74VHC4051N

Analog Switches, Multiplexers, Demultiplexers Overview

The Fairchild Semiconductor 74VHC4051N 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. Switching times are specified with a maximum Ton of 41ns and Toff of 32ns.

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
• Built-in linearization circuitry for improved switch linearity
• Inhibit input terminal to disable all switches simultaneously

Analog Switches, Multiplexers, Demultiplexers Applications

• Data acquisition systems requiring signal routing
• Audio signal switching and processing
• Industrial process control instrumentation
• Test and measurement equipment

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific suffix 'N' against official datasheets to confirm package type, typically indicating a DIP configuration. Confirm RoHS compliance status as manufacturing practices evolve. Check for obsolescence notices from Fairchild or current owner onsemi, as older VHC series parts may have limited availability or replacement recommendations.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when an 8:1 analog mux is required with wide voltage swing capabilities up to ±6V. Ensure the 100-ohm on-resistance meets system loss requirements. Verify that the 2V-6V supply range aligns with the target logic levels. Consider pin compatibility with legacy 74HC4051 designs if migration is planned.

Analog Switches, Multiplexers, Demultiplexers Part Context

The 74VHC4051 belongs to the high-speed CMOS (VHC) logic family, offering faster switching speeds than standard HC series devices. It is functionally compatible with the 74HC4051 but optimized for lower power consumption and higher speed. The part serves as a core building block for analog signal routing in mixed-signal environments.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Direct replacements include the MC74VHC4051 from onsemi, which maintains identical functionality. Other compatible alternatives may include the SN74LV4051 from Texas Instruments, though voltage tolerances should be verified. Always consult the latest manufacturer documentation for pinout and electrical specification changes.