SC8521 Overview
The SC8521 can be used in infrared remote control transmitters. It generates output pulses, in accordance with the RC5 protocol, when a key is pressed. The IC does not contain a software programmable processor.
SC8521 Key Features
- Power-down and key wake-up
- High output current ( 45mA)
- Oscillator frequency of 432KHz
- Multiple key protection
- Option of 25% or 33% duty factor
- RC5 protocol
- Maximum of 56 keys (20-pin version)
- Option of multi-system or single system transmitter
- Multi-system: maximum 8 system, selection by key -- Single system: maximum 8 different systems per IC