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CLT01-38S4：High speed protected digital termination array

CLT01-38S4 adds to the existing current limiter family. Still focusing on power consumption savings, the whole series allows each customer to find the right solution.

The CLT01-38S4 is an octal input termination device with a high speed SPI output. Its maximum input data rate is 400 kbps while the output SPI speed is 6.25 MHz.

As in previous versions, robustness is a key feature of CLT01-38S4. The product is compliant with surge standards defined in IEC 61000-4-x.

It can run all types of sensor according to IEC 61131-2. Type 1 and 3 with a 2.35 mA limited current and type 2 using two inputs per sensor with the correct R_REF.

Key Features

• 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
• Typical ILIM = 2.1 to 2.6 mA adjustable current limiters
• Tight current tolerance including temperature compensation: ±10%
• Serial output with an SPI communication bus
• Clock frequency up to 6.25 MHz
• CPHA = CPOL = 0 bus master operation
• Multi CLT operation in daisy chain connection
• 16-bit mode: 8 bits for data / 8 bits for control
  • Minimum capture time: 4 μs
  • Input data rate: 200 kbps/100 kHz
  • Minimum propagation transfer time: 7 μs
• 8-bit mode: 8 bits for data
  • Minimum capture time: 2.5 μs
  • Input data rate: 400 kbps/200 kHz
  • Minimum propagation transfer time: 4 μs
• VCC = -0.3 to +35 V with RC = 2.2 kΩ
• Ambient temperature range: -25 to +85°C
• Digital inputs for programmable logic controller and decentralized I/O modules
• Benefits
  • Enables input to meet type 1, 2 and 3 characteristics of IEC 61131-2 standard
  • Compatible operation with 2 wires proximity sensor according EN 60947-5-2 standard
  • Compact board with surface mount integration and reduced count of isolated couplers
  • Reduces the count of input-output of the bus controller circuit
  • Provides energy-less input LED visual status
  • Enhanced functional reliability
  • Built-in over voltage robustness and immune data transfer
  • Reduced dissipation: 78 mW max. per channel
• Complies with following standards (RI = 2.2 Ω, RC = 2.2 Ω, C = 33 nF):
  • Input: ±15 kV
  • Power supply: ±2.5 kV
  • Voltage surge IEC 61000-4-5
    • Input: ±15 kV
    • Power supply: ±2.5 kV

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