SN74AVC4T245D

Buffers, Drivers, Receivers, Transceivers Overview

The SN74AVC4T245D is a 4-bit dual-supply noninverting bus transceiver with configurable voltage translation and 3-state outputs. It supports asynchronous communication between two data buses using separate VCCA and VCCB rails, each accepting voltages from 1.2V to 3.6V. The device enables bidirectional level shifting between nodes such as 1.2V, 1.8V, 2.5V, and 3.3V. It features I/Os that are 4.6V tolerant and includes an Ioff circuit for partial power-down mode operation to prevent backflow current. The D package variant utilizes a 16-pin SOIC form factor.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Fully configurable dual-rail design allows independent port operation across the full 1.2V to 3.6V supply range
• I/O pins provide 4.6V tolerance for interfacing with higher voltage systems
• Integrated Ioff circuitry disables outputs during partial power-down to prevent damaging current backflow
• Control input logic levels are referenced directly to the VCCA supply voltage

Buffers, Drivers, Receivers, Transceivers Applications

• Personal electronics
• Industrial automation
• Enterprise systems
• Telecommunications equipment

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'D' corresponds to the 16-pin Small Outline Integrated Circuit (SOIC) package when sourcing. Confirm that the required data rate does not exceed the specified limits for the target voltage translation scenario, particularly noting reduced rates for translations below 1.8V or to lower voltage nodes. Ensure the application design accounts for the OE pin pull-up requirements during power sequencing to maintain high-impedance states correctly.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when bidirectional level translation is required between disparate low-voltage logic families operating within the 1.2V to 3.6V range. The device is suitable for applications requiring 4.6V tolerant inputs on the receiving end. Consider the SOIC package dimensions if board space permits larger footprints compared to QFN or UQFN alternatives. Verify that the control signals are compatible with the VCCA reference levels before implementation.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the SN74AVC4T245 family of bus transceivers manufactured by Texas Instruments. The family shares identical electrical characteristics and functional descriptions but differs in physical packaging options. Other variants include DGV (TVSOP), PW (TSSOP), RGY (WQFN), and RSV (UQFN). The 'D' suffix specifically identifies the standard 16-pin SOIC package configuration within this product line.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74AVC4T245PW

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle power-down conditions?

The integrated Ioff circuit disables the output circuits when the device is in partial-power-down mode, preventing damaging current backflow through the device.

What is the maximum data rate supported?

The maximum data rate is 380Mbps when translating signals from 1.8V to 3.3V. Lower data rates apply for other voltage combinations, such as 200Mbps for translations below 1.8V to 3.3V.