PCA9534DBR

I/o Expanders Overview

The PCA9534DBR 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 provides eight general-purpose digital input/output pins with interrupt output capability. It is housed in a 16-pin SSOP package suitable for surface mount applications. The component functions across an operating temperature range from -40°C to +85°C and includes configuration registers for pin direction control.

I/o Expanders Feature Summary

• Supports I2C and SMBus serial communication protocols for system integration
• Includes dedicated interrupt output pin for efficient event monitoring
• Features configuration registers allowing flexible input or output pin assignment

I/o Expanders Applications

• Portable consumer electronics requiring low power consumption
• Industrial control systems utilizing I2C bus architectures
• Embedded devices needing additional GPIO expansion via serial interfaces

I/o Expanders Procurement Notes

Verify the specific suffix 'DBR' corresponds to the 16-SSOP package and tape-and-reel packaging format. Confirm RoHS compliance status and manufacturing origin through official datasheets or authorized distributor documentation before procurement. Ensure compatibility with existing PCB footprint designs.

I/o Expanders Selection Notes

Select this component when an 8-bit I/O expansion solution is required with interrupt functionality. Verify that the 2.3 V minimum supply voltage meets system requirements, as some variants support lower voltages. Compare against TSSOP packages if board space constraints differ. Ensure the 400 kHz maximum clock speed aligns with bus timing requirements.

I/o Expanders Part Context

This part belongs to the PCA9534 series of remote I/O expanders. It shares functional similarities with other members like the PCA9534PW but differs in physical packaging. The DBR suffix specifically denotes the SSOP-16 form factor, distinguishing it from TSSOP or SOIC alternatives within the same logical family.

I/o Expanders Replacement Considerations

The PCA9534ADBR serves as a direct substitute offering identical electrical characteristics and pinout compatibility. Both parts utilize the 16-SSOP package and maintain the same I2C/SMBus interface specifications. Verify package dimensions match existing board layouts before substitution.