16-ch MUX

[last updated: 2016-08-24]
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CD74HC4067 16-ch Mux

Don't remember who I got this from, some Chinese mfr. I think I paid $2 but searching now on eBay I see several for even less.

From supplier:
This is a breakout board for the very 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 16 channel pins (CHANxx). It works with both digital and analog signals (the voltage can’t be higher than VCC), and the connections function in either direction.

To control it, connect 4 digital outputs to the chip’s address select pins (S0-S3), and send it the binary address of the channel you want. This allows you to connect up to 16 sensors to your system using only 5 pins!

The internal switches are bidirectional, support voltages between ground and VCC, have low “on” resistance and low “off” leakage, and to prevent crosstalk, perform “break-before-make” switching. The board also breaks out the chip’s “enable” pin, which when driven high, will completely disconnect the common pin (all switches “off”).

Features:
1.2V to 6V operation
2.“On” resistance: 70 Ohms @ 4.5V
3.6ns break-before-make @ 4.5V
4.Wide operating temperature range: -55C to 125C