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PCLT-2AT4 Datasheet(PDF) 1 Page - STMicroelectronics |
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PCLT-2AT4 Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 18 page  Rev 1 November 2005 1/18 18 PCLT-2A Dual current limited over-voltage protected digital termination Applications ■ Type 1, 2 and 3 logic input termination for industrial automation ■ AS-Interface bus input termination ■ I/O termination in programmable logic controller ■ Proximity detector interface ■ Decentralized Input / Output modules Features ■ 2 channel topology – Low side input with common ground ■ Wide range input DC Voltage: –VI = - 0.3 to 30 V with RI = 0 Ω –VI = - 30 to 35 V with RI = 750 Ω ■ Current limiter: – 3 to 7.5 mA programmable reference –ILIM = 6.1 mA to 8.8 mA with RREF = 10 kΩ –ILIM = 2.8 mA to 4.3 mA with RREF = 22 kΩ – Narrow limiter spread: < 17 % – Temperature compensated operation ■ Output drive: – No output activation below 2 mA input current – 1.5 mA minimum output activating current in opto-coupler mode – Programmable CMOS output mode option (VMOD > 2.9 V) ■ LED drive for sensor status: 4.4 mA typical with RREF = 10 kΩ ■ Input protection (RI = 750 Ω CIN = 22 nF) ■ IEC61000-4-2 electrostatic discharge ESD, Level 4 – In contact, ± 8 kV; in air, ± 15 kV – Criteria B: temporary disruption ■ IEC61000-4-5 voltage surge, Level 3 – ± 500 V with 42 Ω series resistor in differential mode – Criteria B: temporary disruption ■ IEC61000-4-4 transient burst immunity – ± 4 kV peak voltage; 5 kHz repetitive rate – Criteria A: fully functional ■ IEC61000-4-6 conducted Radio Frequency Interference immunity –10 VRMS voltage – Criteria A: fully functional ■ Input protection against -30 V reverse polarity ■ Ambient temperature: -25 to 85 °C Benefits ■ Enable input to meet type1, 2 and 3 characteristics of IEC61131-2 standard ■ Compatible operation with 2 & 3 wires proximity sensor according EN60947-5-2 standard ■ Flexible configuration driving either opto coupler, or CMOS bus controller input, or 12 V AS-interface network ■ Reduced overall dissipation ■ Enhanced functional reliability ■ Compact with high integration ■ Surface Mount Package for highly automated assembly ■ Insensitive to the on state sensor impedance TSSOP14 Exposed pad www.st.com |
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