CLT01-38S4 High speed protected digital termination array Data brief 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 CLT01-38S4 HTSSOP-38 Reduces the count of input-output of the bus controller circuit Features Provides energy-less input LED visual status Enhanced functional reliability 8-input circuit in common ground low side topology Built-in over voltage robustness and immune data transfer Wide range input DC voltage V : -30 V to 35 V I Reduced dissipation: 78 mW max. per channel On state threshold: < 11 V with R = 2.2 k I Off state threshold: I > 1.5 mA or V > 5 V in i Complies with following standards Protected against -30 V reverse polarity (R =2.2 , R =2.2, C = 33 nF): I C Typical I = 2.1 to 2.6 mA adjustable current LIM Electrostatic discharge, IEC 61000-4-2: limiters 8 kV contact discharge Tight current tolerance including temperature 15 kV air discharge compensation: 10% (a) Electrical transient immunity IEC 61000-4-4 : Serial output with an SPI communication bus F = 6.25 MHz, 3 kV SCK Clock frequency up to 6.25 MHz F = 10 kHz, 4 kV SCK C = C = 0 bus master operation PHA POL Voltage surge IEC 61000-4-5 Multi CLT operation in daisy chain connection Input: 15 kV 16-bit mode: 8 bits for data / 8 bits for control Power supply: 2.5 kV Minimum capture time: 4 s Input data rate: 200 kbps/100 kHz Applications Minimum propagation transfer time: 7 s Programmable logic controller and 8-bit mode: 8 bits for data decentralized input modules Minimum capture time: 2.5 s High speed protected termination for digital Input data rate: 400 kbps/200 kHz input with serialized SPI output Minimum propagation transfer time: 4 s IEC 61131-2 type 1, 2 and 3. V = -0.3 to +35 V with R = 2.2 k CC C Ambient temperature range: -25 to +85C a. With 470 pF grounded on CS and 100 pF grounded on Digital inputs for programmable logic controller CLK and decentralized I/O modules April 2013 DocID024384 Rev1 1/8 For further information contact your local STMicroelectronics sales office. www.st.com 8Description CLT01-38S4 1 Description 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 2 Characteristics 2.1 Simplified block diagram Figure 1. Simplified block diagram V DD DVR MISO, /MISO control V DD MISO /MISO IN 1 V R Write 8 lines LD 8 lines 1 V DD V <V IN R MOSI Shift COMP P VDD Capture SCK V DD Current REF reference MOSI /CS V DD Shift 16- bit Parity SPM 4 lines bits generator V C Power Power supply reset V DD Under voltage Over temperature V CS alarm alarm 2/8 DocID024384 Rev1 For i = 1 to 8 Logic control 8 lines Input state register Control state register Data state register Transfer logic