MM5451YN

Display Drivers Overview

The MM5451YN is a monolithic N-channel metal-gate MOS LED display driver designed for alphanumeric output. It provides 35 segment outputs with a 15 mA drive capability, supporting up to five digits. The device features serial data input compatible with TTL logic levels and operates within a wide power supply range of 4.75 V to 11 V. Brightness control is achieved via a single external variable resistor connected between the reference pin and VDD. The component is housed in a 40-pin dual in-line package (DIP) and supports an operating temperature range from -40°C to +85°C.

Display Drivers Feature Summary

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

Display Drivers Applications

• Industrial control indicators
• Relay drivers
• Digital clocks
• Thermometers and counters
• Voltmeter instrumentation readouts

Display Drivers Procurement Notes

Verify the specific suffix 'YN' corresponds to the 40-pin DIP package configuration rather than other available packages such as PLCC or tape-and-reel variants. Confirm that the manufacturing source is Microchip Technology, as the original design originated from Micrel. Ensure the procurement channel supplies genuine components to avoid counterfeit risks associated with legacy MOS technology parts.

Display Drivers Selection Notes

Select the MM5451YN when a through-hole DIP solution is required for PCB layouts incompatible with surface-mount packages. This model is appropriate for applications needing 35-segment alphanumeric displays driven by serial interfaces. Consider the 15 mA output current limit for LED selection and ensure the system voltage falls within the specified 4.75 V to 11 V operational window.

Display Drivers Part Context

The MM5451 is part of the MM5450 series of LED display drivers, distinguished by its 35-segment output capacity compared to the 34-segment MM5450. Both devices utilize the same N-channel metal-gate process technology. The MM5451 series is widely used in digital instrumentation where alphanumeric characters are displayed alongside numeric values, providing a cost-effective solution for driving common-anode LED arrays.

Display Drivers FAQ

Does the MM5451YN require a separate load signal?

No, the MM5451YN does not require an additional load signal for operation.

How is the LED display brightness controlled?

Brightness is continuously controlled by connecting a variable resistor between the reference pin and the power supply VDD.