SN74AVC4T245RGYR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74AVC4T245RGYR is a 4-bit dual-supply noninverting bus transceiver in a 16-pin WQFN package. It supports configurable voltage translation between any nodes from 1.2V to 3.6V, including 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V. The device achieves maximum data rates of 380Mbps for 1.8V to 3.3V translation. I/Os are 4.6V tolerant, and the part includes Ioff circuitry for partial power-down mode. Operating temperature range is -40°C to +85°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Configurable dual-rail design allows independent A and B port operation across the full 1.2V to 3.6V supply range.
• Ioff feature disables outputs to prevent damaging backflow current during partial power-down conditions.
• I/O ports provide 4.6V tolerance, enabling safe interfacing with higher voltage systems.

Buffers, Drivers, Receivers, Transceivers Applications

• Personal electronics
• Industrial systems
• Enterprise equipment
• Telecom infrastructure

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify that the specific RGY suffix corresponds to the 16-pin WQFN (4mm x 3.5mm) package variant. Confirm RoHS compliance status and moisture sensitivity level requirements against the project specifications. Ensure ESD handling protocols are followed during assembly due to the component's sensitivity characteristics.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when bidirectional translation is required between mixed-voltage buses within the 1.2V to 3.6V domain. The dual-supply architecture simplifies interface design by allowing separate power rails for source and destination logic levels without complex external biasing networks.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the Texas Instruments SN74AVC4T245 family of low-voltage bus transceivers. The RG Y suffix specifically denotes the WQFN package configuration. Other variants in the series utilize different footprints such as SOIC, TSSOP, or UQFN, while maintaining identical electrical functionality and pinout assignments.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74AVC4T245RGYRG4 is a confirmed lead-free substitute within the same package type.

Buffers, Drivers, Receivers, Transceivers FAQ

How does the OE pin function during power-up?

To ensure high-impedance state during power-up, the OE input must be tied to VCCA through a pullup resistor until both VCCA and VCCB are stable.

What is the purpose of the DIR input?

The DIR input controls data direction; a high state enables transmission from A to B, while a low state enables transmission from B to A.