HD74LV161A 查看數據表（PDF） - Hitachi -> Renesas Electronics

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HD74LV161A

Synchronous 4-bit Binary Counter (Direct Clear)

Hitachi -> Renesas Electronics 

HD74LV161A

Switching Characteristics (cont)

• VCC = 3.3 ± 0.3 V

Ta = 25°C

Ta = –40 to 85°C

Item

Symbol Min Typ Max Min

Maximum fmax 80 130 — 70

clock

frequency

55 85 — 50

Propa-

gation

tPLH/tPHL —

delay time

8.3 12.8 1.0

— 10.8 16.3 1.0

tPLH/tPHL —

Count —

mode

8.7 13.6 1.0

11.2 17.1 1.0

tPLH/tPHL —

Load

—

mode

11.0 17.2 1.0

13.5 20.7 1.0

tPLH/tPHL —

—

7.5 12.3 1.0

10.5 15.8 1.0

tPHL

— 8.9 13.6 1.0

— 11.2 17.1 1.0

tPHL

— 8.4 13.2 1.0

— 10.9 16.7 1.0

Setup time tsu

5.5 — — 6.5

8.0 — — 9.5

7.5 — — 9.0

Max

—

—

15.0

18.5

16.0

19.5

20.0

23.5

14.5

18.0

16.0

19.5

15.5

19.0

—

—

—

Unit

MHz

ns

ns

2.5 — — 2.5

—

Hold time th

Pulse

tw

width

1.0 — — 1.0

—

ns

5.0 — — 5.0

—

ns

5.0 — — 5.0

—

Test Conditions

CL = 15 pF

CL = 50 pF

CL = 15 pF

CL = 50 pF

CL = 15 pF

CL = 50 pF

CL = 15 pF

CL = 50 pF

CL = 15 pF

CL = 50 pF

CL = 15 pF

CL = 50 pF

CL = 15 pF

CL = 50 pF

FROM

(Input)

TO

(Output)

CLK

Q

CLK

Carry

CLK

Carry

ENT

Carry

CLR

Q

CLR

Carry

Data before CLK ↑

LOAD before CLK ↑

ENT, ENP before CLK

↑

CLR inactive before

CLK ↑

CLK H or L

CLR L

9

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