SCLT3-8BQ7-TR

Current Regulation/Management Overview

The SCLT3-8BQ7-TR is an octal industrial digital input IC from STMicroelectronics designed to drastically reduce power dissipation in digital input modules. It features eight current-sinking inputs configurable for Type 1, Type 2, or Type 3 standards per IEC 61131-2. The device includes a serial interface, adjustable current limitation (2.35 mA typical), and integrated glitch/debounce filters with selectable delay times ranging from 20 µs to 3 ms. It supports a 35 V reverse polarity capability and operates within an ambient temperature range of -40 °C to 105 °C. Packaged in QFN-48L, it complies with IEC 61000-4-2 level 4 ESD standards.

Current Regulation/Management Feature Summary

• Configurable current-sinking inputs supporting IEC 61131-2 Type 1, 2, and 3 characteristics
• Integrated serializer and SPI-compatible serial interface with optional diagnostics
• Adjustable input current limitation for low power and heat dissipation
• Built-in glitch and debounce filter with selectable delay time for EMC robustness

Current Regulation/Management Applications

• Industrial digital input modules requiring low power dissipation
• PLC input interfaces compliant with IEC 61131-2 standards
• High-speed digital input systems with EMC requirements

Current Regulation/Management Procurement Notes

Verify the specific package variant, as the SCLT3 series is available in HTSSOP-38 and QFN-48L packages. Confirm that the ordering suffix corresponds to the required tape and reel configuration. Ensure compatibility with the target system's voltage levels and isolation channel requirements before procurement.

Current Regulation/Management Selection Notes

Select this component when designing industrial digital input circuits that require strict adherence to IEC 61131-2 standards while minimizing thermal output. Consider the integrated diagnostic capabilities and daisy-chain SPI functionality if reducing isolation channels is a priority. Evaluate the need for external components based on the chosen input type configuration.

Current Regulation/Management Part Context

The SCLT3 series represents STMicroelectronics' solution for high-efficiency digital input processing in industrial automation. It addresses the need for reduced heat dissipation in dense module designs while maintaining robust signal integrity through integrated filtering and current limiting mechanisms suitable for harsh electromagnetic environments.

Current Regulation/Management Replacement Considerations

No public confirmed substitute part numbers are documented. Verify pinout and functional compatibility if considering alternative octal digital input ICs from other manufacturers.