![]() ![]() ![]() 239000002131 composite materials Substances 0.000 description 1. ![]() 230000005540 biological transmission Effects 0.000 description 1.Assignors: KUNG, DAVID Application filed by National Semiconductor Corp filed Critical National Semiconductor Corp Priority to US06/412,638 priority Critical patent/US4490631A/en Application granted granted Critical Publication of US4490631A publication Critical patent/US4490631A/en Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links OF DE reassignment NATIONAL SEMICONDUCTOR CORPORATION, A CORP. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Assigned to NATIONAL SEMICONDUCTOR CORPORATION, A CORP. Original Assignee National Semiconductor Corp Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US06/412,638 Inventor David Kung Current Assignee (The listed assignees may be inaccurate. Google Patents Totem pole/open collector selectable output circuitÄownload PDF Info Publication number US4490631A US4490631A US06/412,638 US41263882A US4490631A US 4490631 A US4490631 A US 4490631A US 41263882 A US41263882 A US 41263882A US 4490631 A US4490631 A US 4490631A Authority US United States Prior art keywords transistor base terminal coupled circuit Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. ![]() Google Patents US4490631A - Totem pole/open collector selectable output circuit US4490631A - Totem pole/open collector selectable output circuit ![]()
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