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

6.5V

Control Input Voltage

5.5V

Driver Input and Receiver Output

5.5V

Driver Output Receiver Input Clamp

Current

Power Dissipation at 70˚C

900 mW

Storage Temperature Range

−65˚C to +150˚C

Lead Temperature (Soldering, 3

sec.)

260˚C

Recommended Operating

Conditions

Min

Max

Units

Supply Voltage, V

CC

4.5

5.5

V

Bus Termination Voltage (V

2.0

2.2

V

Operating Free Air Temperature

0

70

˚C

T

Symbol

Parameter

Conditions

Min

Typ

Max

Units

DRIVER AND CONTROL INPUT: (DE, RE , Dn)

V

IH

Input High Voltage

2.0

V

V

IL

Input Low Voltage

0.8

V

I

I

Input Leakage Current

DE = RE = Dn = V

CC

100

µA

I

IH

Input High Current

DE = RE = Dn = 2.5V

20

µA

I

IL

Dn Input Low Current

Dn = 0.5V, DE = V

−200

µA

DE Input Low Current

DE = 0.5V, Dn = V

−500

µA

RE Input Low Current

RE = 0.5V, V

−100

µA

V

CL

Input Diode Clamp Voltage

I

−1.2

V

DRIVER OUTPUT/RECEIVER INPUT: (Bn)

V

OLB

Output Low Bus Voltage

Dn = DE = V

IH (Figure 2)

0.75

1.0

1.2

V

R

Ω,V

Dn=DE=V

IH (Figure 2)

0.75

1.0

1.1

V

R

Ω,V

I

ILB

Output Bus Current (Power On)

Dn = DE = 0.8V, V

−250

100

µA

Bn = 0.75V

I

IHB

Output Bus Current (Power Off)

Dn = DE = 0.8V, V

100

µA

Bn = 1.2V

V

OCB

Driver Output Positive Clamp

V

2.9

V

V

3.2

V

V

OHB

Output High Bus Voltage

V

1.90

V

V

Ω

V

TH

Receiver Input Threshold

1.47

1.55

1.62

V

RECEIVER OUTPUT: (Rn)

V

OH

Voltage Output High

Bn = 1.2V, I

2.5V

V

V

OL

Voltage Output Low

Bn = 2V, I

0.35

0.5

V

I

OZ

TRI-STATE Leakage

V

20

µA

V

−20

µA

I

OS

Output Short Circuit Current

Bn = 1.2V, V

−80

−120

−200

mA

(Note 5)

RE = 0.8V, V

I

CC

Supply Current

Dn = DE = RE = V

70

95

mA

Note 1: “Absolute maximum ratings” are those beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the device should

be operated at these limits. The table of “Electrical Characteristics” provide conditions for actual device operation.

Note 2: All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to device ground unless otherwise specified.

Note 5: Only one output at a time should be shorted.

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