SN74LVC8T245DWR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVC8T245DWR is an eight-bit non-inverting bus transceiver with configurable dual power supply rails, enabling bidirectional voltage level translation. It operates over a full 1.65V to 5.5V range for both VCCA and VCCB ports. The device supports asynchronous communication between two data buses using DIR and OE control inputs. It features robust glitch-free power sequencing, Ioff partial-power-down support, and VCC isolation. The component is housed in a 24-pin SOIC package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• 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 backflow current
• 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 that the specific ordering suffix matches the required package type, as the SN74LVC8T245 family includes various packages such as SSOP, TSSOP, TVSOP, and VQFN. Confirm that the DWR designation corresponds to the 24-SOIC variant. Ensure compatibility with system voltage requirements across the 1.65V to 5.5V range before finalizing procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when interfacing devices operating at different interface voltages within the 1.65V to 5.5V spectrum. It is suitable for applications requiring bidirectional translation without inversion. Consider the 24-SOIC package dimensions and thermal characteristics for PCB layout. Ensure unused I/Os are tied to GND to minimize power consumption and avoid floating inputs.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74LVC8T245 series of 8-bit dual-supply bus transceivers. The 'DWR' suffix specifically denotes the 24-pin Small Outline Integrated Circuit (SOIC) package with tape-and-reel packaging. It shares core electrical specifications with other package variants like DBR and PWR but differs in physical footprint and thermal properties.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LVC8T245DBR

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle power supply sequencing?

The SN74LVC8T245DWR features glitch-free power supply sequencing, allowing either supply rail to be powered on or off in any order without producing glitches on the I/Os.

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

If either VCCA or VCCB is below 100mV or left floating, the VCC isolation feature disables all I/O outputs, placing them in a high-impedance state.