Help identifying a logic chip

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

  1. MrSoftware

    Thread Starter Member

    Oct 29, 2013
    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.

  2. dl324

    Distinguished Member

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