In many industrial, scientific or medical processes, accurate and reliable data is needed for tasks such as monitoring environmental variables, measuring physical quantities or evaluating user interactions. Data acquisition involves capturing and recording analog signals provided by sensors, meters, or other data sources. In this process, analog signals need to be sampled, converted and stored with precision. It is also important to consider factors such as timing, scaling, and maintaining data integrity. Data collection forms the basis of advanced data analysis, visualization and decision-making processes.

What is a multiplexer?

In many electronics applications, it is necessary to simultaneously collect multiple analog signals to monitor environmental variables, analyze data from sensors, or make accurate and precise measurements. However, the process of collecting multiple analog data can be a challenging task, given that microcontrollers or other digital devices often have a limited number of analog input pins. At this point, analog multiplexers come into play. Analog multiplexers offer expanded analog input capability by providing the capabilities to route and select multiple analog signals over a single input pin.

The 74HC4067 chip is the most known and used chip that enables the transfer of multiple data to systems with microcontrollers. The 74HC4067 is an analog multiplexer and demultiplexer chip designed to meet such requirements.

The 74HC4067 is an analog multiplexer and demultiplexer chip used to route and select analog signals across multiple channels. This chip provides extended analog input/output capabilities when used with microcontrollers, digital systems such as Arduino, and other analog circuits.

The basic function of the chip is to transmit multiple analog signals over a single analog pin. The 74HC4067 has 16 channels and can route analog signals through these channels. Using the 74HC4067, the microcontroller or other control circuit can read or control the signals of different sensors, input devices or output devices through a single chip.

This chip is widely used in applications such as analog data acquisition, reading multi-channel analog inputs, routing or duplicating analog signals. It enables the use of multiple sensors or data sources, especially in microcontrollers with a limited number of analog input/output pins.

To summarize, the 74HC4067 chip is an integrated that performs multi-channel analog signal routing and selection, making multiple analog signals controllable from a single pin.

Some key specifications of the 74HC4067 chip:
Integrated chip type: Analog multiplexer and demultiplexer (MUX/DEMUX)
Number of output channels: 16 channels
Internal resistance: 70 ohms (typical value)
Switching time: 60 ns (with high speed CMOS technology)
Supply voltage: 2V to 6V
Input voltage range: 0V to VCC (depending on supply voltage)
Typical current consumption: 2 mA
High input voltage (VIH) for serial data input (Serial Data Input - S0-S3): 2V
Low input voltage (VIL) for Serial Data Input (S0-S3): 0.8V
High input voltage (VIH) for MUX control pins (S0-S3): 2V
Low input voltage (VIL) for MUX control pins (S0-S3): 0.8V
High input voltage (VIH) for MUX/DEMUX control pin (E/IN): 2V
Low input voltage (VIL) for MUX/DEMUX control pin (E/IN): 0.8V
Maximum storage temperature: -65°C to +150°C