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MM74C192N-MM74C193N Fast Delivery,Good Price
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MM74C192NNSN/a15avaiSynchronous 4-Bit Up/Down Decade Counter
MM74C193NNSCN/a265avaiSynchronous 4-Bit Up/Down Decade Counter


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MM74C192N-MM74C193N
Synchronous 4-Bit Up/Down Decade Counter
TL/F/5901
MM54C192/MM74C192
Synchronous
4-Bit
Up/Down
Decade
Counter
MM54C193/MM74C193
Synchronous
4-Bit
Up/Down
Binary
Counter
February 1988
MM54C192/MM74C192
Synchronous 4-Bit Up/Down Decade Counter
MM54C193/MM74C193
Synchronous 4-Bit Up/Down Binary Counter
General Description
These up/down countersare monolithic complementary
MOS (CMOS) integrated circuits. The MM54C192 and
MM74C192are BCD counters, whilethe MM54C193and
MM74C193are binary counters.
Countingupand counting downis performedbytwo count
inputs,one being held high whilethe otheris clocked.The
outputs changeon thepositive-going transition ofthis clock.
These countersfeature preset inputsthatareset when loada logical‘‘0’’anda clear which forcesall outputsto‘‘0’’
whenitisata logical ‘‘1’’.The countersalso have carryand
borrow outputsso that theycanbe cascaded usingnoex-
ternal circuitry.
Features High noise margin 1V guaranteed Tenth power TTL compatible Drive2 LPTTL loads Wide supply range 3Vto 15V Carryand borrow outputsfor N-bit cascading Asynchronous clear High noise immunity 0.45 VCC (typ.)
Connection Diagram
Dual-In-Line Package
TL/F/5901–1
Top View
Order NumberMM54C192, MM74C192,
MM54C193or MM74C193
C1995National SemiconductorCorporation RRD-B30M105/PrintedinU.S.A.
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