PCA9534APW

I/o Expanders Overview

The PCA9534APW is a remote 8-bit I2C and 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 a maximum clock frequency of 400 kHz. The device features configuration registers and an interrupt pin, housed in a TSSOP-16 package. It functions across a temperature range of -40°C to +85°C and includes 2 kV ESD protection. This component serves as an interface IC for expanding input and output capabilities via serial communication protocols.

I/o Expanders Feature Summary

• Provides eight bidirectional digital I/O lines accessible via the I2C bus or SMBus protocol.
• Includes dedicated configuration registers to define individual pin directions for input or output operations.
• Features an interrupt output pin that signals state changes on inputs or matches between input and configuration registers.

I/o Expanders Applications

• Remote I/O expansion in embedded systems requiring additional GPIO pins over a serial bus.
• Low-power consumer electronics utilizing I2C connectivity for peripheral management.
• Industrial control interfaces needing isolated input monitoring with interrupt-driven notifications.

I/o Expanders Procurement Notes

Verify the specific suffix 'PW' corresponds to the TSSOP-16 tube packaging variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Check current lifecycle status as distribution channels may list this part as obsolete or end-of-life depending on regional availability and manufacturing updates.

I/o Expanders Selection Notes

Select this component when an 8-bit I/O expander with interrupt capability is required in a TSSOP-16 form factor. Ensure the system voltage aligns with the 2.3 V to 5.5 V operating range. Consider the 400 kHz speed limit for bus timing requirements. Verify that the TSSOP-16 footprint matches the PCB layout constraints compared to SSOP or SOIC alternatives.

I/o Expanders Part Context

The PCA9534A series represents a family of low-power I/O expanders designed for I2C and SMBus applications. The PCA9534APW specifically denotes the Texas Instruments version in a TSSOP-16 package. It shares functional similarities with other members like the PCA9534DB but differs in physical packaging. The series is engineered for cost-effective peripheral expansion in space-constrained designs.

I/o Expanders Replacement Considerations

Public confirmed substitute part numbers include PCA9534ADBR and PCA9534APWR. Verify pin compatibility and package dimensions before substitution. The PCA9534ADBR utilizes an SSOP-16 package, while PCA9534APWR uses TSSOP-16 reel packaging. Functional equivalence exists within the PCA9534A family.