74VHC4051WM

Analog Switches, Multiplexers, Demultiplexers Overview

The Fairchild Semiconductor 74VHC4051WM is a single 8-channel analog multiplexer/demultiplexer implemented in advanced silicon-gate CMOS technology. It features bidirectional switches with low on-resistance and low off-leakage currents. The device supports an analog input voltage range of ±6V peak while being controlled by digital signals from 0 to 6V. Key electrical parameters include a maximum on-resistance of 100 ohms, a channel-to-channel matching (ΔRon) of 10 ohms, and a supply voltage range of 2V to 6V for single supply or ±1V to ±6V for dual supply. The component operates within a temperature range of -40°C to 85°C and is housed in a 16-SOIC package.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Digital control of up to eight bidirectional analog switches
• Logic level translation enabling 5V logic control with ±5V analog signals
• Integrated linearization circuitry for improved switch linearity
• Inhibit input terminal to disable all switches simultaneously

Analog Switches, Multiplexers, Demultiplexers Applications

• Signal routing in data acquisition systems
• Audio signal switching applications
• Test and measurement equipment signal paths
• Industrial process control signal multiplexing

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific suffix 'WM' against the manufacturer's current documentation to confirm pinout and package dimensions match the 16-SOIC specification. Check for obsolescence status as VHC series components may have been superseded by newer iterations. Ensure RoHS compliance documentation is available if required for the target assembly process.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when a single 8:1 analog switch is required with high linearity and low distortion. The VHC series offers faster switching speeds compared to standard HC series devices. Verify that the ±6V analog input range meets the signal requirements and that the 100-ohm on-resistance is acceptable for the load impedance.

Analog Switches, Multiplexers, Demultiplexers Part Context

The 74VHC4051 is part of the Fairchild 74VHC family of high-speed CMOS logic devices. It is functionally and pin-compatible with the older 74HC4051 but utilizes VHC technology for improved speed and lower power consumption. The device serves as a core building block for creating configurable analog signal paths in mixed-signal circuits.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Direct replacements include the MC74HC4051ADWG from onsemi, which shares similar functionality but may differ in electrical characteristics such as on-resistance and propagation delay. Other compatible alternatives from different manufacturers should be evaluated for pin compatibility and parameter alignment.