HEF4051BT/AUJ

Analog Switches, Multiplexers, Demultiplexers Overview

The HEF4051BT/AUJ is an 8-channel analog multiplexer/demultiplexer manufactured by Nexperia. It operates on a single supply voltage ranging from 3.0 V to 15.0 V and features three digital select inputs (S1, S2, S3) and an active LOW enable input (E). The device includes eight independent bidirectional inputs/outputs (Yn) and one common input/output (Z). It provides ESD protection exceeding 2000 V (HBM) and 1000 V (CDM). The component supports ambient temperatures from -40 °C to +125 °C and is housed in a 16-lead SOIC package.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• CMOS technology ensures low power dissipation and high noise immunity for fully static operation.
• Integrated clamp diodes allow interfacing with voltages exceeding the positive supply rail using current limiting resistors.
• Standardized symmetrical output characteristics ensure consistent performance across all channels.

Analog Switches, Multiplexers, Demultiplexers Applications

• Analog signal multiplexing and demultiplexing
• Digital signal routing and gating
• Data acquisition systems

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm the exact package type and temperature rating. Confirm that the requested part number matches the intended application requirements before finalizing procurement orders.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component for applications requiring an 8:1 analog switch configuration within a 3 V to 15 V supply range. Ensure the design accommodates the specified ON resistance variations and propagation delays at the target operating frequency and load conditions.

Analog Switches, Multiplexers, Demultiplexers Part Context

This device belongs to the HEF4051B family of 8-channel analog multiplexers. It serves as a standard CMOS solution for switching multiple analog or digital signals through a single channel in electronic circuits.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Direct replacements include other variants within the HEF4051B series, such as the HEF4051BTT, provided the package style and electrical specifications align with the system requirements.

Analog Switches, Multiplexers, Demultiplexers FAQ

How does the device handle input voltages higher than VDD?

The inputs include clamp diodes, which enable the use of current limiting resistors to interface inputs to voltages in excess of VCC without damaging the device.

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

The Enable input is active LOW. When E is HIGH, all switches are turned off regardless of the state of the select inputs.

Does the device support automotive applications?

No. Unless explicitly stated as automotive qualified in the data sheet, this product is not suitable for automotive use and has not been tested according to automotive standards.