PCA9534APWR

I/o Expanders Overview

The PCA9534APWR 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, configuration registers, and ESD protection rated at 2 kV. It is housed in a TSSOP-16 package suitable for surface mount installation. The component functions across a temperature range from -40°C to +85°C.

I/o Expanders Feature Summary

• Provides eight bidirectional digital input/output ports accessible via standard I2C or SMBus protocols.
• Includes dedicated interrupt output pin to signal state changes on configured input pins.
• Features configuration registers allowing individual pin direction setting for input or output modes.

I/o Expanders Applications

• Remote I/O expansion in embedded systems requiring additional GPIOs over serial buses.
• Low-power consumer electronics utilizing I2C communication interfaces.
• Industrial control panels needing isolated input monitoring with interrupt capabilities.

I/o Expanders Procurement Notes

Verify the specific suffix 'PWR' corresponds to the TSSOP-16 tape-and-reel packaging format when sourcing. Confirm that the operating voltage requirements align with the 2.3 V to 5.5 V specification. Ensure compatibility with the host controller's I2C/SMBus voltage levels and pull-up resistor configurations before integration.

I/o Expanders Selection Notes

Select this component when eight digital I/O lines are required with interrupt functionality. It is suitable for designs needing wide supply voltage flexibility between 2.3 V and 5.5 V. Consider the TSSOP-16 package constraints for PCB layout. Verify if the 400 kHz maximum clock speed meets the system's data rate requirements.

I/o Expanders Part Context

This part belongs to the PCA9534A series of low-power I/O expanders. It shares core functionalities with similar Texas Instruments devices like the PCA9534DB but differs in package type and manufacturing lot specifics. The series is designed for applications requiring simple, cost-effective expansion of microcontroller I/O resources via standard serial interfaces.

I/o Expanders Replacement Considerations

The PCA9534DB serves as a functional alternative offering identical electrical characteristics but utilizes an SSOP-16 package instead of TSSOP-16. Verify footprint compatibility and pin alignment before substitution. Other series members may lack the specific interrupt or configuration features present in this model.