HD74LVC74 Просмотр технического описания (PDF) - Hitachi -> Renesas Electronics

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HD74LVC74

Dual D-type Flip Flops with Preset and Clear

Hitachi -> Renesas Electronics 

Waveforms

HD74LVC74

tf

tr

Input CLR

90 % 90 %

Vref

Vref

10 % 10 %

tw

Input PR

trec

tf

tr

90 % 90 %

Vref

Vref

10 % 10 %

Input CK

tr

tf

tw (H) tw (L)

90 % 90 %

Vref

Vref Vref

10 % 10 %

Vref

Vref

tw

trec

VIH

GND

VIH

GND

VIH

Vref

GND

Input D

Output Q

ts (H)

90 %

Vref

10 %

tr

t PHL

Vref

t h (H) ts (L)

90 %

Vref

10 %

tf

t PLH

t h (L)

Vref

t PHL

Vref

t PLH

Vref

Vref

Vref

Output Q

t PLH

Vref

t PHL

Vref

t PLH

t PHL

Vref

Vref

VIH

GND

VOH

VOL

VOH

VOL

Notes:

Symbol

VCC = 2.7 V,

3.3±0.3 V

VCC = 5.0±0.5 V

VIH

2.7 V

VCC

Vref

1.5 V

50%VCC

1. tr = 2.5 ns, tf = 2.5 ns

2. Clock pulse input waveform : PRR = 10 MHz, duty cycle 50%

3. Data input waveform : PRR = 5 MHz, duty cycle 50%

7

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