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SN74LS299H 데이터 시트보기 (PDF) - ON Semiconductor
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SN74LS299H
8-Bit Shift/Storage Register with 3-State Outputs
ON Semiconductor
SN74LS299H Datasheet PDF : 8 Pages
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SN74LS299
AC CHARACTERISTICS
(T
A
= 25
°
C, V
CC
= 5.0 V)
Limits
Symbol
Parameter
Min Typ Max
f
MAX
Maximum Clock Frequency
25
35
t
PHL
Propagation Delay, Clock
t
PLH
to Q
0
or Q
7
26
39
22
33
t
PHL
Propagation Delay, Clear
to Q
0
or Q
7
27
40
t
PHL
Propagation Delay, Clock
t
PLH
to I/O
0
– I/O
7
26
39
17
25
Propagation Delay, Clear
t
PHL
to I/O
0
– I/O
7
26
40
t
PZH
t
PZL
Output Enable Time
13
21
19
30
t
PHZ
t
PLZ
Output Disable Time
10
15
10
15
Unit
MHz
ns
ns
ns
ns
ns
ns
AC SETUP REQUIREMENTS
(T
A
= 25
°
C, V
CC
= 5.0 V)
Limits
Symbol
Parameter
Min Typ Max Unit
t
W
Clock Pulse Width HIGH
25
ns
t
W
Clock Pulse Width LOW
13
ns
t
W
Clear Pulse Width LOW
20
ns
t
s
Data Setup Time
20
ns
t
s
Select Setup Time
35
ns
t
h
Data Hold Time
0
ns
t
h
Select Hold Time
10
ns
t
rec
Recovery Time
20
ns
Test Conditions
C
L
= 15 pF
C
L
= 45 pF,
R
L
= 667
Ω
C
L
= 5.0 pF
Test Conditions
V
CC
= 5.0 V
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