SN54ALS138A, SN54AS138, SN74ALS138A, SN74AS138

3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS

SDAS055E – APRIL 1982 – REVISED JULY 1996

6

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,

TA = MIN to MAX†

UNIT

(INPUT)

(OUTPUT)

SN54AS138

SN74AS138

MIN

MAX

MIN

MAX

tPLH

ABC

Any Y

2

11

2

10

ns

tPHL

A, B, C

Any Y

2

11

2

9.5

ns

tPLH

G1

Any Y

2

11.5

2

10

ns

tPHL

G1

Any Y

2

11

2

10

ns

tPLH

G2

Any Y

2

9

2

7.5

ns

tPHL

G2

Any Y

2

10

2

8.5

ns

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