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參數(shù)資料
| 型號： | MM54C922 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 16-Key Encoder(16鍵編碼器) |
| 中文描述： | 16鍵編碼器（16鍵編碼器） |
| 文件頁數(shù)： | 3/10頁 |
| 文件大?。?/td> | 218K |
| 代理商： | MM54C922 |
DC Electrical Characteristics
Min/Max limits apply across temperature range unless otherwise specified (Continued)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
OUTPUT DRIVE (See 54C/74C Family Characteristics Data Sheet) (Short Circuit Current)
V
CC
e
5V, V
OUT
e
0V,
(P-Channel)
T
A
e
25
§
C
I
SOURCE
Output Source Current
V
CC
e
10V, V
OUT
e
0V,
(P-Channel)
T
A
e
25
§
C
I
SINK
Output Sink Current
V
CC
e
5V, V
OUT
e
V
CC
,
(N-Channel)
T
A
e
25
§
C
I
SINK
Output Sink Current
V
CC
e
10V, V
OUT
e
V
CC
,
(N-Channel)
T
A
e
25
§
C
I
SOURCE
Output Source Current
b
1.75
b
3.3
mA
b
8
b
15
mA
1.75
3.6
mA
8
16
mA
AC Electrical Characteristics
*
T
A
e
25
§
C, C
L
e
50 pF, unless otherwise noted
Symbol
Parameter
Conditions
Min
Typ
Max
Units
t
pd0
, t
pd1
Propagation Delay Time to
Logical ‘‘0’’ or Logical ‘‘1’’
from D.A.
C
L
e
50 pF(Figure 1)
V
CC
e
5V
V
CC
e
10V
V
CC
e
15V
R
L
e
10k, C
L
e
10 pF(Figure 2)
V
CC
e
5V, R
L
e
10k
V
CC
e
10V, C
L
e
10 pF
V
CC
e
15V
R
L
e
10k, C
L
e
50 pF(Figure 2)
V
CC
e
5V, R
L
e
10k
V
CC
e
10V, C
L
e
50 pF
V
CC
e
15V
Any Input (Note 2)
60
35
25
150
80
60
ns
ns
ns
t
0H
, t
1H
Propagation Delay Time from
Logical ‘‘0’’ or Logical ‘‘1’’
into High Impedance State
80
65
50
200
150
110
ns
ns
ns
t
H0
, t
H1
Propagation Delay Time from
High Impedance State to a
Logical ‘‘0’’ or Logical ‘‘1’’
100
55
40
250
125
90
ns
ns
ns
C
IN
C
OUT
*
AC Parameters are guaranteed by DC correlated testing.
Input Capacitance
5
7.5
pF
TRI-STATE Output Capacitance
Any Output (Note 2)
10
pF
Note 1:
‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot be guaranteed. Except for ‘‘Operating Temperature Range’’
they are not meant to imply that the devices should be operated at these limits. The table of ‘‘Electrical Characteristics’’ provides conditions for actual device
operation.
Note 2:
Capacitance is guaranteed by periodic testing.
Switching Time Waveforms
TL/F/6037–3
T1
&
T2
&
RC, T3
&
0.7 RC, where R
&
10k and C is external capacitor at KBM input.
FIGURE 1
TL/F/6037–4
FIGURE 2
3
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