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16-bit PLC digital input card demonstration board based on the SCLT3
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The STEVAL-IFP07V1 demonstration board is based on the SCLT3-8 protected digital input termination with serialized state transfer, and allows the user to evaluate the behavior of the SCLT3-8 device in industrial environmental conditions.

The SCLT3-8 is an eight channel termination used to interface automation digital inputs. It is designed for 24 VDC applications, and supports the type 3 input characteristic in accordance with standard IEC61131-2 (programmable controllers).

The device integrates an SPI peripheral for communication with logic devices, ASICs and microcontrollers.

This demonstration board is capable of transferring not only the data but also additional information such as thermal alarms, under voltage indications and parity bits. The STEVALIFP07V1 is ideal for applications with a high channel count, while the serial communication reduces the number of lines which, in most final applications, require galvanic isolation.

The board accommodates two SCLT3-8 chips connected to the SPI bus in a "daisy-chain" configuration. It offers a 16-bit digital input interface and indicates each sensor logic state with an LED.

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Data Brief

Key Features

  • 8/16 input channel topology (SCLT3-8 chip/STEVAL-IFP007V1 board)
  • Fully integrated current limiter
  • Termination for IEC61131-2 type 1 and 3 inputs
  • Digital filter in each input
  • SPI communication peripheral
  • Voltage regulator integrated on the chip
  • Thermal alarm
  • Wide range supply voltage operation


Design Resources


Technical Documentation

Product Specifications

Description Version Size
DB0767: 16-bit PLC digital input card demonstration board based on the SCLT3
2.1 178 KB

Application Notes

Description Version Size
AN3031: SCLT3-8 input termination demonstration board STEVAL-IFP007V1
1.2 1,372 KB

Hardware Resources

Board Manufacturing Specification

Description Version Size
STEVAL-IFP007V1 gerber files
2.1 116 KB

Bill of Materials

Description Version Size
1.0 8 KB

Schematic Pack

Description Version Size
STEVAL-IFP007V1 schematics
2.1 54 KB

Sample & Buy

Part Number Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-IFP007V1ActiveSCLT3-8BT8Buy Direct117.6Distributor reported inventory date: 2016-02-09
Distributor NameRegionStockMin. order
Newark Element14Order NowAMERICA10

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
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