ATtiny202 Buffered Electrical Bypass Quasi-IC

From the vendor

The same circuit as the ATtiny13A quasi-IC (OPA1678 buffers, TMUX4053 switching with the 5 ms mute, footswitch debounce, state and LED), shrunk to a 43 x 16 mm four-layer board around an ATtiny202, with a single row of nine pins so it can stand vertically on right-angle headers. Surface-mount, made to be assembled by the fab.

Fabrication notes from the designer: I used these with JLCPCB; their suitability for other fabricators is unknown. They were generated from the KiCad project via kicad-jlcpcb-tools. The files were generated on August 29, 2026; JLC/LCSC part numbers were valid at that time, but are subject to change. Some parts' orientation in the CPL file is incorrect; I had to manually fix the orientation of most polarized parts and ICs using JLC's web interface. This module was designed for automated assembly; successful hand-soldering is effectively impossible.