MM5451BN

Display Drivers Overview

The MM5451BN is a monolithic LED display driver manufactured by Microchip Technology using an N-channel metal-gate MOS process. It provides 35 segment outputs with a 15 mA drive capability, designed for alphanumeric displays. The device features serial data input compatible with TTL logic levels and allows continuous brightness control via a single external resistor connected to the supply voltage. It operates within a wide power supply range of 4.75 V to 11 V and supports a 5-digit, 35-segment configuration without requiring multiplexing or additional load signals.

Display Drivers Feature Summary

• Serial data input interface compatible with most microprocessors
• Continuous brightness control via a single external resistor
• No requirement for additional load signals
• TTL logic level compatibility

Display Drivers Applications

• Industrial control indicators
• Relay drivers
• Digital clocks and thermometers
• Counters and voltmeters
• Instrumentation readouts

Display Drivers Procurement Notes

Verify the package type matches the design requirements, as the MM5451 series includes both DIP and PLCC variants. Confirm the specific suffix indicates the correct pinout and mechanical dimensions for the target PCB layout. Ensure the operating temperature range meets the environmental specifications of the final assembly. Cross-reference the manufacturer's latest documentation to confirm current production status and any potential obsolescence notices before finalizing procurement plans.

Display Drivers Selection Notes

Select the MM5451BN when a 35-segment output is required for alphanumeric LED displays. This part is suitable for designs needing serial interfacing and simple brightness adjustment without complex multiplexing circuitry. Consider the through-hole DIP packaging if prototyping or low-volume manufacturing requires ease of handling. Verify that the 15 mA output current is sufficient for the specific LED forward current requirements of the display module being utilized in the application.

Display Drivers Part Context

The MM5451 is part of a family of LED display drivers that includes the MM5450, which offers 34 segments. Both devices share similar fabrication processes and functional characteristics, differing primarily in the number of available segment outputs. The MM5451 variant is specifically designated for applications requiring the additional segment line compared to its counterpart.

Display Drivers Replacement Considerations

The MM5450 is a related component within the same family but provides only 34 segment outputs instead of 35. Verify that the missing segment does not impact the alphanumeric display requirements before substituting.