MIC5891YWM

Overview

The MIC5891YWM is an 8-bit serial-input latched source driver manufactured by Microchip Technology. It features a 1:8 input-to-output ratio and supports bipolar outputs with a maximum current of 500mA per channel. The device operates within a load voltage range of 5V to 50V and requires a supply voltage between 4.5V and 15V. Designed for surface mount installation, it utilizes a 16-SOIC package (7.50mm width). The component functions as a latch driver with non-inverted input logic and parallel/serial interface capabilities, suitable for high-voltage applications across an operating temperature range of -55°C to 125°C.

Feature Summary

• Integrates eight CMOS data latches with control circuitry for high-voltage, high-current driving
• Supports serial input configuration with rising-edge triggering for data latching
• Provides bipolar output configuration optimized for high-side switching applications

Applications

• High-voltage load driving in industrial automation systems
• Interface circuits for relay or solenoid control requiring latched states
• Power distribution management in telecommunications equipment

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct packaging and variant selection. Confirm that the required operating temperature range and electrical parameters align with the system design specifications before procurement. Cross-reference the datasheet revision history to account for any potential changes in pinout or electrical characteristics associated with recent manufacturing updates.

Selection Notes

Select this component when a single serial input must drive multiple independent high-voltage loads with latched state retention. Ensure the application voltage does not exceed the 50V limit and that the peak current requirements remain within the 500mA per-channel specification. Consider the 16-SOIC footprint constraints and thermal dissipation requirements for the intended surface-mount assembly process.

Part Context

The MIC5891 belongs to the MIC5891 series of latched drivers produced by Microchip Technology, formerly Micrel. This family addresses the need for robust, high-current switching solutions controlled via simple serial interfaces. The device replaces discrete transistor arrays by integrating latching logic and power drivers into a single compact package, simplifying board layout and reducing component count in high-side switching designs.

Replacement Considerations

Consult the official Microchip cross-reference documentation for verified substitute part numbers. Do not assume functional compatibility with other series without verifying pinout, electrical ratings, and logical interface specifications.