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Digital multiplexers are essential for consolidating multiple audio signals into a single output, streamlining setups for musicians, home theater enthusiasts, and audio professionals. Selecting the right multiplexer ensures seamless signal integration and avoids potential audio degradation, making it a crucial component for any advanced audio system.
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...
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...
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.
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...
Function: Use 16 ADCs to collect 16 analog signals.
Use the CD74HC4067 16-channel analog signal switch;Analog signal input: C0-C15 16 channels.
Analog output: DIG;Channel control: S0-S3
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...
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...
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...
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.
Analog output: DIG;Channel control: S0-S3
This is a breakout board for the very handy 16-Channel Analog/Digital Multiplexer/Demultiplexer CD74HC4067.
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 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...
A method for controlling the motor, lights, LED, DC motors, micro-pumps, solenoid valves, etc., very convenient.
How it Works: This is a breakout board for the CD74HC4067, a useful 16-channel analog/digital multiplexer/demultiplexer. The chip is similar to a rotary switch, it internally routes a common pin (COM in the schematic, SIG on the board) to one of the...
How to Use: Connect the 4 digital outputs to the address select pins (S0-S3) of the chip and send the binary address of the desired channel. This way you can connect up to 16 sensors to your system with only 5 pins
Bidirectional Communication: If you need bidirectional communication, you can add a second board to connect the TX line of the microcontroller to the RX lines of the 16 devices. By using multiple boards, you can create similar connections for interfaces...
Signal Type: The analog multiplexer supports digital and analog signals (voltage cannot be higher than VCC), and the connection works properly in both directions. Since the multiplexer/demultiplexer also supports digital signals, you can use it to...
Switching Method: The internal switches are bidirectional, support voltages between ground and VCC, have low on-resistance and low off-leakage, and use a "break before make" switching method to prevent crosstalk. The board also brings out the chip's...
Semiconductor material: Uses CMOS process, featuring low power consumption, high noise tolerance, and a wide operating voltage range (2V to 6V).
16-channel flexible switching: Similar to a rotary switch function, the common pin (COM/SIG) can be internally routed to any one of the 16 channel pins (CHANxx), enabling 16-to-1 signal switching.
Ultra-efficient pin control: Only 5 control pins (4 address selection bits S0-S3 + 1 common signal line) are required to manage up to 16 sensors, significantly saving microcontroller resources.
Breakout board design: Encapsulates chips into easy-to-use modules, simplifies hardware connections, and is suitable for rapid prototyping.
Ultra-wide operating temperature range (-55 to 125 Degrees Celsius), suitable for harsh environments such as industrial and automotive electronics, with strong stability.
Last update on 2026-07-17 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Digital Multiplexers
Comparison Tips
Input/Output Matching: Ensure the multiplexer's input types (optical, coaxial, etc.) match your source devices, and its output type is compatible with your receiver or amplifier.
Audio Format Support: Verify that the device can pass through or decode the audio formats (e.g., Dolby Digital, DTS, high-resolution PCM) used by your sources.
Build Quality: Opt for devices with sturdy construction and reputable brands known for reliability in audio equipment.
User Reviews: Read user feedback for insights into real-world performance, ease of use, and any potential issues not immediately apparent from specifications.
Frequently Asked Questions
What is the main purpose of a digital multiplexer?
A digital multiplexer allows you to combine multiple digital audio sources into a single output. This is useful for connecting several devices, like a Blu-ray player, game console, and streaming box, to a single input on your audio receiver or soundbar.
What's the difference between optical and coaxial digital audio inputs?
Optical inputs use a fiber optic cable (Toslink) to transmit digital audio signals, while coaxial inputs use a standard RCA cable. Both transmit digital audio, but optical can sometimes be less susceptible to electrical interference.
Do I need a multiplexer if my receiver has multiple digital inputs?
Not necessarily. If your receiver has enough digital inputs for all your devices, a multiplexer isn't required. However, it's useful if you have more sources than available inputs or want to simplify connections.
Can a digital multiplexer convert audio formats?
Most basic digital multiplexers simply switch between inputs and pass the signal through without conversion. Some advanced models might offer format conversion, but this is less common and should be clearly stated in the product specifications.
Will using a multiplexer degrade audio quality?
A well-designed digital multiplexer should not noticeably degrade audio quality, especially with digital signals. Poorly shielded components or low-quality internal converters could potentially introduce noise or jitter, so choosing a reputable brand is important.
What is sample rate and bit depth, and why do they matter?
Sample rate refers to how many times per second the audio signal is measured, and bit depth indicates the precision of each measurement. Higher sample rates and bit depths generally result in higher fidelity audio, so ensure your multiplexer supports the rates used by your sources.
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