TCA9534APWR

Overview

The TCA9534APWR is a remote 8-bit I/O expander manufactured by Texas Instruments, designed for low-voltage applications. It operates within a supply voltage range of 1.65 V to 5.5 V and supports I2C and SMBus interfaces with a maximum clock frequency of 400 kHz. The device features an interrupt output pin and configuration registers for flexible input/output direction control. It functions across an extended temperature range from -40°C to +85°C and includes 2 kV ESD protection. The component is housed in a TSSOP-16 package.

Feature Summary

• Supports I2C and SMBus communication protocols for system integration
• Includes dedicated interrupt output pin for efficient event handling
• Features configuration registers allowing individual pin direction setting

Applications

• Portable consumer electronics requiring low power consumption
• Industrial control systems utilizing I2C/SMBus networks
• Embedded systems needing additional GPIO expansion

Procurement Notes

Verify the specific ordering suffix to confirm the TSSOP-16 package type, as other suffixes may indicate different physical footprints such as SOIC or TVSOP. Confirm RoHS compliance status through official manufacturer documentation before procurement. Ensure the selected variant matches the required operating voltage and temperature specifications for the target application environment.

Selection Notes

Select this component when an 8-bit I/O expansion solution is required with low-power operation capabilities. Compare against the PCA9534 series if a higher minimum voltage threshold of 2.3 V is acceptable, as the TCA9534A supports lower voltages down to 1.65 V. Verify that the TSSOP-16 package dimensions fit the PCB layout constraints and that the I2C address configuration meets system requirements.

Part Context

This part belongs to the TCA9534A family of low-voltage I/O expanders. It shares functional similarities with the PCA9534 series but offers a wider input voltage range starting at 1.65 V. Other variants in the family include TCA9534ADWR and TCA9534APWRG4, which differ primarily in package style or manufacturing revision codes while maintaining identical electrical characteristics.

Replacement Considerations

The PCA9534ADGVR serves as a functional alternative within the same product family. Note that the PCA9534 series has a minimum operating voltage of 2.3 V, whereas the TCA9534A supports 1.65 V. Package differences exist between TSSOP-16 and TVSOP-16 variants; verify mechanical compatibility before substitution.