ACPL-021L-500E

Overview

The ACPL-021L-500E is a high-speed digital CMOS 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 push-pull totem pole output capable of sourcing or sinking 10 mA. Electrical characteristics include a typical forward current of 2.2 mA, a maximum forward voltage of 1.5 V, and propagation delays of 250 ns for both low-to-high and high-to-low transitions. It operates within a temperature range of -40°C to +105°C and is housed in an 8-pin SOIC package.

Feature Summary

• High-speed digital CMOS architecture supporting 5 MBd data rates
• Push-pull totem pole output configuration for active drive capability
• Wide operating temperature range from -40°C to +105°C
• Integrated photodiode input with low power consumption

Applications

• Low isolation requirements in high-speed logic systems
• Computer peripheral interface circuits
• Microprocessor communication interfaces

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct packaging and RoHS compliance status. Confirm that the 8-pin SOIC package variant matches the intended PCB footprint. Cross-reference the datasheet revision history to validate electrical parameters such as propagation delay and isolation ratings before finalizing component selection.

Selection Notes

Select this component when a single-channel high-speed interface with moderate isolation is required. The push-pull output eliminates the need for external pull-up resistors, simplifying circuit design. Ensure the application does not exceed the specified 5 MBd data rate or the thermal limits defined in the datasheet. Verify compatibility with the driving logic levels and load requirements.

Part Context

This part belongs to the ACPL series of optocouplers designed for digital signal transmission. It provides galvanic isolation between input and output circuits while maintaining high-speed performance. The series includes variants with different packages and speeds, but this specific model focuses on balancing speed and power efficiency in standard industrial and computing applications.

Replacement Considerations

The ACPL-M21L-500E is a documented alternative offering similar 5 MBd performance in a surface-mount SO-5 package. Verify pinout compatibility and isolation voltage specifications when substituting. Check if the change in package size affects the mechanical constraints of the target assembly.