6]
- 4A [pin 9]
- 4Y [pin 8]
- 5A [pin 11]
- 5Y [pin 10]
- 6A [pin 13]
- 6Y [pin 12]
- GND [pin 7]
- VCC [pin 14]

### U15 — [SN74HC74DRG4](https://flux.ai/jecstronic/sn74hc74drg4~043.md)

- Manufacturer Part Number: SN74HC74DRG4
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Name: Texas Instruments
- Functional Group: Frame Hit State
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/sn74hc74\.pdf
- Part Type: Integrated Circuit
- Role Details: Saturating hit count state 0,1,2\+
- Role: Frame State

**Pins:**
- \*1CLR [pin 1]
- \*1PRE [pin 4]
- \*1Q [pin 6]
- \*2CLR [pin 13]
- \*2PRE [pin 10]
- \*2Q [pin 8]
- 1CLK [pin 3]
- 1D [pin 2]
- 1Q [pin 5]
- 2CLK [pin 11]
- 2D [pin 12]
- 2Q [pin 9]
- GND [pin 7]
- VCC [pin 14]

### U16 — [SN74HC74DRG4](https://flux.ai/jecstronic/sn74hc74drg4~043.md)

- Manufacturer Part Number: SN74HC74DRG4
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Name: Texas Instruments
- Functional Group: Frame Hit State
- Role: Frame State
- Role Details: Multiple indicator and live\-display validation
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/sn74hc74\.pdf
- Part Type: Integrated Circuit

**Pins:**
- \*1CLR [pin 1]
- \*1PRE [pin 4]
- \*1Q [pin 6]
- \*2CLR [pin 13]
- \*2PRE [pin 10]
- \*2Q [pin 8]
- 1CLK [pin 3]
- 1D [pin 2]
- 1Q [pin 5]
- 2CLK [pin 11]
- 2D [pin 12]
- 2Q [pin 9]
- GND [pin 7]
- VCC [pin 14]

### U17 — [SN74HC74DRG4](https://flux.ai/jecstronic/sn74hc74drg4~043.md)

- Role Details: Display validity and wait\-for\-current\-address state
- Manufacturer Part Number: SN74HC74DRG4
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Name: Texas Instruments
- Role: Selection State
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/sn74hc74\.pdf
- Functional Group: Display and Selection
- Part Type: Integrated Circuit

**Pins:**
- \*1CLR [pin 1]
- \*1PRE [pin 4]
- \*1Q [pin 6]
- \*2CLR [pin 13]
- \*2PRE [pin 10]
- \*2Q [pin 8]
- 1CLK [pin 3]
- 1D [pin 2]
- 1Q [pin 5]
- 2CLK [pin 11]
- 2D [pin 12]
- 2Q [pin 9]
- GND [pin 7]
- VCC [pin 14]

### U18 — [SN74HC74DRG4](https://flux.ai/jecstronic/sn74hc74drg4~043.md)

- Manufacturer Part Number: SN74HC74DRG4
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Name: Texas Instruments
- Role Details: Searches forward after displayed address with wrap
- Functional Group: Display and Selection
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/sn74hc74\.pdf
- Role: Selection State
- Part Type: Integrated Circuit

**Pins:**
- \*1CLR [pin 1]
- \*1PRE [pin 4]
- \*1Q [pin 6]
- \*2CLR [pin 13]
- \*2PRE [pin 10]
- \*2Q [pin 8]
- 1CLK [pin 3]
- 1D [pin 2]
- 1Q [pin 5]
- 2CLK [pin 11]
- 2D [pin 12]
- 2Q [pin 9]
- GND [pin 7]
- VCC [pin 14]

### U19 — [74HC08PW\-Q100\-118](https://flux.ai/adrian95/74hc08pw-q100-118~d1r.md)

- Manufacturer Part Number: 74HC08PW\-Q100,118
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role: Combinational Logic
- Manufacturer Name: Nexperia USA Inc\.
- Role Details: Hit event and frame reset gating
- Functional Group: Frame Hit State
- Part Type: Integrated Circuit
- Datasheet URL: https://assets\.nexperia\.com/documents/data\-sheet/74HC\_HCT08\_Q100\.pdf

**Pins:**
- 1A [pin 1]
- 1B [pin 2]
- 1Y [pin 3]
- 2A [pin 4]
- 2B [pin 5]
- 2Y [pin 6]
- 3A [pin 9]
- 3B [pin 10]
- 3Y [pin 8]
- 4A [pin 12]
- 4B [pin 13]
- 4Y [pin 11]
- GND [pin 7]
- VCC [pin 14]

### U2 — [MC74HC160ADR2G](https://flux.ai/jecstronic/mc74hc160adr2g~v5u.md)

- Part Type: Integrated Circuit
- Role: Scan Counter
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: MC74HC160ADR2G
- Datasheet URL: https://www\.onsemi\.com/pdf/datasheet/mc74hc160a\-d\.pdf
- Role Details: Tens BCD counter, modulo\-55 sequence
- Functional Group: Scan Address Counter
- Manufacturer Name: onsemi

**Pins:**
- CLOCK [pin 2]
- ENABLEP [pin 7]
- ENABLET [pin 10]
- GND [pin 8]
- LOAD [pin 9]
- P0 [pin 3]
- P1 [pin 4]
- P2 [pin 5]
- P3 [pin 6]
- Q0 [pin 14]
- Q1 [pin 13]
- Q2 [pin 12]
- Q3 [pin 11]
- RESET [pin 1]
- RIPPLECARRYOUT [pin 15]
- VCC [pin 16]

### U20 — [74HC08PW\-Q100\-118](https://flux.ai/adrian95/74hc08pw-q100-118~d1r.md)

- Manufacturer Part Number: 74HC08PW\-Q100,118
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role Details: Displayed hit and capture gating
- Manufacturer Name: Nexperia USA Inc\.
- Role: Combinational Logic
- Functional Group: Display and Selection
- Part Type: Integrated Circuit
- Datasheet URL: https://assets\.nexperia\.com/documents/data\-sheet/74HC\_HCT08\_Q100\.pdf

**Pins:**
- 1A [pin 1]
- 1B [pin 2]
- 1Y [pin 3]
- 2A [pin 4]
- 2B [pin 5]
- 2Y [pin 6]
- 3A [pin 9]
- 3B [pin 10]
- 3Y [pin 8]
- 4A [pin 12]
- 4B [pin 13]
- 4Y [pin 11]
- GND [pin 7]
- VCC [pin 14]

### U21 — [74HC08PW\-Q100\-118](https://flux.ai/adrian95/74hc08pw-q100-118~d1r.md)

- Manufacturer Part Number: 74HC08PW\-Q100,118
- License: https://creativecommons\.org/licenses/by/4\.0/
- Functional Group: Display and Selection
- Manufacturer Name: Nexperia USA Inc\.
- Role Details: Armed/equality and search clear gating
- Role: Combinational Logic
- Part Type: Integrated Circuit
- Datasheet URL: https://assets\.nexperia\.com/documents/data\-sheet/74HC\_HCT08\_Q100\.pdf

**Pins:**
- 1A [pin 1]
- 1B [pin 2]
- 1Y [pin 3]
- 2A [pin 4]
- 2B [pin 5]
- 2Y [pin 6]
- 3A [pin 9]
- 3B [pin 10]
- 3Y [pin 8]
- 4A [pin 12]
- 4B [pin 13]
- 4Y [pin 11]
- GND [pin 7]
- VCC [pin 14]

### U22 — [74HC32D\-Q100,118](https://flux.ai/lcsc/74hc32d-q100c118~9crd.md)

- LCSC Part Number: C546864
- Product Info Url: https://lcsc\.com/product\-detail/presales\_Nexperia\-74HC32D\-Q100\-118\_C546864\.html
- JLCPCB Part Class: Extended Part
- Part Type: Gates
- Package or Case Code: SOP\-14\_L8\.6\-W3\.9\-P1\.27\-LS6\.0\-BL
- Manufacturer Part Number: 74HC32D\-Q100,118
- Role: Combinational Logic
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2410010201\_Nexperia\-74HC32D\-Q100\-118\_C546864\.pdf
- Functional Group: Frame Hit State
- Manufacturer Name: Nexperia\(安世\)
- Role Details: ANY, MULTI and display\-seen state terms

**Pins:**
- 1A [pin 1]
- 1B [pin 2]
- 1Y [pin 3]
- 2A [pin 4]
- 2B [pin 5]
- 2Y [pin 6]
- 3A [pin 9]
- 3B [pin 10]
- 3Y [pin 8]
- 4A [pin 12]
- 4B [pin 13]
- 4Y [pin 11]
- GND [pin 7]
- VCC [pin 14]

### U23 — [74HC32D\-Q100,118](https://flux.ai/lcsc/74hc32d-q100c118~9crd.md)

- LCSC Part Number: C546864
- Functional Group: Display and Selection
- Product Info Url: https://lcsc\.com/product\-detail/presales\_Nexperia\-74HC32D\-Q100\-118\_C546864\.html
- JLCPCB Part Class: Extended Part
- Part Type: Gates
- Package or Case Code: SOP\-14\_L8\.6\-W3\.9\-P1\.27\-LS6\.0\-BL
- Role: Combinational Logic
- Manufacturer Part Number: 74HC32D\-Q100,118
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2410010201\_Nexperia\-74HC32D\-Q100\-118\_C546864\.pdf
- Role Details: Capture\-enable and search\-state terms
- Manufacturer Name: Nexperia\(安世\)

**Pins:**
- 1A [pin 1]
- 1B [pin 2]
- 1Y [pin 3]
- 2A [pin 4]
- 2B [pin 5]
- 2Y [pin 6]
- 3A [pin 9]
- 3B [pin 10]
- 3Y [pin 8]
- 4A [pin 12]
- 4B [pin 13]
- 4Y [pin 11]
- GND [pin 7]
- VCC [pin 14]

### U24 — [74HC157PW,118](https://flux.ai/lcsc/74hc157pwc118~4tao.md)

- Role Details: Select running\-state or frame\-final value at address 55
- JLCPCB Part Class: Extended Part
- Manufacturer Part Number: 74HC157PW,118
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2407241026\_Nexperia\-74HC157PW\-118\_C148201\.pdf
- LCSC Part Number: C148201
- Manufacturer Name: Nexperia\(安世\)
- Product Info Url: https://lcsc\.com/product\-detail/74\-Series\_Nexperia\_74HC157PW\-118\_74HC157PW\-118\_C148201\.html
- Functional Group: Frame Hit State
- Part Type: 74 Series
- Package or Case Code: TSSOP\-16\_L5\.0\-W4\.4\-P0\.65\-LS6\.4\-BL
- Role: State Multiplexer

**Pins:**
- \~\{E\} [pin 15]
- 1I0 [pin 2]
- 1I1 [pin 3]
- 1Y [pin 4]
- 2I0 [pin 5]
- 2I1 [pin 6]
- 2Y [pin 7]
- 3I0 [pin 11]
- 3I1 [pin 10]
- 3Y [pin 9]
- 4I0 [pin 14]
- 4I1 [pin 13]
- 4Y [pin 12]
- GND [pin 8]
- S [pin 1]
- VCC [pin 16]

### U25 — [CD4511BPWR](https://flux.ai/adrian95/cd4511bpwr~ojo.md)

- Part Type: Integrated Circuit
- Manufacturer Part Number: CD4511BPWR
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/cd4511b\.pdf
- Symbol Style: parametric\-v1
- Functional Group: Display and Selection
- Manufacturer Name: Texas Instruments
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role: Display Driver
- Role Details: Static common\-cathode tens digit driver

**Pins:**
- \~BL [pin 4]
- \~LT [pin 3]
- A\_1 [pin 7]
- A\_2 [pin 13]
- B\_1 [pin 1]
- B\_2 [pin 12]
- C\_1 [pin 2]
- C\_2 [pin 11]
- D\_1 [pin 6]
- D\_2 [pin 10]
- E [pin 9]
- F [pin 15]
- G [pin 14]
- LE/\~STROBE [pin 5]
- VDD [pin 16]
- VSS [pin 8]

### U26 — [CD4511BPWR](https://flux.ai/adrian95/cd4511bpwr~ojo.md)

- Part Type: Integrated Circuit
- Manufacturer Part Number: CD4511BPWR
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/cd4511b\.pdf
- Symbol Style: parametric\-v1
- Role: Display Driver
- Manufacturer Name: Texas Instruments
- Functional Group: Display and Selection
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role Details: Static common\-cathode ones digit driver

**Pins:**
- \~BL [pin 4]
- \~LT [pin 3]
- A\_1 [pin 7]
- A\_2 [pin 13]
- B\_1 [pin 1]
- B\_2 [pin 12]
- C\_1 [pin 2]
- C\_2 [pin 11]
- D\_1 [pin 6]
- D\_2 [pin 10]
- E [pin 9]
- F [pin 15]
- G [pin 14]
- LE/\~STROBE [pin 5]
- VDD [pin 16]
- VSS [pin 8]

### U27 — [74HC157PW,118](https://flux.ai/lcsc/74hc157pwc118~4tao.md)

- Role: Switching
- JLCPCB Part Class: Extended Part
- Functional Group: Display and Selection
- Manufacturer Part Number: 74HC157PW,118
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2407241026\_Nexperia\-74HC157PW\-118\_C148201\.pdf
- Role Details: Selects register feedback or live scan address before SCAN\_CLK edge
- LCSC Part Number: C148201
- Manufacturer Name: Nexperia\(安世\)
- Product Info Url: https://lcsc\.com/product\-detail/74\-Series\_Nexperia\_74HC157PW\-118\_74HC157PW\-118\_C148201\.html
- Part Type: 74 Series
- Package or Case Code: TSSOP\-16\_L5\.0\-W4\.4\-P0\.65\-LS6\.4\-BL

**Pins:**
- \~\{E\} [pin 15]
- 1I0 [pin 2]
- 1I1 [pin 3]
- 1Y [pin 4]
- 2I0 [pin 5]
- 2I1 [pin 6]
- 2Y [pin 7]
- 3I0 [pin 11]
- 3I1 [pin 10]
- 3Y [pin 9]
- 4I0 [pin 14]
- 4I1 [pin 13]
- 4Y [pin 12]
- GND [pin 8]
- S [pin 1]
- VCC [pin 16]

### U28 — [74HC157PW,118](https://flux.ai/lcsc/74hc157pwc118~4tao.md)

- JLCPCB Part Class: Extended Part
- Role Details: Selects register feedback or live scan address before SCAN\_CLK edge
- Manufacturer Part Number: 74HC157PW,118
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2407241026\_Nexperia\-74HC157PW\-118\_C148201\.pdf
- LCSC Part Number: C148201
- Functional Group: Display and Selection
- Role: Switching
- Manufacturer Name: Nexperia\(安世\)
- Product Info Url: https://lcsc\.com/product\-detail/74\-Series\_Nexperia\_74HC157PW\-118\_74HC157PW\-118\_C148201\.html
- Part Type: 74 Series
- Package or Case Code: TSSOP\-16\_L5\.0\-W4\.4\-P0\.65\-LS6\.4\-BL

**Pins:**
- \~\{E\} [pin 15]
- 1I0 [pin 2]
- 1I1 [pin 3]
- 1Y [pin 4]
- 2I0 [pin 5]
- 2I1 [pin 6]
- 2Y [pin 7]
- 3I0 [pin 11]
- 3I1 [pin 10]
- 3Y [pin 9]
- 4I0 [pin 14]
- 4I1 [pin 13]
- 4Y [pin 12]
- GND [pin 8]
- S [pin 1]
- VCC [pin 16]

### U3 — [CD74HC4067SM](https://flux.ai/kicad-part-library/cd74hc4067sm~my.md)

- Package or Case Code: SSOP\-24\_5\.3x8\.2mm\_P0\.65mm
- Manufacturer Part Number: CD74HC4067SM
- Datasheet URL: http://www\.ti\.com/lit/ds/symlink/cd74hc4067\.pdf
- Role Details: Tens bank 0, ones channels 1 through 9
- Manufacturer Name: Texas Instruments Inc\.
- Functional Group: 55\-Channel Analog Scanner
- Role: Analog Multiplexer

**Pins:**
- \~\{E\} [pin 15]
- COM [pin 1]
- GND [pin 12]
- I0 [pin 9]
- I1 [pin 8]
- I10 [pin 21]
- I11 [pin 20]
- I12 [pin 19]
- I13 [pin 18]
- I14 [pin 17]
- I15 [pin 16]
- I2 [pin 7]
- I3 [pin 6]
- I4 [pin 5]
- I5 [pin 4]
- I6 [pin 3]
- I7 [pin 2]
- I8 [pin 23]
- I9 [pin 22]
- S0 [pin 10]
- S1 [pin 11]
- S2 [pin 14]
- S3 [pin 13]
- VCC [pin 24]

### U4 — [CD74HC4067SM](https://flux.ai/kicad-part-library/cd74hc4067sm~my.md)

- Package or Case Code: SSOP\-24\_5\.3x8\.2mm\_P0\.65mm
- Manufacturer Part Number: CD74HC4067SM
- Datasheet URL: http://www\.ti\.com/lit/ds/symlink/cd74hc4067\.pdf
- Manufacturer Name: Texas Instruments Inc\.
- Functional Group: 55\-Channel Analog Scanner
- Role: Analog Multiplexer
- Role Details: Tens bank 1

**Pins:**
- \~\{E\} [pin 15]
- COM [pin 1]
- GND [pin 12]
- I0 [pin 9]
- I1 [pin 8]
- I10 [pin 21]
- I11 [pin 20]
- I12 [pin 19]
- I13 [pin 18]
- I14 [pin 17]
- I15 [pin 16]
- I2 [pin 7]
- I3 [pin 6]
- I4 [pin 5]
- I5 [pin 4]
- I6 [pin 3]
- I7 [pin 2]
- I8 [pin 23]
- I9 [pin 22]
- S0 [pin 10]
- S1 [pin 11]
- S2 [pin 14]
- S3 [pin 13]
- VCC [pin 24]

### U5 — [CD74HC4067SM](https://flux.ai/kicad-part-library/cd74hc4067sm~my.md)

- Package or Case Code: SSOP\-24\_5\.3x8\.2mm\_P0\.65mm
- Manufacturer Part Number: CD74HC4067SM
- Datasheet URL: http://www\.ti\.com/lit/ds/symlink/cd74hc4067\.pdf
- Role: Analog Multiplexer
- Functional Group: 55\-Channel Analog Scanner
- Manufacturer Name: Texas Instruments Inc\.
- Role Details: Tens bank 2

**Pins:**
- \~\{E\} [pin 15]
- COM [pin 1]
- GND [pin 12]
- I0 [pin 9]
- I1 [pin 8]
- I10 [pin 21]
- I11 [pin 20]
- I12 [pin 19]
- I13 [pin 18]
- I14 [pin 17]
- I15 [pin 16]
- I2 [pin 7]
- I3 [pin 6]
- I4 [pin 5]
- I5 [pin 4]
- I6 [pin 3]
- I7 [pin 2]
- I8 [pin 23]
- I9 [pin 22]
- S0 [pin 10]
- S1 [pin 11]
- S2 [pin 14]
- S3 [pin 13]
- VCC [pin 24]

### U6 — [CD74HC4067SM](https://flux.ai/kicad-part-library/cd74hc4067sm~my.md)

- Package or Case Code: SSOP\-24\_5\.3x8\.2mm\_P0\.65mm
- Manufacturer Part Number: CD74HC4067SM
- Datasheet URL: http://www\.ti\.com/lit/ds/symlink/cd74hc4067\.pdf
- Functional Group: 55\-Channel Analog Scanner
- Role Details: Tens bank 3
- Role: Analog Multiplexer
- Manufacturer Name: Texas Instruments Inc\.

**Pins:**
- \~\{E\} [pin 15]
- COM [pin 1]
- GND [pin 12]
- I0 [pin 9]
- I1 [pin 8]
- I10 [pin 21]
- I11 [pin 20]
- I12 [pin 19]
- I13 [pin 18]
- I14 [pin 17]
- I15 [pin 16]
- I2 [pin 7]
- I3 [pin 6]
- I4 [pin 5]
- I5 [pin 4]
- I6 [pin 3]
- I7 [pin 2]
- I8 [pin 23]
- I9 [pin 22]
- S0 [pin 10]
- S1 [pin 11]
- S2 [pin 14]
- S3 [pin 13]
- VCC [pin 24]

### U7 — [CD74HC4067SM](https://flux.ai/kicad-part-library/cd74hc4067sm~my.md)

- Package or Case Code: SSOP\-24\_5\.3x8\.2mm\_P0\.65mm
- Manufacturer Part Number: CD74HC4067SM
- Datasheet URL: http://www\.ti\.com/lit/ds/symlink/cd74hc4067\.pdf
- Manufacturer Name: Texas Instruments Inc\.
- Role Details: Tens bank 4
- Functional Group: 55\-Channel Analog Scanner
- Role: Analog Multiplexer

**Pins:**
- \~\{E\} [pin 15]
- COM [pin 1]
- GND [pin 12]
- I0 [pin 9]
- I1 [pin 8]
- I10 [pin 21]
- I11 [pin 20]
- I12 [pin 19]
- I13 [pin 18]
- I14 [pin 17]
- I15 [pin 16]
- I2 [pin 7]
- I3 [pin 6]
- I4 [pin 5]
- I5 [pin 4]
- I6 [pin 3]
- I7 [pin 2]
- I8 [pin 23]
- I9 [pin 22]
- S0 [pin 10]
- S1 [pin 11]
- S2 [pin 14]
- S3 [pin 13]
- VCC [pin 24]

### U8 — [CD74HC4067SM](https://flux.ai/kicad-part-library/cd74hc4067sm~my.md)

- Package or Case Code: SSOP\-24\_5\.3x8\.2mm\_P0\.65mm
- Manufacturer Part Number: CD74HC4067SM
- Datasheet URL: http://www\.ti\.com/lit/ds/symlink/cd74hc4067\.pdf
- Manufacturer Name: Texas Instruments Inc\.
- Role: Analog Multiplexer
- Role Details: Tens bank 5, channels 0 through 5
- Functional Group: 55\-Channel Analog Scanner

**Pins:**
- \~\{E\} [pin 15]
- COM [pin 1]
- GND [pin 12]
- I0 [pin 9]
- I1 [pin 8]
- I10 [pin 21]
- I11 [pin 20]
- I12 [pin 19]
- I13 [pin 18]
- I14 [pin 17]
- I15 [pin 16]
- I2 [pin 7]
- I3 [pin 6]
- I4 [pin 5]
- I5 [pin 4]
- I6 [pin 3]
- I7 [pin 2]
- I8 [pin 23]
- I9 [pin 22]
- S0 [pin 10]
- S1 [pin 11]
- S2 [pin 14]
- S3 [pin 13]
- VCC [pin 24]

### U9 — [74HC138D\-Q100,118](https://flux.ai/lcsc/74hc138d-q100c118~6vh.md)

- Part Type: Signal Switches / Encoders & Decoders / Multiplexers
- LCSC Part Number: C546573
- Role: Bank Decoder
- Manufacturer Part Number: 74HC138D\-Q100,118
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2410010201\_Nexperia\-74HC138D\-Q100\-118\_C546573\.pdf
- Manufacturer Name: Nexperia\(安世\)
- Role Details: Selects one of six contact mux banks
- Functional Group: 55\-Channel Analog Scanner
- Product Info Url: https://lcsc\.com/product\-detail/presales\_Nexperia\-74HC138D\-Q100\-118\_C546573\.html
- Package or Case Code: SO\-16\_L9\.9\-W3\.9\-P1\.27\-LS6\.0\-BL
- JLCPCB Part Class: Extended Part

**Pins:**
- A0 [pin 1]
- A1 [pin 2]
- A2 [pin 3]
- E\#1 [pin 4]
- E\#2 [pin 5]
- E3 [pin 6]
- GND [pin 8]
- VCC [pin 16]
- Y\#0 [pin 15]
- Y\#1 [pin 14]
- Y\#2 [pin 13]
- Y\#3 [pin 12]
- Y\#4 [pin 11]
- Y\#5 [pin 10]
- Y\#6 [pin 9]
- Y\#7 [pin 7]

*The full schematic, PCB layout, bill of materials, and interactive design are available at [https://flux\.ai/asbestostiling/modular\-38999\-cable\-tester\~mg](https://flux.ai/asbestostiling/modular-38999-cable-tester~mg).*

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*Generated from [https://flux\.ai/asbestostiling/modular\-38999\-cable\-tester\~mg](https://flux.ai/asbestostiling/modular-38999-cable-tester~mg)*