7

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com

SP486_487_00_066

The

SP486 and SP487 are low power quad

differential line drivers meeting RS-485 and

RS-422 standards. The SP486 features

active high and active low common driver

enable controls; the SP487 provides inde-

pendent, active high driver enable controls

for each pair of drivers. The driver outputs

are short-circuit limited to 200mA. Data rates

up to 0Mbps are supported. The SP486

and SP487 are available in a 6-pin SOIC

package.

INPUT

ENABLES

OUTPUTS

DI

EN

EN

OUTA

OUTB

H

H

X

H

L

L

H

X

L

H

H

X

L

H

L

L

X

L

L

H

X

L

H

Hi-Z

Hi-Z

INPUT

ENABLES

OUTPUTS

DI

EN

OUTA OUTB

H

H

H

L

L

H

L

H

X

L

Hi-Z

Hi-Z

DESCRIPTION

Table . SP486 Truth Table

Table 2. SP487 Truth Table