MM74C928N

Display Drivers Overview

The MM74C928N is a monolithic CMOS integrated circuit designed for driving multiplexed LED displays. It integrates four BCD-to-decimal counters with demultiplexed outputs and four digit scanning circuits. The device features high segment sourcing current capability, allowing direct drive of LED segments without external buffer amplifiers. It operates within a wide supply voltage range and provides high noise immunity suitable for digital display applications.

Display Drivers Feature Summary

• Integrates four BCD-to-decimal counters with demultiplexed outputs
• Includes four digit scanning circuits for multiplexed display control
• Provides high segment sourcing current for direct LED drive
• CMOS technology ensures low power consumption and high noise immunity

Display Drivers Applications

• Multiplexed LED numeric displays
• Digital counter systems
• Display driver interfaces

Display Drivers Procurement Notes

Verify component status as the MM74C928N is listed as obsolete by manufacturers such as onsemi. Confirm availability through authorized distributors or surplus suppliers. Ensure replacement components maintain pinout compatibility and electrical specifications for seamless integration into existing designs.

Display Drivers Selection Notes

Select this component for applications requiring integrated counting and display driving in a single package. Consider the 18-pin PDIP package for through-hole mounting. Evaluate the high segment sourcing current against display brightness requirements to determine if additional buffering is necessary for specific LED configurations.

Display Drivers Part Context

The MM74C928N belongs to the Fairchild Semiconductor MM74C series of CMOS logic devices. This family offers compatibility with standard 74 logic pinouts while providing improved performance characteristics typical of CMOS technology, including wider operating voltage ranges and lower power consumption compared to earlier TTL equivalents.

Display Drivers Replacement Considerations

• MM74HC928
• MM74HCT928

Display Drivers FAQ

What is the maximum segment sourcing current?

The datasheet specifies a high segment sourcing current capability, typically rated at 40 mA per segment output.

Does the MM74C928N include internal pull-up resistors?

No, the MM74C928N does not include internal pull-up resistors; external components may be required depending on the specific circuit design.