HT6221A

HT6220A/HT6221A/HT6222A Multi-Purpose Encoders Features · Operating voltage: 2.0V~3.6V · DOUT with 38kHz carrier for IR medium · Low standby current · Minimum transmission word: one word · Build-in RC (Internal RC) oscillator · 16-bit address codes · 8-bit data codes · PPM code method · Three double-active keys · Maximum active keys - HT6220A: 30 keys - HT6221A: 32 keys - HT6222A: 64 keys · Low power and high noise immunity CMOS technology · HT6220A: 16-pin NSOP package HT6221A: 20-pin SOP package HT6222A: 24-pin SOP package Applications · Television , setup box and DVD player controllers · Burglar alarm systems · Smoke and fire alarm systems · Garage door controllers · Car door controllers · Car alarm systems · Security systems · Other remote control systems General Description The devices are CMOS LSI encoders designed for use in remote control systems. They are capable of encoding 16-bit address codes and 8-bit data codes. Each address/data input can be set to one of the two logic states, 0 and 1. The HT6220A/HT6221A/HT6222A contain 30keys (K1~K16, K17~K20, K33~K34, K37~K38, K41~K42, K45~K46, K49~K50), 32 keys (K1~K32) and 64 keys (K1~K64), respectively. When one of the keys is triggered, the programmed address/data is transmitted together with the header bits via an IR (38kHz carrier) transmission medium. Block Diagram www.DataSheet4U.com O s c illa to r D iv id e r D a ta S e le c t & B u ffe r S y n c . C ir c u it D O U T L E D R 1 R 8 K e y b o a rd M a t...