SN55ALS161, SN75ALS161

OCTAL GENERAL-PURPOSE INTERFACE BUS TRANSCEIVERS

SLLS019E – JUNE 1986 – REVISED NOVEMBER 1999

9

POST OFFICE BOX 655303

SN75ALS161 switching characteristics over recommended operating free-air temperature range,

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

TEST

CONDITIONS

MIN

TYP†

MAX

UNIT

tPLH

Propagation delay time,

low- to high-level output

Terminal

Bus

CL = 30 pF,

10

20

ns

tPHL

Propagation delay time,

high- to low-level output

Terminal

Bus

L

See Figure 1

12

20

ns

tPLH

Propagation delay time,

low- to high-level output

Bus

Terminal

CL = 30 pF,

5

10

ns

tPHL

Propagation delay time,

high- to low-level output

Bus

Terminal

L

,

See Figure 2

7

14

ns

tPZH

Output enable time to high level

30

tPHZ

Output disable time from high level

TE or DC

Bus (ATN, EOI,

REN IFC and

CL = 15 pF,

20

ns

tPZL

Output enable time to low level

TE or DC

REN, IFC, and

DAV)

L

,

See Figure 3

45

ns

tPLZ

Output disable time from low level

DAV)

20

tPZH

Output enable time to high level

30

tPHZ

Output disable time from high level

TE or DC

Terminal

CL = 15 pF,

25

ns

tPZL

Output enable time to low level

TE or DC

Terminal

L

See Figure 4

30

ns

tPLZ

Output disable time from low level

25

† All typical values are at TA = 25°C.