MM74C922 MM74C923 16-Key Encoder 20-Key Encoder
October 1987 Revised January 1999
MM74C922 MM74C923 16-Key Encoder 20-Key Encoder
General Description
The MM74C922 and MM74C923 CMOS key encoders provide all the necessary logic to fully encode an array of SPST switches. The keyboard scan can be implemented by either an external clock or external capa...
