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HD74HCT564 Datasheet, PDF (6/9 Pages) Hitachi Semiconductor – Octal D-type Flip-Flops (with 3-state outputs) | |||
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HD74HCT564, HD74HCT574
Waveforms
⢠Waveform â1
Input Clock
Input Data
Output Q
Output Q
tr
tf
10 %
tr
90 % 90 %
1.3 V
10 %
tf
90 %
90 %
10 %
tPLH
10 %
1.3 V
1.3 V
tPHL
1.3 V
VCC
0V
VCC
0V
VOH
VOL
⢠Waveform â2
tf
tr
Input OC
90 %
1.3 V
90 %
VCC
1.3 V
10 %
10 %
0V
tZL
tLZ
VOH
Waveform - A
1.3 V
10 %
tZH
tHZ
VOL
Waveform - B
50 %
90 %
VOH
VOL
Notes : 1. Input waveform : PRR ⤠1 MHz, duty cycle 50%, tr ⤠6 ns, tf ⤠6 ns
2. Waveformâ A is for an output with internal conditions such that the
output is low except when disabled by the output control.
3. Waveformâ 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 6 of 8
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