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please contact the National Semiconductor Sales

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Supply Voltage

7V

Input Voltage

55V

Output Voltage

55V

Storage Temperature

b

Maximum Power Dissipation at 25 C

Cavity Package

1667 mW

Molded Package

1832 mW

Lead Temperature (soldering 4 sec)

260 C

Derate cavity package 111 mW C above 25 C derate molded package

147 mW C above 25 C

Recommended Operating

Conditions

Min

Max

Units

DP7308

45

55

V

DP8308

475

525

V

DP7308

b

55

a

125

C

DP8308

0

a

70

C

Symbol

Parameter

Conditions

Min

Typ

Max

Units

A PORT (A0 – A7)

Logical ‘‘1’’ Input Voltage

20

V

Logical ‘‘0’’ Input Voltage

DP8308

08

V

DP7308

07

V

Logical ‘‘1’’ Output Voltage

V

27

395

V

Logical ‘‘0’’ Output Voltage

035

05

V

03

04

V

Output Short Circuit

b

10

b

38

b

75

mA

Current

Logical ‘‘1’’ Input Current

01

80

m

A

Input Current at Maximum

1mA

Input Voltage

Logical ‘‘0’’ Input Current

b

70

b

200

m

A

b

07

b

15

V

OutputInput

b

200

m

A

TRI-STATE Current

80

m

A

B PORT (B0 – B7)

Logical ‘‘1’’ Input Voltage

20

V

Logical ‘‘0’’ Input Voltage

DP8308

08

V

DP7308

07

V

Logical ‘‘1’’ Output Voltage

V

27

39

V

24

36

V

Logical ‘‘0’’ Output Voltage

03

04

V

04

05

V

Output Short Circuit

b

25

b

50

b

150

mA

Current

Logical ‘‘1’’ Input Current

01

80

m

A

Input Current at Maximum

1mA

Input Voltage

Logical ‘‘0’’ Input Current

b

70

b

200

m

A

b

07

b

15

V

OutputInput

b

200

m

A

TRI-STATE Current

a

200

m

A

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