74LVCH8T245BQ-Q10J

Overview

The Nexperia 74LVCH8T245BQ-Q10J is an 8-bit dual supply translating transceiver with 3-state outputs, designed for bidirectional level translation. It operates within a wide supply voltage range of 1.2 V to 5.5 V on both ports (VCC(A) and VCC(B)). The device features active bus hold circuitry to maintain valid logic levels on floating inputs. It includes IOFF circuitry for partial power-down applications, preventing backflow current. Qualified to AEC-Q100 Grade 1 standards, it supports operation from -40 °C to +125 °C and utilizes a DHVQFN-24 package.

Feature Summary

• Bidirectional level translation between independent low voltage nodes
• Active bus hold circuitry maintains unused or floating data inputs at valid logic levels
• IOFF circuitry enables partial power-down mode by disabling outputs to prevent damaging backflow current
• Automotive qualification in accordance with AEC-Q100 Grade 1 standard

Applications

• Partial power-down applications requiring isolation during power-off states
• Automotive electronic systems meeting AEC-Q100 reliability requirements
• Translating between mixed voltage domains such as 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V, and 5.0 V

Procurement Notes

Verify the specific ordering suffix matches the required package type and temperature range. Confirm that the component meets the necessary automotive qualification standards for the intended application environment. Ensure compatibility with the target system's voltage levels and signal integrity requirements before finalizing procurement decisions.

Selection Notes

Select this component when bidirectional translation between disparate voltage domains is required alongside robust automotive reliability standards. The inclusion of active bus hold functionality makes it suitable for interfaces where input states must remain stable during idle periods. Verify that the DHVQFN package dimensions align with the available PCB space constraints.

Part Context

This part belongs to the 74LVCH8T245-Q100 family of 8-bit dual supply translating transceivers. It shares functional characteristics with the 74LVC8T245-Q100 variant but distinguishes itself through integrated active bus hold circuitry. The BQ suffix indicates the DHVQFN package configuration, providing a compact solution for high-density board layouts compared to leaded packages.

Replacement Considerations

The 74LVC8T245BQ-Q100 serves as a functional substitute within the same family, differing primarily by the absence of active bus hold circuitry. Both components share identical pinouts, electrical specifications, and package dimensions, allowing for direct replacement if bus hold functionality is not utilized in the design.