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ST Unveils High-Speed Digital-Input Current Limiters Ideal for Factory Automation

SCLT3-8BQ7 and CLT01-38SQ7

STMicroelectronics unveils two high-speed digital-input current limiters claimed to benchmark new standards for circuit protection in factory automation. The SCLT3-8BQ7 and CLT01-38SQ7 provide industrial Programmable Logic Controllers(PLCs) – the “brains” of smart factories and industrial robots –with fast, robust protection against unwanted input-signal current spikes while reducing power consumption, board space, and component costs.

The new devices meld ST’s long-standing leadership in Transient Voltage Suppressors with its state-of-the-art packaging technology. Both devices are housed in the highly compact QFN-48L (7x7mm) package with a large exposed thermal pad that optimizes power dissipation at ambient temperatures greater than 100ºC.

Key technical features include:

  • 8 high-speed SPI protected outputs;
  • 8/16-bit high-speed SPI output;
  • High-side inputs with common ground;
  • Integrated 5V regulator;
  • 30V+ reverse polarity protection;
  • Energy-free LED output signal for visual status indication;
  • 78mW/channel power-dissipation capability;
  • Temperature/voltage alarm options.

The high-speed inputs and outputs are fully compliant with the requirements of best-in-classPLCs. The CLT01-38SQ7 also delivers robustness compliant with the most stringent international EMC (Electromagnetic Compatibility) standards such as IEC 61000-4.2, IEC61000-4.4, and IEC6100-4.5.

Availability

The SCLT3-8BQ7 and CLT01-38SQ7 are available in volume at $0.9 for 1,000-unit quantities. Also, evaluation boards are available for both the SCLT3-8BQ7 (STEVAL-IFP030V1) and the CLT01-38SQ7 (X-NUCLEO-PLC01A1).

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