# SAM4ExtensionV5

## Description

USB\-only mini\-PCIe add\-in card with USB2422 hub, two dual\-SAM SEC1210 controllers, four SAM sockets, and a 3\.3 V\-to\-5 V supply\.

## Project Details

- **Owner:** cevdetboz
- **Created:** 9/22/2026
- **Last Updated:** 10/8/2026
- **Visibility:** Public

## Key Components

### D1 — [SMF3\.3A](https://flux.ai/lcsc/smf3p3a~g2oi.md)

- Role: Protection
- Part Type: TVS
- Role Details: Protected 3\.3V rail transient clamp
- LCSC Part Number: C2759873
- Manufacturer Name: Leiditech\(雷卯电子\)
- Reverse Voltage: 3\.3V
- JLCPCB Part Class: Extended Part
- Functional Group: IO J1 Hub and Card Edge
- Diode Type: TVS
- Forward Voltage: 0\.7V
- Package or Case Code: SOD\-123FL\_L2\.8\-W1\.8\-LS3\.8\-RD
- Manufacturer Part Number: SMF3\.3A

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

### D2 — [SMF5\.0A](https://flux.ai/lcsc/smf5p0a~bz6b.md)

- Role: Protection
- Package or Case Code: SOD\-123FL\_L2\.8\-W1\.8\-LS3\.6\-RD
- JLCPCB Part Class: Extended Part
- 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\(里阳半导体\)
- Manufacturer Part Number: SMF5\.0A
- Functional Group: IO J1 Hub and Card Edge
- Role Details: Protected 5V rail transient clamp
- Forward Voltage: 0\.45V to 0\.55V \(at 1A\)V

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

### D3 — [TPD4E05U06DQAR](https://flux.ai/jharwinflux/tpd4e05u06dqar~rl.md)

- Manufacturer Name: Texas Instruments Inc\.
- Manufacturer Part Number: TPD4E05U06DQAR
- Role: SAM ESD protection
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role Details: SAM 1 interface low\-capacitance four\-channel ESD
- Part Type: Diode
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/tpd4e05u06\.pdf
- Functional Group: DIGITAL U2 SAM1 and SAM2

**Pins:**
- D1\- [pin 2]
- D1\+ [pin 1]
- D2\- [pin 5]
- D2\+ [pin 4]
- GND\_1 [pin 3]
- GND\_2 [pin 8]
- NC\_1 [pin 6]
- NC\_2 [pin 7]
- NC\_3 [pin 9]
- NC\_4 [pin 10]

### D4 — [TPD4E05U06DQAR](https://flux.ai/jharwinflux/tpd4e05u06dqar~rl.md)

- Manufacturer Name: Texas Instruments Inc\.
- Manufacturer Part Number: TPD4E05U06DQAR
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role: SAM ESD protection
- Part Type: Diode
- Functional Group: DIGITAL U2 SAM1 and SAM2
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/tpd4e05u06\.pdf
- Role Details: SAM 2 interface low\-capacitance four\-channel ESD

**Pins:**
- D1\- [pin 2]
- D1\+ [pin 1]
- D2\- [pin 5]
- D2\+ [pin 4]
- GND\_1 [pin 3]
- GND\_2 [pin 8]
- NC\_1 [pin 6]
- NC\_2 [pin 7]
- NC\_3 [pin 9]
- NC\_4 [pin 10]

### D5 — [TPD4E05U06DQAR](https://flux.ai/jharwinflux/tpd4e05u06dqar~rl.md)

- Manufacturer Name: Texas Instruments Inc\.
- Manufacturer Part Number: TPD4E05U06DQAR
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role: SAM ESD protection
- Part Type: Diode
- Functional Group: DIGITAL U3 SAM3 and SAM4
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/tpd4e05u06\.pdf
- Role Details: SAM 3 interface low\-capacitance four\-channel ESD

**Pins:**
- D1\- [pin 2]
- D1\+ [pin 1]
- D2\- [pin 5]
- D2\+ [pin 4]
- GND\_1 [pin 3]
- GND\_2 [pin 8]
- NC\_1 [pin 6]
- NC\_2 [pin 7]
- NC\_3 [pin 9]
- NC\_4 [pin 10]

### D6 — [TPD4E05U06DQAR](https://flux.ai/jharwinflux/tpd4e05u06dqar~rl.md)

- Manufacturer Name: Texas Instruments Inc\.
- Manufacturer Part Number: TPD4E05U06DQAR
- Functional Group: DIGITAL U3 SAM3 and SAM4
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role Details: SAM 4 interface low\-capacitance four\-channel ESD
- Part Type: Diode
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/tpd4e05u06\.pdf
- Role: SAM ESD protection

**Pins:**
- D1\- [pin 2]
- D1\+ [pin 1]
- D2\- [pin 5]
- D2\+ [pin 4]
- GND\_1 [pin 3]
- GND\_2 [pin 8]
- NC\_1 [pin 6]
- NC\_2 [pin 7]
- NC\_3 [pin 9]
- NC\_4 [pin 10]

### F1 — [1206L050/15YR](https://flux.ai/jecstronic/1206l05015yr~ad2.md)

- Role: Protection
- Role Details: 3\.3V host rail overcurrent protection; 89mA hub peak budget
- Manufacturer Name: Littelfuse Inc\.
- Functional Group: IO J1 Hub and Card Edge
- Manufacturer Part Number: 1206L050/15YR
- Datasheet URL: https://www\.littelfuse\.com/media?resourcetype=datasheets&itemid=2b6a1515\-d4ee\-4c83\-8bd4\-152b4901b8f5&filename=littelfuse\_ptc\_1206l\_datasheet\.pdf
- Part Type: Fuse
- License: https://creativecommons\.org/licenses/by/4\.0/

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

### F2 — [1206L075THYR](https://flux.ai/adrian95/1206l075thyr~5hm.md)

- Role: Protection
- Manufacturer Name: Littelfuse Inc\.
- Role Details: 5V host rail overcurrent protection; 238mA calculated maximum load
- Functional Group: IO J1 Hub and Card Edge
- Manufacturer Part Number: 1206L075THYR
- Datasheet URL: https://www\.littelfuse\.com/assetdocs/resettable\-ptcs\-1206l\-datasheet?assetguid=2b6a1515\-d4ee\-4c83\-8bd4\-152b4901b8f5
- Part Type: Fuse
- License: https://creativecommons\.org/licenses/by/4\.0/

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

### FL1 — [DLW21SN900SQ2L](https://flux.ai/wadam000/dlw21sn900sq2l~6z.md)

- Package or Case Code: FIL\_DLW21SN900SQ2L
- Role: USB common\-mode filter
- Manufacturer Part Number: DLW21SN900SQ2L
- Manufacturer Name: Murata
- Functional Group: IO J1 Hub and Card Edge
- Role Details: Upstream USB common\-mode choke
- Part Type: DLW21SN900SQ2L

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

### J2 — MUP\-C746\-1

- Part Type: Connectors
- Mount: Surface Mount
- Manufacturer Name: MUP Industrial Co\., Ltd\.
- Manufacturer Part Number: MUP\-C746\-1
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/1fb274f64634649c8ce3ea9801da9c8d47c78d1fc1efe8be2881af4c0583e204\.pdf
- Role: SAM connector
- Role Details: Dual SAM positions 1 and 2 for U2
- Functional Group: DIGITAL U2 SAM1 and SAM2

**Pins:**
- A\_C1\_VCC [pin 1]
- A\_C2\_RST [pin 2]
- A\_C3\_CLK [pin 3]
- A\_C4\_RFU [pin 4]
- A\_C5\_GND [pin 5]
- A\_C6\_VPP [pin 6]
- A\_C7\_IO [pin 7]
- A\_C8\_RFU [pin 8]
- B\_C1\_VCC [pin 9]
- B\_C2\_RST [pin 10]
- B\_C3\_CLK [pin 11]
- B\_C4\_RFU [pin 12]
- B\_C5\_GND [pin 13]
- B\_C6\_VPP [pin 14]
- B\_C7\_IO [pin 15]
- B\_C8\_RFU [pin 16]
- SHIELD [pin 20]
- SHIELD [pin 17]
- SHIELD [pin 19]
- SHIELD [pin 18]

### J3 — MUP\-C746\-1

- Part Type: Connectors
- Mount: Surface Mount
- Functional Group: DIGITAL U3 SAM3 and SAM4
- Role Details: Dual SAM positions 3 and 4 for U3
- Manufacturer Name: MUP Industrial Co\., Ltd\.
- Manufacturer Part Number: MUP\-C746\-1
- Role: SAM connector
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/1fb274f64634649c8ce3ea9801da9c8d47c78d1fc1efe8be2881af4c0583e204\.pdf

**Pins:**
- A\_C1\_VCC [pin 1]
- A\_C2\_RST [pin 2]
- A\_C3\_CLK [pin 3]
- A\_C4\_RFU [pin 4]
- A\_C5\_GND [pin 5]
- A\_C6\_VPP [pin 6]
- A\_C7\_IO [pin 7]
- A\_C8\_RFU [pin 8]
- B\_C1\_VCC [pin 9]
- B\_C2\_RST [pin 10]
- B\_C3\_CLK [pin 11]
- B\_C4\_RFU [pin 12]
- B\_C5\_GND [pin 13]
- B\_C6\_VPP [pin 14]
- B\_C7\_IO [pin 15]
- B\_C8\_RFU [pin 16]
- SHIELD [pin 20]
- SHIELD [pin 17]
- SHIELD [pin 19]
- SHIELD [pin 18]

### U1 — [USB2422\-I/MJ](https://flux.ai/silicon-yard/usb2422-imj.md)

- Symbol Style: parametric\-v1
- Manufacturer Part Number: USB2422\-I/MJ
- Role: USB hub
- License: https://creativecommons\.org/licenses/by/4\.0/
- Functional Group: IO J1 Hub and Card Edge
- Role Details: Self\-powered USB\-only two\-port hub; internal default per USB2422 datasheet\. No external USB series resistors\.
- Manufacturer Name: Microchip Technology
- Part Type: Integrated Circuits
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/f9a9daa8181f2aae0361dc097f07d397f0fabbeecebc493c2427d8c25d79f1e6\.pdf

**Pins:**
- CRFILT [pin 10]
- EP [pin 25]
- NC [pin 6]
- OCS1\_N [pin 8]
- OCS2\_N [pin 12]
- PLLFILT [pin 23]
- PRTPWR1/\(BC\_EN1\) [pin 7]
- PRTPWR2 [pin 11]
- RBIAS [pin 24]
- RESET\_N [pin 15]
- SMBCLK/CFG\_SEL0 [pin 14]
- SMBDATA/NON\_REM1 [pin 13]
- SUSP\_IND/LOCAL\_PWR/\(NON\_REM0\) [pin 17]
- USBDM\_DN1/PRT\_DIS\_M1 [pin 2]
- USBDM\_DN2/PRT\_DIS\_M2 [pin 4]
- USBDM\_UP [pin 19]
- USBDP\_DN1/PRT\_DIS\_P1 [pin 3]
- USBDP\_DN2/PRT\_DIS\_P2 [pin 5]
- USBDP\_UP [pin 20]
- VBUS\_DET [pin 16]
- VDD33\_1 [pin 1]
- VDD33\_2 [pin 9]
- VDD33\_3 [pin 18]
- XTALIN/CLKIN [pin 22]
- XTALOUT/\(CLKIN\_EN\) [pin 21]

### U2 — [SEC1210\-CN\-02](https://flux.ai/lcsc/sec1210-cn-02~2muo.md)

- LCSC Part Number: C633304
- Role: Smartcard reader
- Manufacturer Name: MICROCHIP\(美国微芯\)
- Functional Group: DIGITAL U2 SAM1 and SAM2
- Role Details: Dual SAM reader powered only from host\-supplied 5V on VDD5\. VDD33 is internal output connected only to C14 1uF\.
- Manufacturer Part Number: SEC1210\-CN\-02
- Datasheet URL: https://ww1\.microchip\.com/downloads/en/DeviceDoc/00001561E\.pdf
- Package or Case Code: QFN\-24\_L5\.0\-W5\.0\-P0\.65\-BL\-EP3\.2
- JLCPCB Part Class: Extended Part

**Pins:**
- EP [pin 25]
- JTAG\_CLK [pin 19]
- RESET\_N [pin 22]
- SC\_LED\_ACT\_N/JTAG\_TDO [pin 20]
- SC1\_C4 [pin 5]
- SC1\_C8 [pin 4]
- SC1\_CLK [pin 7]
- SC1\_IO [pin 6]
- SC1\_PRSNT\_N/JTAG\_TMS [pin 10]
- SC1\_RST\_N [pin 8]
- SC1\_VCC [pin 9]
- SC2\_CLK [pin 24]
- SC2\_IO [pin 23]
- SC2\_PRSNT\_N/JTAG\_TDI [pin 21]
- SC2\_RST\_N [pin 1]
- SC2\_VCC [pin 2]
- SPI1\_CE/RTS [pin 13]
- SPI1\_CLK/CTS [pin 12]
- SPI1\_MISO/RXD [pin 11]
- SPI1\_MOSI/TXD [pin 14]
- TEST [pin 15]
- USB\_DM [pin 16]
- USB\_DP [pin 17]
- VDD33 [pin 18]
- VDD5 [pin 3]

### U3 — [SEC1210\-CN\-02](https://flux.ai/lcsc/sec1210-cn-02~2muo.md)

- Functional Group: DIGITAL U3 SAM3 and SAM4
- LCSC Part Number: C633304
- Role Details: Dual SAM reader powered only from host\-supplied 5V on VDD5\. VDD33 is internal output connected only to C19 1uF\.
- Role: Smartcard reader
- Manufacturer Name: MICROCHIP\(美国微芯\)
- Datasheet URL: https://ww1\.microchip\.com/downloads/en/DeviceDoc/00001561E\.pdf
- Manufacturer Part Number: SEC1210\-CN\-02
- Package or Case Code: QFN\-24\_L5\.0\-W5\.0\-P0\.65\-BL\-EP3\.2
- JLCPCB Part Class: Extended Part

**Pins:**
- EP [pin 25]
- JTAG\_CLK [pin 19]
- RESET\_N [pin 22]
- SC\_LED\_ACT\_N/JTAG\_TDO [pin 20]
- SC1\_C4 [pin 5]
- SC1\_C8 [pin 4]
- SC1\_CLK [pin 7]
- SC1\_IO [pin 6]
- SC1\_PRSNT\_N/JTAG\_TMS [pin 10]
- SC1\_RST\_N [pin 8]
- SC1\_VCC [pin 9]
- SC2\_CLK [pin 24]
- SC2\_IO [pin 23]
- SC2\_PRSNT\_N/JTAG\_TDI [pin 21]
- SC2\_RST\_N [pin 1]
- SC2\_VCC [pin 2]
- SPI1\_CE/RTS [pin 13]
- SPI1\_CLK/CTS [pin 12]
- SPI1\_MISO/RXD [pin 11]
- SPI1\_MOSI/TXD [pin 14]
- TEST [pin 15]
- USB\_DM [pin 16]
- USB\_DP [pin 17]
- VDD33 [pin 18]
- VDD5 [pin 3]

### U4 — [TPD2EUSB30](https://flux.ai/kicad-part-library/tpd2eusb30~px7.md)

- Datasheet URL: http://www\.ti\.com/lit/ds/symlink/tpd2eusb30a\.pdf
- Manufacturer Name: Texas Instruments Inc\.
- Role: USB ESD protection
- Role Details: Upstream USB D\+/D\- low\-capacitance ESD protection
- Package or Case Code: Texas\_DRT\-3
- Functional Group: IO J1 Hub and Card Edge
- Manufacturer Part Number: TPD2EUSB30

**Pins:**
- D\- [pin 2]
- D\+ [pin 1]
- GND [pin 3]

### U5 — [TPD2EUSB30](https://flux.ai/kicad-part-library/tpd2eusb30~px7.md)

- Datasheet URL: http://www\.ti\.com/lit/ds/symlink/tpd2eusb30a\.pdf
- Role Details: USB2422 downstream port 1 ESD protection
- Role: Protection
- Manufacturer Name: Texas Instruments Inc\.
- Functional Group: IO J1 Hub and Card Edge
- Package or Case Code: Texas\_DRT\-3
- Manufacturer Part Number: TPD2EUSB30

**Pins:**
- D\- [pin 2]
- D\+ [pin 1]
- GND [pin 3]

### U6 — [TPD2EUSB30](https://flux.ai/kicad-part-library/tpd2eusb30~px7.md)

- Datasheet URL: http://www\.ti\.com/lit/ds/symlink/tpd2eusb30a\.pdf
- Manufacturer Name: Texas Instruments Inc\.
- Role: Protection
- Role Details: USB2422 downstream port 2 ESD protection
- Functional Group: IO J1 Hub and Card Edge
- Package or Case Code: Texas\_DRT\-3
- Manufacturer Part Number: TPD2EUSB30

**Pins:**
- D\- [pin 2]
- D\+ [pin 1]
- GND [pin 3]

### Y1 — [ABM8G\-24\.000MHZ\-B4Y\-T](https://flux.ai/adrian95/abm8g-24p000mhz-b4y-t~8gr.md)

- License: https://creativecommons\.org/licenses/by/4\.0/
- Role: Clock
- Manufacturer Name: Abracon LLC
- Role Details: 24 MHz USB2422 reference crystal
- Manufacturer Part Number: ABM8G\-24\.000MHZ\-B4Y\-T
- Package or Case Code: ABM8G
- Functional Group: IO J1 Hub and Card Edge
- Part Type: Oscillator
- Datasheet URL: https://abracon\.com/Resonators/ABM8G\.pdf

**Pins:**
- GND\_1 [pin 2]
- GND\_2 [pin 4]
- XTAL\_1 [pin 1]
- XTAL\_2 [pin 3]

*The full schematic, PCB layout, bill of materials, and interactive design are available at [https://flux\.ai/cevdetboz/sam4extensionv5\~of](https://flux.ai/cevdetboz/sam4extensionv5~of).*

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*Generated from [https://flux\.ai/cevdetboz/sam4extensionv5\~of](https://flux.ai/cevdetboz/sam4extensionv5~of)*