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How do you isolate multiple digital input channels with limited board space?
In any design, board space is precious. The ISO121x device is ideal for high-density compact multi-channel designs and saves more board real estate than multiple optocoupler solutions. Channels on the ISO1212 are independent so in the case of failure on one channel, the other is not affected. Please read Space saving design techniques for multi-channel high voltage digital input modules and refer to this TI Design 96-Channel Bidirectional Digital Input Module Reference Design for PLC for design techniques on how save space using isolated digital inputs.
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