TCA6416PWR

Overview

The TCA6416PWR is a 16-bit I/O expander designed for I2C and SMBus interfaces, manufactured by Texas Instruments. It operates within a supply voltage range of 1.65V to 5.5V and supports clock frequencies up to 400 kHz. The device features push-pull outputs capable of sourcing or sinking 10mA or 25mA depending on the specific configuration. It includes an interrupt output pin and power-on reset (POR) functionality. Packaged in a 24-TSSOP surface-mount case with a width of 4.40mm, it functions reliably across a temperature range of -40°C to +85°C.

Feature Summary

• Supports bidirectional data transfer via standard I2C and SMBus protocols
• Provides remote setting capability for input and output states through dedicated registers
• Includes configurable interrupt output to signal state changes to the host processor

Applications

• Portable devices requiring extended I/O capabilities
• Industrial control systems utilizing I2C communication
• Consumer electronics with low-power interface requirements

Procurement Notes

Verify component authenticity against official Texas Instruments documentation before integration. Confirm that the 24-TSSOP package dimensions align with your PCB footprint design. Ensure voltage levels match the 1.65V to 5.5V operating range. Check for RoHS3 compliance status if required by your manufacturing standards. Validate that the 400 kHz clock speed meets your system timing constraints.

Selection Notes

Select this component when a 16-bit expansion is necessary for I2C-based architectures. Consider the push-pull output drive strength for direct load driving needs. Evaluate the wide supply voltage range for compatibility with various logic levels. Assess the interrupt feature necessity for efficient event handling. Compare thermal performance within the specified industrial temperature range.

Part Context

This part belongs to the TCA6416 family of I/O expanders from Texas Instruments. It serves as a digital interface solution for systems needing additional general-purpose inputs and outputs. The PWR suffix indicates the specific 24-TSSOP packaging variant. It complements other Texas Instruments interface ICs in complex embedded designs.

Replacement Considerations

The PCAL6416APW from NXP USA Inc. is listed as a direct substitute. Verify register compatibility and electrical characteristics before swapping. Ensure the alternative package matches the existing board layout constraints.