Electronics > Projects, Designs, and Technical Stuff
32:1 low cost mux switch?
tozitom:
hi forum,
I've designed a "keyboard sniffer/simulator" with 16 channels input/output - basic working is: a uC receives signals from 16 channels input (keyboard or other), and replicates them via 2x16 channels mux (4067d) - it also comunicates with other board in between via RX/TX bus...
example: if I have COL1 and ROW1 connected on input, I replicate it on output by controlling both mux"ABCD" inputs.
Anyway, I need to do the same but with 32 channels now... and using 32:1 mux seems not to be an option due to high cost of such components (ex = ADG732)! I planned to duplicate the 2x16 channels configuration and control the setup with the uC (ABCD + ENABLE) but wonder if there's out there some 4067D equivalent with 32 channels, or any other simple way to do the job...
Thanks for looking.
capt bullshot:
I'd use four 4051 type muxes tied together to a 32:1 mux, using the enable pins. Most probably this is smaller and cheaper than a dual 4067 type.
NiHaoMike:
Also take a look at cheap microcontrollers and FPGAs.
Scrts:
--- Quote from: NiHaoMike on July 20, 2020, 01:38:51 pm ---Also take a look at cheap microcontrollers and FPGAs.
--- End quote ---
This.
Long time ago I did a mux with Xilinx 9536 CPLD, when other options were not available.
Kleinstein:
i would consider 4051 (8:1) and using 4 pins from the µC. One does not even need to used the enable pins.
Navigation
[0] Message Index
[#] Next page
Go to full version