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参数资料
| 型号： | MM74HCT191 |
| 厂商： | National Semiconductor Corporation |
| 英文描述： | Level changes on Enable or Down/Up can be made regardless of the level of the clock |
| 中文描述： | 水平变化启用或向下/向上，可无论在时钟的水平 |
| 文件页数： | 4/8页 |
| 文件大小： | 170K |
| 代理商： | MM74HCT191 |
AC Electrical Characteristics
V
CC
e
5V
g
10%, C
L
e
50 pF, t
r
e
t
f
e
6 ns unless otherwise specified
From
Input
To
T
A
e
25
§
C
74HCT
54HCT
Symbol
Parameter
Output
Conditions
T
A
eb
40
§
C to 85
§
C T
A
eb
55
§
C to 125
§
C Units
Typ
Guaranteed Limits
f
MAX
Maximum Clock
Frequency
28
20
16
13
MHz
t
PLH
, t
PHL
Maximum Propa-
gation Delay Time
Load
Q
A
, Q
B
Q
C
, Q
D
31
44
55
66
ns
t
PLH
, t
PHL
Maximum Propa-
gation Delay Time
Data A,
B, C, D
Q
A
, Q
B
Q
C
, Q
D
30
40
50
60
ns
t
PLH
, t
PHL
Maximum Propa-
gation Delay Time
Clock
Ripple
Clock
24
30
38
45
ns
t
PLH
, t
PHL
Maximum Propa-
gation Delay Time
Clock
Q
A
, Q
B
Q
C
, Q
D
32
43
54
65
ns
t
PLH
, t
PHL
Maximum Propa-
gation Delay Time
Clock
Max/Min
45
55
69
83
ns
t
PLH
, t
PHL
Maximum Propa-
gation Delay Time
Down/Up
Ripple
Clock
42
50
63
75
ns
t
PLH
, t
PHL
Maximum Propa-
gation Delay Time
Down/Up Max/Min
30
45
56
68
ns
t
PHL
, t
PLH
Propagation Delay
Time
Enable
Ripple
Clock
26
33
41
50
ns
t
W
Minimum Clock
Pulse Width
15
25
31
38
ns
t
S
Minimum Set-Up Time
Data
Load
10
20
25
30
ns
t
H
Minimum Hold Time
Load
Data
b
3
5
6
8
ns
t
S
Minimum Set-Up Time
Down/Up
Clock
23
30
38
45
ns
t
H
Minimum Hold Time
Clock
Down/Up
b
7
0
0
0
ns
t
S
Minimum Set-Up Time
Enable
Clock
13
20
25
30
ns
t
H
Minimum Hold Time
Clock
Enable
b
5
0
0
0
ns
t
THL
, t
TLH
Maximum Output
Rise and Fall Time
10
15
19
22
ns
C
IN
Maximum Input Capacitance
5
pF
C
PD
Power Dissipation
Capacitance (Note 5)
35
pF
Note 5:
C
PD
determines the no load dynamic power consumption, P
D
e
C
PD
V
CC2
f
a
I
CC
V
CC
, and the no load dynamic current consumption, I
S
e
C
PD
V
CC
f
a
I
CC
.
4
相关PDF资料 |
PDF描述 |
|---|---|
| MM54HCT193 | Lockwire |
| MM54HCT193J | SWITCH |
| MM74HCT193 | CLAMP |
| MM74HCT193J | CLAMP |
| MM74HCT193N | CLAMP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MM74HCT193 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Synchronous Binary Up/Down Counters |
| MM74HCT193J | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Synchronous Binary Up/Down Counters |
| MM74HCT193N | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Synchronous Binary Up/Down Counters |
| MM74HCT193WM | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| MM74HCT240 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Inverting Octal 3-STATE Buffer Octal 3-STATE Buffer |
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