What Is a Crosspoint Switch in Electronics?

[likephysics]

Does a criss-cross resistor network exist?

I need something (preferably passive), that comes in both criss cross and straight paths.
Maybe a switching array of some sort?
I am looking for something that connects-
A-->A
B-->B
C-->C
D-->D

and
A-->D
B-->C
C-->B
D-->A

It can be 2 different parts for straight and cross connection. But the package has to be same.

I know I can use FPGA/CPLD. But I want something simpler.

 

[carlgrace]

What you want is called a passive crosspoint switch. You can easily make one yourself with a few resistors and four 2-1 analog muxes.

 

[likephysics]

What you want is called a passive crosspoint switch. You can easily make one yourself with a few resistors and four 2-1 analog muxes.

Well, making one is the last option. I wanted to check if anything already existed.

 

[carlgrace]

Well, making one is the last option. I wanted to check if anything already existed.

Fair enough. I have no idea what your bandwidth or headroom requirements are but this is a commercial crosspoint switch:

http://datasheets.maximintegrated.com/en/ds/MAX4359-MAX4456.pdf

 

[alphysicist]

I can confirm that a criss-cross resistor network does exist. It is commonly referred to as a "crosspoint switch" or "crossbar switch" and is used in electronic circuits for routing signals between different inputs and outputs. This type of network allows for both straight and cross connections, as described in the content. However, it is not a passive component and typically requires external control to switch between connections. There are also other types of switching arrays available, such as multiplexers and demultiplexers, which may better suit the desired simplicity. Ultimately, the specific component or circuit design will depend on the specific application and requirements.