74HCT4051BQ-Q100,1

Overview

The Nexperia 74HCT4051BQ-Q100,1 is an automotive-grade single-pole octal-throw analog switch (SP8T) designed for multiplexer and demultiplexer applications. It features three digital select inputs (S0-S2), eight independent I/Os (Yn), a common I/O (Z), and an active-low enable input (E). Qualified to AEC-Q100 Grade 1 standards, it operates from -40 °C to +125 °C with VCC ranging from 4.5 V to 5.5 V. The device supports dual supplies (VCC-VEE) up to 10 V, enabling analog signal ranges of ±5 V. Key electrical parameters include a typical ON resistance of 60 Ω at VCC-VEE=9.0 V, propagation delay of 8 ns max, and ESD protection exceeding 2000 V HBM.

Feature Summary

• Automotive qualification in accordance with AEC-Q100 Grade 1 standards for reliable operation in vehicle environments.
• Logic level translation capability allowing 5 V logic control to interface with analog signals ranging from -5 V to +5 V.
• Built-in 'break before make' switching action to prevent signal shorting during channel transitions.
• DHVQFN package with side-wettable flanks facilitates automatic optical inspection of solder joints.

Applications

• Analog multiplexing and demultiplexing circuits
• Digital multiplexing and demultiplexing systems
• Signal gating and routing

Procurement Notes

Verify the specific ordering suffix matches the required DHVQFN16 package configuration. Confirm that the component meets AEC-Q100 Grade 1 requirements for your target automotive application. Ensure supply voltage conditions align with the specified 4.5 V to 5.5 V range for proper HCT logic operation.

Selection Notes

Select this part when automotive reliability and wide analog voltage handling are required. The HCT variant ensures compatibility with standard 5 V logic families. Consider the DHVQFN package for space-constrained PCB layouts requiring high-density mounting and thermal performance.

Part Context

This component belongs to the Nexperia 74HCT4051-Q100 family of 8-channel analog switches. It shares functional similarities with other members like the 74HC4051 variants but is optimized for CMOS TTL-compatible logic levels. The BQ suffix specifically denotes the DHVQFN16 package type within this product line.

Replacement Considerations

Direct substitutes include the 74HC4051BQ-Q100 for HC logic speed or the 74HCT4051PW-Q100 for TSSOP packaging. Verify pinout compatibility and ensure the replacement maintains the same AEC-Q100 grade if automotive certification is mandatory.

FAQ

What is the function of the Enable (E) input?

The Enable input is active LOW. When E is HIGH, all switches are turned off, isolating the common terminal Z from the independent terminals Yn.

How does the device handle input voltages exceeding VCC?

Inputs include clamp diodes that allow the use of current-limiting resistors to interface with voltages in excess of VCC without damaging the device.

What is the maximum operating temperature for this component?

The 74HCT4051BQ-Q100 is specified for an ambient temperature range from -40 °C to +125 °C.