NSC831E-MIL

I/o Expanders Overview

The NSC831E-MIL is a CMOS I/O controller designed for the National Semiconductor NSC800 microcomputer family. It provides eight general-purpose bidirectional I/O lines and two interrupt request inputs, enabling direct interfacing with system peripherals without additional logic. The device operates within a military temperature range of -55°C to 125°C and utilizes a ceramic dual in-line package (DIP) with 40 terminals. It functions as a dedicated peripheral compatible with the NSC800 bus structure.

I/o Expanders Feature Summary

• Provides eight general-purpose bidirectional I/O lines for direct peripheral interfacing
• Includes two interrupt request inputs for vectored priority handling
• Designed for direct integration with the NSC800 microcomputer family bus structure

I/o Expanders Applications

• Military-grade embedded control systems requiring extended temperature operation
• NSC800-based microcomputer architectures needing dedicated I/O expansion
• Avionics or defense equipment utilizing vectored interrupt handling

I/o Expanders Procurement Notes

Verify that the component matches the specific MIL-STD-883 screening requirements for your application. Confirm the package type and terminal configuration align with your board layout. Ensure compatibility with the NSC800 family bus timing specifications before integration into the design.

I/o Expanders Selection Notes

Select this component when designing systems based on the NSC800 architecture that require dedicated hardware I/O management. It is suitable for applications demanding high reliability and operation across extreme environmental conditions. Consider its specific interrupt capabilities if complex peripheral coordination is necessary.

I/o Expanders Part Context

This part belongs to the NSC800 microcomputer family, which includes dedicated CMOS peripherals such as the NSC810A RAM/I/O/Timer and the NSC858 UART. These components allow system designers to build low-power solutions directly compatible with the NSC800 CPU, reducing the need for external interface logic.