hef4021b NXP Semiconductors, hef4021b Datasheet - Page 5

• Manufacturer Part Number: hef4021b
• Description: 8-bit Static Shift Register
• Manufacturer: NXP Semiconductors

Philips Semiconductors
AC CHARACTERISTICS
V
January 1995
Set-up time
Hold times
Minimum clock
Minimum PL
Recovery time
Maximum clock
Dynamic power
SS
8-bit static shift register
= 0 V; T
D
P
D
P
pulse width; LOW
pulse width; HIGH
for PL
pulse frequency
dissipation per
package (P)
n
n
S
S
PL
PL
CP
CP
amb
= 25 C; C
L
= 50 pF; input transition times
V
10
15
10
15
10
15
10
15
10
15
10
15
10
15
10
15
V
DD
5
5
5
5
5
5
5
5
V
10
15
V
DD
5
t
t
t
t
t
t
t
f
su
su
hold
hold
WCPL
WPLH
RPL
max
SYMBOL
TYPICAL FORMULA FOR P ( W)
12 000 f
4 300 f
MIN.
900 f
25
25
15
50
30
20
40
20
15
15
15
15
70
30
24
70
30
24
50
40
35
15
20
6
5
i
i
i
20 ns
TYP.
(f
(f
(f
o
o
o
15
10
25
10
20
10
10
35
15
12
35
15
12
10
13
30
40
C
C
C
5
5
8
0
0
5
5
L
L
L
)
)
)
V
V
V
MAX.
DD
DD
DD
2
2
2
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
MHz
MHz
MHz
where
f
f
C
V
i
o
DD
= input freq. (MHz)
L
= output freq. (MHz)
(f
= load capacitance (pF)
o
C
= supply voltage (V)
L
) = sum of outputs
see also waveforms
Figs 4 and 5
Product specification
HEF4021B
MSI