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M74HC191 数据表(PDF) 7 Page - STMicroelectronics

部件名 M74HC191
功能描述  4 BIT SYNCHRONOUS UP/DOWN COUNTERS
PDF  14 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

M74HC191 数据表(HTML) 7 Page - STMicroelectronics

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DC SPECIFICATIONS
Symbol
Parameter
Test Conditions
Value
Unit
VCC
(V)
TA =25
oC
54HC and 74HC
-40 to 85
oC
74HC
-55 to 125
oC
54HC
Min.
Typ.
Max.
Min.
Max.
Min.
Max.
VIH
High Level Input
Voltage
2.0
1.5
1.5
1.5
V
4.5
3.15
3.15
3.15
6.0
4.2
4.2
4.2
VIL
Low Level Input
Voltage
2.0
0.5
0.5
0.5
V
4.5
1.35
1.35
1.35
6.0
1.8
1.8
1.8
VOH
High Level
Output Voltage
2.0
VI =
VIH
or
VIL
IO=-20
µA
1.9
2.0
1.9
1.9
V
4.5
4.4
4.5
4.4
4.4
6.0
5.9
6.0
5.9
5.9
4.5
IO=-4.0 mA
4.18
4.31
4.13
4.10
6.0
IO=-5.2 mA
5.68
5.8
5.63
5.60
VOL
Low Level Output
Voltage
2.0
VI =
VIH
or
VIL
IO=20
µA
0.0
0.1
0.1
0.1
V
4.5
0.0
0.1
0.1
0.1
6.0
0.0
0.1
0.1
0.1
4.5
IO= 4.0 mA
0.17
0.26
0.33
0.40
6.0
IO= 5.2 mA
0.18
0.26
0.33
0.40
II
Input Leakage
Current
6.0
VI =VCC or GND
±0.1
±1
±1
µA
ICC
Quiescent Supply
Current
6.0
VI =VCC or GND
4
40
80
µA
AC ELECTRICAL CHARACTERISTICS (CL =50 pF, Input tr =tf =6 ns)
Symbol
Parameter
Test Conditions
Value
Unit
VCC
(V)
TA =25
oC
54HC and 74HC
-40 to 85
oC
74HC
-55 to 125
oC
54HC
Min.
Typ.
Max.
Min.
Max.
Min.
Max.
tTLH
tTHL
Output Transition
Time
2.0
30
75
95
110
ns
4.5
8
151922
6.0
7
131619
tPLH
tPHL
Propagation
Delay Time
(CLOCK - Q)
2.0
92
180
225
270
ns
4.5
23
36
45
54
6.0
20
31
38
46
tPLH
tPHL
Propagation
Delay Time
(CLOCK - RCO)
2.0
39
120
150
180
ns
4.5
13
24
30
36
6.0
11
20
26
31
tPLH
tPHL
Propagation Delay
Time (CLOCK -
MAX/MIN)
2.0
120
240
300
360
ns
4.5
30
48
60
72
6.0
26
41
51
61
tPLH
tPHL
Propagation
Delay Time
(LOAD - Q)
2.0
108
205
255
310
ns
4.5
27
41
51
62
6.0
23
35
43
53
M54/M74HC190/191
7/14



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