CD74HCT4051E

Analog Switches, Multiplexers, Demultiplexers Overview

The CD74HCT4051E is an 8-channel analog multiplexer/demultiplexer manufactured by Harris Corporation. It operates on a single 4.5V to 5.5V supply or dual ±1V to ±5V supplies. The device features a maximum on-resistance of 130 ohms and a -3dB bandwidth of 180MHz. Switching times are specified with a maximum Ton of 39ns and Toff of 32ns. Channel capacitance ranges from 5pF to 25pF, with a maximum leakage current of 400nA. It is housed in a 16-pin PDIP package and supports an operating temperature range of -55°C to 125°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Provides eight independent bidirectional analog switches controlled by three digital address lines.
• Combines LSTTL speed characteristics with standard CMOS low power consumption.
• Features low off-state leakage current for effective signal isolation.

Analog Switches, Multiplexers, Demultiplexers Applications

• Data acquisition systems requiring multi-channel signal selection.
• Programmable gain amplifier circuits.
• Video signal routing and switching applications.

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the manufacturer designation carefully, as Texas Instruments is the primary producer of the CD74HCT4051 series. Confirm that the specific unit is indeed sourced from Harris Corporation and not a later generation TI part. Check datasheet revisions to ensure pinout and electrical specifications match the legacy Harris documentation.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when a robust 8:1 analog switch is required with wide voltage flexibility. The HCT logic interface ensures compatibility with standard TTL-level control signals. Consider the 130-ohm on-resistance and 180MHz bandwidth against system requirements for signal integrity and speed.

Analog Switches, Multiplexers, Demultiplexers Part Context

This component belongs to the 74HCT4051 family of high-speed CMOS logic devices. It serves as a foundational building block for analog signal routing within digital systems. The 'CD' prefix typically denotes commercial grade temperature ranges, though this specific variant supports extended industrial temperatures.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The CD74HCT4051M96 is a surface-mount equivalent offering identical electrical performance in a SOIC package. For through-hole replacements, verify availability from current manufacturers if Harris stock is exhausted.