component

MM74HCT08MTCX

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by Ray

onsemi Logic Gates, TSSOP-14. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Contents

README

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MM74HCT08MTCX

onsemi · Logic Gates · TSSOP-14

MM74HCT08MTCX from onsemi, in a TSSOP-14. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 A1 input Gate 1 input A. TTL-compatible logic input (VIH >= 2.0V, VIL <= 0.8V) to the first 2-input AND gate; output Y1 = A1 AND B1.
2 B1 input Gate 1 input B. TTL-compatible logic input to the first 2-input AND gate; output Y1 = A1 AND B1.
3 Y1 output Gate 1 output. AND of A1 and B1. Drives up to 10 LS-TTL loads; guaranteed VOH >= VCC-0.1V at 20µA, VOL <= 0.4V at 4.0mA (VCC=4.5V).
4 A2 input Gate 2 input A. TTL-compatible logic input to the second 2-input AND gate; output Y2 = A2 AND B2.
5 B2 input Gate 2 input B. TTL-compatible logic input to the second 2-input AND gate; output Y2 = A2 AND B2.
6 Y2 output Gate 2 output. AND of A2 and B2. Drives up to 10 LS-TTL loads.
7 GND power_in Ground reference (0V). All input protection diodes return to this rail.
8 Y3 output Gate 3 output. AND of A3 and B3. Drives up to 10 LS-TTL loads.
9 A3 input Gate 3 input A. TTL-compatible logic input to the third 2-input AND gate; output Y3 = A3 AND B3.
10 B3 input Gate 3 input B. TTL-compatible logic input to the third 2-input AND gate; output Y3 = A3 AND B3.
11 Y4 output Gate 4 output. AND of A4 and B4. Drives up to 10 LS-TTL loads.
12 A4 input Gate 4 input A. TTL-compatible logic input to the fourth 2-input AND gate; output Y4 = A4 AND B4.
13 B4 input Gate 4 input B. TTL-compatible logic input to the fourth 2-input AND gate; output Y4 = A4 AND B4.
14 VCC power_in Positive supply voltage. Recommended operating range 4.5V to 5.5V; absolute max -0.5V to +7.0V. Decouple with a 100nF ceramic capacitor to GND close to the pin.

Key specifications

Parameter Value
Manufacturer onsemi
Package TSSOP-14
Category Logic
Pins 14

Ordering variants

Same part, different packaging or reel option.

  • MM74HCT08MTCX
  • MM74HCT08MTCXM
  • MM74HCT08MTCXMX
  • MM74HCT08MTCXSJ
  • MM74HCT08MTCXSJX
  • MM74HCT08MTCXN

CAD (KiCad official)

  • Symbol: MM74HCT08MTCX
  • Footprint: Package_SO:TSSOP-14_4.4x5mm_P0.65mm
  • 3D model: TSSOP-14 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: onsemi datasheet (None pp, sha256 e913c83bee91e88e, retrieved 2026-08-17, tier: lcsc)
  • 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