Current-limiting termination (CLT) devices form a new series of intelligent protected terminations designed for digital-input modules and proximity-sensor interfaces used in factory, industrial, and building automation systems, and more particularly for programmable logic controllers.

ST’s current limiters or CLT series main features are:
    - Up to 8 protected integrated channels available
    - Up to 2 MHz data interface speeds, isolated or non-isolated, SPI available
    - 600 W overvoltage protection integrated
    - Highly-immune solutions such as those described in IEC 61000-4
    - Power dissipation halved for more integrated modules

The SCLT3-8BQ7 and CLT01-38SQ7 are new additions to the serialized 8-input termination circuit series – SCLT03 and CLT01 – and are housed in a QFN-48L package (7x7mm).  

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