If MilitaryAerospace specified devices are required

please contact the National Semiconductor Sales

OfficeDistributors for availability and specifications

Supply Voltage

18V

Input Voltage

g

25V

Strobe Voltage

18V

Output Sink Current

50 mA

Maximum Power Dissipation at 25 C

Cavity Package

1433 mW

Molded Package

1362 mW

Derate cavity package 96 mW C above 25 C derate molded package

109 mW C above 25 C

Storage Temperature Range

b

Lead Temperature (Soldering 4 seconds)

260 C

Operating Conditions

Min

Max

Units

45

15

V

DS78C120

b

55

a

125

C

DS88C120

0

a

70

C

b

15

a

15

V

Symbol

Parameter

Conditions

Min

Typ

Max Units

Differential Threshold

b

006

02

V

Voltage

b

006

03

V

Differential Threshold

b

b

008

b

02

V

Voltage

b

b

008

b

03

V

Differential Threshold

b

047

07

V

Voltage Fail-Safe

b

02

042

V

Input Resistance

b

4

5

kX

100

180

300

X

Offset Control Resistance

kX

Data Input Current

2

31

mA

(Unterminated)

0

b

05

mA

b

2

b

31

mA

Input Balance

b

01

04

V

(Note 5)

b

b

01

b

04

V

Logical ‘‘1’’ Output Voltage

V

Logical ‘‘0’’ Output Voltage

025

05

V

Power Supply Current

8

15

mA

15

30

mA

Logical ‘‘1’’ Strobe Input

15

100

m

A

Current

Logical ‘‘0’’ Strobe Input

b

05

b

100

m

A

Current

Logical ‘‘1’’ Strobe Input

35

25

V

Voltage

80

50

V

125

75

V

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