MM5450BN

Display Drivers Overview

The MM5450BN is a monolithic LED display driver manufactured by Microchip Technology, designed for driving alphanumeric displays. It features a serial data input interface compatible with most microprocessors and operates within a wide power supply voltage range of 4.75V to 11V. The device provides 34 segment outputs with a 15mA drive capability and supports continuous brightness control via a single pin. It functions in an industrial temperature range of -40°C to 85°C and consumes 10mA of supply current. The component is housed in a 40-pin DIP package.

Display Drivers Feature Summary

• Supports continuous brightness control through a simple variable resistor connection on a dedicated pin.
• Features a serial data input mode that allows direct interfacing with standard microprocessor systems without requiring additional load signals.
• Provides TTL level compatibility for straightforward logic integration.

Display Drivers Applications

• Industrial control system displays
• Digital clock readouts
• Thermometer instrumentation
• Voltage meter displays

Display Drivers Procurement Notes

Verify the specific suffix requirements for your design, as the MM5450BN is marked as obsolete. Confirm that the 40-DIP package aligns with your PCB layout constraints. Check RoHS compliance status, as older revisions may not meet current environmental standards. Ensure the serial interface timing matches your controller specifications before finalizing the procurement plan.

Display Drivers Selection Notes

Select this component when a dedicated serial LED driver with high current output is required for alphanumeric displays. Consider the MM5450YV variant if surface mount packaging is preferred over the through-hole DIP format. Evaluate the MM5451 series if 35-segment output capability is necessary instead of the 34-segment configuration provided by the MM5450.

Display Drivers Part Context

The MM5450 belongs to the MM5450/51 series of LED display drivers fabricated using N-channel metal-gate MOS technology. This process combines low-threshold enhancement-mode devices with ion-implanted depletion-mode devices. The series is designed for applications requiring reliable alphanumeric display driving with minimal external components.

Display Drivers Replacement Considerations

The MM5450YN is listed as a direct substitute from Microchip Technology. For similar functionality, the MAX6956AAI+ from Analog Devices Inc./Maxim Integrated is available, though it utilizes a different package and interface architecture.