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零件编号
产品描述 (功能)
SN74LS669 查看數據表(PDF) - ON Semiconductor
零件编号
产品描述 (功能)
生产厂家
SN74LS669
SYNCHRONOUS 4-BIT UP/DOWN COUNTER
ON Semiconductor
SN74LS669 Datasheet PDF : 4 Pages
1
2
3
4
CONNECTION DIAGRAM
(TOP VIEW)
V
CC
RIPPLE
CARRY
OUTPUT
Q
A
OUTPUTS
Q
B
Q
C
ENABLE
T
Q
D
LOAD
16 15 14 13 12 11 10 9
RIPPLE
CARRY
Q
A
Q
B
Q
C
Q
D
ENABLE
T
OUTPUT
LOAD
UP/DOWN
ENABLE
CK A
B
CD
P
1 2 3 4 56 78
U/D CK A
B
C
D
ENABLE
P
GND
DATA INPUTS
(9) LOAD
(7) ENP
(10) ENT
(1) U/D
(3)
DATA
P
0
(4)
DATA
P
1
SN74LS669
LOGIC DIAGRAM
(5)
DATA
P
2
(6)
DATA
P
3
RCO (15)
(RIPPLE CARRY
OUTPUT)
(2) CP
CP D
Q
A
(14)
CP D
Q
B
(13)
CP D
Q
C
(12)
CP D
Q
D
(11)
GUARANTEED OPERATING RANGES
Symbol
Parameter
V
CC
Supply Voltage
T
A
Operating Ambient Temperature Range
I
OH
Output Current — High
I
OL
Output Current — Low
Min
Typ
Max
Unit
54
4.5
5.0
5.5
V
74
4.75
5.0
5.25
54
−
55
25
125
°
C
74
0
25
70
54, 74
−
0.4
mA
54
4.0
mA
74
8.0
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2
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