Synchronous 4-Bit Up/Down Binary Counter
MM74C192 • MM74C193 Synchronous 4-Bit Up/Down Decade Counter • Synchronous 4-Bit Up/Down Binary Counter
January 1991 Re...
Description
MM74C192 MM74C193 Synchronous 4-Bit Up/Down Decade Counter Synchronous 4-Bit Up/Down Binary Counter
January 1991 Revised October 1999
MM74C192 MM74C193
Synchronous 4-Bit Up/Down Decade Counter Synchronous 4-Bit Up/Down Binary Counter
General Description
The MM74C192 and MM74C193 up/down counters are monolithic complementary MOS (CMOS) integrated circuits. The MM74C192 is a BCD counter, while the MM74C193 is a binary counter.
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.
Features
s High noise margin: 1V guaranteed s Tenth power TTL compatible: Drive 2 LPTTL loads s Wide sup...
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