3

Absolute Maximum Ratings

Thermal Information

Input Voltages

DI, DE, RE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7V

Input / Output Voltages

A/Y, B/Z . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -8V to +12.5V

Short Circuit Duration

Y, Z . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous

Operating Conditions

Temperature Range

Thermal Resistance (Typical, Note 1)

θ

8 Ld SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . .

105

8 Ld MSOP Package . . . . . . . . . . . . . . . . . . . . . . . .

140

(Lead Tips Only)

CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the

device at these or any other conditions above those indicated in the operational sections of this specification is not implied.

NOTE:

1.

Electrical Specifications

Note 2

PARAMETER

SYMBOL

TEST CONDITIONS

TEMP

MIN

TYP

MAX

UNITS

DC CHARACTERISTICS

Full

-

-

V

R = 50

Ω (RS-422) (Figure 1A)

Full

2.5

3

-

V

R = 27

Ω (RS-485) (Figure 1A)

Full

2

2.5

5

V

Full

1.5

-

-

V

Change in Magnitude of Driver

Complementary Output States

R = 27

Ω or 50Ω (Figure 1A)

Full

-

0.01

0.2

V

R = 27

Ω or 50Ω (Figure 1A)

Full

-

-

3

V

Change in Magnitude of Driver

Complementary Output States

R = 27

Ω or 50Ω (Figure 1A)

Full

-

0.01

0.2

V

Logic Input High Voltage

DE, DI, RE

Full

2

-

-

V

Logic Input Low Voltage

DE, DI, RE

Full

-

-

0.8

V

Logic Input Current

DE, DI, RE

Full

-1

-

1

µA

Input Current (A/Y, B/Z) (Note 5)

4.5 to 5.5V

Full

-

-

1

mA

Full

-0.8

-

-

mA

Receiver Differential Threshold

Voltage

-7V

≤ V

Full

-0.2

-

0.2

V

Receiver Input Hysteresis

25

-

40

-

mV

Receiver Output High Voltage

Full

4

-

-

V

Receiver Output Low Voltage

Full

-

-

0.4

V

Three-State (high impedance)

Receiver Output Current

0.4V

Full

-

-

±1

µA

Receiver Input Resistance

-7V

Full

12

-

-

k

Ω

No-Load Supply Current, Note 3

Full

-

1

2.2

mA

DE = 0V

Full

-

0.8

1

mA

Driver Short-Circuit Current,

Full

60

-

250

mA

ISL81485