TCA6408AQPWRQ1

Overview

The TCA6408AQPWRQ1 is a low-voltage 8-bit I2C and SMBus I/O expander designed for automotive applications. It operates within a supply voltage range of 1.65V to 3.6V and supports clock frequencies up to 400 kHz. The device features push-pull outputs capable of sourcing or sinking 10mA, with specific configurations allowing for 25mA drive capabilities. It includes an interrupt output pin, power-on reset (POR) functionality, and configuration registers. Packaged in a 16-TSSOP format, it is qualified under AEC-Q100 standards and functions reliably across a temperature range of -40°C to +125°C.

Feature Summary

• Automotive-grade qualification compliant with AEC-Q100 standards for extended reliability
• Integrated interrupt output mechanism for efficient host processor notification
• Configurable input/output direction control via dedicated configuration registers
• Power-on reset circuit ensures defined initial states upon power-up

Applications

• Infotainment system peripheral expansion
• Body control module interface management
• Instrument cluster display driver interfacing

Procurement Notes

Verify the complete part number including suffixes against official Texas Instruments documentation to ensure correct package type and automotive qualification status. Confirm RoHS compliance and REACH status requirements prior to integration into production designs.

Selection Notes

Select this component when an 8-bit I/O expansion solution is required for automotive environments operating below 3.6V. Ensure the design accommodates the 16-TSSOP footprint and utilizes I2C/SMBus compatible controllers. Validate that the required output current aligns with the specified 10mA or 25mA limits depending on the specific pin configuration.

Part Context

This device belongs to the TCA6408 family of low-voltage I/O expanders. The 'QPWRQ1' suffix indicates automotive qualification, a 16-pin TSSOP package, and tape-and-reel packaging. It serves as a specialized variant of the standard TCA6408A, tailored for harsh automotive electrical environments.

Replacement Considerations

TCA6408APWR is the non-automotive commercial grade equivalent. TCA9539QPWRQ1 offers 16 bits but differs in package size and pinout. Verify register compatibility and physical dimensions before substitution.