參數(shù)資料
型號: HEF4021BD
廠商: NXP SEMICONDUCTORS
元件分類: 通用總線功能
英文描述: 8-bit static shift register
中文描述: 4000/14000/40000 SERIES, 8-BIT RIGHT PARALLEL IN SERIAL OUT SHIFT REGISTER, TRUE OUTPUT, CDIP16
封裝: CERDIP-16
文件頁數(shù): 5/6頁
文件大小: 70K
代理商: HEF4021BD
January 1995
5
Philips Semiconductors
Product specification
8-bit static shift register
HEF4021B
MSI
AC CHARACTERISTICS
V
SS
= 0 V; T
amb
= 25
°
C; C
L
= 50 pF; input transition times
20 ns
V
DD
V
SYMBOL
MIN.
TYP.
MAX.
Set-up time
D
S
CP
5
25
25
15
50
30
20
40
20
15
15
15
15
70
30
24
70
30
24
50
40
35
15
10
5
25
10
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
MHz
MHz
MHz
see also waveforms
Figs 4 and 5
10
15
t
su
5
P
n
PL
10
15
5
10
15
5
10
15
t
su
5
Hold times
D
S
CP
20
10
t
hold
8
10
P
n
PL
t
hold
0
0
Minimum clock
pulse width; LOW
5
35
15
12
35
15
12
10
5
5
13
30
40
10
15
t
WCPL
Minimum PL
pulse width; HIGH
5
10
15
t
WPLH
Recovery time
for PL
5
10
15
t
RPL
Maximum clock
pulse frequency
5
6
10
15
f
max
15
20
V
DD
V
TYPICAL FORMULA FOR P (
μ
W)
Dynamic power
dissipation per
package (P)
5
900 f
i
+ ∑
(f
o
C
L
)
×
V
DD2
4 300 f
i
+ ∑
(f
o
C
L
)
×
V
DD2
12 000 f
i
+ ∑
(f
o
C
L
)
×
V
DD2
where
f
i
= input freq. (MHz)
f
o
= output freq. (MHz)
C
L
= load capacitance (pF)
(f
o
C
L
) = sum of outputs
V
DD
= supply voltage (V)
10
15
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