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It provided designers with a list of parts they could use that NASA had already certified as acceptable, rather then having to test/certify every single piece. Ultimately this was a great idea at the time. Everything from capacitors, diodes, cables, oscillators and even some processors.
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This was essentially a list of products that met NASA’s standards for all electronic devices. Based on the 38510 standard,and the 883 testing standards NASA created MIL-STD-975 in 1976. The 38510 standard refer’d back to the MIL-STD-883 testing procedures, it in itself did not define any testing.Īs things progressed, MIL-STD-883 with the how, and MIL-M-38510 with the what, NASA decided they should have their own standard (American government agencies like to compete). This ensured that no matter where the Military got that 38510 standard 74181 ALU it would behave the exact same. Zilog JAN MIL-M-38510 52002BQA Z8002 CPU – 1987īased on existing devices, it simply took a commercial device, such as a 74181 ALU, and gave it a 38510 description and part number. They could be made by anyone, anyway they liked, but to be marked/used as a JAN38510 device they had to meet what it defined that device to do. It provided fit, form and function standards for various devices. 38510, often called JAN38510 (Joint Army Navy Standard Naming which was used through Rev J in 1991) was a General Specification for Microcircuits. Obviously a vehicle designed to take people to space should use higher quality parts then one launching unmanned missions.Īs IC’s continued to be developed, and many devices became ‘standard’ like various RTL/TTL devices and the like, the Military wanted to define those better for themselves as well. Several classes were then created for space, S, V, Q and B, varying in the degree of testing needed. A computer chip the captains coffee pot did not need the same testing as a computer chip destined for a nuclear submarine, or one for use in Space. As the years went by, different Classes of testing were added. It provides such things as inspection methods, burn-in methods, lot sampling, and a whole host of other ways to test and inspect IC’s. This was (and continues to be, its on Rev L now) a standard created on Test methods and procedures for ICs, any IC’s. Thus in May of 1968 the MIL-STD-883 was released. Then those destined for your microwave oven or digital alarm clock. To make purchasing and stocking such components easier, the military, as they usually do, decided there needed to be some standards, and ICs for the military, should be available in higher standards The US Military was, of course, an early user of integrated circuits, as they could afford them, and IC’s allowed for some cutting edge technology. Many companies were making many different types (generally simple logic at the time, but that was changing fast). To learn a bit more about how these MIL-STD’s work, lets take a journey back to the 1960’s (everyone knows hat was a fun time)īack in the 1960’s integrated circuits were getting to be more standard, and more available. So what was special about these CPUs? Was this some random House # for an OEM? Nope, these were made for NASA, specifically to conform with MIL-STD-975. Others in the same package were marked SSQ2269. Packaged in a 68-pin CQFP package, they typically would be labeled as a MQ80C186 (Military CMOS 186 running at 12MHz) but these were as ‘SQ’ prefix, and had the weird SSQ22667-001 part # on them as well. Some were conveniently also labeled SQ80C186-12. They were marked SSQ22667-001 and made by Intel. Recently some interesting CPUs showed up on eBay and other IC selling sites.