component

NCA9555PWJ

Public Unreviewed

by Ray

Nexperia I/O Expanders, TSSOP-24. Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentinterfacenca9555pwj
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity

3D Model

Open in new tab ↗
Loads on click. Unloads when scrolled away or the tab is hidden.

Symbol & Footprint

Schematic Symbol

Open full view ↗
Loads on click. Unloads when scrolled away or the tab is hidden.

PCB Footprint

Open full view ↗
Loads on click. Unloads when scrolled away or the tab is hidden.

Datasheet

Open in new tab ↗
Loads on click. Unloads when scrolled away or the tab is hidden.
Download PDF
Contents

README

markdown

NCA9555PWJ

Nexperia · I/O Expanders · TSSOP-24

NCA9555PWJ from Nexperia, in a TSSOP-24. 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 INT output Open-drain active LOW interrupt output. Connect to VCC through a pull-up resistor. Asserted when any GPIO configured as input changes from its corresponding Input port register state.
2 A1 input Hardware address input 1. Connect directly to VCC or GND to set one of the eight possible I2C slave addresses.
3 A2 input Hardware address input 2. Connect directly to VCC or GND to set one of the eight possible I2C slave addresses.
4 P0_0 bidirectional Parallel port I/O bit 0 of port 0. Push-pull driver; can source or sink up to 25 mA. Powers up as a high-impedance input.
5 P0_1 bidirectional Parallel port I/O bit 1 of port 0. Push-pull driver; powers up as a high-impedance input.
6 P0_2 bidirectional Parallel port I/O bit 2 of port 0. Push-pull driver; powers up as a high-impedance input.
7 P0_3 bidirectional Parallel port I/O bit 3 of port 0. Push-pull driver; powers up as a high-impedance input.
8 P0_4 bidirectional Parallel port I/O bit 4 of port 0. Push-pull driver; powers up as a high-impedance input.
9 P0_5 bidirectional Parallel port I/O bit 5 of port 0. Push-pull driver; powers up as a high-impedance input.
10 P0_6 bidirectional Parallel port I/O bit 6 of port 0. Push-pull driver; powers up as a high-impedance input.
11 P0_7 bidirectional Parallel port I/O bit 7 of port 0. Push-pull driver; powers up as a high-impedance input.
12 GND power_in Ground reference for the device.
13 P1_0 bidirectional Parallel port I/O bit 0 of port 1. Push-pull driver; powers up as a high-impedance input.
14 P1_1 bidirectional Parallel port I/O bit 1 of port 1. Push-pull driver; powers up as a high-impedance input.
15 P1_2 bidirectional Parallel port I/O bit 2 of port 1. Push-pull driver; powers up as a high-impedance input.
16 P1_3 bidirectional Parallel port I/O bit 3 of port 1. Push-pull driver; powers up as a high-impedance input.
17 P1_4 bidirectional Parallel port I/O bit 4 of port 1. Push-pull driver; powers up as a high-impedance input.
18 P1_5 bidirectional Parallel port I/O bit 5 of port 1. Push-pull driver; powers up as a high-impedance input.
19 P1_6 bidirectional Parallel port I/O bit 6 of port 1. Push-pull driver; powers up as a high-impedance input.
20 P1_7 bidirectional Parallel port I/O bit 7 of port 1. Push-pull driver; powers up as a high-impedance input.
21 A0 input Hardware address input 0. Connect directly to VCC or GND to set one of the eight possible I2C slave addresses.
22 SCL input I2C serial clock input. Connect to VCC through a pull-up resistor. Supports 400 kHz Fast-mode I2C.
23 SDA bidirectional I2C serial data line. Open-drain; connect to VCC through a pull-up resistor.
24 VCC power_in Supply voltage. Operating range 1.65 V to 5.5 V. Bypass with a decoupling capacitor to GND close to the pin.

Key specifications

Parameter Value
Manufacturer Nexperia
Package TSSOP-24
Category Interface
Pins 24

Ordering variants

Same part, different packaging or reel option.

  • NCA9555PWJ
  • NCA9555PWJBY

CAD (KiCad official)

  • Symbol: NCA9555PWJ
  • Footprint: Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm
  • 3D model: TSSOP-24 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: Nexperia datasheet (31 pp, sha256 b519b13925fcf8be, 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