SMJ4416-15JDS

Overview

The SMJ4416-15JDS is a 16Kx4 Page Mode DRAM manufactured by Texas Instruments. It features a maximum access time of 150 ns and utilizes NMOS technology. The device is housed in an 18-pin Ceramic Dual In-line Package (CDIP18) with side-brazed hermetic sealing, suitable for high-reliability environments. It supports RAS-only, CAS-before-RAS, and hidden refresh modes.

Feature Summary

• Hermetically sealed ceramic package for radiation tolerance
• Page mode operation for sequential data access
• Supports multiple refresh schemes including RAS-only and hidden refresh

Applications

• Military aerospace systems requiring radiation-hardened memory
• Spacecraft onboard data storage
• High-reliability industrial control systems

Procurement Notes

Verify the specific suffix JDS confirms the CDIP18 hermetic package and NMOS process. Confirm radiation hardness levels if required for mission-critical applications. Check for obsolescence status as this component may be discontinued or available through authorized distributors like Rochester Electronics. Ensure compatibility with existing system voltage and timing requirements.

Selection Notes

Select this part when radiation tolerance and long-term reliability are prioritized over density or speed. Compare against other SMJ series DRAMs for capacity and access time differences. Verify that the 150 ns access time meets system clock constraints. Consider pinout compatibility with legacy designs using standard DIP18 footprints.

Part Context

This component belongs to the SMJ series of radiation-hardened static and dynamic random-access memories produced by Texas Instruments. These parts are designed for harsh environments where standard commercial components would fail due to ionizing radiation effects. The SMJ series typically undergoes rigorous screening and testing to ensure performance in space and military applications.

Replacement Considerations

Check for direct equivalents in the SMJ4416 family with different access times or package options. Consult Texas Instruments or authorized distributors for current availability and cross-reference lists. No direct public substitute part numbers are confirmed in the provided source material.