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零件编号
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HD74HC78 查看數據表(PDF) - Renesas Electronics
零件编号
产品描述 (功能)
生产厂家
HD74HC78
Dual J-K Flip-Flops(with Preset, Common Clear and Common Clock)
Renesas Electronics
HD74HC78 Datasheet PDF : 9 Pages
1
2
3
4
5
6
7
8
9
HD74HC78
Waveforms
•
Waveform
−
1
t
r
t
f
90 %
t
w (L)
V
CC
Clock
50 % 50 %
50 % 50 %
10 %
t
w (H)
10 %
0V
t
TLH
t
THL
Q or
Q
Q
or Q
t
PLH
90 %
50 %
10 %
t
PHL
50 %
10 %
t
THL
90 %
50 %
t
PHL
t
PLH
50 %
10 %
10 %
90 %
t
TLH
V
OH
V
OL
V
OH
V
OL
•
Waveform
−
2
Clear
Preset
Q
Q
t
f
t
r
90 %
90 %
50 %
10 %
50 %
10 %
t
w(clear)
t
f
t
r
t
PHL
90 %
50 %
10 %
t
THL
t
PLH
50 %
10 %
90 %
90 %
50 %
10 %
t
w(preset)
t
PLH
90 %
50 %
50 %
t
PHL
50 %
t
TLH
V
CC
0V
V
CC
0V
V
OH
V
OL
V
OH
V
OL
Notes: 1. Input waveform: PRR
≤
1 MHz, Zo = 50
Ω
, t
r
≤
6 ns, t
f
≤
6 ns
2. The output are measured one at a time with one transition per measurement.
Rev.2.00, Oct 06, 2005 page 5 of 6
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