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PCA9535PWJ

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Nexperia I/O Expanders, TSSOP-24. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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PCA9535PWJ

Nexperia · I/O Expanders · TSSOP-24

PCA9535PWJ from Nexperia, in a TSSOP-24. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); 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.
2 A1 input Address input 1; connect directly to VCC or GND.
3 A2 input Address input 2; connect directly to VCC or GND.
4 P0_0 bidirectional Parallel port I/O with push-pull driver; at power-on it is a high-impedance input.
5 P0_1 bidirectional Parallel port I/O with push-pull driver; at power-on it is a high-impedance input.
6 P0_2 bidirectional Parallel port I/O with push-pull driver; at power-on it is a high-impedance input.
7 P0_3 bidirectional Parallel port I/O with push-pull driver; at power-on it is a high-impedance input.
8 P0_4 bidirectional Parallel port I/O with push-pull driver; at power-on it is a high-impedance input.
9 P0_5 bidirectional Parallel port I/O with push-pull driver; at power-on it is a high-impedance input.
10 P0_6 bidirectional Parallel port I/O with push-pull driver; at power-on it is a high-impedance input.
11 P0_7 bidirectional Parallel port I/O with push-pull driver; at power-on it is a high-impedance input.
12 GND power_in Ground.
13 P1_0 bidirectional Parallel port I/O with push-pull driver; at power-on it is a high-impedance input.
14 P1_1 bidirectional Parallel port I/O with push-pull driver; at power-on it is a high-impedance input.
15 P1_2 bidirectional Parallel port I/O with push-pull driver; at power-on it is a high-impedance input.
16 P1_3 bidirectional Parallel port I/O with push-pull driver; at power-on it is a high-impedance input.
17 P1_4 bidirectional Parallel port I/O with push-pull driver; at power-on it is a high-impedance input.
18 P1_5 bidirectional Parallel port I/O with push-pull driver; at power-on it is a high-impedance input.
19 P1_6 bidirectional Parallel port I/O with push-pull driver; at power-on it is a high-impedance input.
20 P1_7 bidirectional Parallel port I/O with push-pull driver; at power-on it is a high-impedance input.
21 A0 input Address input 0; connect directly to VCC or GND.
22 SCL input Serial clock bus; connect to VCC through a pull-up resistor.
23 SDA bidirectional Serial data bus; connect to VCC through a pull-up resistor.
24 VCC power_in Supply voltage; operating range 2.3 V to 5.5 V.

Key specifications

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

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
VCC supply voltage VCC 2.3 5.5 V 16
Ambient temperature Tamb -40 85 °C operating in free air 16
HIGH-level output current IOH 10 mA P1_7 to P0_0 16
LOW-level output current IOL 25 mA P1_7 to P0_0 16
VCC supply voltage VCC -0.5 6 V 15
Input voltage VI -0.5 6 V 15
Output voltage VO -0.5 6 V 15
Input clamping current IIK -20 mA A0, A1, A2, SCL; VI < 0 V 15
Output clamping current IOK -20 mA INT; VO < 0 V 15
Input/output clamping current IIOK -20 20 mA P port; VO < 0 V or VO > VCC 15
Input/output clamping current IIOK -20 mA SDA; VO < 0 V 15
LOW-level output current IOL 50 mA continuous; I/O port 15
LOW-level output current IOL 25 mA continuous; SDA, INT 15
HIGH-level output current IOH 25 mA continuous; P port 15
Supply current ICC 160 mA 15
Ground supply current IGND 250 mA 15
Total power dissipation Ptot 200 mW 15
Storage temperature Tstg -65 150 °C 15
Maximum junction temperature Tj(max) 100 °C 15
Transient thermal impedance, junction to ambient Zth(j-a) 100 K/W TSSOP24 package 16
Power-on reset trip voltage, VCC rising VPORR 1.25 1.55 V VI = VCC or GND; IO = 0 mA 17
Input clamping voltage VIK -1.2 V II = -18 mA 17
LOW-level output current (SDA) IOL 3 mA VOL = 0.4 V; VCC = 2.3 V to 5.5 V; SDA 17
LOW-level output current (INT) IOL 3 28 mA VOL = 0.4 V; VCC = 2.3 V to 5.5 V; INT 17
LOW-level output current (P port) IOL 8 mA P port; VOL = 0.5 V; VCC = 2.3 V 17
LOW-level output current (P port) IOL 10 mA P port; VOL = 0.7 V; VCC = 2.3 V 17
HIGH-level output voltage (P port) VOH 2 V P port; IOH = -8 mA; VCC = 2.3 V 17
HIGH-level output voltage (P port) VOH 1.9 V P port; IOH = -10 mA; VCC = 2.3 V 17
HIGH-level output voltage (P port) VOH 2.6 V P port; IOH = -8 mA; VCC = 3.0 V 17
HIGH-level output voltage (P port) VOH 2.5 V P port; IOH = -10 mA; VCC = 3.0 V 17
HIGH-level output voltage (P port) VOH 4.1 V P port; IOH = -8 mA; VCC = 4.5 V 17
HIGH-level output voltage (P port) VOH 4 V P port; IOH = -10 mA; VCC = 4.5 V 17
LOW-level output voltage (P port) VOL 0.3 V P port; IOL = 8 mA; VCC = 2.3 V 17
LOW-level output voltage (P port) VOL 0.25 V P port; IOL = 8 mA; VCC = 3.0 V 17
LOW-level output voltage (P port) VOL 0.2 V P port; IOL = 8 mA; VCC = 4.5 V 17
Input current (SCL, SDA) II 1 μA SCL, SDA; VI = VCC or GND; VCC = 2.3 V to 5.5 V 17
Input current (A0, A1, A2) II -1 1 μA A0, A1, A2; VI = VCC or GND 17
HIGH-level input current (P port) IIH 1 μA P port; VI = VCC; VCC = 2.3 V to 5.5 V 17
LOW-level input current (P port) IIL -1 μA P port; VI = GND; VCC = 2.3 V to 5.5 V 17
Supply current, active mode ICC 15 55 μA Active mode; P port, A0, A1, A2 = VCC; IO = 0 mA; I/O = inputs; fSCL = 400 kHz; continuous register read; VCC = 3.6 V to 5.5 V 18
Supply current, active mode ICC 7.4 22 μA Active mode; P port, A0, A1, A2 = VCC; IO = 0 mA; I/O = inputs; fSCL = 400 kHz; continuous register read; VCC = 2.3 V to 3.6 V 18
Supply current (block label not printed in extracted text) 13 28 μA SDA, P port, A0, A1, A2; VI on SDA = VCC or GND; VI on P port and A0, A1, A2 = VCC; IO = 0 mA; I/O = inputs; fSCL = 400 kHz (tr = 30 ns); VCC = 3.6 V to 5.5 V 18
Supply current (block label not printed in extracted text) 6.4 11 μA SDA, P port, A0, A1, A2; VI on SDA = VCC or GND; VI on P port and A0, A1, A2 = VCC; IO = 0 mA; I/O = inputs; fSCL = 400 kHz (tr = 30 ns); VCC = 2.3 V to 3.6 V 18
Supply current (block label not printed in extracted text) 1 μA SCL, SDA, P port, A0, A1, A2; VI on SCL, SDA = VCC or GND; VI on P port and A0, A1, A2 = VCC; IO = 0 mA; I/O = inputs; fSCL = 0 kHz; VCC = 2.3 V to 5.5 V 18
Additional quiescent supply current (SCL, SDA) ΔICC 4.5 μA SCL, SDA; one input at VCC - 0.6 V, other inputs at VCC or GND; VCC = 2.3 V to 5.5 V 18
Additional quiescent supply current (P port, A0, A1, A2) ΔICC 13 μA P port, A0, A1, A2; one input at VCC - 0.6 V, other inputs at VCC or GND; VCC = 2.3 V to 5.5 V 18
Input capacitance Ci 1.5 2.5 pF VI = VCC or GND; VCC = 2.3 V to 5.5 V 18
Input/output capacitance Cio 3 4.5 pF VI/O = VCC or GND; VD = 2.3 V to 5.5 V 18
SCL clock frequency fSCL 0 100 kHz Standard-mode I²C-bus 22
SCL clock frequency fSCL 0 400 kHz Fast-mode I²C-bus 22
Rise time of both SDA and SCL signals tr 1000 ns Standard-mode I²C-bus 22
Rise time of both SDA and SCL signals tr 20 300 ns Fast-mode I²C-bus 22
Data valid time, SCL LOW to SDA output valid tVD;DAT 3.45 μs Standard-mode I²C-bus 22
Data valid time, SCL LOW to SDA output valid tVD;DAT 0.9 μs Fast-mode I²C-bus 22
Reset delay time td(rst) 300 ms Fig. 14; re-ramp time when VCC drops to GND 14
Supply ramp-up time trise(VCC) 0.1 2000 ms Fig. 14 14

CAD (KiCad official)

  • Symbol: PCA9535PWJ
  • Footprint: Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm
  • 3D model: TSSOP-24 (KiCad packages3D, STEP)
  • 3D model files: pca9535pwj-etched.step / pca9535pwj-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); pca9535pwj.step / pca9535pwj.glb are the bare package body.

Provenance

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

  • Datasheet: Nexperia datasheet (29 pp, sha256 adbdb0188049720e, retrieved 2026-10-18, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (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