If MilitaryAerospace specified devices are required

please contact the National Semiconductor Sales

OfficeDistributors for availability and specifications

Supply Voltage

70V

Input Voltage

55V

Output Voltage

55V

Maximum Power Dissipation at 25 C

Cavity Package

1509 mW

Molded Package

1476 mW

Derate cavity package 101 mW C above 25 C derate molded package

118 mW C above 25 C

Storage Temperature

b

Lead Temperature (Soldering 4 seconds)

260 C

Operating Conditions

Min

Max

Units

DS7834

45

55

V

DS8834

475

525

V

DS7834

b

55

a

125

C

DS8834

0

a

70

C

Symbol

Parameter

Conditions

Min

Typ

Max

Units

DISABLEDRIVER INPUT

High Level Input Voltage

20

V

Low Level Input Voltage

08

V

High Level Input Current

40

m

A

10

mA

Low Level Input Current

b

10

b

16

mA

Driver Diasbled Input

b

40

m

A

Low Current

Input Clamp Diode

b

08

b

15

V

RECEIVER INPUTBUS OUTPUT

High Level Threshold Voltage

DS7834

14

175

21

V

DS8834

15

175

20

V

Low Level Threshold Voltage

DS7834

08

135

16

V

DS8834

08

135

15

V

Bus Current Output

25

80

m

A

Disabled or High

50

80

m

A

b

40

m

A

Logic ‘‘1’’ Output Voltage

DS7834

24

275

V

DS7834

24

275

V

Logic ‘‘0’’ Output Voltage

028

05

V

04

V

Output Short Circuit Current

b

40

b

62

b

120

mA

RECEIVER OUTPUT

Logic ‘‘1’’ Output Voltage

DS7834

24

30

V

DS8834

24

29

V

Logic ‘‘0’’ Output Voltage

022

04

V

Output Short Circuit Current

DS7834

b

28

b

40

b

70

mA

DS8834

b

30

b

70

mA

Supply Current

75

95

mA

Note 1

‘‘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 2

Note 3

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 4

Only one output at a time should be shorted

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