Product overview
Description
The SCLT3 series is an octal industrial digital input IC which drastically reduces the power dissipation of the digital input modules. Its current-sinking inputs can be configured for Type 1, Type 2, or Type 3 inputs as per IEC 61131-2 with few external components.
The SCLT3 series includes a serial interface which translates, conditions and serializes the data to CMOS-compatible signals through SPI. Combining its daisy-chaining capability with its accurate current limitation, the SCLT3 series enhances the I/O module’s density by cutting the power dissipation and reducing the number of optocouplers.
The SCLT3 series can be evaluated thanks to the STEVAL-IFP030V1 evaluation board. For detailed application guidelines refer to AN2846.
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All features
- Eight current-sinking digital inputs with serializer
- Enables inputs to meet type 1, 2 and 3 characteristic of IEC 61131-2 standard
- Adjustable and accurate input current limitation for low power and heat dissipation:
- 2.35 mA typ for Type 1 and Type 3
- Integrated glitch and debounce filter with selectable delay time: 20 µs to 3 ms for EMC robustness
- 35 V reverse polarity capable
- SPI-Compatible Serial Interface 8-bit
- Optional 16-bit mode with parity check, and diagnostics (temperature alarm, voltage alarms)
- Daisy-Chain SPI to reduce isolation channels
- 5 V voltage regulator
- Energyless Field-Side LED drivers for visual status indication
- Operating ambient temperature range from -40 °C to 105 °C
- Packages
- HTSSOP-38 – 500 µm pitch
- QFN-48L – 500 µm pitch
- Complies with the following standards:
- IEC 61000-4-2 level 4: ±15 kV (air discharge)
- IEC 61000-4-2 level 4: ±8 kV (contact discharge)
- IEC 61000-4-5 Surge ±1 kV /42 Ω with minimum 1 kΩ pulse resistor at field inputs
Circuit Diagram
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EDA Symbols, Footprints and 3D Models
STMicroelectronics - SCLT3-8BT8
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All resources
| Resource title | Version | Latest update |
|---|
CAD Symbol & Footprint models (2)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| ZIP | 1.1 | 21 Jun 2021 | 21 Jun 2021 | |
| ZIP | 1.0 | 21 Jun 2021 | 21 Jun 2021 |
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| SCLT3-8BT8 | Active | TSSOP-38L | Industrial | Ecopack2 | |
| SCLT3-8BT8-TR | Active | TSSOP-38L | Industrial | Ecopack2 |
(**) The Material Declaration forms available on st.com 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.
Sample & Buy
| Part Number | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SCLT3-8BT8-TR | | | distributors No availability of distributors reported, please contact our sales office | ||||||||||
| SCLT3-8BT8 | | | distributors No availability of distributors reported, please contact our sales office |
SCLT3-8BT8-TR Active
SCLT3-8BT8 Active
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors