# 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.

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### IS3751 Applications

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

### IS3751 Main Advantages

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

### IS3751 Characteristics

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