SN74ALS641A, SN74ALS642A, SN74AS641

OCTAL BUS TRANSCEIVERS

WITH OPENCOLLECTOR OUTPUTS

SDAS300 − MARCH 1995

6

POST OFFICE BOX 655303

POST OFFICE BOX 1443

switching characteristics (see Figure 1)

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

VCC = 4.5 V to 5.5 V,

CL = 50 pF,

TA = MIN to MAX†

UNIT

PARAMETER

(INPUT)

(OUTPUT)

SN74AS641

UNIT

MIN

MAX

tPLH

A or B

B or A

5

21

ns

tPHL

A or B

B or A

1

7.5

ns

tPLH

OE

A or B

5

21

ns

tPHL

OE

A or B

1

9

ns

tPLH

DIR

A or B

5

22

ns

tPHL

DIR

A or B

1

10

ns

† For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.