HD74HC279 데이터 시트보기 (PDF) - Renesas Electronics
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HD74HC279 Datasheet PDF : 6 Pages
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HD74HC279
Test Circuit
Measurement point
CL*
Waveforms
Note: CL includes the probe and fig capacitance.
• Waveform
tr
tf
90% 90%
S
50%
10%
50%
10%
tr
90%
R
10%
tf
90%
50%
10%
tPHL
tPLH
tPHL
90%
90%
Q
50%
50%
50%
10% 10%
tTHL
tTLH
Note : 1. Input pulse : PRR ≤ 1 MHz, Zo = 50 Ω, tr ≤ 6 ns, tf ≤ 6 ns
VCC
0V
VCC
0V
VOH
VOL
Rev.2.00 Jan 31, 2006 page 4 of 5
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