PCA9534DB

I/o Expanders Overview

The PCA9534DB is an 8-bit I/O expander manufactured by Texas Instruments, designed for remote I/O expansion via the I2C and SMBus serial interfaces. 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 to facilitate efficient data handling. It is housed in a 16-pin SSOP package suitable for surface mount technology. The component functions reliably across an operating temperature range from -40°C to +85°C and includes ESD protection rated at 2 kV.

I/o Expanders Feature Summary

• Provides eight bidirectional digital input/output pins for system expansion
• Supports standard I2C and SMBus communication protocols
• Includes dedicated interrupt output capability for event-driven operations

I/o Expanders Applications

• Remote I/O expansion in embedded systems
• Consumer electronics requiring additional GPIO ports
• Industrial control interfaces utilizing I2C/SMBus buses

I/o Expanders Procurement Notes

Verify the specific suffix 'DB' corresponds to the SSOP-16 package when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor datasheets prior to integration. Ensure the selected variant matches the required thermal and electrical specifications for the target application environment.

I/o Expanders Selection Notes

Select this component when an 8-bit I/O expander with interrupt functionality is required in a compact SSOP package. Verify that the host controller supports I2C or SMBus protocols compatible with the 400 kHz maximum clock speed. Ensure the system power supply remains within the 2.3 V to 5.5 V operational range to guarantee correct device behavior.

I/o Expanders Part Context

This part belongs to the PCA9534 series of low-power I/O expanders. It shares core functional characteristics with other variants such as the PCA9534PWR and PCA9534ADBR, differing primarily in packaging type and specific manufacturing revisions. The DB suffix specifically denotes the SSOP-16 form factor used in this instance.

I/o Expanders Replacement Considerations

The PCA9534ADBR serves as a verified alternative offering identical electrical specifications but utilizes a 16-SSOP package. Cross-reference pinouts and register maps to ensure compatibility during substitution.