SN74AVCAH164245KR

Translators, Level Shifters Overview

The SN74AVCAH164245KR is a 16-bit dual-supply bus transceiver with configurable voltage translation and 3-state outputs, manufactured by Texas Instruments. It operates within a supply voltage range of 1.4 V to 3.6 V for both ports A and B. The device supports asynchronous communication between data buses, transmitting data bidirectionally based on the DIR input level. It features DOC circuitry that dynamically adjusts output impedance to reduce noise without degrading speed. The component includes active bus-hold circuitry on data inputs and overvoltage-tolerant I/Os for mixed-voltage applications.

Translators, Level Shifters Feature Summary

• DOC circuitry dynamically changes output impedance to reduce noise without speed degradation
• Active bus-hold circuitry eliminates the need for external pullup or pulldown resistors
• Fully configurable dual-rail design allows each port to operate over the full 1.4-V to 3.6-V power-supply range
• Supports partial-power-down mode operation via Ioff circuitry

Translators, Level Shifters Applications

• Asynchronous communication between data buses
• Mixed-voltage-mode data communications
• Universal low-voltage bidirectional translation between 1.5-V, 1.8-V, 2.5-V, and 3.3-V voltage nodes

Translators, Level Shifters Procurement Notes

Verify the specific package marking WAH4245 corresponds to the KR suffix (VFBGA-GQL) when sourcing. Confirm RoHS compliance status and lead finish details against the latest TI Package Option Addendum. Ensure the ordering part number matches the required tape and reel specifications for automated assembly processes.

Translators, Level Shifters Selection Notes

Select this component for designs requiring flexible voltage translation across multiple logic levels. The dual-supply architecture accommodates varying voltage requirements for Port A and Port B independently. Consider the DOC feature for high-speed signals where signal integrity and noise reduction are critical constraints in the system design.

Translators, Level Shifters Part Context

This device belongs to the Texas Instruments Widebus family of bus transceivers. It provides a noninverting 16-bit configuration designed for robust data transmission. The product line emphasizes configurable power rails and dynamic drive capabilities to support diverse interface requirements in modern electronic systems.

Translators, Level Shifters Replacement Considerations

SN74AVCAH164245VR (TVSOP-48)

Translators, Level Shifters FAQ

How does the DOC circuitry function?

The DOC circuitry dynamically changes the output impedance during signal transitions. It initially lowers impedance to effectively drive the load and subsequently raises it to reduce noise.

What is the purpose of the bus-hold circuitry?

The active bus-hold circuitry holds unused or floating data inputs at a valid logic level, eliminating the need for external pullup or pulldown resistors.