60. 24V Input Optocoupler Selection
Neha is designing an industrial controller and needs to connect a 24V digital input signal to a 3.3V MCU input safely.
To protect the controller from field-side noise, she wants to use an optocoupler.
The input side will be driven from the 24V signal through a series resistor, and the output side will send an isolated logic signal to the MCU.
She wants a through-hole DIP-4 package for easy prototyping.
Help her select a suitable transistor output optocoupler from DigiKey.
Make sure it has enough isolation voltage and works reliably in industrial temperatures.
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