M5451B7

Display Drivers Overview

The M5451B7 is a monolithic MOS integrated circuit manufactured by STMicroelectronics using N-channel silicon gate technology. It functions as an LED display driver designed for segment displays with common-anode configuration. The device provides 35 outputs capable of sinking 15mA each, eliminating the need for external current-limiting resistors. It features serial data input and continuous brightness control. The component operates with wide supply voltage tolerance and maintains TTL compatibility. It is housed in a 40-pin plastic dual in-line package (PDIP40).

Display Drivers Feature Summary

• Integrated current generator outputs requiring no external resistors
• Serial data input interface for simplified connection
• Continuous brightness control capability
• TTL compatible logic levels

Display Drivers Applications

• Microprocessor displays
• Industrial control indicator relay drivers
• Instrumentation readouts

Display Drivers Procurement Notes

Verify the specific suffix B7 to confirm the package type and temperature range against the official datasheet. Ensure the design supports common-anode LED configurations. Confirm that the serial interface timing requirements align with the host controller specifications. Check for RoHS compliance status if environmental regulations apply to the final assembly.

Display Drivers Selection Notes

Select this component when driving segment LEDs without external current limiting components is required. It is suitable for applications needing serial data input and brightness adjustment. Consider the 40-pin DIP package constraints for PCB layout. Verify that the 15mA sink current per output meets the LED drive requirements.

Display Drivers Part Context

The M5451B7 belongs to the M5450/M5451 family of LED display drivers from STMicroelectronics. These devices are part of the analog mixed-signal IC category, specifically within drivers and interfaces. They utilize standard N-channel silicon gate technology for reliable operation in various industrial and consumer electronic environments.

Display Drivers FAQ

Does the M5451B7 require external resistors for LED current limiting?

No, the M5451B7 includes an internal current generator that provides 15mA sink current per output, eliminating the need for external resistors.

What type of LED display configuration does the M5451B7 support?

The M5451B7 is designed for common-anode LED displays.