SN74LVC8T245DWRG4

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVC8T245DWRG4 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, supporting universal low-voltage translation between 1.8V, 2.5V, 3.3V, and 5V nodes. The device features three-state outputs, robust glitch-free power sequencing, and Ioff support for partial-power-down mode. It is housed in a 24-pin SOIC package.

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 enables either supply rail to be powered on or off in any order
• Ioff circuitry supports partial-power-down mode operation by disabling outputs to prevent damaging current backflow
• VCC isolation feature disables all I/O outputs when either VCC input is below 100mV or left floating

Buffers, Drivers, Receivers, Transceivers Applications

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

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify that the ordering suffix 'G4' corresponds to the specific RoHS-compliant variant as documented in the manufacturer's official datasheet. Confirm the package type matches the required PCB footprint. Ensure the component meets the specified operating temperature range of -40°C to 85°C for the intended application environment.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when interfacing systems requiring asynchronous communication between two data buses with different voltage levels. The device is suitable for applications needing bidirectional translation between any combination of 1.65V, 1.8V, 2.5V, 3.3V, and 5V logic levels. Consider its high drive capability and glitch-free sequencing for reliable power-up scenarios.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74LVC8T245 family of 8-bit dual-supply bus transceivers. The 'DWR' designation indicates a 24-pin SOIC package with tape-and-reel packaging. The 'G4' suffix typically denotes a lead-free and RoHS-compliant manufacturing version within Texas Instruments' product line.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LVC8T245DWR

Buffers, Drivers, Receivers, Transceivers FAQ

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

The Ioff feature disables the I/O output circuits when the device is in partial-power-down mode, preventing damaging current backflow through the device.

What happens if one of the supply voltages drops below 100mV?

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