SN74LXC8T245RHLR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LXC8T245RHLR is an 8-bit dual-supply noninverting bidirectional voltage level translation device with configurable level shifting and 3-state outputs. It operates with VCCA and VCCB supply voltages ranging from 1.08 V to 5.5 V. The A port accepts I/O voltages from 1.1 V to 5.5 V, while the B port also supports 1.1 V to 5.5 V. Control inputs DIR and OE are referenced to VCCA. The device provides high drive strength up to 32 mA at 5 V and supports data rates up to 420 Mbps for 3.3 V to 5.0 V translations. It features Schmitt-trigger inputs, integrated dynamic pull-down resistors on I/Os, and static pull-down resistors on control inputs.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Fully configurable dual-rail design allows each port to operate from 1.1 V to 5.5 V
• Robust, glitch-free power supply sequencing ensures reliable operation during power transitions
• Schmitt-trigger inputs effectively eliminate slow or noisy input signals
• I/Os include integrated dynamic pull-down resistors to reduce external component count

Buffers, Drivers, Receivers, Transceivers Applications

• Eliminate slow or noisy input signals
• Driving indicator LEDs or buzzers
• Debouncing a mechanical switch
• General purpose I/O level shifting
• Push-pull level shifting for UART, SPI, and JTAG interfaces

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package variant (RHL) matches the required footprint dimensions of 5.50 mm x 3.50 mm. Confirm that the operating temperature range of –40°C to +125°C aligns with the system environment. Ensure that the VCCA and VCCB supply rails are within the specified 1.08 V to 5.5 V limits to maintain electrical characteristics. Check for compatibility with existing PCB layout guidelines regarding thermal dissipation and signal integrity.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when interfacing between logic families requiring different voltage levels within the 1.1 V to 5.5 V range. The dual-supply architecture allows independent voltage domains for A and B ports. Consider the high drive strength if driving capacitive loads or multiple inputs. The integrated pull-down resistors simplify circuit design by preventing floating states without additional external components.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the SN74LXC8T245 family of 8-bit bus transceivers. It is designed for applications requiring asynchronous communication between buses operating at different voltage nodes. The RHL suffix indicates a 24-pin VQFN package. It is compatible with LVC family level shifters and supports partial-power-down modes via Ioff features.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LXC8T245PW

Buffers, Drivers, Receivers, Transceivers FAQ

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

The device supports partial-power-down mode operation through Ioff features. If either VCC supply is disconnected or below 100 mV, all I/Os are pulled down and become high-impedance to prevent current backflow.

What is the function of the DIR and OE pins?

The DIR pin controls the direction of data transmission; a high level allows A to B transmission, while a low level allows B to A transmission. The OE pin enables or disables the outputs; pulling it low enables outputs, while pulling it high places them in a high-impedance state.