HT6221/HT6222 Multi-Purpose Encoders 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 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.
The Holtek HT6221/HT6222 are CMOS LSI encoders designed specifically for use in remote control systems. They encode 16-bit address codes and 8-bit data codes using a PPM (Pulse Position Modulation) method with an IR transmission medium. The HT6221 supports up to 32 active keys, while the HT6222 supports up to 64 active keys.
| Operating voltage | 1.8V~3.5V |
|---|---|
| Maximum active keys (HT6221) | 32 keys |
| Maximum active keys (HT6222) | 64 keys |
The operating voltage ranges from 1.8V to 3.5V.
The HT6221 supports a maximum of 32 active keys.