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MM74C192

MM74C192 • Synchronous 4-Bit Up/Down Decade Counter • MM74C193 Synchronous 4-Bit Up/Down Binary Counter

Fairchild Semiconductor 

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 cir-

cuits. 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 supply range: 3V to 15V

s Carry and borrow outputs for N-bit cascading

s Asynchronous clear

s High noise immunity: 0.45 VCC (typ.)

Ordering Code:

Order Number Package Number

Package Description

MM74C192N

N16E

16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide

MM74C193M

M16A

16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow

MM74C193N

N16E

16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide

Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.

Connection Diagram

Top View

© 1999 Fairchild Semiconductor Corporation DS005901

www.fairchildsemi.com

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