ST485E

2/13

PIN CONFIGURATION

PIN DESCRIPTION

TRUTH TABLE (DRIVER)

X= Don’t Care; Z=High Impedance

TRUTH TABLE (RECEIVER)

X= Don’t Care; Z=High Impedance

ABSOLUTE MAXIMUM RATINGS

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is

not implied.

PlN N°

SYMBOL

NAME AND FUNCTION

1

RO

Receiver Output

2RE

Receiver Output Enable

3

DE

Driver Output Enable

4

DI

Driver Input

5

GND

Ground

6

A

Non-inverting Receiver Input and Non-inverting Driver Output

7

B

Inverting Receiver Input and Inverting Driver Output

8

Supply Voltage

INPUTS

OUTPUTS

RE

DE

DI

B

A

XH

H

L

H

XH

L

H

L

XLX

ZZ

INPUTS

OUTPUT

RE

DE

A-B

RO

LL

≥ +0.2V

H

LL

≤ -0.2V

L

L

L

INPUTS OPEN

H

HL

X

Z

Symbol

Parameter

Value

Unit

Supply Voltage

7V

Control Input Voltage (RE, DE)

V

Driver Input Voltage (DI)

V

Driver Output Voltage (A, B)

± 14

V

Receiver Input Voltage (A, B)

± 14

V

Receiver Output Voltage (RO)

V