74LVC1T45W6-7

Overview

The 74LVC1T45W6-7 is a single-bit, dual-supply translating transceiver with tri-state outputs manufactured by Diodes Incorporated. It facilitates logic level translation between voltage domains ranging from 1.65V to 5.5V. The device features an A pin tracking VCCA and a B pin tracking VCCB, controlled by a DIR input referenced to VCCA. It operates within a temperature range of -40°C to +125°C, utilizes SOT-26 packaging, and exhibits a propagation delay of 7.5 ns.

Feature Summary

• Bidirectional data transmission across different voltage domains
• Direction control via dedicated DIR pin
• IOFF feature for partial-power-down isolation
• Tri-state outputs preventing backflow currents

Applications

• Voltage level translation between logic types
• Power-down signal isolation
• Portable consumer electronics
• Computer peripherals and storage devices

Procurement Notes

Verify the specific W6 suffix corresponds to the SOT-26 package configuration before procurement. Confirm that the -7 suffix indicates tape and reel packaging quantities. Ensure compatibility with the required operating temperature range and supply voltage specifications for the target application environment.

Selection Notes

Select this component when interfacing circuits requiring bidirectional translation between 1.65V and 5.5V rails. The DIR pin allows explicit direction control rather than automatic sensing. Consider the SOT-26 footprint constraints and thermal resistance characteristics during PCB layout design.

Part Context

This part belongs to the 74LVC1T45 family of single-bit translators. It shares functional similarities with other variants in the series but differs in physical packaging. The W6 designation specifically identifies the SOT-26 surface-mount package variant offered by Diodes Incorporated.

Replacement Considerations

Direct package replacements include 74LVC1T45DW-7 (SOT-363) and 74LVC1T45Z6-7 (SOT-563). Verify pinout compatibility and thermal performance differences when substituting these alternative packages.

FAQ

How does the DIR pin determine data flow?

A high logic level on the DIR pin enables transmission from Pin A to Pin B, while a low logic level reverses the direction, allowing transmission from Pin B to Pin A.

What is the function of the IOFF feature?

The IOFF feature places the outputs in a high-impedance state when either power supply is at 0V, preventing backflow currents and providing electrical isolation up to 5.5V.