PCLT-2AT4-TR

STMICROELECTRONICS  PCLT-2AT4-TR  静电保护装置, TVS, TSSOP, 14 引脚

The is a dual current limited overvoltage protected Digital Termination Device designed for 24VDC automation applications. It is compatible with the type 2 7.5mA or type 3 3mA characteristic of the IEC 61131-2 standard. An internal resistance RREF allows the limiting current value to be adjusted from 3 to 7.5mA. Each input voltage clamping block protects the module input against electromagnetic interference such as those described in the IEC 61131-2 standard, IEC 61000-4-2 ESD, 4-4 transient burst, 4-5 voltage surge and 4-6 conducted radio frequency interference standards. The supply input is also designed with such a protection structure. The low tolerance of the current limitation allows a drastic reduction in the dissipation of the input compared to a resistive input. The output block of each termination channel transfers the input logic state to a logic output and a light emitting diode LED.

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2-channel Topology, low side input with common ground

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LED drive for sensor status - 4.4mA typical with RREF = 10kR

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Input protection RI= 750R, CIN = 22nF

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IEC 61000-4-2 ESD, level 4 - in contact ±8kV; in air ±15kV

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IEC 61000-4-5 voltage surge, Level 3 - ±500V with 42R series resistor in differential mode

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IEC 61000-4-4 transient burst immunity - ±4kV peak voltage, 5kHz repetitive rate

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IEC 61000-4-6 conducted RFI - 10VRMS

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Input protection against -30V reverse polarity

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Enable input to meet type1, 2 and 3 characteristics of IEC 61131-2 standard

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Compatible operation with 2 and 3 wires proximity sensor according EN60947-5-2 standard

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Reduced overall dissipation

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Enhanced functional reliability

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Compact with high integration

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Surface mount package for highly automated assembly

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Insensitive to the on-state sensor impedance

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-25 to 150°C Junction temperature range