PCA9534PWR

I/o Expanders Overview

The PCA9534PWR is a remote 8-bit I2C and SMBus low-power I/O expander 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 an interrupt output pin and configuration registers for flexible input/output direction control. It is housed in a TSSOP-16 surface-mount package and provides ESD protection rated at 2 kV. The component functions across an industrial temperature range from -40°C to +85°C, making it suitable for various interface expansion applications requiring low power consumption.

I/o Expanders Feature Summary

• Provides eight bidirectional digital I/O lines accessible via standard I2C or SMBus protocols
• Includes dedicated interrupt output pin to signal state changes on configured inputs
• Features configuration registers allowing individual pin direction setting for input or output mode

I/o Expanders Applications

• Remote I/O expansion in embedded systems with limited microcontroller pins
• Consumer electronics requiring additional GPIO for button or LED interfacing
• Industrial control panels needing isolated input monitoring

I/o Expanders Procurement Notes

Verify the specific suffix 'PWR' corresponds to the TSSOP-16 package and reel packaging format as listed in official Texas Instruments documentation. Confirm RoHS compliance status through the manufacturer's current datasheet or environmental information files before procurement. Ensure the ordering part number matches the exact electrical specifications required for your design.

I/o Expanders Selection Notes

Select this component when an 8-bit I/O expander with interrupt capability is required for I2C-based designs. The TSSOP-16 package is appropriate for space-constrained PCB layouts. Verify that the system voltage falls within the 2.3 V to 5.5 V operating range. Consider the 400 kHz maximum clock speed if high-speed communication is necessary for the application.

I/o Expanders Part Context

This device belongs to the PCA9534 series of I/O expanders from Texas Instruments. It shares functional similarities with other members like the PCA9534APWR but may differ in specific manufacturing revisions or package variants. The PWR suffix specifically denotes the TSSOP-16 plastic small-outline package type used for surface mount assembly.

I/o Expanders Replacement Considerations

The PCA9534APWR is a documented variant within the same family offering identical functionality. Other compatible devices include the PCA9534DB in SSOP-16 packaging. Verify pin compatibility and register mapping before substituting with any alternative part numbers.