PCA9534PW,118 – 8-bit I²C/SMBus GPIO Expander

NXP Semiconductors – Complete Technical & Orderable Summary

1. Device Identity

2. Package & Mechanical Data

• Package Name: TSSOP16
• JEDEC Code: MO-153
• NXP Outline Ref.: SOT403-1
• Pins: 16
• Lead Pitch: 0.65 mm
• Body Size: 5.1 mm × 4.5 mm × 1.1 mm max.
• RoHS / Pb-Free: Yes
• MSL Rating: MSL-1 (unlimited floor life in dry pack)

3. Electrical Highlights

• Supply Range: 2.3 V – 5.5 V
• 5 V-Tolerant I/Os: Yes (independent of VDD)
• Stand-by Current: 0.25 µA typ. (1 µA max.) @ 5.5 V, 25 °C
• Max I²C Clock: 400 kHz (Fast-mode)
• Interrupt Output: Open-drain, active-low INT pin
• ESD Performance:2000 V HBM (JESD22-A114)200 V MM (JESD22-A115)1000 V CDM (JESD22-C101)
• Latch-up: > 100 mA (JESD78)

4. Functional Overview

• 8 General-Purpose I/OsPower-on default = inputs (high-impedance)Individual pin configurability (Input / Output)
• Four 8-bit Registers0. Input Port (read-only)Output Port (read/write)Polarity Inversion (read/write)Configuration (read/write)
• Interrupt Generation: Any input-change vs. register state asserts INT
• Device Addressing: 3 hardware address pins (A0-A2) ⇒ 8 unique addresses (0x20-0x27)
• Power-On Reset: Active until VDD ≥ 1.7 V typ.; full reset achieved when VDD < 0.2 V

5. Temperature Ratings

• Operating Ambient: -40 °C to +85 °C
• Storage: -65 °C to +150 °C
• Junction: +150 °C max.

6. Key Applications

• ACPI power-switch interfaces
• Sensors, push-buttons, key-pads
• LED / fan control in servers & routers
• Battery-powered handhelds (ultra-low standby)
• Industrial I/O expansion

7. Compatible & Companion Devices

• Same footprint: PCA9554PW (includes internal pull-ups)
• Higher density: PCA9535 (16-bit), PCA9539 (16-bit with reset)
• I²C buffers: P82B96, PCA9515/16/18 for long-bus or multi-drop systems

8. Regulatory / Compliance

• RoHS: 2011/65/EU & 2015/863 (REACH) compliant
• Pb-Free: 100 % matte-tin plating
• Halogen-Free: JEDEC JS709A low-halogen claim
• CE / FCC: Suitable for unintentional-radiator designs when good PCB practice is followed

9. Documentation & Support

• Datasheet: PCA9534 rev. 4 – 7 Nov 2017
• Application Note: AN469 – “PCA9534/55 Software Considerations”
• PCB Footprint: Available in Altium, PADS, KiCad libraries (search “SOT403-1”)
• Thermal Model: Junction-to-ambient θJA = 111 °C/W (1 oz. PCB, still air)

10. Ordering Summary (PCA9534PW,118)