SN54AS250A, SN74AS250A

1-OF-16 DATA GENERATORS/MULTIPLEXERS

WITH 3-STATE OUTPUTS

SDAS137A – DECEMBER 1983 – REVISED DECEMBER 1994

5

POST OFFICE BOX 655303

switching characteristics (see Figure 1)

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

VCC = 4.5 V to 5.5 V,

CL = 50 pF,

R1 = 500

R2 = 500

TA = MIN to MAX†

UNIT

SN54AS250A

SN74AS250A

MIN

MAX

MIN

MAX

tPLH

Data

W

2

9.5

2

8

ns

tPHL

Data

W

2

8.5

2

7

ns

tPLH

ABCD

W

4

15.5

4

13

ns

tPHL

A, B, C, D

W

4

12

4

10.5

ns

tPZH

OE

W

2

7.5

2

7

ns

tPZL

OE

W

2

10

2

9

ns

tPHZ

OE

W

1.5

6.5

1.5

6

ns

tPLZ

OE

W

2

8.5

2

6.5

ns

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