24-Output PWM LED Drivers
for Message Boards
Pin Description
PIN
1
2
3
4
5
6
7
8–15
16–23
24, 40
25
26
27
28
29
30
31
32–39
EP
NAME
MUX0
CLKI+
CLKI-
DIN+
DIN-
LOADI
I.C.
R0–R7
G0–G7
V DD
LOADO
DOUT-
DOUT+
CLKO-
CLKO+
MUX1
AGND
B7–B0
GND
FUNCTION
Multiplex 0 Active-Low, Open-Drain Output. Use MUX0 to drive a pnp transistor.
PWM and Serial-Interface Noninverting Clock LVDS Input
PWM and Serial-Interface Inverting Clock LVDS Input
Serial-Interface Noninverting Data LVDS Input
Serial-Interface Inverting Data LVDS Input
Serial-Interface Load CMOS Input
Internally Connected. Connect to GND.
Red LED Drive Outputs. R0 to R7 are open-drain, constant-current sinks.
Green LED Drive Outputs. G0–G7 are open-drain, constant-current sinks.
Positive Supply Voltage. Bypass V DD to GND with a 0.1μF ceramic capacitor.
Serial-Interface Load CMOS Output
Serial-Interface Inverting Data LVDS Output
Serial-Interface Noninverting Data LVDS Output
PWM and Serial-Interface Inverting Clock LVDS Output
PWM and Serial-Interface Noninverting Clock LVDS Output
Multiplex 1 Active-Low, Open-Drain Output. Use MUX1 to drive a pnp transistor.
Analog Ground. Connect to GND.
Blue LED Drive Outputs. B0 to B7 are open-drain, constant-current sinks.
Power Ground. Exposed pad on package underside must be connected to GND.
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