Datasheet
HEF4017B All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 8 — 18 November 2011 9 of 18
NXP Semiconductors
HEF4017B
5-stage Johnson decade counter
11. Waveforms
Table 8. Dynamic power dissipation P
D
P
D
can be calculated from the formulas shown. V
SS
= 0 V; t
r
= t
f
20 ns; T
amb
= 25
C.
Symbol Parameter V
DD
Typical formula for P
D
(W) where:
P
D
dynamic power
dissipation
5V P
D
= 500 f
i
+ (f
o
C
L
) V
DD
2
f
i
= input frequency in MHz;
f
o
= output frequency in MHz;
C
L
= output load capacitance in pF;
V
DD
= supply voltage in V;
(C
L
f
o
) = sum of the outputs.
10 V P
D
= 2200 f
i
+ (f
o
C
L
) V
DD
2
15 V P
D
= 6000 f
i
+ (f
o
C
L
) V
DD
2
Conditions: CP1 = LOW, while CP0 triggers on a LOW-to-HIGH transition. CP1 triggers on a HIGH-to-LOW transition;
The shaded areas indicate where the output state is set by the input count.
Measurement points given in Tabl e 9
.
Fig 7. Waveforms showing the propagation delays for CP0, CP1 to Qn, Q5-9 outputs and the output transition
times
CP0 input
V
I
V
SS
V
I
V
SS
V
OH
V
OL
V
OH
V
OL
Q1 - Q9
output
CP1 input
V
M
V
M
t
PLH
t
PHL
t
PLH
t
PHL
V
M
t
TLH
t
THL
V
M
001aaj305
Q0, Q5 - Q9
output