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74C192N
MM54C192 MM74C192 Synchronous 4-Bit Up Down Decade Counter MM54C193 MM74C193 Synchronous 4-Bit Up Down Binary Counter General Description Features 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 change on the positive-going transition of this clock These counters 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 external circuitry Y Y Y Y e Y 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 VCC (typ ) et Connection Diagram Y O bs ol Dual-In-Line Package C1995 National Semiconductor Corporation TL F 5901 TL F 5901 – 1 Top View Order Number MM54C192 MM74C192 MM54C193 or MM74C193 RRD-B30M105 Printed in U S A MM54C192 MM74C192 Synchronous 4-Bit Up Down Decade Counter MM54C193 MM74C193 Synchronous 4-Bit Up Down Binary Counter February 1988
TI
Texas Instruments Incorporated
U.S.A
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