This is to advise you that a Design and/or Process Change will be made to the following High Reliability product(s):
Product ID (Description): FACT RADHARD LOGIC DEVICES (See List of Product affected at end of this note)
Proposed Date of Change: The change in RHA qualification testing effects all FACT 2.0um RHA product tested and shipped on September 3, 1996 and thereafter.
Description of Change: REBOUND TEST ELIMINATION As of August 29, 1996, National Semiconductor's Technical Review Board approved the elimination of the MIL-STD-883, Method 1019.4, Rebound Test. The Rebound test was initially implemented to determine if a CMOS product or a CMOS technology was affected by the radiation induced degradation, referred to as Rebound or Super Recovery Effect. This test was required on all guaranteed Radiation Hardness Assured (RHA) product shipments.
The Rebound test required a 50% increase in total dose over the guaranteed RHA level followed by 100 degrees C, 168-hour post-irradiation anneal. Upon completion of the anneal, a Group A electrical test was performed in order to determine if the Rebound effect had generated a functional failure or failed the limits of output current drive, output voltage or propagation times. If any of these parameters failed, the product lot would be rejected for RHA applications.
Over five years of Rebound Test Data for unburned-in as well as burned-in product and including a more recent six month study showed that the Rebound test did not fail. Under the option granted by MIL-STD-883D, Method 1019.4, paragraph 3.10.1.b, step 5, National Semiconductor eliminated the Rebound test as a requirement. However, National Semiconductor shall perform this test as an Engineering test at random time intervals and on different FACT RHA product lots. In addition, the Rebound Test shall be required anytime a new product is qualified or the design/ process affects the form, fit or funtion of the RHA product.
Effect of Change: The elimination of the Rebound Test does not diminish the quality or reliability of the FACT-RHA product. The present methodology is sufficient to indicate parametric drift or functionality that definately would demonstrate the need to perform the Rebound Test. This decision eliminates a non-value-added requirement from RHA qualification testing.
Associated Notes / Table(s):
List of Product Affected:
National Part Number Military Part Number JM54ACT00BCA-RH 5962R8769901BCA JM54ACT00BDA-RH 5962R8769901BDA JM54ACT00SCA-RH 5962R8769901SCA JM54ACT00SDA-RH 5962R8769901SDA JM54ACT240BRA-R 5962R8775901BRA JM54ACT240BSA-R 5962R8775901BSA JM54ACT240SRA-R 5962R8775901SRA JM54ACT240SSA-R 5962R8775901SSA JM54ACT244BRA-R 5962R8776001BRA JM54ACT244BSA-R 5962R8776001BSA JM54ACT244SRA-R 5962R8776001SRA JM54ACT244SSA-R 5962R8776001SSA JM54ACT245BRA-R 5962R8766301BRA JM54ACT245BSA-R 5962R8766301BSA JM54ACT245SRA-R 5962R8766301SRA JM54ACT245SSA-R 5962R8766301SSA JM54AC00BCA-RH JM38510R75001BCA JM54AC00BDA-RH JM38510R75001BDA JM54AC00SCA-RH JM38510R75001SCA JM54AC00SDA-RH JM38510R75001SDA JM54AC02BCA-RH JM38510R75101BCA JM54AC02BDA-RH JM38510R75101BDA JM54AC02SCA-RH JM38510R75101SCA JM54AC02SDA-RH JM38510R75101SDA JM54AC02S2A-RH JM38510R75101S2A JM54AC04BCA-RH JM38510R75701BCA JM54AC04BDA-RH JM38510R75701BDA JM54AC04SCA-RH JM38510R75701SCA JM54AC04SDA-RH JM38510R75701SDA JM54AC04S2A-RH JM38510R75701S2A JM54AC08BCA-RH JM38510R75203BCA JM54AC08BDA-RH JM38510R75203BDA JM54AC08SCA-RH JM38510R75203SCA JM54AC08SDA-RH JM38510R75203SDA JM54AC10BDA-RH JM38510R75002BDA JM54AC10BCA-RH JM38510R75002BCA JM54AC10SCA-RH JM38510R75002SCA JM54AC10SDA-RH JM38510R75002SDA JM54AC109BEA-RH JM38510R75304BEA JM54AC109BFA-RH JM38510R75304BFA JM54AC109SEA-RH JM38510R75304SEA JM54AC109SFA-RH JM38510R75304SFA JM54AC11BCA-RH JM38510R75204BCA JM54AC11BDA-RH JM38510R75204BDA JM54AC11SCA-RH JM38510R75204SCA JM54AC11SDA-RH JM38510R75204SDA JM54AC138BEA-RH JM38510R75802BEA JM54AC138BFA-RH JM38510R75802BFA JM54AC138SEA-RH JM38510R75802SEA JM54AC138SFA-RH JM38510R75802SFA JM54AC139BEA-RH JM38510R75803BEA JM54AC139BFA-RH JM38510R75803BFA JM54AC139SEA-RH JM38510R75803SEA JM54AC139SFA-RH JM38510R75803SFA JM54AC14BCA-RH JM38510R75702BCA JM54AC14BDA-RH JM38510R75702BDA JM54AC14SCA-RH JM38510R75702SCA JM54AC14SDA-RH JM38510R75702SDA JM54AC14S2A-RH JM38510R75702S2A JM54AC161BEA-RH JM38510R76302BEA JM54AC161BFA-RH JM38510R76302BFA JM54AC161SEA-RH JM38510R76302SEA JM54AC161SFA-RH JM38510R76302SFA JM54AC174BEA-RH JM38510R75307BEA JM54AC174BFA-RH JM38510R75307BFA JM54AC174SEA-RH JM38510R75307SEA JM54AC174SFA-RH JM38510R75307SFA JM54AC191BEA-RH JM38510R76305BEA JM54AC191BFA-RH JM38510R76305BFA JM54AC191SEA-RH JM38510R76305SEA JM54AC191SFA-RH JM38510R76305SFA JM54AC20BCA-RH JM38510R75003BCA JM54AC20BDA-RH JM38510R75003BDA JM54AC20SCA-RH JM38510R75003SCA JM54AC20SDA-RH JM38510R75003SDA JM54AC240BRA-RH JM38510R75703BRA JM54AC240BSA-RH JM38510R75703BSA JM54AC240SRA-RH JM38510R75703SRA JM54AC240SSA-RH JM38510R75703SSA JM54AC241BRA-RH JM38510R75704BRA JM54AC241BSA-RH JM38510R75704BSA JM54AC241SRA-RH JM38510R75704SRA JM54AC241SSA-RH JM38510R75704SSA JM54AC244BRA-RH JM38510R75705BRA JM54AC244BSA-RH JM38510R75705BSA JM54AC244SRA-RH JM38510R75705SRA JM54AC244SSA-RH JM38510R75705SSA JM54AC244S2A-RH JM38510R75705S2A JM54AC245BRA-RH JM38510R75503BRA JM54AC245BSA-RH JM38510R75503BSA JM54AC245SRA-RH JM38510R75503SRA JM54AC245SSA-RH JM38510R75503SSA JM54AC245S2A-RH JM38510R75503S2A JM54AC273BRA-RH JM38510R75601BRA JM54AC273BSA-RH JM38510R75601BSA JM54AC273SRA-RH JM38510R75601SRA JM54AC273SSA-RH JM38510R75601SSA JM54AC32BCA-RH JM38510R75201BCA JM54AC32BDA-RH JM38510R75201BDA JM54AC32SCA-RH JM38510R75201SCA JM54AC32SDA-RH JM38510R75201SDA JM54AC373BRA-RH JM38510R75403BRA JM54AC373BSA-RH JM38510R75403BSA JM54AC373SRA-RH JM38510R75403SRA JM54AC373SSA-RH JM38510R75403SSA JM54AC374BRA-RH JM38510R75602BRA JM54AC374BSA-RH JM38510R75602BSA JM54AC374SRA-RH JM38510R75602SRA JM54AC374SSA-RH JM38510R75602SSA JM54AC521BRA-RH 5962R9098501BRA JM54AC521BSA-RH 5962R9098501BSA JM54AC521SRA-RH 5962R9098501SRA JM54AC521SSA-RH 5962R9098501SSA JM54AC74BCA-RH JM38510R75302BCA JM54AC74BDA-RH JM38510R75302BDA JM54AC74SCA-RH JM38510R75302SCA JM54AC74SDA-RH JM38510R75302SDA JM54AC86BCA-RH JM38510R75202BCA JM54AC86BDA-RH JM38510R75202BDA JM54AC86SCA-RH JM38510R75202SCA JM54AC86SDA-RH JM38510R75202SDA This PCN can also be sent to customers by copying and pasting the attached PDF file into an email:-