Holtek Semiconductor HT6221
The HT6221/HT6222 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.| Part No. | HT6221 |
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| Datasheet | HT6221 Download |
| Manufacturer |  Holtek Semiconductor |
| Description | Multi-Purpose Encoders |
| Buy | Stock & Price |
FEATURES
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● Operating voltage: 1.8V~3.5V DOUT with 38kHz carrier for IR medium Low standby current Minimum transmission word: one word 455kHz ceramic resonator or crystal 16-bit address codes 8-bit data codes
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● PPM code method Three double-active keys Maximum active keys - HT6221: 32 keys - HT6222: 64 keys Low power and high noise immunity CMOS technology
APPLICATIONS
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● Television and video cassette recorder controllers Burglar alarm systems Smoke and fire alarm systems Garage door controllers
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● Car door controllers Car alarm systems Security systems Other remote control systems
GENERAL DESCRIPTION
The HT6221/HT6222 contain 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 X 2 X 1 D a ta S e le c t & B u ffe r S y n c . C ir c u it O s c illa to r D iv id e r D O U T L E D R 1 R 8 K e y b...
