MM74C192

· High noise margin                                      1V guaranteed
· Tenth power TTL compatible             Drive 2 LPTTL loads
· Wide supply range                                     3V to 15V
· Carry and borrow outputs for N-bit cascading
· Asynchronous clear
· High noise immunity                                   0.45 V_CC (typ.)

These up/down counters are monolithic complementary MOS (CMOS) integrated circuits. The MM54C192 and MM74C192 are BCD counters, while the MM54C193 and MM74C193 are binary counters.

Counting up and counting down is performed by two count inputs, one being held high while the other is clocked. The outputs of MM74C192 change on the positive-going transition of this clock.

These counters MM74C192 feature preset inputs that are set when load is a logical ``0'' and a clear which forces all outputs to ``0'' when it is at a logical ``1''. The counters also have carry and borrow outputs so that they can be cascaded using no ex ternalcircuitry.