If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

Supply Voltage (V

+12V

Input Voltage (DE, RE*, & DI)

−0.5V to (V

Common Mode (V

Driver Output/Receiver Input

Input Voltage (DO/RI, DO*/RI*)

Receiver Output Voltage

−0.5V to (V

Maximum Package Power Dissipation

M Package 1190 mW, derate

9.5 mW/˚C above +25˚C

N Package 744 mW, derate

6.0 mW/˚C above +25˚C

Storage Temperature Range

−65˚C to +150˚C

Lead Temperature

(Soldering 4 sec)

+260˚C

Recommended Operating

Conditions

Min

Typ

Max

Units

Supply Voltage (V

+4.75

+5.0

+5.25

V

Bus Voltage

−7

+12

V

Operating Free Air Temperature (T

DS36C279T

−40

+25

+85

˚C

DS36C279

0

+25

+70

˚C

Over Supply Voltage and Operating Temperature ranges, unless otherwise specified

Symbol

Parameter

Conditions

Reference

Min

Typ

Max

Units

DIFFERENTIAL DRIVER CHARACTERISTICS

V

OD1

Differential Output Voltage

I

(422)

(485)

1.5

5.0

V

V

OD0

Output Voltage

I

0

5.0

V

V

OD0*

Output Voltage

(Output to GND)

0

5.0

V

V

OD2

Differential Output Voltage

R

(422)

Figure 1

2.0

2.8

V

(Termination Load)

R

(485)

1.5

2.3

5.0

V

∆V

OD2

Balance of V

OD2

R

(Note 6)

−0.2

0.1

+0.2

V

|V

(422, 485)

V

OD3

Differential Output Voltage

R1 = 54

Ω,R2=375Ω

Figure 2

1.5

2.0

5.0

V

(Full Load)

V

V

OC

Driver Common Mode

R

(485)

Figure 1

0

3.0

V

Output Voltage

R

(422)

0

3.0

V

∆V

OC

Balance of V

OC

R

(Note 6)

−0.2

+0.2

V

|V

(422, 485)

I

OSD

Driver Output Short-Circuit

V

(485)

Figure 4

200

+250

mA

Current

V

(485)

−190

−250

mA

RECEIVER CHARACTERISTICS

V

TH

Differential Input High

Threshold Voltage

V

(Note 7)

(422, 485)

+0.035

+0.2

V

−7V

≤ V

V

TL

Differential Input Low

Threshold Voltage

V

−0.2

−0.035

V

−7V

≤ V

V

HST

Hysteresis

V

(Note 8)

70

mV

R

IN

Input Resistance

−7V

≤ V

DS36C279T

24

68

k

Ω

DS36C279

48

68

k

Ω

I

IN

Line Input Current

Other Input = 0V,

DS36C279

V

0

0.19

0.25

mA

(Note 9)

DE = V

0

−0.1

−0.2

mA

V

DS36C279T

V

0

0.19

0.5

mA

or 0V

V

0

−0.1

−0.4

mA

I

ING

Line Input Current Glitch

Other Input = 0V,

DE=V

DS36C279

V

0

0.19

0.25

mA

(Note 9)

V

0

−0.1

−0.2

mA

V

T

DS36C279T

V

0

0.19

0.5

mA

V

0

−0.1

−0.4

mA

I

B

Input Balance Test

RS = 500

Ω

(422) (Note 12)

mV

V

OH

High Level Output Voltage

I

RO

Figure 11

3.5

4.6

V

V

OL

Low Level Output Voltage

I

0.3

0.5

V

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