74AVCH1T45FW5-7

Overview

The 74AVCH1T45FW5-7 is a single-bit dual power supply translating transceiver with 3-state outputs manufactured by Diodes Incorporated. It operates within a voltage range of 1.2V to 3.6V on both VCCA and VCCB rails. The device features bus hold functionality at each input, ensuring valid logic levels for unused or disconnected pins without external resistors. It utilizes an X1-DFN1010-6 package and supports partial-power-down mode via IOFF control when either supply voltage reaches 0V.

Feature Summary

• Dual supply voltage translation between any voltages from 1.2V to 3.6V
• Bus hold feature maintains previous logic level on inputs
• IOFF support enables partial-power-down mode operation
• High noise immunity with typical 100mV hysteresis

Applications

• Voltage level translation between different logic types
• Power down signal isolation in mixed-voltage systems
• Portable electronics such as cell phones and tablets
• Computer peripherals including hard drives and routers

Procurement Notes

Verify the specific FW5 suffix corresponds to the X1-DFN1010-6 package configuration before procurement. Confirm that the ordering suffix matches the required tape and reel packaging quantity of 5,000 units. Ensure compatibility with the intended PCB footprint dimensions for the X1-DFN1010-6 package type.

Selection Notes

Select this component for applications requiring bidirectional translation between low-voltage domains ranging from 1.2V to 3.6V. The integrated bus hold feature simplifies design by eliminating the need for external pull-up or pull-down resistors on floating inputs. Consider the X1-DFN1010-6 package size constraints when choosing this variant over other available packages like SOT363 or X2-DFN1410-6.

Part Context

This part belongs to the 74AVCH series of logic devices designed for low-voltage applications. It is a variant of the standard 74AVC1T45 transceiver, distinguished by the inclusion of bus hold circuitry at the input pins. The AVCH family provides universal low-voltage translation capabilities suitable for modern portable electronic devices requiring efficient power management and signal integrity across different voltage domains.

Replacement Considerations

Direct package replacements include 74AVCH1T45DW-7 (SOT363), 74AVCH1T45FZ4-7 (X2-DFN1410-6), and 74AVCH1T45FX4-7 (X2-DFN1409-7). Verify pinout compatibility and thermal resistance differences when substituting with these alternative packages.