HD74HC74(2008) 데이터 시트보기 (PDF) - Renesas Electronics
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HD74HC74 Datasheet PDF : 10 Pages
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HD74HC74
Waveforms
• Waveform − 1
Clock
D
tr
tf
10 %
90 %
50 % 50 %
tw(H)
50 %
10 %
tw(L)
tTLH
tTHL
90 %
90 %
Q
50 %
50 %
10 %
10 %
tPLH
tPHL
tPHL
tPLH
90 %
90 %
Q
50 %
50 %
10 %
10 %
tTHL
tTLH
• Waveform − 2
tf
tr
Clear
Preset
Q
90 %
50 %
10 %
tw
tPHL
90 %
50 %
10 %
tf
50 %
10 %
tw
tPLH
tr
90 %
50 %
10 %
50 %
50 %
tPLH
tPHL
Q
50 %
50 %
VCC
0V
VCC
0V
VOH
VOL
VOH
VOL
VCC
0V
VCC
0V
VOH
VOL
VOH
VOL
Notes: 1. Input waveform: PRR ≤ 1 MHz, Zo = 50 Ω, tr ≤ 6 ns, tf ≤ 6 ns
2. The output are measured one at a time with one transition per measurement.
REJ03D0549-0300 Rev.3.00 Oct 27, 2008
Page 5 of 7
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