Absolute Maximum Ratings (Note 2)

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

Supply Voltage

7V

Input Voltage

Strobe Voltage

7V

Output Sink Current

50 mA

Storage Temperature Range

−65˚C to +150˚C

Maximum Power Dissipation at 25˚C

(Note 1)

1433 mV

Lead Temperature (Soldering, 4 sec)

260˚C

Operating Conditions

Min

Max

Units

Supply Voltage (V

4.5

5.5

V

Temperature (T

−55

+125

˚C

Common-Mode Voltage (V

−15

+15

V

Symbol

Parameter

Conditions

Min

Typ

Max Units

V

TH

Differential Threshold Voltage

I

≥ 2.5V

−7V

≤ V

CM

≤ 7V

0.06

0.2

V

−15

≤ V

CM

≤15V

0.06

0.3

V

V

TL

Differential Threshold Voltage

I

≤ 0.5V

−7V

≤ V

CM

≤7V

−0.08 −0.2

V

−15V

≤ V

CM

≤

15V

−0.08 −0.3

V

V

TH

Differential Threshold Voltage

I

≥ 2.5V

−7V

≤ V

CM

≤ 7V

0.47

0.7

V

V

TL

with Fail-Safe Offset = 5V

I

≤ 0.5V

−7V

≤ V

CM

≤ 7V

−0.2 −0.42

V

R

IN

Input Resistance

−15V

≤ V

CM

≤ 15V, 0V ≤ V

CC

≤ 7V

4

5

k

Ω

R

T

Line Termination Resistance

T

100

180

300

Ω

R

O

Offset Control Resistance

T

42

56

70

k

Ω

I

IND

Data Input Current (Unterminated)

V

2

3.1

mA

V

0V

≤ V

CC

≤ 7V

0

−0.5

mA

V

−2

−3.1

mA

V

THB

Input Balance

I

≥ 2.5V,

−7V

≤ V

0.1

0.4

V

(Note 6)

R

Ω

I

≤ 0.5V,

−7V

≤ V

CM

≤ 7V

−0.1

−0.4

V

R

Ω

V

OH

Logical “1” Output Voltage

I

2.5

3

V

V

OL

Logical “0” Output Voltage

I

0.35

0.5

V

I

CC

Power Supply Current

V

V

10

16

mA

V

V

10

16

mA

I

IN (1)

Logical “1” Strobe Input Current

V

1

100

µA

I

IN (0)

Logical “0” Strobe Input Current

V

−290 −400

µA

V

IH

Logical “1” Strobe Input Voltage

V

OL

≤ 0.5, I

2.0

1.12

V

V

IL

Logical “0” Strobe Input Voltage

V

OH

≥ 2.5V, I

1.12

0.8

V

I

OS

Output Short-Circuit Current

V

−30

−100 −170

mA

Note 1: Derate cavity package 9.6 mW/˚C above 25˚C.

Note 2: “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. Except for “Operating Temperature Range”

they are not meant to imply that the devices should be operated at these limits. The table of “Electrical Characteristics” provides conditions for actual device

operation.

Note 4: All currents into device pins shown as positive, out of device pins as negative, all voltages referenced to ground unless otherwise noted. All values shown

as max or min on absolute value basis.

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

Note 6: Refer to EIA-RS422 for exact conditions.

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