HD74HC221 Datasheet, PDF (5/8 Pages) Hitachi Semiconductor – Dual Monostable Multivibrators (with Schmitt Trigger Input)

HD74HC221
Waveforms
• Waveform-1
Input A
Input B
Input CLR
t_f
90 %
50 %
10 %
t_r
10 %
90 %
50 %
t_r
t_f
t_r
10 %
90 %
50 %
90 %
50 %
10 %
t_PLH (trigger)
t_w (L)
t_PHL
90 %
50 %
10 %
Output Q
50 %
t_PHL (trigger)
50 %
t_PLH
Output Q
50 %
50 %
V_CC
GND
V_CC
GND
V_CC
GND
V_OH
V_OL
V_OH
V_OL
Notes : 1. Input pulse : 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 Jan 31, 2006 page 5 of 7