TCA6408ARSVR

Overview

The TCA6408ARSVR is an I/O expander manufactured by Texas Instruments, designed for low-voltage applications. It features eight general-purpose digital input/output pins with push-pull output capability. The device supports I2C and SMBus interfaces with a maximum clock frequency of 400 kHz. It operates within a supply voltage range of 1.65V to 5.5V and functions across a temperature range of -40°C to +85°C. Packaged in a 16-UQFN (2.6x1.8mm) surface-mount case, it includes an interrupt output feature and power-on reset (POR) functionality.

Feature Summary

• Supports I2C and SMBus communication protocols for system integration
• Provides eight configurable digital I/O lines with push-pull outputs
• Includes interrupt output capability for efficient event handling
• Integrates power-on reset (POR) circuitry for reliable initialization

Applications

• Portable consumer electronics requiring GPIO expansion
• Industrial control systems utilizing I2C/SMBus networks
• Embedded devices needing additional digital input/output channels

Procurement Notes

Verify the specific ordering suffix against official Texas Instruments documentation to ensure correct package type and tape/reel specifications. Confirm RoHS compliance status and manufacturing origin details through authorized distributors or direct manufacturer channels prior to procurement.

Selection Notes

Select this component when eight digital I/O lines are required within a compact 16-pin footprint. Ensure the host controller supports I2C or SMBus at speeds up to 400 kHz. Verify that the system voltage falls within the 1.65V to 5.5V operating range and that thermal conditions remain between -40°C and +85°C.

Part Context

This part belongs to the TCA6408 family of I/O expanders from Texas Instruments. It shares core architectural similarities with other members like the TCA6408A, differing primarily in specific suffix designations related to packaging or revision. It serves as a standard solution for expanding microcontroller I/O capabilities via serial interfaces.

Replacement Considerations

Consult official cross-reference data for verified substitutes. Generic equivalents may differ in electrical characteristics or pin compatibility. Validate any alternative against the original datasheet specifications before implementation.