MIC5822BN

Overview

The MIC5822BN is an obsolete 8-bit serial-input latched driver manufactured by Microchip Technology. It features a 1:8 input-to-output ratio with bipolar current-sink Darlington outputs capable of handling up to 500mA per channel. The device operates within a supply voltage range of 3.5V to 15V and supports load voltages up to 80V. Designed for through-hole mounting, it utilizes a 16-DIP package (0.300 inch width). The component functions as a low-side switch driver with latch-type switching logic, suitable for applications requiring high-current sinking capabilities controlled via serial data inputs.

Feature Summary

• Integrates an 8-bit CMOS shift register with control circuitry and data latches for serial input processing
• Utilizes bipolar current-sink Darlington output stages for high-current driving capability
• Provides latched output configuration to maintain state without continuous signal input
• Supports low-side switching operations with independent channel control

Applications

• Industrial control systems requiring high-current load switching
• Relay and solenoid drive circuits in automation equipment
• LED matrix drivers for display applications
• Motor control interfaces for small DC motors

Procurement Notes

Verify component obsolescence status prior to procurement as the MIC5822BN is officially discontinued. Confirm RoHS compliance requirements since this specific variant may not meet current environmental standards. Ensure design-in compatibility with the recommended replacement part MIC5822YN, verifying pinout and electrical parameter alignment. Request updated datasheets from authorized distributors to confirm final specifications and availability timelines for substitute components.

Selection Notes

Select this component only for legacy system maintenance or repair where original specifications are mandatory. Evaluate the MIC5822YN as the primary direct replacement due to identical functional architecture and pin compatibility. Consider interface timing requirements and supply voltage ranges when transitioning between variants. Assess thermal management needs given the bipolar output structure and current ratings. Validate that the 16-DIP package fits existing PCB footprints if redesigning for new production runs.

Part Context

The MIC5822 belongs to Microchip's family of 8-bit serial-input latched drivers, designed for interfacing digital logic with high-power loads. It complements the MIC5821 series, offering enhanced current handling through its Darlington output stage. This series is commonly used in applications requiring reliable latching behavior and robust output switching. The BN suffix indicates a specific package and temperature rating configuration within the broader product line.

Replacement Considerations

The MIC5822YN is the confirmed direct replacement for the MIC5822BN. Both parts share identical pinouts and functional specifications, ensuring drop-in compatibility. Verify that the YN variant meets any updated environmental compliance requirements necessary for the application.