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

7V

Control Input Voltage

V

Driver Input Voltage

V

Driver Output Voltage/Receiver

Input Voltage

−10V to +15V

Receiver Output Voltage

5.5V

25˚C

V Package

1.73W

Derate V Package 13.9 mW/˚C above 25˚C

Storage Temp. Range

−65˚C to +150˚C

Lead Temp. (Soldering 4 Sec.)

260˚C

Recommended Operating

Conditions

Supply Voltage, V

CC

4.75V to 5.25V

Bus Voltage

−7V to +12V

Operating Free Air Temp. (T

0˚C to +70˚C

Electrical Characteristics (Note 2)

Over Supply Voltage and Operating Temperature ranges, unless otherwise specified

Symbol

Parameter

Conditions

Min

Typ

Max

Units

DRIVER CHARACTERISTICS

V

ODL

Differential Driver Output

I

1.5

1.9

V

Voltage (Full Load)

V

V

OD

Differential Driver Output

R

Ω (EIA-422)

2.0

3.5

V

Voltage (Termination Load)

R

Ω (EIA-485)

1.5

3.2

V

∆IV

Change in Magnitude of Driver

R

Ω or 100Ω

Differential Output Voltage for

(Note 4) (Figure 1)

0.2

V

Complementary Output States

(EIA-485)

V

OC

Driver Common Mode Output

R

Ω

3.0

V

Voltage (Note 5)

(Figure 1) (EIA-485)

∆IV

Change in Magnitude of Common

(Note 4) (Figure 1)

0.2

V

Mode Output Voltage

(EIA-485)

V

OH

Output Voltage HIGH

I

2.7

3.2

V

V

OL

Output Voltage LOW

I

1.4

1.7

V

V

IH

Input Voltage HIGH

2.0

V

V

IL

Input Voltage LOW

0.8

V

V

CL

Input Clamp Voltage

I = −18 mA

−1.5

V

I

IH

Input High Current

V

20

µA

I

IL

Input Low Current

V

−20

µA

I

OSC

Driver Short-Circuit

V

(EIA-485)

−130

−250

mA

Output Current

V

(EIA-422)

−90

−150

mA

(Note 9)

V

(EIA-485)

130

250

mA

RECEIVER CHARACTERISTICS

I

OSR

Short Circuit Output Current

V

−15

−28

−75

mA

I

OZ

V

20

µA

V

OH

Output Voltage High

V

2.4

3.0

V

V

OL

Output Voltage Low

V

0.35

0.5

V

V

TH

Differential Input High

V

0.03

0.20

V

Threshold Voltage

(EIA-422/485)

V

TL

Differential Input Low

V

−0.20

−0.03

V

Threshold Voltage (Note 6)

(EIA-422/485)

V

HST

Hysteresis (Note 7)

V

35

60

mV

DRIVER AND RECEIVER CHARACTERISTICS

V

IH

Enable Input Voltage High

2.0

V

V

IL

Enable Input Voltage Low

0.8

V

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