MC74F160A View Datasheet(PDF) - Motorola => Freescale
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MC74F160A Datasheet PDF : 4 Pages
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SYNCHRONOUS PRESETTABLE
BCD DECADE COUNTER
The MC74F160A and MC74F162A are high-speed synchronous decade
counters operating in the BCD (8421) sequence. They are synchronously pre-
settable for application in programmable dividers and have two types of Count
Enable inputs plus a Terminal Count output for versatility in forming synchro-
nous multistage counters. The MC74F160A has an asynchronous Master Re-
set input that overrides all other inputs and forces the outputs LOW. The
MC74F162A has a Synchronous Reset input that overrides counting and par-
allel loading and allows the outputs to be simultaneously reset on the rising
edge of the clock.
• Synchronous Counting and Loading
• High-Speed Synchronous Expansion
• Typical Count Rate of 120 MHz
CONNECTION DIAGRAM
VCC TC Q0 Q1 Q2 Q3 CET PE
16 15 14 13 12 11 10 9
12345678
*R CP P0 P1 P2 P3 CEP GND
*MR for MC74F160A
*SR for MC74F162A
FUNCTION TABLE
SR PE CET CEP ACTION ON THE RISING CLOCK EDGE ( )
L
X
X
X Reset (Clear)
H
L
X
X
Load (Pn Qn)
H
H
H
H Count (Increment)
H
H
L
X No Change (Hold)
H
H
X
L
No Change (Hold)
H = HIGH Voltage Level; L = LOW Voltage Level; X = Don’t Care
STATE DIAGRAM
0123 4
15
5
14
6
13
7
12 11 10 9 8
MC74F160A
MC74F162A
SYNCHRONOUS PRESETTABLE
BCD DECADE COUNTER
FAST™ SHOTTKY TTL
16
1
J SUFFIX
CERAMIC
CASE 620-09
16
1
N SUFFIX
PLASTIC
CASE 648-08
16
1
D SUFFIX
SOIC
CASE 751B-03
ORDERING INFORMATION
MC74FXXXAJ
MC74FXXXAN
MC74FXXXAD
Ceramic
Plastic
SOIC
LOGIC SYMBOL
93456
7
PE
CEP
P0
P1
P2
P3
10 CET
TC 15
2 CP*R Q0 Q1 Q2 Q3
1 14 13 12 11
VCC = PIN 16
GND = PIN 8
*MR for MC74F160A
*SR for MC74F162A
FAST AND LS TTL DATA
4-71
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