Integrated Circuits

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Wednesday, January 16, 2019

74HCT4067 Analog Multiplexer

An Excellent way to expand your A/D convertors I/O capability. Multiple Analog Inputs can be routed to a single Opamp or Analog Input of a uC or uP System. Use protection Zeners or clamping inputs.

The 74HC4067; 74HCT4067 is a single-pole 16-throw analog switch (SP16T) suitable for use in analog or digital 16:1 multiplexer/demultiplexer applications. The switch features four digital select inputs (S0, S1, S2 and S3), sixteen independent inputs/outputs (Yn), a common input/output (Z) and a digital enable input (E). When E is HIGH, the switches are turned off. Inputs include clamp diodes.

74HCT4067 Analog Multiplexer

74HC(T)4067 16-channel analog multiplexer/demultiplexer

delabs Notes

This Mux is useful for making a Datalogger or Expanding the I/O of a PLC analog unit. A Multi-Point process scanner, an analog Sample and hold system are some ideas. If you have many testpoints to monitor an you have a Embedded System with one analog input then you could think of this. Remember to protect the inputs and isolate if required. Real world parameters pose real hazards.

Discuss at the EE Forum 

HCT family is like an Ideal Logic Device. The device interfaces with TTL, CMOS, Microcontrollers and peripheral drivers or A/D Convertors or D/A Convertors. It is the best family for both the TTL 7400 series and the 4000 series CMOS. Low power consumption, good speed, nice drive capability.

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