Datenblatt-Suchmaschine für elektronische Bauteile |
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74ABT899A Datenblatt(PDF) 4 Page - NXP Semiconductors |
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74ABT899A Datenblatt(HTML) 4 Page - NXP Semiconductors |
4 / 16 page Philips Semiconductors Product specification 74ABT899 9-bit dual latch transceiver with 8-bit parity generator/checker (3-State) 1998 Jan 16 4 4 5 1 0 mux 9–bit Output Buffer OE 9–bit Output Buffer 9–bit Transparent Latch LE Parity Generator Parity Generator 1 0 mux OE 9–bit Transparent Latch LE 27 3 6 7 8 9 10 11 12 16 1 17 13 26 24 23 25 22 21 20 19 18 2 15 OEB LEA A0 A1 A2 A3 A4 A5 A6 A7 APAR OEA SEL ODD/ EVEN LEB B7 BPAR B6 B5 B4 B3 B2 B1 B0 ERRA ERRB SA00292 FUNCTION TABLE INPUTS OPERATING MODE OEB OEA SEL LEA LEB H H X X X 3-State A bus and B bus (input A & B simultaneously) H L L L H B → A, transparent B latch, generate parity from B0 - B7, check B bus parity H L L H H B → A, transparent A & B latch, generate parity from B0 - B7, check A & B bus parity H L L X L B → A, B bus latched, generate parity from latched B0 - B7 data, check B bus parity H L H X H B → A, transparent B latch, parity feed-through, check B bus parity H L H H H B → A, transparent A & B latch, parity feed-through, check A & B bus parity L H L H X A → B, transparent A latch, generate parity from A0 - A7, check A bus parity L H L H H A → B, transparent A & B latch, generate parity from A0 - A7, check A & B bus parity L H L L X A → B, A bus latched, generate parity from latched A0 - A7 data, check A bus parity L H H H L A → B, transparent A latch, parity feed-through, check A bus parity L H H H H A → B, transparent A & B latch, parity feed-through, check A & B bus parity L L X X X Output to A bus and B bus (NOT ALLOWED) H = High voltage level L = Low voltage level X = Don’t care |
Ähnliche Teilenummer - 74ABT899A |
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Ähnliche Beschreibung - 74ABT899A |
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