Help identifying a logic chip

Discussion in 'General Electronics Chat' started by MrSoftware, Dec 5, 2015.

  1. MrSoftware

    Thread Starter Active Member

    Oct 29, 2013
    545
    133
    Does anyone recognize the IC below that I have identified some of the pins? It's on a model ZW20-J radio receiver. When you push a button on the remote control, the corresponding data pin on this chip goes high. Or at least it used to, until I accidentally shorted it with +12v using my fat multi meter probe (topic covered in another thread). ;) The PCB maker filed off the markings on the chips. I showed the other side of the PCB as well just in case it helps.



    chip.jpg
    zw20-j.jpg
     
  2. dl324

    Distinguished Member

    Mar 30, 2015
    3,391
    653
    If you posted a complete connection diagram, someone might be inclined to try to reverse engineer it for you.
     
Loading...