MAX6921AUI+T

Display Drivers Overview

The MAX6921AUI+T is a serial-interfaced Vacuum Fluorescent Display (VFD) driver manufactured by Analog Devices Inc./Maxim Integrated. It features 20 outputs capable of driving VFD tubes with high voltage requirements up to 76 V. The device operates on a low-voltage logic supply ranging from 3 V to 5.5 V and supports clock frequencies up to 5 MHz. Packaged in a TSSOP-28 surface-mount format, it functions within an industrial temperature range of -40°C to +125°C.

Display Drivers Feature Summary

• Integrates 20 independent output channels designed specifically for driving vacuum fluorescent display tubes.
• Utilizes a serial interface architecture to minimize microcontroller pin usage and simplify board layout.
• Supports high-voltage operation for direct tube drive without requiring external high-side drivers.

Display Drivers Applications

• Driving multi-digit vacuum fluorescent displays in consumer appliances
• Panel indicators in industrial control systems
• Display modules in automotive instrumentation

Display Drivers Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging rather than tube packaging when sourcing components. Confirm RoHS compliance status through official manufacturer documentation as regulatory requirements may vary by region. Ensure the supplier provides valid traceability records for quality assurance purposes.

Display Drivers Selection Notes

Select this component when a design requires direct drive for multiple VFD segments using minimal digital I/O lines. Consider the TSSOP-28 package constraints regarding thermal dissipation and PCB space. Evaluate the 76 V output capability against the specific voltage ratings of the target display tube to ensure safe operation margins.

Display Drivers Part Context

This part belongs to the MAX6921 series of VFD drivers, which are optimized for applications requiring high brightness and contrast in vacuum fluorescent displays. The series is characterized by its ability to handle high voltages while maintaining low power consumption at the logic interface level.

Display Drivers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify compatibility with existing firmware and hardware layouts before considering alternative devices.