SN74AVC4T245PWTE4

Buffers, Drivers, Receivers, Transceivers Overview

The SN74AVC4T245PWTE4 is a 4-bit dual-supply noninverting bus transceiver with configurable voltage-level shifting and 3-state outputs. It utilizes two separate power rails, VCCA and VCCB, each accepting voltages from 1.2V to 3.6V. The device supports asynchronous communication between data buses with maximum data rates up to 380Mbps for 1.8V to 3.3V translation. I/Os are 4.6V tolerant, and the Ioff circuit enables partial power-down mode. Control inputs reference VCCA.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Fully configurable dual-rail design allows independent operation of ports across the full 1.2V to 3.6V supply range
• I/O pins tolerate input voltages up to 4.6V regardless of the active supply rail
• Integrated Ioff circuitry disables outputs to prevent backflow current during partial power-down states
• Direction control and output enable inputs manage bidirectional data flow or high-impedance isolation

Buffers, Drivers, Receivers, Transceivers Applications

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

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package variant matches the required PCB footprint, as the PW suffix indicates TSSOP-16. Confirm that the E4 suffix aligns with environmental compliance requirements such as lead-free status. Ensure the ordering information corresponds to the exact Texas Instruments part number to avoid functional discrepancies in voltage translation capabilities.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when interfacing logic families operating at different low-voltage nodes within the 1.2V to 3.6V spectrum. The dual-supply architecture accommodates varying voltage levels on A and B ports simultaneously. Verify that the system requires 3-state outputs and that the direction control logic aligns with the VCCA reference level for proper switching behavior.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the SN74AVC4T245 family of voltage translators manufactured by Texas Instruments. The family provides bidirectional level-shifting solutions for asynchronous bus communication. The PWTE4 designation specifies the TSSOP-16 package type and associated manufacturing revisions.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74AVC4T245PWR

Buffers, Drivers, Receivers, Transceivers FAQ

How does the OE pin behave during power-up?

To ensure outputs remain in a high-impedance state during power-up or power-down, the OE pin must be tied to VCCA through a pullup resistor.

What determines the reference voltage for control inputs?

The control inputs (DIR and OE) are referenced to the VCCA supply voltage.