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April 2004

M5481

LED DISPLAY DRIVER

REV. 2

FEATURES SUMMARY

■

CURRENT GENERATOR OUTPUTS (no

registor required)

■

CONTINUOU

S BRIGHTNESS CONTROL

■

SERIAL DATA INPUT

■

DATA ENABLE

■

WIDE SUPPLY VOLTAGE OPERATION

■

TLL COMPATIBILITY

■

APPLICATION EXAMPLES

■

MICROPROCESSOR DISPLAYS

■

INDUSTRIAL CONTROL INDICATOR

■

RELAY DRIVER

■

INSTRUMENTATION READOUTS

DESCRIPTION

The M5481 is a monolithic MOS integrated circuit

produced with a N-channel silicon gate technolo-

gy. It uses the M5450 die packaged in a 20-pin

plastic package copper frame, making it ideal for a

1-digit display. A single pin controls the LED dis-

play brightness by setting a reference current

or to a separate supply of 13.2V maximum.

The M5481 is a pin-to-pin replacement of the NS

MM 5481.

Figure 1. Package

Figure 2. Pin Connections

PDIP20

(Plastic package)

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

Output Bit 9

Data Enable

Data In

Clock

Brightness Control

Output Bit 8

Output Bit 7

Output Bit 6

Output Bit 5

Output Bit 4

Output Bit 3

Output Bit 2

Output Bit 1

Output Bit 10

Output Bit 11

Output Bit 12

Output Bit 13

Output Bit 14