M74HC4028B1R

Overview

The M74HC4028B1R is a high-speed CMOS BCD to decimal decoder manufactured using silicon gate C2MOS technology. It converts four binary-coded decimal inputs into one of ten active-high outputs. The device operates within a supply voltage range of 2V to 6V and features low power dissipation with a maximum quiescent current of 4μA at 25°C. It provides high noise immunity, symmetrical output impedance, and balanced propagation delays. The component includes input protection circuits against static discharge and transient excess voltage.

Feature Summary

• Converts four-bit binary coded decimal inputs into one of ten decoded outputs
• Features high speed operation with typical propagation delay of 20ns at 6V
• Provides high noise immunity with minimum thresholds of 28% VCC
• Includes protection circuits for inputs against static discharge

Applications

• Code conversion systems
• Address decoding logic
• Memory selection circuits
• Demultiplexing applications
• Readout decoding interfaces

Procurement Notes

Verify the obsolete status of this specific part number before procurement planning. Confirm availability through authorized distributors or alternative sources. Ensure that any substitute components maintain pin and function compatibility with the original design requirements. Review updated datasheets for any changes in mechanical dimensions or electrical characteristics when sourcing replacements.

Selection Notes

Select this component for designs requiring direct binary coded decimal to decimal translation. It is suitable for applications needing high noise immunity and low power consumption. Consider the wide operating voltage range for flexibility in different circuit environments. Verify package compatibility during integration to ensure proper physical fit on the printed circuit board.

Part Context

This device belongs to the 74HC series of high-speed CMOS logic devices. It is functionally compatible with standard 74 series 4028 implementations. The product line utilizes silicon gate C2MOS technology to achieve performance metrics while maintaining low power dissipation standards typical of modern CMOS logic families.

Replacement Considerations

Check for pin-compatible alternatives from other manufacturers if the original part is unavailable. Ensure replacement parts meet the same voltage and temperature specifications.