add datasheet for the 4-bit version of the level shifter in case we use it
-rw-r--r-- 80 .gitignore
drwxr-xr-x - Datasheets
-rw-r--r-- 82789 License.pdf
-rw-r--r-- 1324 Makefile
-rw-r--r-- 60 attribs
-rw-r--r-- 125 gafrc
drwxr-xr-x - packages
-rw-r--r-- 73 project
drwxr-xr-x - symbols
-rw-r--r-- 89605 teleshield.pcb
-rw-r--r-- 30763 teleshield.sch