技术特性

• 8-input circuit in common ground low side topology
• Wide range input DC voltage VI: -30 V to 35 V
  • On state threshold : < 11 V with RI= 2.2 kΩ
  • Off state threshold: Iin> 1.5 mA or Vi> 5 V
  • Protected against -30 V reverse polarity
• 2.35 mA active current limiter with 10% tolerance
  • Drastic dissipation reduction:78 mW max. per input
• Input digital filter with adjustable delay:20 μs to 3 ms
• Energy-less LED visual status driver
• Input logic state transfer through a 2 MHz SPI
  • Programmable 8 / 16-bit register length
  • Multi SCLT connection in daisy chain
  • Chip temperature OTA and under voltage UVA alarms
  • Multi parity bits and power loss detection with stop bits
  • Drastic reduction of isolated coupler count and I/O of the field bus ASIC
• Power supply and input protection, RI= 2.2 kΩ:
  • IEC 61000-4-4 transient burst : ± 4 kV minimum
  • IEC 61000-4-5 voltage surge: ± 1 kV minimum
  • IEC 61000-4-2 ESD: ± 8 kV in contact:± 15 kV in air minimum
• Wide range power supply voltage VC:
  • + 9 V to + 35 V with 10 mA output current
  • Protected against -30 V reverse polarity

应用领域

• Digital inputs for programmable logic controller and decentralized I/O modules
• Digital input with serialized state transfer
• Enabling digital inputs to meet type 1 and 3 characteristics of IEC 61131-2
• EN60947-5-2 2-wire proximity sensor compatibility

功能框图