4528BDM

Overview

The CD4528BDM is a dual monostable multivibrator integrated circuit manufactured by National Semiconductor. It operates within the CMOS logic family and is housed in a 24-pin ceramic Dual In-Line Package (DIP). The device is designed for military temperature specifications, supporting an operating range from -55 °C to 125 °C. It features a nominal supply voltage of 5 V and provides three-state output characteristics with a maximum low-level output current of 0.032 A.

Feature Summary

• Dual monostable multivibrator configuration
• Military-grade temperature rating
• Three-state output capability

Applications

• Timing pulse generation
• Delay line circuits
• Frequency division applications

Procurement Notes

Verify the specific manufacturer source, as National Semiconductor assets are now managed by Texas Instruments. Confirm that the ceramic DIP package matches the required environmental and mechanical constraints for the target application. Ensure compatibility with legacy design rules if integrating into existing systems.

Selection Notes

Select this component when a robust, dual-channel timing solution is required for harsh environments. The ceramic packaging offers superior durability compared to plastic variants. Verify that the 5 V supply voltage aligns with the system power architecture before finalizing the design.

Part Context

This part belongs to the CD4500 series of CMOS logic devices. It serves as a specialized timing element within digital systems. The 'B' suffix typically denotes enhanced performance or specific manufacturing lot characteristics, while 'DM' identifies the ceramic DIP package type.

Replacement Considerations

Equivalent parts include the MM54C221 and HEF4528B. Verify pinout compatibility and electrical specifications against these alternatives before substitution.