PCA9534PW

I/o Expanders Overview

The PCA9534PW is an 8-bit I/O expander designed for I2C and SMBus interfaces, manufactured by Texas Instruments. It operates within a supply voltage range of 2.3 V to 5.5 V and supports clock frequencies up to 400 kHz. The device features configuration registers and an interrupt output pin, housed in a TSSOP-16 package. It functions across a temperature range of -40°C to +85°C and includes 2 kV ESD protection.

I/o Expanders Feature Summary

• Supports bidirectional data transfer via I2C and SMBus protocols
• Includes dedicated interrupt output pin for event signaling
• Features configuration registers for input/output direction control

I/o Expanders Applications

• Portable systems requiring low power I/O expansion
• Industrial control panels with limited microcontroller pins
• Consumer electronics utilizing I2C bus architectures

I/o Expanders Procurement Notes

Verify the manufacturer marking on the component body to confirm Texas Instruments origin. Ensure the suffix 'PW' corresponds to the TSSOP-16 package variant. Cross-reference the datasheet revision date with your design requirements to ensure compatibility with current interface standards.

I/o Expanders Selection Notes

Select this component when an 8-bit expansion is required for I2C/SMBus systems operating between 2.3 V and 5.5 V. Consider the TSSOP-16 package constraints for PCB layout. Verify that the 400 kHz maximum clock speed meets the system's communication timing requirements.

I/o Expanders Part Context

This part belongs to the PCA9534 series of remote 8-bit I/O expanders. It serves as a low-power solution for adding general-purpose I/O lines to microcontrollers. The PW suffix specifically denotes the TSSOP-16 surface-mount package format used by Texas Instruments.

I/o Expanders Replacement Considerations

The PCA9534PWR is a reel-packaged alternative from Texas Instruments with identical electrical specifications. The PCA9534DBR offers the same functionality in an SSOP-16 package. Check pinout compatibility before substituting different package types.