HD74LV74 查看數據表（PDF） - Hitachi -> Renesas Electronics

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HD74LV74

Dual D–type Flip Flops with Preset and Clear

Hitachi -> Renesas Electronics 

HD74LV74A

Switching Characteristics (cont)

• VCC = 5.0 ± 0.5 V

Item

Maximum

clock

frequency

Symbol

tmax

Propagation tPLH

delay time

tPHL

Setup time

tsu

Hold time

th

Pulse width tw

Ta = 25°C

Min Typ

130 180

90 140

— 5.0

— 5.6

— 6.6

— 7.2

5.0 —

3.0 —

0.5 —

5.0 —

5.0 —

Ta = –40 to 85°C

Max Min Max

— 110

—

Unit

MHz

— 75

—

7.7 1.0

9.0

ns

7.3 1.0

8.5

9.7 1.0

11.0

9.3 1.0

10.5

— 5.0

—

ns

— 3.0

—

— 0.5

—

ns

— 5.0

—

ns

— 5.0

—

Test Conditions

CL = 15 pF

FROM

(Input)

TO

(Output)

CL = 50 pF

CL = 15 pF

CL = 50 pF

PRE/CLR Q or Q

CLK

PRE/CLR Q or Q

CLK

Data

PRE or CLR inactive

PRE or CLR “L”

CLK “H” or “L”

9

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