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Part Name
Description
MAX6970AUE View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX6970AUE
8-Port, 36V Constant-Current LED Driver
Maxim Integrated
MAX6970AUE Datasheet PDF : 12 Pages
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8-Port, 36V Constant-Current LED Driver
Table 1. 4-Wire Serial-Interface Truth Table
SERIAL- CLOCK
DATA INPUT
INPUT
DIN CLK
D
0
SHIFT-REGISTER
CONTENTS
LOAD
INPUT
D
1
D
2
… D
n-1
D
n
LE
LATCH CONTENTS
BLANKING
INPUT
D
0
D
1
D
2
… D
n-1
D
n
OE
OUTPUT CONTENTS
D
0
D
1
D
2
… D
n-1
D
n
H
H R
1
R
2
… R
n-2
R
n-1
—
L
L R
1
R
2
… R
n-2
R
n-1
—
X
R
0
R
1
R
2
… R
n-1
R
n
—
—
—
X X X…X X H
—
— P
1
P
2
P
3
… P
n-1
P
n
L
—
— — — — —— — —
L = Low-logic level.
H = High-logic level.
X = Don’t care.
P = Present state.
R = Previous state.
— —————
— —————
— —————
R
0
R
1
R
2
R
n-1
R
n
P
0
P
1
P
2
… P
n-1
P
n
X X X…X X
—
— —————
—
— —————
—
— —————
—
— —————
L
P
0
P
1
P
2
…
P
n
-
1
P
n
H
Hi-Z Hi-Z Hi-Z … Hi-Z Hi-Z
Selector Guide
PART
MAX6968
MAX6977
MAX6978
MAX6970
MAX6981
MAX6980
MAX6969
MAX6979
MAX6971
MAX6983
NUMBER OF
OUTPUTS
8
8
16
16
MAX OUTPUT
VOLTAGE (V)
5.5
MAX OUTPUT
CURRENT
36
55mA
5.5
36
LED FAULT
DETECTION
—
Yes
Yes
—
Yes
Yes
—
Yes
—
Yes
WATCHDOG
—
—
Yes
—
—
Yes
—
Yes
—
Yes
_______________________________________________________________________________________ 9
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