4093BDM

Overview

The National Semiconductor 4093BDM is a quad 2-input NAND Schmitt trigger integrated circuit belonging to the 4000B series. It features four independent logic gates with Schmitt-trigger inputs designed for waveform transformation and noise immunity. The device operates within a supply voltage range of 3V to 18V and utilizes a 14-SOIC surface-mount package. It supports industrial temperature ranges and includes defined static current characteristics suitable for general-purpose digital logic applications.

Feature Summary

• Quad configuration providing four independent 2-input NAND logic gates
• Schmitt-trigger input stages for effective noise filtering and signal conditioning
• Wide operating supply voltage capability supporting diverse power environments
• Surface-mount packaging optimized for automated assembly processes

Applications

• Waveform shaping and conversion from analog signals to digital pulses
• Signal conditioning in noisy industrial communication interfaces
• Basic logic implementation in embedded control systems
• Timing circuits requiring hysteresis for stable switching thresholds

Procurement Notes

Verify the manufacturer origin as National Semiconductor or its successor entities, as production rights may have transferred. Confirm the specific suffix indicates the SOIC-14 package variant. Ensure compliance requirements match project specifications, noting that older batches may lack modern environmental certifications. Validate pinout compatibility if replacing legacy components in existing designs.

Selection Notes

Select this component when high noise immunity is required for digital inputs without external filtering. The wide voltage range allows operation in both low-power and standard logic environments. Consider the package size constraints during PCB layout. Verify thermal performance if operating near maximum temperature limits. Compare propagation delays against system timing requirements to ensure adequate speed margins.

Part Context

This part belongs to the widely adopted 4000B CMOS logic family, known for robust performance across varying supply voltages. The 4093B specifically addresses the need for clean digital transitions in analog-heavy environments. Its quad gate architecture reduces board space compared to single-gate alternatives. The device represents a standard solution for basic logical operations in mixed-signal systems.

Replacement Considerations

Compatible substitutes include HEF4093B from NXP Semiconductors and CD4093BM from Texas Instruments. These parts share identical logical functions and pin configurations. Verify package dimensions and electrical parameters before substitution to ensure mechanical and functional interchangeability.