74AVC1T45DRLR

Overview

The SN74AVC1T45DRLR is a single-bit dual-supply bus transceiver utilizing Texas Instruments NanoFree™ packaging. It supports configurable voltage translation between VCCA and VCCB rails ranging from 1.2V to 3.6V. The device provides noninverting bidirectional data transfer controlled by a DIR input referenced to VCCA. It features Ioff circuitry for partial-power-down support, preventing backflow current when powered down. The component operates within a temperature range of -40°C to 85°C.

Feature Summary

• Fully configurable dual-rail design allows independent operation of ports across the full 1.2V to 3.6V power-supply range.
• Ioff circuitry disables outputs to prevent damaging current backflow during partial-power-down applications.
• VCC isolation feature ensures both ports enter a high-impedance state if either supply input is at ground potential.

Applications

• Personal electronic devices
• Industrial systems
• Enterprise infrastructure
• Telecommunications equipment

Procurement Notes

Verify the specific DRL suffix corresponds to the SOT-5X3 package configuration required for your layout. Confirm that the ordering suffix matches the exact revision and tape-and-reel specifications defined in the manufacturer's latest documentation. Ensure compatibility with your system's voltage nodes before finalizing procurement.

Selection Notes

Select this component for applications requiring asynchronous communication between two data buses operating at different low-voltage logic levels. The device is suitable where space constraints necessitate the use of the NanoFree™ package technology. Designers must ensure the DIR input remains active to prevent floating inputs and excessive current consumption.

Part Context

This part belongs to the SN74AVC1T45 family of single-bit dual-supply bus transceivers. The DRL suffix specifically identifies the unit as being housed in the compact SOT-5X3 package format. This series is engineered for universal low-voltage bidirectional translation between standard voltage nodes such as 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V.

Replacement Considerations

SN74AVC1T45DCKR

FAQ

How does the DIR input control data flow?

The direction-control (DIR) input determines the transmission path. A high logic level on DIR activates the B-port outputs, transmitting data from the A bus to the B bus. A low logic level activates the A-port outputs, transmitting data from the B bus to the A bus.

What is the function of the Ioff circuitry?

The Ioff circuitry supports partial-power-down mode operation. It disables the output circuits to prevent damaging current backflow through the device when it is powered down or when one port is unpowered.