Philips Semiconductors
Product specification
Dual D-type flip-flop
AC CHARACTERISTI CS
V
SS
= 0 V; T
amb
= 25
°C;
C
L
= 50 pF; input transition times
≤
20 ns
V
DD
V
Set-up time
D
→
CP
Hold time
D
→
CP
Minimum clock
pulse width; LOW
Minimum S
D
pulse
width; HIGH
Minimum C
D
pulse
width; HIGH
Recovery time
for S
D
Recovery time
for C
D
Maximum clock
pulse frequency
5
10
15
5
10
15
5
10
15
5
10
15
5
10
15
5
10
15
5
10
15
5
10
15
f
max
t
RCD
t
RSD
t
WCDH
t
WSDH
t
WCPL
t
hold
t
su
SYMBOL
MIN.
40
25
15
20
20
15
60
30
20
50
24
20
50
24
20
15
15
15
40
25
25
7
14
20
TYP.
20
10
5
0
0
0
30
15
10
25
12
10
25
12
10
−5
0
0
25
10
10
14
28
40
MAX.
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
MHz
MHz
MHz
HEF4013B
flip-flops
see also waveforms
Figs 4 and 5
V
DD
V
Dynamic power
dissipation per
package (P)
5
10
15
TYPICAL FORMULA FOR P (µW)
850 f
i
+ ∑
(f
o
C
L
)
×
V
DD 2
3 600 f
i
+ ∑
(f
o
C
L
)
×
V
DD 2
9 000 f
i
+ ∑
(f
o
C
L
)
×
V
DD 2
where
f
i
= input freq. (MHz)
f
o
= output freq. (MHz)
C
L
= total load cap. (pF)
∑
(f
o
C
L
) = sum of outputs
V
DD
= supply voltage (V)
January 1995
5
PHILIPS [ NXP SEMICONDUCTORS ]
