參數(shù)資料
型號(hào): HEF4017BT
廠商: NXP Semiconductors N.V.
元件分類: 通用總線功能
英文描述: 5-stage Johnson decade counter
封裝: HEF4017BP<SOT38-4 (DIP16)|<<http://www.nxp.com/packages/SOT38-4.html<1<Always Pb-free,;HEF4017BT<SOT109-1 (SO16)|<<http://www.nxp.com/packages/SOT109-1.html<1<week
文件頁(yè)數(shù): 9/18頁(yè)
文件大?。?/td> 172K
代理商: HEF4017BT
HEF4017B
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 7 — 14 September 2011
9 of 18
NXP Semiconductors
HEF4017B
5-stage Johnson decade counter
12. Waveforms
Table 8.
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)
P
D
dynamic power
dissipation
10 V
P
D
= 2200
f
i
+
(f
o
C
L
)
V
DD2
15 V
P
D
= 6000
f
i
+
(f
o
C
L
)
V
DD2
Dynamic power dissipation P
D
where:
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.
5 V
P
D
= 500
f
i
+
(f
o
C
L
)
V
DD2
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
Table 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
001aaj305
V
M
Q0, Q5 - Q9
output
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