74LVCH245ABQ-Q100X

Overview

The Nexperia 74LVCH245ABQ-Q100X is an octal bus transceiver with 3-state outputs, designed for automotive applications. It operates within a supply voltage range of 1.2 V to 3.6 V and features Schmitt-trigger inputs tolerant of slow rise/fall times. The device includes IOFF circuitry for partial power-down mode, preventing backflow current. Inputs are overvoltage tolerant up to 5.5 V, enabling direct interfacing with 5 V logic in mixed-voltage environments. It complies with AEC-Q100 Grade 1 standards and JEDEC specifications.

Feature Summary

• Automotive qualification compliant with AEC-Q100 Grade 1 standards
• IOFF circuitry enables safe partial power-down operation without damaging backflow current
• Bus hold functionality on all data inputs maintains stable input states
• DHVQFN package design supports Automatic Optical Inspection (AOI) via side-wettable flanks

Applications

• Automotive engine control units
• Mixed 3.3 V and 5 V logic interface systems
• Partial power-down application circuits

Procurement Notes

Verify the specific suffix 'BQ' corresponds to the DHVQFN-20 package variant during procurement. Confirm that the 'X' suffix indicates reel packaging if tape-and-reel handling is required. Ensure the component meets the AEC-Q100 Grade 1 reliability requirements for your target automotive environment before finalizing orders.

Selection Notes

Select this component when designing automotive systems requiring robust bidirectional data transfer between different voltage domains. The LVCH series offers bus hold capabilities not present in standard LVC variants, ensuring signal integrity. Verify that the DHVQFN package dimensions fit your PCB layout constraints and that thermal dissipation requirements are met within the specified temperature ranges.

Part Context

This part belongs to the Nexperia 74LVC/LVCH245A-Q100 family of octal bus transceivers. It shares functional similarities with other members like the 74LVC245ABQ-Q100 but distinguishes itself through the inclusion of bus hold circuitry on all data inputs. The family is engineered for low-power consumption and wide supply voltage compatibility, serving as a versatile solution for complex digital interfaces.

Replacement Considerations

The 74LVC245ABQ-Q100 serves as a functional substitute within the same family, though it lacks the bus hold feature found in the LVCH variant. Designers must verify that the absence of bus hold does not compromise signal stability in their specific application before swapping components.