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SN74HC08 Quad AND Gate

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by Ray

Quad 2-input AND gate in the 74HC CMOS family.

logicand-gate74hccmostisoic-14
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SN74HC08

Texas Instruments · Logic Gate · SOIC-14

The SN74HC08 contains four independent 2-input AND gates in the 74HC CMOS logic family. Each output goes high only when both inputs are high, useful for gating clocks and enables, combining flags, and general glue logic.

Pinout

Pin Name Type Function
1 1A input Channel 1, Input A. Logic input to gate 1 (buffered CMOS input). V_IH ≥ 3.15 V at V_CC = 4.5 V; input leakage ±0.1 µA typ.
2 1B input Channel 1, Input B. Logic input to gate 1 (buffered CMOS input).
3 1Y output Channel 1, Output Y. AND output: Y = 1A · 1B. Drives up to ±4 mA at V_CC = 4.5 V with V_OH ≥ 3.98 V / V_OL ≤ 0.26 V.
4 2A input Channel 2, Input A. Logic input to gate 2.
5 2B input Channel 2, Input B. Logic input to gate 2.
6 2Y output Channel 2, Output Y. AND output: Y = 2A · 2B.
7 GND power_in Ground reference (0 V). Common return for V_CC.
8 3Y output Channel 3, Output Y. AND output: Y = 3A · 3B.
9 3A input Channel 3, Input A. Logic input to gate 3.
10 3B input Channel 3, Input B. Logic input to gate 3.
11 4Y output Channel 4, Output Y. AND output: Y = 4A · 4B.
12 4A input Channel 4, Input A. Logic input to gate 4.
13 4B input Channel 4, Input B. Logic input to gate 4.
14 VCC power_in Positive supply. Operating range 2 V to 6 V (recommended); absolute max 7 V.

Key specifications

Parameter Value
Type Quad 2-input AND gate
Logic family 74HC (CMOS)
Supply voltage 2 V to 6 V
Output current +-5.2 mA at VCC = 4.5 V
Propagation delay 8 ns typ at 5 V
Operating temperature -40 C to 85 C

Ordering variants

Same part, different packaging or reel option.

  • SN74HC08D
  • SN74HC08DB
  • SN74HC08N
  • SN74HC08NS
  • SN74HC08PW
  • SN74HC08FK
  • SN74HC08J
  • SN74HC08W

CAD (KiCad official)

  • Symbol: sn74hc08.kicad_sym
  • Footprint: sn74hc08.kicad_mod
  • 3D model: SOIC-14 body from KiCad Package_SO/SOIC-14_3.9x8.7mm_P1.27mm.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (38 pp, sha256 7c6d615e4510b91b, retrieved 2026-08-17, tier: manufacturer)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF