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MC74HC589A_14 Datasheet, PDF (5/12 Pages) ON Semiconductor – 8-Bit Serial or Parallel-Input/Serial-Output Shift Register with 3-State Output
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MC74HC589A
TIMING REQUIREMENTS (Input tr = tf = 6 ns)
Symbol
Parameter
tsu
Minimum Setup Time, A−H to Latch Clock
(Figure 6)
tsu
Minimum Setup Time, Serial Data Input SA to Shift Clock
(Figure 7)
tsu
Minimum Setup Time, Serial Shift/Parallel Load to Shift Clock
(Figure 8)
th
Minimum Hold Time, Latch Clock to A−H
(Figure 6)
th
Minimum Hold Time, Shift Clock to Serial Data Input SA
(Figure 7)
tw
Minimum Pulse Width, Shift Clock
(Figure 3)
tw
Minimum Pulse Width, Latch Clock
(Figure 2)
tw
Minimum Pulse Width, Serial Shift/Parallel Load
(Figure 5)
tr, tf Maximum Input Rise and Fall Times
(Figure 2)
VCC
Guaranteed Limit
V −55_C to 25_C ≤ 85_C ≤ 125_C Unit
2.0
100
3.0
40
4.5
20
6.0
17
125
150
ns
50
60
25
30
21
26
2.0
100
3.0
40
4.5
20
6.0
17
125
150
ns
50
60
25
30
21
26
2.0
100
3.0
40
4.5
20
6.0
17
125
150
ns
50
60
25
30
21
26
2.0
25
3.0
10
4.5
5
6.0
5
30
40
ns
12
15
6
8
6
7
2.0
5
3.0
5
4.5
5
6.0
5
5
5
ns
5
5
5
5
5
5
2.0
75
3.0
40
4.5
15
6.0
13
95
110
ns
50
60
19
23
16
19
2.0
80
3.0
40
4.5
16
6.0
14
100
120
ns
50
60
20
24
17
20
2.0
80
3.0
40
4.5
16
6.0
14
100
120
ns
50
60
20
24
17
20
2.0
1000
1000
1000
ns
3.0
800
800
800
4.5
500
500
500
6.0
400
400
400
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