MAX6921AWI+T

Display Drivers Overview

The MAX6921AWI+T is a serial-interfaced vacuum fluorescent display (VFD) driver manufactured by Analog Devices Inc. under the Maxim Integrated brand. It features 20 outputs capable of driving VFD tubes with voltages ranging from 8 V to 76 V. The device operates on a low-voltage supply between 3 V and 5.5 V, consuming 1.65 mA of current. It supports clock frequencies up to 5 MHz and delivers a maximum output current of 75 mA per channel. Power dissipation is rated at 842 mW. The component is housed in a SOIC-Wide-28 package and functions within an extended temperature range of -40°C to +125°C.

Display Drivers Feature Summary

• Integrates 20 independent output channels for direct VFD segment and grid control
• Supports high-voltage operation up to 76 V for display elements
• Utilizes a simple serial interface for data and command transmission
• Includes internal voltage regulation and power management circuitry

Display Drivers Applications

• Vacuum fluorescent display tube drivers
• Industrial control panel displays
• Consumer appliance user interfaces
• Automotive instrument clusters

Display Drivers Procurement Notes

Verify the specific suffix AWI+T corresponds to the SOIC-Wide-28 package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation. Check for restricted supply conditions or obsolescence notices prior to finalizing procurement plans. Ensure compatibility with existing serial communication protocols used in the target system design.

Display Drivers Selection Notes

Select this component for designs requiring high-voltage VFD driving with minimal external components. Consider the SOIC-Wide-28 package for thermal and space constraints. Evaluate the 75 mA output capability against the specific current requirements of the target VFD segments. Verify that the serial interface timing aligns with the host microcontroller's capabilities.

Display Drivers Part Context

This part belongs to the MAX6921 series of VFD drivers designed for applications needing robust display control. It replaces older discrete driver solutions by integrating multiple functions into a single IC. The series is characterized by its ability to handle high voltages while maintaining low-power logic interface compatibility. It serves as a key component in systems utilizing vacuum fluorescent technology for clear visibility.

Display Drivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.