MC74HC259A Datasheet, PDF (4/9 Pages) ON Semiconductor – 8-Bit Addressable Latch 1-of-8 Decoder

MC74HC259A
AC ELECTRICAL CHARACTERISTICS (C_L = 50 pF, Input t_r = t_f = 6 ns)
Symbol
t_PLH,
t_PHL
Parameter
Maximum Propagation Delay, Data to Output
(Figures 2 and 7)
t_PLH,
t_PHL
Maximum Propagation Delay, Address Select to Output
(Figures 3 and 7)
t_PLH,
t_PHL
Maximum Propagation Delay, Enable to Output
(Figures 4 and 7)
t_PHL
Maximum Propagation Delay, Reset to Output
(Figures 5 and 7)
t_TLH,
t_THL
Maximum Output Transition Time, Any Output
(Figures 2 and 7)
C_in
Maximum Input Capacitance
C_PD
Power Dissipation Capacitance (Per Package)
TIMING REQUIREMENTS (Input t_r = t_f = 6 ns)
Symbol
t_su
Parameter
Minimum Setup Time, Address or Data to Enable
(Figure 6)
t_h
Minimum Hold Time, Enable to Address or Data
(Figure 6)
t_w
Minimum Pulse Width, Reset or Enable
(Figure 4 or 5)
t_r, t_f
Maximum Input Rise and Fall Times
(Figure 2)
Guaranteed Limit
V_CC
− 55 to
V
25°C
v 85°C v 125°C Unit
2.0
125
160
175
ns
3.0
45
60
70
4.5
32
32
42
6.0
25
28
33
2.0
150
175
200
ns
3.0
60
70
80
4.5
32
40
45
6.0
28
30
35
2.0
150
175
200
ns
3.0
60
70
80
4.5
32
40
45
6.0
28
30
35
2.0
110
125
160
ns
3.0
36
45
60
4.5
22
26
32
6.0
19
23
28
2.0
75
3.0
27
4.5
15
6.0
13
95
110
ns
32
36
19
22
16
19
−
10
10
10
pF
Typical @ 25°C, V_CC = 5.0 V
30
pF
Guaranteed Limit
V_CC
− 55 to
V
25°C
v 85°C v 125°C Unit
2.0
75
3.0
30
4.5
15
6.0
13
95
110
ns
40
55
19
22
16
19
2.0
1
1
1
ns
3.0
1
1
1
4.5
1
1
1
6.0
1
1
1
2.0
70
3.0
27
4.5
15
6.0
13
90
100
ns
32
36
19
22
16
19
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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