Hi David, That pin will be noisy as heck and also mostly follow the internal V+ insid= e the chip, so it will vary depending on the instantaneous current drain of= the entire chip, expect 200 millivolts or more, peak-to-peak. Even if you = heavily filter the output, I wouldn't trust it to be closer than 20 milliv= olts from the Vcc pin voltage. Best regards, Bob P.S. Now that Microchip =3D Atmel you're using PICs again???? :) ________________________________________ From: piclist-bounces@mit.edu on behalf of David = Van Horn=20 Sent: Tuesday, June 4, 2019 5:14 AM To: Microcontroller discussion list - Public. Subject: [EE] Output pin voltage on PIC24FJ128GA306T-I/PT The data sheet uses 3.6V as VCC, and specifies a 3mA load, neither of which= is true in my application. VCC is 3.3V, and the I/O pin load is a 1uA leakage current from a logic gat= e. What's the minimum I can expect for a logic high output voltage under these= circumstances? -- David VanHorn Lead Hardware Engineer --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .