> **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 # SparkFun QwiicBus - EndPoint **Type:** Product page · **SKU:** COM-16988 · **Brand:** [Sparkfun](https://core-electronics.com.au/brands/sparkfun-australia) **Page:** https://core-electronics.com.au/sparkfun-qwiicbus-endpoint.html ([markdown](https://core-electronics.com.au/sparkfun-qwiicbus-endpoint.html.md)) The SparkFun QwiicBus EndPoint is the fastest and easiest way to extend the range of your I2C communication bus. The breakout uses NXP’s PCA9615 IC, which converts... ## Pricing - **Price:** $24.90 (inc GST) — $22.64 AUD, exc GST - **Quantity discounts:** 5+ $21.95 (exc GST) · 25+ $21.51 (exc GST) · 100+ $20.60 (exc GST) ## Availability & dispatch - In stock, ships same business day if ordered before 2PM (Australia/Sydney). - We can dispatch 2 today; more stock is typically available with a 5–11 day lead time. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=COM-16988:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart. - **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/COM-16988:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.) - **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there. - **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 The SparkFun QwiicBus EndPoint is the fastest and easiest way to extend the range of your I2C communication bus. The breakout uses NXP's PCA9615 IC, which converts the two default I2C signals into four differential signals, two for SCL and two for SDA. The differential signals are sent over an Ethernet cable, which attaches to the breakout through the on-board RJ-45 connectors. The differential signaling allows the I2C signals to reach distances of up to 100ft. while still maintaining their signal integrity! To make it even easier to get your readings, all communication is enacted exclusively via I2C, utilizing our handy Qwiic system so no soldering is required to connect it to the rest of your system. However, Sparkfun still have broken out 0.1"-spaced pins in case you prefer to use a breadboard. The simplicity of the QwiicBus EndPoint is one of its biggest appeals. Other I2C communication methods require packetizing I2C communication into another protocol, be it RS-485 or 1-Wire. However, the PCA9615 keeps the I2C protocol by utilizing a differential transceiver. This updated version of the Differential I2C Breakout adds two 0.1" spaced pins connected to the unused pair of wires on the RJ-45 connectors so users can easily take advantage of the unused pair for whatever they would like. Whether you need to extend the range of an I2C sensor on an autonomous vehicle plagued with noise from motors or want to create a vast sensor network in your home or office, the QwiicBus EndPoint is a great solution to extend distance and reduce noise susceptibility. *The [SparkFun Qwiic Connect System](https://www.sparkfun.com/qwiic) is an ecosystem of I2C sensors, actuators, shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch, 4-pin JST connector. This reduces the amount of required PCB space, and polarized connections mean you can't hook it up wrong.* [Get Started with the SparkFun QwiicBus Guide](https://learn.sparkfun.com/tutorials/sparkfun-qwiicbus-hookup-guide) **Features** - Uses the PCA9615 buffer IC - I2C Supply voltage range: **2.3-5.5V** - Differential Supply voltage range: **3-5.5V** - Multiple power configurations depending on application needs - Extends I2C bus up to 100 feet - 2x Qwiic Connectors **Documents** - [Schematic](https://core-electronics.com.au/attachments/localcontent/SparkFun_QwiicBus_Endpoint-Schematic_129746c90ff.pdf) - [Eagle Files](https://core-electronics.com.au/attachments/localcontent/SparkFun_QwiicBus_Endpoint_19570e04c9c.zip) - [Dimensional Drawing](https://core-electronics.com.au/attachments/localcontent/QwiicBus_EndPoint-Dimensions_50113f41353.png) - [Hookup Guide](https://learn.sparkfun.com/tutorials/sparkfun-qwiicbus-hookup-guide) - [Datasheet](https://core-electronics.com.au/attachments/localcontent/PCA9615_92126cc2cec.pdf) (PCA9615) - [Qwiic Info Page](https://www.sparkfun.com/qwiic) - [Hardware GitHub Repository](https://github.com/sparkfun/SparkFun_Differential_I2C_Breakout_PCA9615_Qwiic) ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/1/6/16988-sparkfun_qwiicbus_-_endpoint-01.jpg)