SN74LVC8T245DBR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVC8T245DBR is an 8-bit non-inverting bus transceiver with configurable dual power supply rails and 3-state outputs. It operates within a voltage range of 1.65V to 5.5V on both VCCA and VCCB ports. The device supports bidirectional data transmission controlled by DIR and OE inputs, enabling asynchronous communication between buses. It features robust glitch-free power sequencing and Ioff for partial-power-down modes. The component is housed in a 24-pin SSOP 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 ensures reliable operation during power transitions
• Ioff circuitry supports partial-power-down mode by disabling outputs to prevent damaging current backflow
• VCC isolation feature disables all I/O outputs when either supply input falls below 100mV or remains floating

Buffers, Drivers, Receivers, Transceivers Applications

• Personal electronics such as sound bars and flat-panel monitors
• Industrial applications including PLC controllers, CNC controllers, and ultrasound scanners
• Enterprise computing and network-attached storage systems
• Telecom infrastructure like data center switches and baseband units

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'DBR' corresponds to the SSOP-24 package type and tape-and-reel packaging configuration. Confirm that the intended operating environment aligns with the specified -40°C to 85°C temperature range. Ensure system designs account for the recommended bypass capacitor placement and trace length guidelines to maintain signal integrity and device reliability.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when interfacing systems requiring bidirectional translation between any combination of 1.8V, 2.5V, 3.3V, and 5V logic levels. The device is suitable for applications demanding high drive capability with up to 32mA output current at 5V. Consider its compatibility with LVC logic families and ensure control inputs are referenced correctly to VCCA for proper direction and enable functionality.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74LVC8T245 series of 8-bit dual-supply bus transceivers manufactured by Texas Instruments. The series provides universal low-voltage bidirectional translation capabilities across multiple standard voltage nodes. The DBR suffix specifically denotes the SSOP-24 surface-mount package variant designed for compact electronic assemblies.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LVC8T245PWR (TSSOP-24 package)

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle power supply sequencing?

The SN74LVC8T245 features glitch-free power supply sequencing, allowing either VCCA or VCCB rail to be powered on or off in any order without producing glitches on the I/Os.

What is the function of the Ioff feature?

The Ioff feature supports partial-power-down mode operation by disabling the I/O output circuits when the device is powered down, thereby preventing damaging current backflow through the device.