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/HT6221B/HT6222A contain 30keys (K1~K20, K33~K34, K37~K38, K41~K42, K45~K46, K49~K50), 32 keys (K1~K32), 48 keys (K1~K32, K33~K34, K37~K38, K41~K42, K45~K46, K49~K50, K53~K54, K57~K58, K61~K62) and 64 keys (K1~K64), respectively. When one of the keys is triggered, the programmed address/data is transmitted to gether with the header bits via an IR (38kHz carrier) transmission medium.
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 HT6221B: 48 keys HT6222A: 64 keys Low power and high noise immunity CMOS technology HT6220A: 16-pin NSOP package HT6221A/HT6221B: 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
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