SN74LVC8T245RHLR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVC8T245RHLR 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 5.5V nodes. The device features glitch-free power supply sequencing, VCC isolation, and Ioff for partial-power-down mode. Control inputs DIR and OE are referenced to VCCA. It is housed in a 24-pin VQFN package (5.5mm x 3.5mm) and supports an operating temperature range from -40°C to +85°C.

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
• VCC isolation feature disables all I/O outputs when either supply drops below 100mV or floats
• Ioff circuitry supports partial-power-down mode by disabling outputs to prevent backflow current

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 RHL corresponds to the 24-pin VQFN package configuration required for your PCB layout. Confirm that the component meets RoHS compliance standards for your manufacturing process. Ensure that the ESD protection ratings align with your facility's electrostatic discharge control protocols. Validate thermal performance metrics against your system's heat dissipation capabilities 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 range. It is suitable for asynchronous communication between two data buses requiring bidirectional translation. Consider its high-drive CMOS push-pull outputs for driving larger currents. Ensure unused I/Os are tied to GND to minimize power consumption and prevent floating input issues.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the SN74LVC8T245 family of 8-bit dual-supply bus transceivers. It shares functional characteristics with other members of the LVC series but is distinguished by its specific VQFN packaging and optimized voltage translation capabilities. The family is designed to address voltage level mismatches between modern low-voltage devices and standard industrial voltage nodes.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LVC8T245DB

Buffers, Drivers, Receivers, Transceivers FAQ

How does the VCC isolation feature function?

If either VCC input is below 100mV or left floating while the complementary supply is connected, all I/O outputs are disabled and enter a high-impedance state.

What is the purpose of the Ioff feature?

Ioff supports partial-power-down mode operation by disabling the outputs, which prevents damaging current backflow through the device when it is powered down.