74AVC1T45FZ4-7

Overview

The 74AVC1T45FZ4-7 is a single-bit dual power supply translating transceiver with tri-state outputs manufactured by Diodes Incorporated. It operates within a voltage range of 1.2V to 3.6V on both VCCA and VCCB domains. The device features a propagation delay of 2.8 ns, an operating supply current of 20 uA, and utilizes the X2-DFN1410-6 package.

Feature Summary

• Supports universal low-voltage translation between any voltages from 1.2V to 3.6V
• Provides partial-power-down mode operation via IOFF feature for electrical isolation
• Includes high noise immunity with typical 100mV hysteresis

Applications

• Voltage level translation joining logic types operating at different voltages
• Power down signal isolation preventing loading on signal lines
• Portable electronics such as cell phones, tablets, and e-readers

Procurement Notes

Verify the specific FZ4 suffix corresponds to the X2-DFN1410-6 package configuration. Confirm RoHS compliance and halogen-free status requirements against project specifications. Ensure input pins are held at VCCI or GND when unused to maintain proper functionality.

Selection Notes

Select this component for applications requiring bidirectional translation between dissimilar voltage domains up to 3.6V. The integrated direction control pin allows flexible data flow management. Consider the compact X2-DFN1410-6 footprint for space-constrained designs needing robust power-down isolation capabilities.

Part Context

This part belongs to the 74AVC1T45 family of translating transceivers designed for low-voltage digital interfaces. It serves as a direct replacement for chip-scale packaging alternatives in modern portable electronic devices requiring efficient voltage domain bridging.

Replacement Considerations

The datasheet identifies SOT26 (W6), SOT363 (DW), X2-DFN0910-6 (FW3), X1-DFN1010-6 (FW5), and X2-DFN1409-6 (FX4) packages as functional equivalents within the same series.

FAQ

How does the device handle power-down scenarios?

When either VCCA or VCCB drops to zero volts, the IOFF feature activates, placing outputs in a high-impedance state to prevent backflow currents and provide electrical isolation.

What determines the data transmission direction?

The DIR pin controls direction; a high logic level referenced to VCCA makes A an input and B an output, while a low level reverses these roles.