GM6486
GM6486
33 OUTPUT LED DRIVER
General Description
The GM6486 is a monolithic MOS integrated circuit
produced with high voltage CMOS technology. It is
available in a 40-pin dual in-line plastic package. A
sin-gle pin controls the LED display brightness by
setting a reference current through a variable
resistor connect-ed to VDD or to a separated supply
of 13.2V maximum.
Pin Configuration
40 PIN DIP
V
SS
OUT BIT 16
OUT BIT 15
OUT BIT 14
OUT BIT 13
OUT BIT 12
OUT BIT 11
OUT BIT 10
OUT BIT
OUT BIT
OUT BIT
OUT BIT
OUT BIT
OUT BIT
OUT BIT
OUT BIT
OUT BIT
9
8
7
6
5
4
3
2
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40
39
38
37
36
35
34
33
32
31
OUT BIT 17
OUT BIT 18
OUT BIT 19
OUT BIT 20
OUT BIT 21
OUT BIT 22
OUT BIT 23
OUT BIT 24
OUT BIT 25
OUT BIT 26
OUT BIT 27
OUT BIT 28
OUT BIT 29
OUT BIT 30
OUT BIT 31
OUT BIT 32
OUT BIT 33
LOAD
DATA IN
CLOCK IN
Features
l
33 Output, 15mA Sink Capability
l
Current Generator Outputs (No External
Resistros Required)
l
Continous Brightness Control
l
Serial Data Input-Output
l
External Load Input
l
Cascade operation capability
l
Wide supply voltage range
l
TTL compatibility
GM6486
30
29
28
27
26
25
24
23
22
21
Block Diagram
BRIGHTNESS
CONTROL
InF
100K鈩?/div>
TYP
750碌
V
DD
OUTPUT BIT 33
OUTPUT BIT 1
DATA OUT
BRIGHTNESS
CONTROL
V
DD
Top View
44 PIN PLCC
OUT BIT 13
OUT BIT 14
OUT BIT 15
OUT BIT 16
OUT BIT170
OUT BIT 18
OUT BIT 19
OUT BIT 20
20
24
17
NC
V
SS
NC
33
BUFFES
OUTPUT
LOAD
SERIAL
DATA
CLOCK
23
22
33 LATCHES
18
DATA
OUT
OUT BIT 12
OUT BIT 11
OUT BIT 10
OUT BIT 9
OUT BIT
OUT BIT
OUT BIT
OUT BIT
OUT BIT
OUT BIT
OUT BIT
8
7
6
5
4
3
2
OUT BIT 21
OUT BIT 22
OUT BIT 23
OUT BIT 24
33 BIT SHIFT REGISTER
21
GM6486-44
OUT BIT 25
OUT BIT 26
OUT BIT 27
OUT BIT 28
OUT BIT 29
OUT BIT 30
OUT BIT 31
1
V
SS
Application
l
Microprocessor Displays
l
Industrial control Indicator
l
Relay Driver
l
Instrumentation Readouts
NC
V
DD
BRIGHTNES
CONTROL S
DATA OUT
OUT BIT 1
NC
CLOCK IN
DATA IN
OUT BIT 20
OUT BIT 20
LOAD
1
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