ACPL-M21L-000E

Overview

The ACPL-M21L-000E is a high-speed, low-power digital optocoupler manufactured by Broadcom Limited. It features a single channel with a data rate of 5 MBd and an isolation voltage of 3750 Vrms. The device utilizes a CMOS output stage and includes a built-in Schmitt trigger for noise immunity. Key electrical parameters include a typical rise/fall time of 11 ns, a peak forward voltage of 2 V, and a maximum propagation delay. It operates within a temperature range of -40°C to 105°C and is available in a 5-pin SOIC package.

Feature Summary

• Integrates a CMOS detector IC with a built-in Schmitt trigger input stage for enhanced signal integrity.
• Provides high common-mode transient immunity (CMTI) of 25 kV/µs for reliable operation in noisy environments.
• Features a push-pull, totem-pole output configuration capable of sourcing or sinking 10 mA.
• Designed for low power consumption while maintaining high-speed data transmission capabilities.

Applications

• Industrial communication interfaces requiring galvanic isolation.
• Data acquisition systems with high noise immunity needs.
• Power supply feedback loops for isolated control signals.
• General-purpose digital isolation in embedded systems.

Procurement Notes

Verify the specific suffix (e.g., 000E vs 500E) against your bill of materials, as packaging quantities may differ. Confirm RoHS compliance status directly from the manufacturer's latest datasheet before finalizing procurement. Ensure the 5-SOIC footprint matches your PCB design constraints. Cross-reference the component number with official Broadcom documentation to avoid counterfeit parts.

Selection Notes

Select this component when a single-channel, high-speed digital isolator is required with integrated Schmitt triggering. It is suitable for applications demanding 3750 Vrms isolation and 5 MBd data rates. Consider the 10 mA output drive capability for direct interfacing with logic inputs. Evaluate the operating temperature range (-40°C to 105°C) against environmental conditions.

Part Context

This part belongs to the ACPL series of optocouplers from Broadcom Limited. It is designed as a low-power alternative to standard speed optocouplers, offering improved performance in terms of data rate and power efficiency. The series is widely used in industrial and consumer electronics where reliable digital isolation is critical.

Replacement Considerations

Check for pin-compatible alternatives within the same ACPL family, such as the ACPL-M21L-500E, which may differ only in packaging. Verify that any substitute maintains the same 5 MBd data rate, 3750 Vrms isolation, and CMOS output characteristics to ensure functional equivalence.