2bit Counter

Discussion in 'General Electronics Chat' started by DC_Kid, Feb 29, 2008.

  1. DC_Kid

    Thread Starter AAC Fanatic!

    Feb 25, 2008
    any suggestions on which IC might be used as a 2bit counter. keeping in mind that costs are of concern, so if a 8bit counter is 50% less expensive than the 2bit version i will use the 8bit chip, etc.

    the intended use is to watch for the "signal" followed by a "reset" signal. if the "reset" is not seen for two ups of the "signal" (a binary "2") then a red LED will latch on. "signal" and "reset" are pulse widths that varies in the 2-100ms range.

    edit- am looking at this dual 4bit counter 74HC393, but this is negative clock edge. i found this nifty counter, can be programeed for hi-to-lo or lo-to-hi triggering HEF4520B.

  2. beenthere

    Retired Moderator

    Apr 20, 2004
    How about a dual flip-flop? That would be a 74HC74.