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Current limiters for fast digital automation inputs
CLT01-38S4 400 kbit/s datarate for fast sensors and high-speed sampling digital inputs
www.st.com
The CLT01-38S4 adds to the existing current-limiter family, with the same concern for power consumption savings, to give you a full range of solutions.The CLT01-38S4 is an octal input termination device with a high- speed SPI output. Its maximum input datarate is 400 kbit/s while the SPI output rate is 6.25 MHz.As for previous CLT devices, robustness is a key parameter for the CLT01-38S4, with compliance to IEC 61000-4-x surge standards.The CLT01-38S4 runs with 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 RREF.
KEY BENEFITSRobustness
• IEC61000-4-2• ±8kVcontact• ±15kVair
• IEC61000-4-4• ±4kV
• IEC61000-4-5• 2.5kV
• Reversepolarity(-30V)
Speed
• 8-bitmode,400kbit/sinputdatarate
• 16-bitmode,200kbit/sinputdatarate
Energy harvesting
• LEDpoweredwithunusedcurrent
• LEDpoweredonlyinon-state
• AdjustableILIM,withtypical2.1mAto
2.6mAatRREF=15kΩ
• 1WsavedperCLT01-38S4
MAIN APPLICATIONS• Factoryautomation
• Buildingautomation
• RemoteIOcontrollers
• Proximitysensorinterfaces(EN60947-5-2)
SpeedOut: 6.25 MHz
SpeedIn: 400 kbit/s
Energy harvesting LED status
RobustnessIEC 61000-4 x compliant
Serializer
VR
VR
CLT01-38S4 WIRING DIAGRAM
xCLT product CLT3-4BT6 PCLT-2AT4 SCLT3-8BT8 CLT01-38S4
Number of inputs 4 2 8 8
Input IEC 61131-2 Type 1 and 3 Type 1, 2 and 3 Type 1, 2 and 3 Type 1, 2 and 3
Output type IsolatedIsolated
Non-isolatedIsolated
Non-isolatedSPI serialized transfer
IsolatedNon-isolated
SPI serialized transfer
Output drive Opto transistorOpto transistor
CMOS compatible
Opto transistorElectromagnetic isolator
CMOS compatible
Opto transistorElectromagnetic isolator
CMOS compatible
Input current limiter 2.8 mA 2.5 to 7.5 mA 2.35 mA 2.35 mA
Current tolerance 25% 18% 10% 10%
Front-end LED status Yes, using type 1 Yes Yes Yes
Surge level > 1 kVType 3: 1 kV
Type 2: 0.5 kV> 1 kV > 1 kV
ESD level 8 kV 15 kV 15 kV 15 kV
Package TSSOP-20 TSSOP-14 HTSSOP-38 HTSSOP-38
Input datarate 10 kbit/s 10 kbit/s 40 kbit/s 400 kbit/s
Evaluation board STEVAL-IPF008V1 STEVAL-IPF004V1 STEVAL-IPF007V1 STEVAL-IPF023V1
Application note AN2527 AN2482 AN2846 and AN3031 -
• Input datarate @ 400 kbit/s• Scalable (daisy chain)
• Thermal alarm• Overvoltage alarm• Undervoltage alarm
• SPI interface• CMOS interface• (Opto-)coupler interface
• Programmable current
• Digital filtrer• Reverse polarity• ESD protection• Current limiter
• Number of channels
• Sensors (IEC 61131-2) • Type 1 • Type 2 • Type 3
Immun
ity
CLT3-4B
PCLT-2A
CLT01-38S4
24 8 8
Outpu
tCo
ntrol
HTSSOP38
Quad Quad
SCLT3-8BT8
TSSOP14
TSSOP20
CURRENT-LIMITING TERMINATION (CLT) SERIES
UVA SPIV
CSRS
RPD
VCCVC
RC
VI
RIVIN IN1
IN8
8-inputType 1/3
CLT
LD8LD1
REF
Voltageregulator
VDD
COMS
CLT01-38S4
8/16-bitState transferSPI
CPHA = 0CPOL = 0 MOSI
SPM
O-T = opto-transistor or isolator
MISO
/CS
SCK
Fiel
d bu
sCo
ntro
ller
COMP
DVR
O-T
O-T
O-T
RREF
© STMicroelectronics - March 2013 - Printed in United Kingdom - All rights reservedThe STMicroelectronics corporate logo is a registered trademark of the STMicroelectronics group of companies
All other names are the property of their respective owners
For more information on ST products and solutions, visit www.st.comOrder code: FLCLIMITERS0313