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74HC4538PW-Q100118

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by Ray

Nexperia Monostable Multivibrators, TSSOP-16. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Datasheet

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Contents

README

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74HC4538PW-Q100118

Nexperia · Monostable Multivibrators · TSSOP-16

74HC4538PW-Q100118 from Nexperia, in a TSSOP-16. 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 1CEXT passive Multivibrator 1 external capacitor connection. Always connected to ground side of CEXT.
2 1REXT/CEXT passive Multivibrator 1 external resistor / capacitor connection. REXT ties to VCC; CEXT ties between this pin and 1CEXT. Pulse width TW = 0.7 x REXT x CEXT.
3 1nCD input Multivibrator 1 direct reset input, active LOW. A LOW level terminates the output pulse immediately.
4 1B input Multivibrator 1 trigger input B (positive-going / LOW-to-HIGH edge triggered). Schmitt-trigger input.
5 1nA input Multivibrator 1 trigger input A (negative-going / HIGH-to-LOW edge triggered). Schmitt-trigger input.
6 1Q output Multivibrator 1 non-inverting output; produces a HIGH pulse of width TW when triggered.
7 1nQ output Multivibrator 1 complementary (inverting, active-LOW) output; produces a LOW pulse of width TW when triggered.
8 GND power_in Ground reference, 0 V.
9 2nQ output Multivibrator 2 complementary (inverting, active-LOW) output; produces a LOW pulse of width TW when triggered.
10 2Q output Multivibrator 2 non-inverting output; produces a HIGH pulse of width TW when triggered.
11 2nA input Multivibrator 2 trigger input A (negative-going / HIGH-to-LOW edge triggered). Schmitt-trigger input.
12 2B input Multivibrator 2 trigger input B (positive-going / LOW-to-HIGH edge triggered). Schmitt-trigger input.
13 2nCD input Multivibrator 2 direct reset input, active LOW. A LOW level terminates the output pulse immediately.
14 2REXT/CEXT passive Multivibrator 2 external resistor / capacitor connection. REXT ties to VCC; CEXT ties between this pin and 2CEXT. Pulse width TW = 0.7 x REXT x CEXT.
15 2CEXT passive Multivibrator 2 external capacitor connection. Always connected to ground side of CEXT.
16 VCC power_in Supply voltage, 2.0 V to 6.0 V (recommended). Absolute maximum 7.0 V.

Key specifications

Parameter Value
Manufacturer Nexperia
Package TSSOP-16
Category Logic
Pins 16

Ordering variants

Same part, different packaging or reel option.

  • 74HC4538PW-Q100118
  • 74HC4538D-Q100

CAD (KiCad official)

  • Symbol: 74HC4538PW-Q100118
  • Footprint: Package_SO:TSSOP-16_4.4x5mm_P0.65mm
  • 3D model: TSSOP-16 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: Nexperia datasheet (17 pp, sha256 0cb248d4f3d3ea23, 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