933DM

Overview

The 933DM is a dual four-input expander manufactured by National Semiconductor. This component functions as an I/O expander, designed to expand the input capabilities of digital systems. It provides a solution for managing multiple input signals within integrated circuit applications.

Feature Summary

• Dual channel configuration for expanded input handling
• Four-input capacity per channel for signal management

Applications

• Digital system input expansion
• I/O port interfacing
• Embedded control circuits

Procurement Notes

Verify the manufacturer designation and part number accuracy against official National Semiconductor documentation. Confirm that the component meets specific project requirements for dual four-input expansion functionality. Ensure compatibility with existing system architectures before procurement.

Selection Notes

Select this component when dual channel input expansion is required. Evaluate the need for four-input capacity per channel in the design. Consider integration with National Semiconductor ecosystem components for optimal performance in I/O expansion tasks.

Part Context

National Semiconductor, now part of Texas Instruments, produces this I/O expander. The 933DM belongs to the family of interface components designed for expanding digital inputs. It supports applications requiring additional input channels beyond standard processor limits.

Replacement Considerations

Consult official datasheets for direct substitutes. Verify pinout and functional compatibility with alternative dual four-input expanders from National Semiconductor or Texas Instruments.