M5451Q

Display Drivers Overview

The M5451Q is a monolithic MOS integrated circuit manufactured by STMicroelectronics using N-channel silicon gate technology. It functions as an LED display driver designed for 4 or 5-digit displays. The component is housed in a 40-pin dual in-line plastic package (DIP). This device integrates the necessary logic and drive capabilities to control multi-digit LED segments directly.

Display Drivers Feature Summary

• Monolithic MOS construction utilizing N-channel silicon gate technology
• Integrated driver capability for 4 or 5-digit LED displays
• Available in a standard 40-pin dual in-line plastic package

Display Drivers Applications

• Multi-digit LED numeric display systems
• Industrial instrumentation readouts
• Consumer electronic display interfaces

Display Drivers Procurement Notes

Verify the specific datasheet revision and pinout configuration before integration, as legacy components may have variant specifications. Confirm that the 40-pin DIP footprint matches the target PCB design. Check current lifecycle status, as this part is listed as obsolete by major distributors, which may impact long-term supply chain stability and availability of new units.

Display Drivers Selection Notes

Select this component when a dedicated, single-chip solution for driving 4 to 5 digits of LED displays is required without external multiplexing complexity. Ensure the application voltage levels are compatible with the N-channel silicon gate technology characteristics. Consider the physical size constraints of the 40-pin DIP package during mechanical design.

Display Drivers Part Context

The M5451Q belongs to the M545x series of display drivers from STMicroelectronics. It is closely related to the M5450 model, sharing similar underlying technology and packaging options. These components represent older generation discrete driver solutions intended for direct segment control in alphanumeric display applications.

Display Drivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Due to the obsolete lifecycle status, alternative sourcing requires careful verification of functional equivalence and pin compatibility with existing designs.