74AVCH1T45FW3-7

Overview

The 74AVCH1T45FW3-7 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 domains. The device features bus hold functionality at each input, maintaining previous logic levels without external resistors. It utilizes an X2-DFN0910-6 package and supports bidirectional data transmission controlled by a DIR pin referenced to VCCA.

Feature Summary

• Includes bus hold feature at inputs to maintain valid logic levels for unused or disconnected pins
• Supports partial-power-down mode operation via IOFF feature when either power supply is zero
• Provides universal low-voltage translation between any voltages from 1.2V to 3.6V
• Features high noise immunity with typical hysteresis

Applications

• Voltage level translation between logic types operating at different voltages
• Power down signal isolation to prevent loading on signal lines when a domain is off
• Portable electronics such as cell phones, tablets, and e-readers
• Computing devices including PCs, notebooks, and netbooks
• Networking equipment like routers and gateways

Procurement Notes

Verify the specific FW3 suffix corresponds to the X2-DFN0910-6 package configuration before integration. Confirm that the required tape and reel packaging quantity aligns with production needs. Ensure design compatibility with the specified operating temperature range and electrical characteristics defined in the official datasheet.

Selection Notes

Select this component for applications requiring a single channel of bidirectional voltage translation with direction control. The integrated bus hold eliminates the need for external pull-up or pull-down resistors on floating inputs. Verify that the system voltage domains fall within the 1.2V to 3.6V range supported by both VCCA and VCCB supplies.

Part Context

This part belongs to the 74AVCH series of logic translators from Diodes Incorporated. It is a variant of the standard 74AVC1T45, distinguished by the addition of bus hold circuitry at the input pins. The FW3 ordering suffix specifically identifies the X2-DFN0910-6 chip-scale package format.

Replacement Considerations

The 74AVC1T45 serves as a functional base model but lacks the bus hold feature found in the AVCH variant. Other packages within the same family, such as DW (SOT363) or FZ4 (X2-DFN1410-6), offer identical electrical performance with different physical footprints.