HD74HC590 Datasheet, PDF (8/10 Pages) Hitachi Semiconductor – 8-bit Binary Counter/Register (with 3-state outputs)

HD74HC590
• Waveform – 5 (CCK to RCK)
t_r
t_f
Input CCK
90 %
50 %
90 %
V_CC
50 %
10 %
10 %
0V
t_su
t_h
90 %
V_CC
Input RCK
50 %
50 %
10 %
10 %
0V
t_r
t_f
Note : 1. Input waveform : PRR ≤ 1 MHz, duty cycle 50%, t_r ≤ 6 ns, t_f ≤ 6 ns
• Waveform – 6 (t_ZL, t_ZH, t_LZ, t_HZ)
t_f
Input G
90 %
50 %
10 %
t_ZL
Waveform - A
50 %
t_ZH
Waveform - B
50 %
t_r
10 %
90 %
50 %
t_LZ
10 %
t_HZ
90 %
V_CC
0V
V_OH
V_OL
V_OH
V_OL
Notes : 1. Input waveform : PRR ≤ 1 MHz, duty cycle 50%, t_r ≤ 6 ns, t_f ≤ 6 ns
2. Waveform - A is for an output with internal conditions such that the
output is low except when disabled by the output control.
3. Waveform - B is for an output with internal conditions such that the
output is high except when disabled by the output control.
4. The output are measured one at a time with one transition per measurement.
Rev.2.00 Mar 30, 2006 page 8 of 9