IS3751 Presentation

IS3751 General Description

The IS3751 is a DMX512-to-addressable-LED protocol converter chip. It operates fully autonomously, requiring no microcontroller or processor, thereby reducing engineering costs and accelerating the product’s time-to-market.

It can control up to 170 3‑color or 128 4-color addressable LEDs at a refresh rate of 40 Hz.

An RS485 receiver or transceiver converts the DMX differential signaling to TTL-compatible levels for the IS3751, which then directly generates data stream for the addressable LEDs.

The chip includes a pin for selecting between 3-color and 4-color addressable LEDs, and a blinking indicator pin to show when a DMX signal is present.

The device operates at 3.3 V, with 5 V-tolerant open‑collector LEDs control pin and with 5 V-tolerant RX pin for DMX input, allowing compatibility with both 3.3 V and 5 V RS485 receivers or transceivers.

It is available in Industrial (‑40 °C to +85 °C) and Extended (‑40 °C to +125 °C) temperature ranges. Smaller package options are available, contact sales for details.

IS3751 Applications

• Custom Lighting • LED Strips, Panels and Bars • Floodlights and Wall Washers • Building Facades, Bridges and Monuments • Interior Design Lighting • Water Fountains • Museum Lighting • Stage and Entertainment Lighting • Digital Art Installations • Animatronics • OEM / Device Manufacturers

IS3751 Main Advantages

• Autonomous operation, no need of microcontroller • Reduces engineering time and costs • Reduces product time-to-market • Provides a low-cost solution • Compact, easy-to-solder SO8N package

IS3751 Characteristics

• Compatible with LED protocols: ◦ WS2811 ◦ WS2812 / WS2812B / WS2812C ◦ WS2813 ◦ WS2815 ◦ NeoPixel ◦ SK6812 ◦ GS8208 ◦ And similar types • Controls up to 170 3-color or 128 4-color LEDs • Addressable LEDs update rate: 40 Hz • DMX signal detection indicator pi