DM54L93

  Each of these DM54L93 monolithic counters contains four master-slave flip-flops and additional gating to provide a divide-by-two counter and a three-stage binary counter for which the count cycle length is divide-by-eight.

  To use their maximum count length (decade divide-by-twelve or four-bit binary) the B input is connected to the QA output. The input count pulses are applied to input A and the outputs are as described in the appropriate truth table