11 december, 2001 dear customer: aeroflex utmc microelectronic systems inc. (utmc) appreciates your interest and use of our products, specifically the ut1553b remote terminal multi-protocol (rtmp). the purpose of this letter is to inform you that utmc intends to migrate the rtmp (standard military drawing (smd) #5962-88645) to a new wafer fabrication facility. the supply of current wafer material will soon be at a level that necessitates this migration. the new version of the rtmp remote terminal interface is designed to be a direct package replacement for the existing rtmp. this new version will also be a fit-form- function replacement and demonstrate the same electrical characteristics as the current version. aeroflex utmc has sufficient die inventory to yield approximately 2,200 finished good units (die code un05). the inventory of the existing rtmp is being offered to customers until the replacement product is fully qualified. aeroflex utmc plans to cease shipping product built from the old mask set, once qualification of the migrated version is complete. we expect to use the same smd number (5962-88645) for the new material. an updated version of the rtmp data sheet will be made available on the utmc website (www.utmc.com) by the end of the second quarter 2002. for reference, attached is a current listing of rtmp part types and smd numbers. if you have any questions please contact me at (719) 594-8252. regards, anthony f. jordan director of standard product line business development and engineering attachment
current ut1553 rtmp part numbers and standard military drawing (smd) numbers. part/smd number pins pkg flow lead finish ut1553/rtmp-aca 84 lcc mil-temp solder ut1553/rtmp-gcc 84 pga mil-temp gold ut1553/rtmp-gca 84 pga mil-temp solder ut1553/rtmp-wcc 84 flatpack mil-temp gold ut1553/rtmp-wca 84 flatpack mil-temp solder ut1553/rtmp-apa 84 lcc prototype solder ut1553/rtmp-gpc 84 pga prototype gold ut1553/rtmp-wpc 84 flatpack prototype gold 5962-8864501za 84 lcc qml q solder 5962-8864501xc 84 pga qml q gold 5962-8864501xa 84 pga qml q solder 5962-8864501yc 84 flatpack qml q gold 5962-8864501ya 84 flatpack qml q solder
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