HD74LS368AP 参数 Datasheet PDF下载

HD74LS368A

Switching Characteristics

(V

CC

= 5 V, Ta = 25°C)

Item

Propagation delay time

Output enable time

Output disable time

Symbol

t

PLH

t

PHL

t

ZH

t

ZL

t

HZ

t

LZ

min.

—

—

—

—

—

—

typ.

7

12

18

28

—

—

max.

15

18

35

45

32

35

Unit

Condition

C

L

= 45 pF, R

L

= 667

Ω

ns

C

L

= 5 pF, R

L

= 667

Ω

Note: Refer to Test Circuit and Waveform of the Common Item "TTL Common Matter (Document No.: REJ27D0005-

0100)".

Rev.2.00, Feb.18.2005, page 3 of 5