參數(shù)資料
型號: HD74SSTL16857
英文描述: Simulated Roller Lever
中文描述: 記憶體驅(qū)動
文件頁數(shù): 6/10頁
文件大小: 47K
代理商: HD74SSTL16857
HD74SSTL16857
6
Switching Characteristics
(C
L
= 10 pF, Class I, V
REF
= V
TT
= V
DDQ
×
0.5)
(C
L
= 30 pF, Class II, V
REF
= V
TT
= V
DDQ
×
0.5)
(C
L
= 50 pF, R
L
= 500 W, V
REF
= V
TT
= V
DDQ
×
0.5)
Item
Sym-
bol
V
CC
= 2.5
±
0.2 V V
CC
= 3.3
±
0.3 V Unit Test Condition
Min
Max
Min
Max
200
200
1.25
1.25
1.25
1.25
Clock frequency
Setup time
f
clock
t
su
MHz
ns
Data before CLK
, CLK
RESET high before CLK
,
CLK
Data after CLK
, CLK
CLK, CLK “H” or “L”
Hold time
Pulse width
t
h
t
w
0.75
2.0
0.75
2.0
ns
ns
Item
Sym-
bol
V
CC
= 2.5
±
0.2 V
V
CC
= 3.3
±
0.3
V
Unit
From
To
(Out-
put)
Min
200
1.5
Typ
2.5
Max
3.5
Min
200
1.5
Max
3.0
(Input)
Maximum clock frequency f
max
Propagation delay time
MHz
ns
t
PLH
,
t
PHL
t
PHL
CLK, CLK
Q
2.6
5.0
1.0
5.0
ns
RESET
Q
Item
Sym-
bol
V
CC
= 2.5
±
0.2 V
Min
200
1.5
V
CC
= 3.3
±
0.3
V
Min
200
1.5
Unit
From
(Input)
To
(Out-
put)
Typ
2.5
Max
3.5
Max
3.0
Maximum clock frequency f
max
Propagation delay time
MHz
ns
t
PLH
,
t
PHL
t
PHL
CLK, CLK
Q
2.6
5.0
1.0
5.0
ns
RESET
Q
Item
Sym-
bol
V
CC
= 2.5
±
0.2 V
Min
150
1.5
V
CC
= 3.3
±
0.3
V
Min
150
1.5
Unit
From
(Input)
To
(Out-
put)
Typ
3.8
Max
5.0
Max
4.5
Maximum clock frequency f
max
Propagation delay time
MHz
ns
t
PLH
,
t
PHL
t
PHL
CLK, CLK
Q
4.0
7.0
1.0
6.5
ns
RESET
Q
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