HD74HC137P 查看數據表（PDF） - Renesas Electronics
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HD74HC137P Datasheet PDF : 10 Pages
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HD74HC137
Waveforms
• Waveform – 1
6ns
6ns
Input
A,B,C
90%
10%
90%
50%
10%
tW
tPLH
90% 90%
50%
10% 10%
tW
tPHL
Output Y
10%
90%
50%
90%
50%
10%
tTLH
tTHL
VCC
0V
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.
• Waveform – 2
6ns
G2
90%
50%
10%
6ns
10%
90%
50%
Output Y
tPHL
90%
50%
10%
tTHL
tPLH
10%
90%
50%
tTLH
VCC
0V
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.
• Waveform – 3
6ns
G1
90%
50%
10%
6ns
90%
50%
10%
Output Y
tPHL
90%
50%
10%
tTHL
tPLH
10%
90%
50%
tTLH
VCC
0V
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.
Rev.2.00, Oct 11, 2005 page 6 of 9
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