Enter “ RSET ” in the New Name: field and select OK.Select the first pin you placed, and the Name dialog will open.Select the Name icon on the left-hand side of your interface.But we need to change these to match what it shows on our datasheet. You probably noticed that Autodesk EAGLE names all of your pin names by default as you place them. But those pin names aren’t right we will change those now. We’ve left a gap between ours for easier readability as shown in the image below. To place the 2 pins on the right, right-click twice to rotate your pin 180° and then left-click to place. Go ahead and repeat this process for the remaining pins on your symbol.Left-click in your Symbol Editor workspace to place your first pin.Select the Pin icon on the left-hand side of your interface.

Based on the datasheet, we need 5 pins in total, 3 on the left and 2 on the right. Now that you have a new symbol added to your library you’ll be greeted with the Symbol Editor window. This is all the information you need to get started with your symbol.Īdding the name for our first Autodesk EAGLE symbol – TPS92411 from TI. RSNS – This pin senses the VS voltage relative to our system’s ground.DRAIN – As its name suggests, this pin serves as the drain for our device.VIN – This pin serves as the positive supply for our device.VS – This pin serves as the internal switch and the device’s floating ground.RSET – This pin serves as the reset of the device, allowing the switch to open.We’ll be using the SOT23-5 package type, which requires 5 pins, including: Lucky for us Texas Instruments makes some impressive datasheets, and if you look on page 3 you’ll see the Pin Configuration and Functions heading. This summary is important when it comes to making your symbol, as it tells you exactly what pins you need and what their labels are without having to guess. Within most quality datasheets you’ll find both a table and drawing that gives a summary of all the pins and their intended functions for a device. Feel free to follow along with the TPS92411 datasheet. Let’s begin! Prep Step – Remember the Datasheetīefore we set sail, you’ll need to gather your datasheet! In our example, we’ll be making a symbol for a MOSFET switch from Texas Instruments. You can think of these symbols as the map to the chest of schematic treasure! Symbols show off all the functionality of your design without having to get into the nitty gritty of physical dimensions and packages. Regardless of what kind of design you’re creating, it all begins with symbols and schematics.

Now, it’s time to continue on your journey by learning how to build your first symbol. Welcome back to the Library Basics Series, Pirates! In Part 1 you got your hands dirty creating your very first package in Autodesk EAGLE. 7 min read Library Basics Part 2: Creating Your First Symbol in Autodesk EAGLE

Cad switch symbol