Absolute Maximum Ratings

If MilitaryAerospace specified devices are required

please contact the National Semiconductor Sales

OfficeDistributors for availability and specifications

Voltage at Any Pin

Storage Temperature

b

Power Dissipation at 25 C

Molded DIP Package Board Mount

24W

Molded DIP Package Socket Mount

21W

Junction Temperature

150 C

Lead Temperature (Soldering 10 sec)

300 C

52 CW Derate 192 mW C

above 25 C

58 CW Derate 172 mW C

above 25 C

Electrical Characteristics

b

0V unless otherwise specified

Symbol

Parameter

Conditions

Min

Typ

Max

Units

Power Supply

475

11

V

Power Supply Current

Excluding Output Loads

7

mA

Input Voltage

g

10 mA Input Bias

b

03

08

V

Logical ‘‘0’’ Level

Input Voltage

22

V

Logical ‘‘1’’ Level

V

Brightness Input Current

0

075

mA

(Note 2)

Output Sink Current (Note 3)

30V

100

m

A

Segment OFF

Output Sink Current (Note 3)

1V

Segment ON

Brightness Input

0 mA

0

100

m

A

Brightness Input

100 mA

20

27

40

mA

Brightness Input

750 mA

150

250

mA

Brightness Input Voltage

Input Current

750 mA

30

43

V

(Pin 13)

OM

Output Matching (Note 1)

g

20

%

b

Symbol

Parameter

Conditions

Min

Typ

Max

Units

Clock Input Frequency

(Notes 5 and 6)

DC

500

kHz

High Time

950

ns

Low Time

950

ns

Data Input Set-Up Time

300

ns

Data Input Hold Time

300

ns

Note 1

Note 2

With a fixed resistor on the brightness input pin some variation in brightness will occur from one device to another Maximum brightness input current can

be 2 mA as long as Note 3 and junction temperature equation are complied with

Note 3

Absolute maximum for each output should be limited to 40 mA

Note 4

Note 5

Note 6

Clock input rise and fall times must not exceed 300 ns

2