m54hc191 STMicroelectronics, m54hc191 Datasheet - Page 6

• Manufacturer Part Number: m54hc191
• Description: 4 Bit Synchronous Up/down Counters
• Manufacturer: STMicroelectronics

M54HC191
AC ELECTRICAL CHARACTERISTICS (C
6/13
t
t
t
t
t
t
t
t
t
Symbol
PLH
PLH
PLH
PLH
PLH
PLH
PLH
PLH
TLH
t
f
t
t
W(H)
MAX
W(L)
W(L)
t
t
t
s
s
h
t
t
t
t
t
t
t
t
t
THL
PHL
PHL
PHL
PHL
PHL
PHL
PHL
PHL
Output Transition
Time
Propagation Delay
Time
(CLOCK - Q)
Propagation Delay
Time
(CLOCK - RCO)
Propagation Delay
Time (CLOCK -
MAX/MIN)
Propagation Delay
Time (LOAD - Q)
Propagation Delay
Time (DATA - Q)
Propagation Delay
Time (ENABLE -
RCO)
Propagation Delay
Time (D/U - RCO)
Propagation Delay
Time (D/U - MAX/
MIN)
Maximum Clock
Frequency
Minimum Pulse
Width (CLOCK)
Minimum Pulse
Width (LOAD)
Minimum Set-up
Time (SI, PI - CK)
Minimum Set-up
Time (S0, S1 - CK)
Minimum Hold
Time
Parameter
V
(V)
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
CC
Test Condition
L
= 50 pF, Input t
Min.
6.2
31
37
T
A
r
Typ.
= 25°C
120
108
30
92
23
20
39
13
11
30
26
27
23
84
21
18
39
13
11
63
21
18
64
18
15
37
44
40
10
36
80
20
17
16
= t
8
7
9
9
9
8
4
3
f
= 6ns)
Max.
180
120
240
205
175
105
180
160
100
175
75
15
13
36
31
24
20
48
41
41
35
35
30
21
18
36
31
32
27
20
17
75
15
13
35
30
50
10
9
0
0
0
Value
Min.
-40 to 85°C
20
24
4
Max.
225
150
300
255
220
130
225
200
125
220
95
19
16
45
38
30
26
60
51
51
43
44
37
26
22
45
38
40
34
25
21
95
19
16
44
37
60
12
11
0
0
0
-55 to 125°C
Min.
3.4
17
20
Max.
110
270
180
360
310
265
160
270
240
150
110
265
22
19
54
46
36
31
72
61
61
53
53
45
32
27
54
46
48
41
30
26
22
19
53
45
75
15
13
0
0
0
MHz
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns