Usage

The usage of the IS3751 is very straightforward.

Place an RS485 receiver or transceiver (3.3 V or 5 V) between the DMX connector and the IS3751 RX pin.

Add a pull-up resistor of 500 Ω to 5 V on IS3751 LEDS pin, and connect this pin to the addressable LEDs.

Connect the TYPE pin to GND when using 3‑color addressable LEDs, or to 3.3 V when using 4‑color addressable LEDs.

Optionally, connect a standard LED with a current‑limiting resistor to the ACT pin to indicate that the IS3751 is receiving valid DMX data.

Keep pins 1 and 8 either unconnected or tied to GND.

The IS3751 automatically starts converting DMX data to addressable LED data immediately after receiving power‑up.