ET9561 Description
These devices are specifically designed as receiver circuits for the phototransistor signals available in some optical encoders. Connect the emitters of the phototransistors to the input pins, with the collectors connected to Vcc. The inputs have 330 ohm resistors to terminate the phototransistors in an emitter follower mode.
ET9561 Key Features
- Supply Voltage Range 4.5V to 30V
- Designed for phototransistor inputs
- Ungated index channel
- Current sink for LED drive (see application note
- Outputs short circuit protected
- 25mA peak drive current