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Analog multiplexers, often called muxes, are essential components for routing multiple input signals to a single output. Selecting the correct analog multiplexer is crucial for ensuring signal integrity, minimizing noise, and achieving the desired performance in your electronic projects or systems. Understanding their key specifications will help you make an informed decision.
CD74HC4067 board for the very handy 16-Channel Analog/Digital Multiplexer/Demultiplexer, use the CD74HC4067 16-channel analog signal switch;Analog signal input: C0-C15 16 channels; Analog output: DIG; Channel control: S0-S3
It works with both digital and analog signals (the voltage can’t be higher than VCC), and the connections function in either direction.If you want two-way communications,you can add a second board to route your microcontroller's TX line to 16 device's...
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...
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.
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...
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!
Since the mux/demux also works with digital signals, you can use it to pipe TTL level serial data to or from multiple devices. For example, you could use it to connect the TX pins of 16 devices to one RX pin on your microcontroller. You can then select...
4 BNC Video Inputs - Each supports Analog CCTV (CVBS), HD-TVI, AHD, HD-CVI security cameras.
Dual Monitor Output Supported - VGA and HDMI ports may be used at the same on two separate monitors.
Multiple Viewing Modes - Users can select from multiple grid displays including Full Screen / Single Camera, Quad View / 4 Cameras, Picture-in-Picture, Horizontal & Vertical Split Screen, and Auto Sequencing.
Wireless Infrared Remote Control and Power Supply Included
The 74HC4051 module is an 8-channel analog multiplexer/demultiplexer with 3 digital selects (S0-S2), one active low enable (E), and 8 independent inputs/outputs (Y0-Y7) ) and a common input / output (Z).
VCC and GND are the supply pins for the digital control terminals (S0-S2, E). The VCC to GND range of the 74HC4051 is 2.0V-10.0V.
When E is low, one of the 8 switches will be selected by S0-S2 (low-impedance state). When E is high, all switches enter a high-impedance state, directly ignoring S0-S2.
As a digital multiplexer/demultiplexer, the VEE will be connected to GND (typically grounded).
8 Channel CCTV Video Multiplexer Color Quad Processor compatible with all Analog Security Cameras. NOT Compatible with 720P/1080P AHD / TVI / CVI / HD-SDI CCTV Cameras.
Multiple display modes: 8 camera view, 4 camera view, 2 camera view, single camera view, PIP (picture in picture)
NTSC and PAL Video Format Supported. Resolution PAL: 720 x 576; NTSC: 720 x 480
8 Channel BNC Video Inputs, 1 BNC VCR In, 1 BNC VCR Out, 1 BNC Monitor. Image Freeze Function, Selectable Image Zoom Area, Video Loss Detection, Motion Detection, Auto sequence
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...
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!
Since the mux/demux also works with digital signals, you can use it to pipe TTL level serial data to or from multiple devices. For example, you could use it to connect the TX pins of 16 devices to one RX pin on your microcontroller. You can then select...
Last update on 2026-10-16 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Analog Multiplexers
Understanding Analog Multiplexer Basics
Analog multiplexers are semiconductor devices that allow a single analog signal path to share multiple input lines. They function like a switch, controlled by digital select lines, to connect one of the input channels to the common output channel. This capability is vital in applications where signal consolidation or signal selection is required, such as data acquisition systems, audio routing, and sensor networks.
Key Specifications to Consider
When choosing an analog multiplexer, several technical specifications are paramount. The number of channels determines how many input signals can be routed. On-resistance affects signal loss; lower is better. Off-isolation indicates how well the device blocks signals from unselected channels; higher is better. Bandwidth is critical for high-frequency applications. Also, consider the supply voltage range and the switching speed required for your application.
Types of Analog Multiplexers
Analog multiplexers come in various configurations. Common types include 4-channel, 8-channel, and 16-channel devices. They can be designed for single-ended or differential signals. Some multiplexers offer features like break-before-make switching to prevent signal distortion during channel transitions. Understanding the signal type and the complexity of your routing needs will guide your choice between these types.
Frequently Asked Questions
What is the primary function of an analog multiplexer?
An analog multiplexer acts as a digitally controlled switch that selects one of several analog input signals and routes it to a single output line. This allows multiple signals to share a common transmission path or processing unit.
What does 'on-resistance' mean for an analog multiplexer?
On-resistance refers to the resistance of the internal switch when it is closed and conducting current. A lower on-resistance is desirable as it minimizes signal loss and voltage drop across the multiplexer.
How does 'off-isolation' impact performance?
Off-isolation measures how effectively the multiplexer prevents signals from unselected channels from leaking through to the output. Higher off-isolation is crucial for preventing crosstalk and maintaining signal purity in complex systems.
What is the difference between break-before-make and make-before-break switching?
Break-before-make switching ensures that the old connection is broken before the new one is made, preventing signal distortion or short circuits during channel transitions. Make-before-break maintains a connection while switching, which can be useful in certain signal routing scenarios.
How do I choose the right number of channels?
The number of channels you need depends directly on how many input signals you intend to route to a single output. Count the total number of distinct analog signals that will share the multiplexer's output.
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