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HD74LV574A Datasheet, PDF (11/15 Pages) Hitachi Semiconductor – Octal Edge-Triggered D-type Flip-Flops with 3-state Outputs
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HD74LV574A
• Waveform – 1
CLK
D
tr
tf
90%
90%
50% VCC 50% VCC
10%
10%
tr
tf
90%
90%
10%
tPLH
10%
50% VCC
tPHL
Q
• Waveform – 2
CLK
50% VCC
tr
tf
90%
90%
50% VCC 50% VCC
10%
tw
10%
tSU
th
50% VCC
D
50% VCC
50% VCC
• Waveform – 3
tf
90%
OE
50% VCC
10%
tZL
tr
10%
90%
50% VCC
tLZ
Waveform – A
Waveform – B
50% VCC
tZH
50% VCC
VOL + 0.3 V
tHZ
VOH – 0.3 V
VCC
0V
VCC
0V
VOH
VOL
VCC
0V
VCC
0V
VCC
0V
VCC
VOL
VOH
0V
Notes: 1. Input waveform: PRR ≤ 1 MHz, Zo = 50 Ω, tr ≤ 3 ns, tf ≤ 3 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 is measured one at a time with one transition per measurement.
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