參數資料
型號: 74F161A
廠商: National Semiconductor Corporation
元件分類: 通用總線功能
英文描述: Synchronous Presettable Binary Counter(同步可預置的二進制計數器)
中文描述: 同步可預置二進制計數器(同步可預置的二進制計數器)
文件頁數: 6/10頁
文件大?。?/td> 197K
代理商: 74F161A
AC Electrical Characteristics
74F
54F
74F
T
A
e a
25
§
C
V
CC
e a
5.0V
C
L
e
50 pF
T
A
, V
CC
e
Mil
C
L
e
50 pF
T
A
, V
CC
e
Com
C
L
e
50 pF
Symbol
Parameter
Units
Min
Typ
Max
Min
Max
Min
Max
f
max
Maximum Count Frequency
100
120
75
90
MHz
t
PLH
t
PHL
Propagation Delay
CP to Q
n
(PE Input HIGH)
3.5
3.5
5.5
7.5
7.5
10.0
3.5
3.5
9.0
11.5
3.5
3.5
8.5
11.0
ns
t
PLH
t
PHL
Propagation Delay
CP to Q
n
(PE Input LOW)
4.0
4.0
6.0
6.0
8.5
8.5
4.0
4.0
10.0
10.0
4.0
4.0
9.5
9.5
t
PLH
t
PHL
Propagation Delay
CP to TC
5.0
5.0
10.0
10.0
14.0
14.0
5.0
5.0
16.5
15.5
5.0
5.0
15.0
15.0
ns
t
PLH
t
PHL
Propagation Delay
CET to TC
2.5
2.5
4.5
4.5
7.5
7.5
2.5
2.5
9.0
9.0
2.5
2.5
8.5
8.5
ns
t
PHL
Propagation Delay
MR to Q
n
(’F161A)
5.5
9.0
12.0
5.5
14.0
5.5
13.0
ns
t
PHL
Propagation Delay
MR to TC (’F161A)
4.5
8.0
10.5
4.5
12.5
4.5
11.5
ns
AC Operating Requirements
74F
54F
74F
Symbol
Parameter
T
A
e a
25
§
C
V
CC
e a
5.0V
T
A
, V
CC
e
Mil
T
A
, V
CC
e
Com
Units
Min
Max
Min
Max
Min
Max
t
s
(H)
t
s
(L)
Setup Time, HIGH or LOW
P
n
to CP
5.0
5.0
5.5
5.5
5.0
5.0
ns
t
h
(H)
t
h
(L)
Hold Time, HIGH or LOW
P
n
to CP
2.0
2.0
2.5
2.5
2.0
2.0
t
s
(H)
t
s
(L)
Setup Time, HIGH or LOW
PE or SR to CP
11.0
8.5
13.5
10.5
11.5
9.5
ns
t
h
(H)
t
h
(L)
Hold Time, HIGH or LOW
PE or SR to CP
2.0
0
3.6
0
2.0
0
t
s
(H)
t
s
(L)
Setup Time, HIGH or LOW
CEP or CET to CP
11.0
5.0
13.0
6.0
11.5
5.0
ns
t
h
(H)
t
h
(L)
Hold Time, HIGH or LOW
CEP or CET to CP
0
0
0
0
0
0
t
w
(H)
t
w
(L)
Clock Pulse Width (Load)
HIGH or LOW
5.0
5.0
5.0
5.0
5.0
5.0
ns
t
w
(H)
t
w
(L)
Clock Pulse Width (Count)
HIGH or LOW
4.0
6.0
5.0
8.0
4.0
7.0
ns
t
w
(L)
MR Pulse Width, LOW
(’F161A)
5.0
5.0
5.0
ns
t
rec
Recovery Time
MR to CP (’F161A)
6.0
6.0
6.0
ns
6
相關PDF資料
PDF描述
74F161ASC Synchronous Presettable Binary Counter
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74F163APC Synchronous Presettable Binary Counter
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