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)

7V

Input Voltage, V

−0.3V to V

Voltage Range at Any Bus Terminal

(AB)

−7V to 12V

Receiver Outputs

−0.3V to V

Package Thermal Impedance,

θ

JA

SOIC (Note 3)

125˚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

ESD Rating (Note 4) (Note 8)

8kV

ESD Rating (Note 4) (Note 9)

2kV

Soldering Information

Infrared or Convection (20 sec.)

235˚C

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

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

OD

Differential Output Voltage

R =

∞ (Figure 1)5

V

V

OD1

Differential Output Voltage

R = 50

Ω (Figure 1), RS-422

2

5

V

V

OD2

Differential Output Voltage

R = 27

Ω (Figure 1), RS-485

1.5

5

V

V

OD3

Differential Output Voltage

V

1.5

5

V

∆V

OD

Change in Magnitude of

Differential Output Voltage

R=27

Ω or 50Ω (Figure 1 ), (Note 7)

−0.2

0.2

V

V

OC

Common-Mode Output

Voltage

R=27

Ω or 50Ω (Figure 1), (Note 7)

3

V

∆V

OC

Change in Magnitude of

Common-Mode Output

Voltage

R=27

Ω or 50Ω (Figure 1), (Note 7)

−0.2

0.2

V

I

OSD

Short-Circuit Output Current

V

≤V

CM

≤+12V

−250

250

mA

V

≤V

CM

≤+12V

−250

250

V

INL

CMOS Input Logic Threshold

Low

DE, DI, RE

0.8

V

V

INH

CMOS Input Logic Threshold

High

DE, DI, RE

2V

I

IN

Logic Input Current

DE, DI

−1

1

µA

Receiver Section

V

TH

Differential Input Threshold

Voltage

−7V

≤ V

CM

≤ + 12V

−0.2

+0.2

V

∆V

TH

Input Hysteresis Voltage

(V

V

70

mV

R

IN

Input Resistance

−7V

≤ V

CM

≤ + 12V

12

k

Ω

I

IN

Input Current (A, B)

V

1

mA

V

−0.8

I

RE

Logic Enable Input Current

RE

−1

1

µA

V

OL

CMOS Low-Level Output

Voltage

I

0.4

V

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