Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

Supply Voltage, V

CC (Note 2)

6V

Input Voltage, V

−0.3V to V

Voltage Range at Bus Terminals (AB)

−7V to 12V

Receiver Output

−0.3V to V

Package Thermal Impedance,

θ

JA

SOIC

125˚ C/W

DIP

92˚ C/W

Junction Temperature (Note 3)

150˚C

Operating Free-Air Temperature

Range, T

A

Commercial

0˚C to 70˚C

Industrial

−40˚C to 85˚C

Storage Temperature Range

−65˚C to 150˚C

Soldering Information

Infrared or Convection (20 sec.)

235˚C

Lead Temperature Range

+260˚C

ESD Rating (Human Body Model)(Note 4)

Bus Pins

15kV

Other Pins

2kV

ESD Rating (Machine Model)

All Pins

200V

Operating Ratings

Min Nom Max

Supply Voltage, V

CC

4.75

5.0

5.25

V

Voltage at any Bus Terminal

(Separately or Common Mode)

−7

12

V

High-Level Input Voltage, V

IH

(Note 5)

2V

Low-Level Input Voltage, V

IL

(Note 5)

0.8

V

Differential Input Voltage, V

ID

(Note 6)

V

Electrical Characteristics

Over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)

Symbol

Parameter

Conditions

Min

Typ

Max

Units

Driver Section

|V

Differential Output Voltage

R =

∞ (Figure 1)

5.25

V

|V

Differential Output Voltage

R = 50

Ω (Figure 1) , RS-422

2.0

V

R=27

Ω (Figure 1) , RS-485

1.5

5.0

∆V

OD

Change in Magnitude of

Driver Differential Output

Voltage for Complementary

Output States

R=27

Ω or 50Ω (Figure 1) , (Note 7)

0.2

V

V

OC

Common Mode Output

Voltage

R=27

Ω or 50Ω (Figure 1)

3.0

V

∆V

OC

Change in Magnitude of

Driver Common-Mode Output

Voltage for Complementary

Output States

R=27

Ω or 50Ω (Figure 1), (Note 7)

0.2

V

V

IH

CMOS Input Logic Threshold

High

DE, DI, RE

2.0

V

V

IL

CMOS Input Logic Threshold

Low

DE, DI, RE

0.8

V

I

IN1

Logic Input Current

DE, DI, RE

Receiver Section

I

IN2

Input Current (A, B)

DE = 0V, V

V

0.25

mA

V

−0.2

V

TH

Differential Input Threshold

Voltage

−7V

≤ V

CM

≤ + 12V

−0.2

+0.2

V

∆V

TH

Input Hysteresis

(V

V

95

mV

V

OH

CMOS High-level Output

Voltage

I

3.5

V

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