HD74LVC574A 查看數據表（PDF） - Renesas Electronics

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HD74LVC574A

Octal D-type Flip Flops with 3-state Outputs

Renesas Electronics 

HD74LVC574A

Waveforms – 2

Input CK

tr

tf

90 % 90 %

Vref

Vref

Vref

10 %

10 %

tw

tw

ts

th

Input D

Vref

Vref

VIH

GND

VIH

GND

Waveforms – 3

Input OC

tf

90 %

Vref

10 %

Waveform - A

Waveform - B

tZL

Vref

tZH

Vref

tr

90 %

Vref

10 %

tLZ

VIH

GND

≈VOH1

VOL + 0.3 V

tHZ

VOL

VOH – 0.3 V

VOH

TEST

VIH

Vref

VOH1

VOL1

≈VOL1

Vcc=2.7V,

3.3±0.3V

Vcc=5.0±0.5V

2.7 V

Vcc

1.5 V 50%Vcc

3V

Vcc

GND

GND

Notes:

1. tr = 2.5 ns, tf = 2.5 ns

2. Input waveform : PRR = 10 MHz, duty cycle 50%

3. Waveform – A shows input conditions such that the output is "L" level when enable by the

output control.

4. Waveform – B shows input conditions such that the output is "H" level when enable by the

output control.

Rev.4.00 Jul. 29, 2004 page 6 of 7

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