SN54ALS244B, 2N74ALS244B

OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS

SDAS142 – D2661, DECEMBER 1982 – REVISED JULY 1987

POST OFFICE BOX 655303

3

switching characteristics (see Note 1)

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

VCC = 4.5 V to 5.5 V,

CL = 50 pF,

R1 = 500

Ω,

R2 = 500

Ω,

TA = MIN to MAX†

UNIT

SN54AS244

SN74AS244

MIN

MAX

MIN

MAX

tPLH

A

Y

1

16

3

10

ns

tPHL

A

Y

3

12

3

10

ns

tPZH

G

Y

1

26

3

20

ns

tPZL

G

Y

1

24

3

20

ns

tPHZ

G

Y

2

10

3

10

ns

tPLZ

G

Y

1

26

3

13

ns

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

NOTE 1: Load circuit and voltage waveforms are shown in Section 1 of the

ALS/AS Logic Data Book, 1986.