STMicroelectronics’ industrial digital input current limiter converts a 24 V digital industrial input to a 3 mA current
STMicroelectronics’ CLT03-1SC3 is an industrial digital input current limiter that converts a 24 V digital industrial input to a 3 mA (typ) current for driving optical isolators or non-isolated LVTTL digital input termination.
Type 1 and Type 3 inputs with minimum power dissipation
Self-powered, eliminating the need for an external field-side power supply
No power consumption in off state
Able to interface high side or low side sensors (sinking or sourcing inputs)
Optocoupler and CMOS compatible interfaces
Wide input voltage range, up to 60 V
Configurable test pulse generator for safety applications
Complies with IEC 61000-4-2: ±2 kV contact and ±4 kV air
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