SN74LXC8T245QPWRQ1

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LXC8T245QPWRQ1 is an automotive-grade, 8-bit dual-supply noninverting bidirectional voltage level translation device manufactured by Texas Instruments. It facilitates asynchronous data communication between devices operating at different voltage nodes. The component supports configurable voltage conversion with independent power rails for A and B ports, ranging from 0.65V to 3.6V. It features three-state outputs and includes Ioff partial-power-down protection to prevent current backflow. The device operates within a temperature range of -40°C to +125°C and is housed in a TSSOP-24 package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Supports bidirectional voltage level translation between independent dual power supplies
• Includes Ioff circuitry for partial power-down protection against backflow current
• Features VCC isolation to disable outputs if either supply voltage drops below 100mV
• Provides high electrostatic discharge (ESD) protection performance

Buffers, Drivers, Receivers, Transceivers Applications

• Automotive electronic systems requiring voltage node matching
• Interfacing low-voltage logic with higher-voltage peripherals
• Bidirectional data buses in industrial control environments
• Voltage translation in mixed-signal circuit designs

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix Q1 indicates automotive qualification status. Confirm the TSSOP-24 package dimensions match your PCB footprint requirements. Ensure the design accounts for the specified operating temperature range of -40°C to +125°C. Check that the voltage levels on both VCCA and VCCB rails remain within the 0.65V to 3.6V limits during all operational states.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when interfacing circuits with disparate voltage domains in automotive applications. It is suitable for designs requiring robust voltage translation with built-in protection against power loss scenarios. Consider its bidirectional capability for shared bus architectures. Verify compatibility with existing control logic signals referenced to VCCA.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74LXC8T245-Q1 family of automotive voltage translators. It shares functional similarities with other dual-supply transceivers but is optimized for wide voltage ranges. The Q1 designation signifies compliance with automotive reliability standards. It serves as a bridge for communication between microcontrollers and sensors operating at different potential levels.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

• SN74AXC8T245PWR
• SN74LVC8T245PWRE4

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle partial power-down conditions?

The SN74LXC8T245QPWRQ1 incorporates Ioff circuitry that automatically disables the outputs when the device is powered down, preventing current from flowing back through the pins and potentially damaging connected components.

What is the function of the VCC isolation feature?

VCC isolation ensures that if the voltage on either VCCA or VCCB falls below 100mV, all level shifter outputs are disabled and enter a high-impedance state, effectively isolating the two buses from each other.