HD74HC4020_15 Datasheet, PDF (7/9 Pages) Renesas Technology Corp – 14-stage Binary Counter

HD74HC4020
Waveforms
• Waveform – 1
Reset
Clock
Q₁
tf
90%
10%
tf
tf
90%
50% 50%
tw
10%
tw
tPLH
10%
90%
50%
tTLH
90%
50% 50%
10%
tPHL
90%
50%
10%
tTHL
Note : 1. Waveform : PRR ≤ 1 MHz, Zo = 50 Ω, t_r ≤ 6 ns, t_f ≤ 6 ns
• Waveform – 2
Reset
tr
tf
10%
90%
50%
90%
50%
10%
tw
trem
Clock
tPHL
90%
50%
10%
Any Q
90%
50%
10%
tTHL
Note : 1. Waveform : PRR ≤ 1 MHz, Zo = 50 Ω, t_r ≤ 6 ns, t_f ≤ 6 ns
V_CC
0V
V_CC
0V
V_OH
V_OL
V_CC
0V
V_CC
0V
V_OH
V_OL
Rev.2.00 Mar 30, 2006 page 5 of 6