add SOIC-8 for THS3491
SOIC-8 variant for THS3491. dimensions from datasheet page 48/53 http://www.ti.com/lit/ds/symlink/ths3491.pdf
kicad-footprints PR https://github.com/KiCad/kicad-footprints/pull/1541
Edited by Joel Guittet
SOIC-8 variant for THS3491. dimensions from datasheet page 48/53 http://www.ti.com/lit/ds/symlink/ths3491.pdf
kicad-footprints PR https://github.com/KiCad/kicad-footprints/pull/1541