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PCF8574MT

Public Made by Adom

by adom

HGSEMI I/O Expanders, TSSOP-16. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Contents

README

markdown

PCF8574MT

HGSEMI · I/O Expanders · TSSOP-16

PCF8574MT from HGSEMI, 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 A0 input Address input 0; tied to VSS or VDD to select one of eight device addresses.
2 A1 input Address input 1; tied to VSS or VDD to select one of eight device addresses.
3 A2 input Address input 2; tied to VSS or VDD to select one of eight device addresses.
4 P0 bidirectional Quasi-bidirectional I/O 0; capable of sinking 10 to 25 mA at 1 V output level.
5 P1 bidirectional Quasi-bidirectional I/O 1; capable of sinking 10 to 25 mA at 1 V output level.
6 P2 bidirectional Quasi-bidirectional I/O 2; capable of sinking 10 to 25 mA at 1 V output level.
7 P3 bidirectional Quasi-bidirectional I/O 3; capable of sinking 10 to 25 mA at 1 V output level.
8 VSS power_in Supply ground (0 V reference).
9 P4 bidirectional Quasi-bidirectional I/O 4; capable of sinking 10 to 25 mA at 1 V output level.
10 P5 bidirectional Quasi-bidirectional I/O 5; capable of sinking 10 to 25 mA at 1 V output level.
11 P6 bidirectional Quasi-bidirectional I/O 6; capable of sinking 10 to 25 mA at 1 V output level.
12 P7 bidirectional Quasi-bidirectional I/O 7; capable of sinking 10 to 25 mA at 1 V output level.
13 INT output Open-drain interrupt output (active LOW); minimum 1.6 mA sink capability at 0.4 V.
14 SCL bidirectional I2C serial clock line; open-drain bidirectional, minimum 3 mA sink capability at 0.4 V.
15 SDA bidirectional I2C serial data line; open-drain bidirectional, minimum 3 mA sink capability at 0.4 V.
16 VDD power_in Supply voltage; rated 2.5 to 6 V.

Key specifications

Parameter Value
Manufacturer HGSEMI
Package TSSOP-16
Category Interface
Pins 16

CAD (KiCad official)

  • Symbol: PCF8574MT
  • Footprint: Package_SO:TSSOP-16_4.4x5mm_P0.65mm
  • 3D model: TSSOP-16 (KiCad packages3D, STEP)
  • 3D model files: pcf8574mt-etched.step / pcf8574mt-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); pcf8574mt.step / pcf8574mt.glb are the bare package body.

Provenance

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

  • Datasheet: HGSEMI datasheet (18 pp, sha256 f24fdc7f482c8392, retrieved 2026-09-22, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.2, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-4-6 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF