having trouble finding the appropriate digital switching ICs for my project

Discussion in 'The Projects Forum' started by abbas14, Dec 4, 2013.

  1. abbas14

    Thread Starter New Member

    Dec 4, 2013
    hello everyone!
    i m a newbie here, and need some help.
    i am looking for ICs for the purpose of digital switching, but am unable to find the appropriate ICs. i am looking for an IC which could be used for the purpose of digital switching purpose, such as MUX or electrical relays. the IC must have a logic circuit with two inputs, one output and a control signal. when the control signal is 0, the first input should be obtained at the output terminal; and when the control signal is 1, the second input is obtained at the output terminals; exactly as a digital MUX. the different thing is, the control signal is low power signal (max. 3volts dc) and the inputs are high power (about 30 volts dc).
    i guess, electrical isolation is needed between the input/output circuitry and the control signal. isn't it so??
    the IC should have atleast four of such logic circuits in a single package; thats easy. the problem is, each of such control logic circuit should have a separate control signal, i.e., for each pair of high-power inputs.
    in simple words, i am looking for IC having atleast four digital 2-input MUXs in a single package, each MUX having its own separate control signal that could be controlled with low power signals (max. 3 volts dc), and each MUX should be capable of handling high power (about 30 volts dc) as its input and output.

    can anyone please help me with that??
  2. crutschow


    Mar 14, 2008
    How much output current do you need to switch?
  3. MikeML

    AAC Fanatic!

    Oct 2, 2009