HD74LV74A 查看數據表（PDF） - Hitachi -> Renesas Electronics

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HD74LV74A

Dual D–type Flip Flops with Preset and Clear

Hitachi -> Renesas Electronics 

HD74LV74A

Switching Characteristics

• VCC = 2.5 ± 0.2 V

Item

Maximum

clock

frequency

Symbol

tmax

Propagation tPLH

delay time

tPHL

Setup time

tsu

Hold time

th

Pulse width tw

Ta = 25°C

Ta = –40 to 85°C

Min Typ Max Min Max

50 100 — 40

—

Unit

MHz

30 70 — 25

—

— 9.8 14.8 1.0

17.0

ns

— 11.1 16.4 1.0

19.0

— 13.0 17.4 1.0

20.0

— 14.2 20.0 1.0

23.0

8.0 — — 9.0

—

ns

7.0 — — 7.0

—

0.5 — — 0.5

—

ns

8.0 — — 9.0

—

ns

8.0 — — 9.0

—

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”

7

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