SN74LVC8T245PWRE4

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVC8T245PWRE4 is an eight-bit non-inverting bus transceiver with configurable dual power supply rails, enabling bidirectional voltage level translation. It operates with VCCA and VCCB set between 1.65V and 5.5V. The device supports asynchronous communication between two data buses using direction-control (DIR) and output-enable (OE) inputs to activate either the B-port or A-port outputs, or place both into high-impedance mode. It features robust glitch-free power supply sequencing and Ioff support for partial-power-down applications.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Fully configurable dual-rail design allows each port to operate over the full 1.65V to 5.5V power-supply range
• Robust, glitch-free power supply sequencing ensures reliable operation during power transitions
• Control input VIH/VIL levels are referenced to VCCA voltage
• Ioff supports partial-power-down mode operation by disabling outputs to prevent backflow current

Buffers, Drivers, Receivers, Transceivers Applications

• Personal electronics: sound bar, flat-panel monitor
• Industrial: PLC controller, CNC controller, ultrasound scanner
• Enterprise: high-performance computing, network attached storage
• Telecom: data center switch, baseband unit

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package type and tape-and-reel configuration against the datasheet requirements. Confirm that the ordering suffix matches the intended packaging format. Ensure compatibility with the target system's voltage levels and interface standards before finalizing procurement decisions.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when interfacing systems operating at different interface voltages. Ensure the application requires bidirectional translation between any combination of 1.8V, 2.5V, 3.3V, and 5V nodes. Verify that the control inputs can be supplied by VCCA and that the device meets the required thermal and electrical specifications for the operating environment.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74LVC8T245 series of 8-bit dual-supply bus transceivers. It is designed for universal low-voltage bidirectional translation. The PWRE4 suffix indicates a TSSOP-24 package with reel packaging. It is manufactured by Texas Instruments and falls under the LVC logic family.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct replacements include SN74LVC8T245PWR and SN74LVC8T245PW. Verify pinout and electrical characteristics match the original design requirements before substitution.

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle partial-power-down scenarios?

The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.

What happens if one of the VCC inputs is below 100mV?

If either VCC input is below 100mV or left floating, all I/O outputs are disabled and become high-impedance state.