74AVCH2T45DC-Q100H

Overview

The Nexperia 74AVCH2T45DC-Q100H is a dual-bit, dual-supply voltage level translator and transceiver with 3-state outputs. It operates within a supply voltage range of 0.8 V to 3.6 V for both VCC(A) and VCC(B). The device supports bidirectional data transmission controlled by a DIR input pin. It features IOFF circuitry for partial power-down applications and active bus hold circuitry on data inputs. The component is qualified to AEC-Q100 Grade 1 standards and functions reliably across an ambient temperature range of -40 °C to +125 °C.

Feature Summary

• Bidirectional level translation between independent low-voltage nodes
• IOFF circuitry prevents damaging backflow current during partial power-down
• Active bus hold maintains valid logic levels on floating or unused inputs
• Suspend mode activates high-impedance state when either supply reaches GND

Applications

• Partial power-down system architectures requiring isolated power domains
• Bidirectional interface translation between mixed-voltage logic systems
• Automotive electronic control units and sensor interfaces
• Low-voltage node translation (0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V)

Procurement Notes

Verify the specific suffix 'Q100H' corresponds to the required automotive qualification grade and tape-and-reel packaging configuration. Confirm that the VSSOP8 package dimensions align with the target PCB footprint. Ensure the design accounts for the specified thermal derating characteristics above 99 °C to maintain safe total power dissipation limits.

Selection Notes

Select this component when designing systems requiring bidirectional translation between two independent power domains operating within the 0.8 V to 3.6 V range. The integrated bus hold feature eliminates the need for external pull-up or pull-down resistors. Verify that the application requires AEC-Q100 Grade 1 qualification and can accommodate the single direction control input for managing data flow between ports.

Part Context

This part belongs to the Nexperia 74AVCH2T45-Q100 family of dual-bit voltage translators. It utilizes the SOT765-1 (VSSOP8) plastic very thin shrink small outline package. The marking code for identification is K45. The product data sheet revision is 1.1, dated 25 June 2024.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.