Part Datasheet Review and Verification

flux

4:12

Project

File

PCB Layout

Schematic

Gather.

Fetching.

Checking.

Compar.

Using Schematic Tool.

Using PCB Layout Tool.

Looking for "Features" in sn74hc08.pdf

Looking for "Absolute Maximum Ratings" in sn74hc08.pdf

Looking for "Recommended Operating Conditions" in sn74hc08.pdf

Looking for "Electrical Characteristics" in sn74hc08.pdf

Looking for "Pin Configuration and Functions" in sn74hc08.pdf

Looking for "Pin Functions table" in sn74hc08.pdf

Looking for "Package dimensions N package" in sn74hc08.pdf

Looking for "Mechanical data for package N" in sn74hc08.pdf

Looking for "ESD ratings" in sn74hc08.pdf

Looking for "Latch-up performance" in sn74hc08.pdf

Looking for "Truth table" in sn74hc08.pdf

Looking for "Supply voltage range" in sn74hc08.pdf

Looking for "Operating free-air temperature range SN74HC08" in sn74hc08.pdf

Looking for "Operating free-air temperature range SN54HC08" in sn74hc08.pdf

Here is a complete, step-by-step execution for the part project for SN74HC08NG4.

Step 1 — Review available part information

MPN: SN74HC08NG4
Manufacturer: Texas Instruments
Part type: Integrated Circuits
Description: IC GATE AND 4CH 2-INP 14DIP
Datasheet: Datasheet
Schematic pin count: 14 pins present as terminals:
- Left group: 1A, 1B, 1Y, 2A, 2B, 2Y, GND
- Right group: 3Y, 3A, 3B, 4Y, 4A, 4B, VCC
Footprint presence: Yes — a PDIP-14 footprint is defined at a587f68f-0884-4147-98b1-d2b5e63258ea.defaultFootprint using the asset “DIP794W53P254L1930H508Q14N.kicad_mod” with an included 3D model “SN74HC08NG4.stp”.

Step 2 — Datasheet URL check and set

A datasheet URL is already set on this part: Datasheet. No change needed.

Step 3 — Datasheet scan and metadata extraction Key features (per Datasheet)

Buffered inputs
Wide operating voltage range: 2 V to 6 V
Wide operating temperature range: –40°C to +85°C
Supports fanout up to 10 LSTTL loads
Significant power reduction compared to LSTTL logic ICs

Absolute Maximum Ratings

Table

Parameter	Min	Max	Unit	Notes
VCC (Supply voltage)	-0.5	7	V
IIK (Input clamp current)		±20	mA	VI VCC
IOK (Output clamp current)		±20	mA	VO < 0
IO (Continuous output current)		±25	mA	VO = 0 to VCC
Continuous current (VCC or GND)		±50	mA
TJ (Junction temperature)		150	°C
Tstg (Storage temperature)	-60	150	°C

Recommended Operating Conditions

Table

Parameter	Condition	Min	Typ	Max	Unit
VCC	Supply voltage	2	5	6	V
VIH	VCC = 2 V	1.5			V
VIH	VCC = 4.5 V	3.15			V
VIH	VCC = 6 V	4.2			V
VIL	VCC = 2 V			0.5	V
VIL	VCC = 4.5 V			1.35	V
VIL	VCC = 6 V			1.8	V
VI	Input voltage	0		VCC	V
VO	Output voltage	0		VCC	V
Δt/Δv	VCC = 2 V			1000	ns
Δt/Δv	VCC = 4.5 V			500	ns
Δt/Δv	VCC = 6 V			400	ns
TA (Operating free-air temperature)	SN74HC08	−55		125	°C
TA (Operating free-air temperature)	SN54HC08	−55		125	°C

Note from Datasheet: “All unused inputs of the device must be held at VCC or GND to ensure proper device operation.”

Electrical Characteristics (selected)

Table

Parameter	Condition	VCC	TA	Min	Typ	Max	Unit
VOH	IOH = −20 µA	2	25°C	1.9	1.998		V
VOH	IOH = −20 µA	4.5	25°C	4.4	4.499		V
VOH	IOH = −20 µA	6	25°C	5.9	5.999		V
VOH	IOH = −4 mA	4.5		3.98	4.3		V
VOH	IOH = −5.2 mA	6		5.48	5.8		V
VOL	IOL = 20 µA	2	25°C		0.002	0.1	V
VOL	IOL = 20 µA	4.5	25°C		0.001	0.1	V
VOL	IOL = 20 µA	6	25°C		0.001	0.1	V
VOL	IOL = 4 mA	4.5			0.26	0.4	V
VOL	IOL = 5.2 mA	6			0.26	0.4	V
II	VI = VCC or 0	6			±0.1	±1	µA
ICC	VI = VCC or 0, IO = 0	6		2	20	40	µA
Ci		2 to 6		3	10	10	pF

ESD Ratings

Table

Model	Rating
HBM (ANSI/ESDA/JEDEC JS-001)	±2000 V
CDM (JESD22-C101)	±1000 V

Pin configuration and functions (N/PDIP-14 package)

Table

Name	Pin (N)	I/O	Description
1A	1	Input	Channel 1, Input A
1B	2	Input	Channel 1, Input B
1Y	3	Output	Channel 1, Output Y
2A	4	Input	Channel 2, Input A
2B	5	Input	Channel 2, Input B
2Y	6	Output	Channel 2, Output Y
GND	7	—	Ground
3Y	8	Output	Channel 3, Output Y
3A	9	Input	Channel 3, Input A
3B	10	Input	Channel 3, Input B
4Y	11	Output	Channel 4, Output Y
4A	12	Input	Channel 4, Input A
4B	13	Input	Channel 4, Input B
VCC	14	—	Positive supply

Package dimensions (N = PDIP-14)

Package size (L × W): 19.3 mm × 9.4 mm
Body size (L × W): 19.30 mm × 6.40 mm

Additional device notes

Clamp diodes present on inputs and outputs (positive and negative direction). Exceeding recommended input/output voltage ratings may be acceptable if input/output clamp-current ratings are observed.

Step 4 — Cross-check symbol and footprint vs. datasheet Schematic symbol pin mapping vs. datasheet (N/PDIP-14)

Table

Pin Name	Schematic Pin No.	Datasheet Pin No. (N)	Match
1A	1	1	Yes
1B	2	2	Yes
1Y	3	3	Yes
2A	4	4	Yes
2B	5	5	Yes
2Y	6	6	Yes
GND	7	7	Yes
3Y	8	8	Yes
3A	9	9	Yes
3B	10	10	Yes
4Y	11	11	Yes
4A	12	12	Yes
4B	13	13	Yes
VCC	14	14	Yes

Footprint cross-check

Footprint node: a587f68f-0884-4147-98b1-d2b5e63258ea.defaultFootprint
Library asset: DIP794W53P254L1930H508Q14N.kicad_mod
- Descriptor notes “N (R-PDIP-T14)”, consistent with TI’s N (PDIP-14) package.
- Pads 1–14 defined in a standard 2-row, 2.54 mm pitch layout; Pin 1 pad is rectangular (keying).
3D model present: “SN74HC08NG4.stp” matches the MPN family.

Flags and potential issues

Schematic: All pin names and numbers match the datasheet for the N (PDIP-14) package. No symbol mismatches found.
Footprint: The footprint name and structure align with the N (PDIP-14) package indicated by the datasheet. No footprint mismatches found.
Temperature range note: The “Features” section cites –40°C to +85°C, whereas the “Recommended Operating Conditions” table entries extracted list –55°C to +125°C for SN74HC08 and SN54HC08. If temperature rating is critical, verify the exact ordering code’s temp grade in the datasheet ordering information to ensure the SN74HC08NG4 variant aligns with your target operating range.

If you want, I can add the proper symbol with these 14 pins and explicitly bind them to the DIP-14 pad numbers in the footprint so the part is ready to drop into designs.

Run DRC/ERC review

Check unused inputs

Verify footprint dimensions

BOM MPN consistency

13 days

Ready.

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