MC74F169 Motorola, MC74F169 Datasheet
MC74F169
Manufacturer Part Number
MC74F169
Description
(MC74F168 / MC74F169) 4-STAGE SYNCHRONOUS BIDIRECTIONAL COUNTERS FAST SCHOTTKY TTL
Manufacturer
Motorola
Datasheet
1.MC74F169.pdf
(4 pages)
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Part Number:
MC74F169D
Manufacturer:
MOTO
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208
4-STAGE SYNCHRONOUS
BIDIRECTIONAL COUNTERS
down counters. The F168 is a BCD decade counter; the F169 is a modulo-16
binary counter. Both feature a preset capability for programmable operation,
carry lookahead for easy cascading, and a U/D input to control the direction
of counting. All state changes, whether in counting or parallel loading, are initi-
ated by the LOW-to-HIGH transition of the clock.
The MC54/74F168 and MC54/74F169 are fully synchronous 4-stage up/
Asynchronous Counting and Loading
Built-In Lookahead Carry Capability
Presettable for Programmable Operation
0
9
8
H = HIGH Voltage Level; L = LOW Voltage Level; X = Don’t Care
MODE SELECT TABLE
COUNT DOWN
COUNT UP
PE
H
H
H
H
L
10
11
1
7
MC54/74F168
CEP
15
14
2
H
6
X
L
L
X
V CC
U/D
16
CONNECTION DIAGRAM (TOP VIEW)
1
TC
CP
15
2
3
4
5
CET
H
X
L
L
X
STATE DIAGRAMS
Q 0
14
P 0
3
13
12
U/D
Q 1
13
P 1
H
4
X
X
X
L
Q 2
12
P 2
5
Load (P n
Count Up (Increment)
Count Down (Decrement)
No Change (Hold)
No Change (Hold)
15
14
13
12
0
Q 3
P 3
11
6
FAST AND LS TTL DATA
Action on Rising
Clock Edge
COUNT DOWN
COUNT UP
CET
CEP
10
7
11
1
MC54/74F169
Q n )
GND
PE
9
8
4-82
10
2
3
9
4
5
6
7
8
16
16
BIDIRECTIONAL COUNTERS
4-STAGE SYNCHRONOUS
MC54/74F168
MC54/74F169
16
ORDERING INFORMATION
10
1
1
7
2
1
MC54FXXXJ
MC74FXXXN
MC74FXXXD
FAST
1
LOGIC SYMBOL
V CC = Pin 16
GND = Pin 8
U/D
CEP
CET
CP
PE P 0 P 1 P 2 P 3
Q 0 Q 1 Q 2 Q 3
14 13 12 11
9
SCHOTTKY TTL
3 4 5 6
Ceramic
Plastic
SOIC
CASE 751B-03
CASE 620-09
CASE 648-08
CERAMIC
N SUFFIX
D SUFFIX
J SUFFIX
PLASTIC
TC
SOIC
15
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MC74F169 Summary of contents
Page 1
SYNCHRONOUS BIDIRECTIONAL COUNTERS The MC54/74F168 and MC54/74F169 are fully synchronous 4-stage up/ down counters. The F168 is a BCD decade counter; the F169 is a modulo-16 binary counter. Both feature a preset capability for programmable operation, carry lookahead for ...
Page 2
MC54/74F168 MC54/74F169 MC54/74F168 CEP CET U MC54/74F169 CEP CET U ...
Page 3
MC54/74F168 MC54/74F169 The F168 and F169 use edge-triggered J-K type flip-flops and have no constraints on changing the control or data input signals in either state of the clock. The only requirement is that the various inputs attain the desired ...
Page 4
MC54/74F168 MC54/74F169 AC CHARACTERISTICS Symbol Parameter f max Maximum Clock Frequency t PLH Propagation Delay t PHL (PE HIGH or LOW) t PLH Propagation Delay t PHL (F168) t PLH Propagation Delay t ...