> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# RS-485 Breakout

**Type:** Product page · **SKU:** BOB-10124 · **Brand:** [Sparkfun](https://core-electronics.com.au/brands/sparkfun-australia)
**Page:** https://core-electronics.com.au/rs-485-breakout.html ([markdown](https://core-electronics.com.au/rs-485-breakout.html.md))

This is a breakout board for the SP3485 RS-485 transceiver IC, which will convert a UART serial stream to RS-485. The SP3485 is a half-duplex transceiver, so it can only communicate one way at a time, but it can reach transmission speeds of up to 10Mbps. This board requires a very low amount of power and can operate from a single +3.3VDC supply.

## Pricing

- **Price:** $20.80 (inc GST) — $18.91 AUD, exc GST
- **Quantity discounts:** 5+ $18.35 (exc GST) · 25+ $17.96 (exc GST) · 100+ $17.21 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 1 today, and up to 100 more in 5–11 days.

## How to buy

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- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

This is a breakout board for the SP3485 RS-485 transceiver IC, which will convert a UART serial stream to RS-485. The SP3485 is a half-duplex transceiver, so it can only communicate one way at a time, but it can reach transmission speeds of up to 10Mbps. This board requires a very low amount of power and can operate from a single +3.3VDC supply.

 This breakout board includes the SP3485 RS-485 transceiver, filter capacitor, and other components shown on the schematic. We’ve broken out the RS-485 output to three different connections: (1) an [RJ-45 connector](https://core-electronics.com.au/search/?q=00643), (2) a [3-pin 3.55mm screw terminal](https://core-electronics.com.au/search/?q=08235), and (3) a 3-pin 0.1" pitch header; none of these output connectors come populated.

**Features:**

- Fully equipped with SP3485 RS-485 transceiver and supporting components
- Operates from a single +3.3V supply
- Interoperable with +5.0V logic
- RS-485 input/output broken out to RJ-45 connector, 3.5mm screw terminal, and 0.1" pitch header
- Driver/Receiver Enable connected to RTS line
- -7V to +12V Common-Mode Input Voltage Range
- Allows up to 32 transceivers on the serial bus
- Driver Output Short-Circuit Protection
 
**Dimensions:** 0.9x1.0"

**Documents:**

- [Schematic](https://core-electronics.com.au/attachments/localcontent/RS485-Breakout-v13_18052907ffb.pdf)
- [Eagle Files](https://core-electronics.com.au/attachments/localcontent/RS485-Breakout-v13_256173fdc15.zip)
- [Datasheet](https://core-electronics.com.au/attachments/localcontent/sp3485CN-LTR_128404e9421.pdf) (SP3485)
 
**Replaces:**[BOB-009823](https://core-electronics.com.au/search/?q=09823)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/r/s/rs-485_breakout__bob-10124__01.jpg)