74AVC2T45GD-Q100H

Overview

The Nexperia 74AVC2T45GD-Q100H is a dual-bit, dual-supply voltage level translator and transceiver with 3-state outputs. It enables bidirectional level translation between any low-voltage nodes ranging from 0.8 V to 3.6 V. The device features two data input-output ports (nA and nB), a direction control input (DIR), and dual-supply pins VCC(A) and VCC(B). Pins nA and DIR are referenced to VCC(A), while pins nB are referenced to VCC(B). A HIGH on DIR allows transmission from nA to nB, and a LOW allows transmission from nB to nA.

Feature Summary

• Automotive product qualification in accordance with AEC-Q100 Grade 1 standard
• IOFF circuitry provides partial power-down mode operation preventing damaging backflow current
• High noise immunity with low noise overshoot and undershoot
• ESD protection exceeding 8000 V for HBM and 1000 V for CDM

Applications

• Bidirectional logic level-shifting applications
• Unidirectional logic level-shifting applications
• Partial power-down applications requiring IOFF functionality

Procurement Notes

Verify the specific package variant against the ordering information table, as the suffix indicates the physical package type (e.g., DP for TSSOP8, DC for VSSOP8, GT for XSON8, GS for XSON8). Confirm that the required temperature range matches the -40 °C to +125 °C specification listed for all variants. Ensure the application design accounts for the lack of an output enable pin to avoid bus contention during direction changes.

Selection Notes

Select this component when bidirectional translation between dissimilar voltage domains within the 0.8 V to 3.6 V range is required. It is suitable for automotive applications due to AEC-Q100 Grade 1 qualification. Designers must manage bus contention manually in bidirectional setups since there is no dedicated output enable pin. Verify that the system can tolerate the calculated enable times derived from disable and propagation delays.

Part Context

This device belongs to the 74AVC2T45-Q100 family of dual-supply level translators. It shares functional characteristics with other members like the 74AVC2T45DP-Q100 but differs in packaging options such as TSSOP8, VSSOP8, and various XSON8 configurations. The 'GD' suffix specifically denotes the package and marking code combination, distinguishing it from other physical form factors within the same electrical specification set.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.