74AVCAH164245ZRDR

Overview

The SN74AVCAH164245 is a 16-bit dual-supply bus transceiver with configurable voltage translation and 3-state outputs. It supports VCCA and VCCB supply voltages ranging from 1.4 V to 3.6 V, enabling bidirectional data transfer between any low-voltage nodes (1.5 V, 1.8 V, 2.5 V, or 3.3 V). The device features DOC circuitry for dynamic output impedance control, active bus-hold inputs, and Ioff support for partial-power-down mode. Operating temperatures range from -40 °C to +85 °C.

Feature Summary

• DOC circuitry dynamically adjusts output impedance to reduce noise without degrading speed
• Active bus-hold circuitry maintains valid logic levels on floating data inputs
• Ioff circuitry prevents damaging backflow current during partial-power-down states
• Control input thresholds are referenced to the VCCA supply rail

Applications

• Asynchronous communication between data buses
• Mixed-voltage-mode data communications
• Universal low-voltage bidirectional translation

Procurement Notes

Verify the specific package variant against the datasheet ordering information. Confirm that the suffix matches the required tape-and-reel configuration and lead finish specifications. Ensure the component status aligns with production requirements before finalizing procurement orders.

Selection Notes

Select this component when interfacing systems operating at different low-voltage levels within the 1.4-V to 3.6-V range. The dual-rail design accommodates flexible power configurations. Verify that the application requires noninverting transmission and benefits from the integrated bus-hold functionality.

Part Context

This device belongs to the Texas Instruments Widebus family of logic ICs. It is designed specifically for high-density applications requiring efficient voltage translation between asynchronous buses. The architecture supports multiple independent octal sections within a single package.

Replacement Considerations

Direct replacements must maintain the 16-bit dual-supply configuration and TVSOP-48 package. Verify compatibility with existing PCB land patterns and ensure equivalent switching characteristics for the target voltage nodes.