Current limiters

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).

CLT01-38SQ7
High speed digital input current limiter
SCLT3-8BT8
Protected digital input termination with serialized state transfer
CLT01-38S4
High speed protected digital termination array
CLT3-4B
CURRENT LIMITED OVER-VOLTAGE PROTECTED QUAD DIGITAL TERMINATION
PCLT-2A
Dual current limited overvoltage protected digital termination
SCLT3-8BQ7
High speed digital input current limiter with digital filter

Current-limiting termination portfolio

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