This is a 28-Pin SSOP to DIP break out boards. The footprint was rotated to accommodate different width SSOP devices and can be used with any pin count up to 28 pins. Designed to be used with 0.65mm pitch devices but can also be used with 0.025″ pitch devices (comes out to ~0.635mm) and 0.635mm devices fit just fine. Can be used with packages that have a lead span of .230″ up to .350″.
Resources
Schematic
Eagle Files
GitHub(Design Files)