The CM2221and CM2222 are remote control transmitters utilizing CMOS Technology specially designed for use on infrared remote control applications. They are pin-to-pin compatible with NEC PD6121 andPD6122 respectively. CM2221 is packaged in 20 pins SO and capable of controlling 32 functions and 3 double keys. CM2222, on the other hand, is housed in 24 pins SO and capable of controlling 64 function keys and 3 double keys. CM2221/2 may be paired with 8112 to construct a powerful remote control system.