CD74HC4067 High Speed CMOS 16 Channel Analog Multiplexer

Function:

Use 16 ADC to collect 16 analog signals.

Use CD74HC4067 16-channel analog signal switcher

Analog signal input: C0-C15 16 channels

Analog output: DIG

Channel control: S0-S3

Description: This is a cutoff switch for the handy 16-channel analog/digital multiplexer/demultiplexer CD74HC4067. This chip is like a rotary switch: it internally routes the common pin (COM in the schematic, SIG on the board) to one of the 16 channel pins (both) cannot be greater than VCC, and the connections work in both directions. To control it, connect 4 digitals to the chip's address select pins (S0-S3) and send it the binary address of the desired channel (see the datasheet for details). This allows you to connect up to 16 sensors to your system using just 5 pins!

Since the multiplexer/demultiplexer also works with digital signals, you can use it to route TTL-level serial data to or from multiple devices. For example, you can use it to connect the TX pins of 16 devices to an RX pin on your verified device. You can then select one of these 16 devices to listen to. If you want two-way communications, you can add a second card to route your company's TX line to 16 RX lines on the device. Provisions for I2C, SPI, etc.

The board also breaks the chip's "enable" and "" pins, which when pushed high will disconnect the common pin (all switches "off").

Features:

2V to 6V operation

“On” Resistance: 70 Ohms at 4.5V

6ns pause-before-close at 4.5V

Wide operating temperature range: -55C to 125C

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