74AVCH1T45GM-Q100H

Overview

The 74AVCH1T45GM-Q100H is a single-bit, dual-supply transceiver designed for bidirectional voltage level translation. It features two 1-bit input-output ports (A and B), a direction control input (DIR), and dual supply pins VCC(A) and VCC(B). Both supplies support voltages from 0.8 V to 3.6 V, enabling translation between low-voltage nodes including 0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, and 3.3 V. The device operates within an ambient temperature range of -40 °C to +125 °C and is qualified to AEC-Q100 Grade 1 standards.

Feature Summary

• Supports bidirectional data transmission with a dedicated direction control input.
• Includes IOFF circuitry to disable outputs during partial power-down, preventing backflow current.
• Features active bus hold circuitry to maintain valid logic levels on floating or unused inputs without external resistors.
• Provides high noise immunity and ESD protection exceeding 8000 V under HBM conditions.

Applications

• Bidirectional logic level-shifting between different voltage domains
• Unidirectional logic level-shifting applications
• Automotive electronic systems requiring AEC-Q100 qualification

Procurement Notes

Verify the package designation matches the specific suffix requirements for your assembly process. Confirm that the ordering code corresponds to the correct temperature grade and automotive qualification status. Ensure compatibility with the target PCB footprint dimensions for the SC-88 package before finalizing procurement orders.

Selection Notes

Select this component when interfacing systems operating at varying low-voltage levels between 0.8 V and 3.6 V. It is suitable for designs requiring controlled bidirectional data flow with minimal external components due to integrated bus hold functionality. Consider the propagation delay characteristics relative to system timing requirements.

Part Context

This device belongs to the Nexperia 74AVCH series of automotive-grade level translators. It is specifically engineered for robust performance in harsh environments, meeting stringent automotive reliability standards. The single-bit architecture simplifies integration into compact designs where space efficiency and precise voltage translation are critical.

Replacement Considerations

The datasheet lists the 74AVCH1T45GW-Q100 as a variant within the same family. Verify pinout and electrical specifications match before substitution.