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.

Benefits

• 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

Specs

• Drives up to 170 3-color addressable LEDs or 128 4-color addressable LEDs
• FPS: 40 Hz
• Compatible with:
• WS2811
• WS2812 / WS2812B / WS2812C
• WS2813
• WS2815
• NeoPixel
• SK6812
• GS8208
• All color sequences: GRB, RGB, etc.
• DMX signal detection indicator pin

Examples and Documentation

Documentation

• 📄 IS3751 Datasheet

Firmware Examples

• 👉 No firmware need!

Hardware Examples

• 👉 IS3751 Schematic Design Example

Pick'n'Place

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Questions?

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