TCA4311ADGKR

Overview

The TCA4311ADGKR is a single-channel I2C hot-swap buffer manufactured by Texas Instruments. It operates within a supply voltage range of 2.7V to 5.5V and draws a typical supply current of 5.1mA. The device supports input and output configurations for two-wire bus interfaces, specifically designed for I2C applications involving hot-swapping scenarios. It is housed in an 8-VSSOP package with dimensions of 0.118 inches (3.00mm) width. The component functions as a signal buffer and accelerator, ensuring reliable data transmission during bus insertion or removal events.

Feature Summary

• Provides dedicated buffering and acceleration capabilities for I2C hot-swap operations
• Supports bidirectional data transfer on two-wire bus interfaces
• Operates across a wide industrial temperature range from -40°C to 85°C

Applications

• I2C bus hot-swap protection and signal conditioning
• Buffering signals in systems requiring frequent module insertion or removal
• Accelerating I2C communication lines to maintain signal integrity

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and tape/reel specifications. Ensure the component meets RoHS3 compliance requirements if mandated by your project standards. Cross-reference the DigiKey part number 296-28328-2-ND for accurate packaging details such as cut tape versus reel quantities. Confirm the standard lead time of 16 weeks aligns with your production schedule before finalizing procurement orders.

Selection Notes

Select this component when designing circuits that require robust I2C hot-swap functionality with a single channel. The 8-VSSOP package is suitable for space-constrained surface-mount designs. Verify that the operating voltage range of 2.7V to 5.5V matches your system's power rails. Consider the 5.1mA supply current impact on overall power budget compared to alternative buffers with lower quiescent currents.

Part Context

This part belongs to the TCA4311 family of I2C hot-swap buffers. It serves as a specialized interface solution for maintaining bus stability during dynamic connection changes. The DGKR suffix indicates the specific VSSOP-8 packaging variant. It complements other Texas Instruments interface components by addressing specific hot-swap signal integrity challenges in I2C networks.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult manufacturer cross-reference tools for potential alternatives.