Overview
TC6221 and TC6222 chips are general-purpose infrared remote control transmitter integrated circuits, which are manufactured by CMOS technology, and can connect up to 32 or 64 buttons. Three sets of double keys. Among them, TC6221 can be connected to 32 buttons, and TC6222 can be connected to 64 buttons, and the respective packages are SOP-20 and SOP-24. Both TC6221 and TC6222 are remote control chips with built-in triode function, which can be used directly on the original PCB board using 6121 or 6122, without the need for To change the PCB board, you only need to directly short the B and C poles of the original design to place the triode and it can be used.

Main Features
➢ Low-voltage CMOS process manufacturing
➢ Wide working voltage range 1.8V-4.0V
➢ Up to 65536 user codes can be generated through external connection
➢ Can be selected by SEL pin, up to 128+ 6 instruction codes can be supported
➢ SOP-24, SOP-20, COB packages are optional, and DIE bare chips can also be used directly
➢ Built-in high-current MOS tube, which can save the peripheral driving transistor, and directly use the internal high-current MOS tube to drive the external infrared emission tube
➢ Built-in filter circuit and ceramic capacitors, all external capacitors can be saved

Scope of application
➢ VCD, DVD player, TV, integrated audio equipment, TV set-top box