Datenblatt-Suchmaschine für elektronische Bauteile |
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74ABT543CMSA Datenblatt(PDF) 2 Page - Fairchild Semiconductor |
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74ABT543CMSA Datenblatt(HTML) 2 Page - Fairchild Semiconductor |
2 / 8 page www.fairchildsemi.com 2 Functional Description The ABT543 contains two sets of D-type latches, with sep- arate input and output controls for each. For data flow from A to B, for example, the A to B Enable (CEAB) input must be low in order to enter data from the A Port or take data from the B Port as indicated in the Data I/O Control Table. With CEAB low, a low signal on (LEAB) input makes the A to B latches transparent; a subsequent low to high transi- tion of the LEAB line puts the A latches in the storage mode and their outputs no longer change with the A inputs. With CEAB and OEAB both low, the B output buffers are active and reflect the data present on the output of the A latches. Control of data flow from B to A is similar, but using the CEBA, LEBA and OEBA. Data I/O Control Table H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Logic Diagram Inputs Latch Status Output Buffers CEAB LEAB OEAB H X X Latched HIGH Z X H X Latched — L L X Transparent — X X H — HIGH Z L X L — Driving |
Ähnliche Teilenummer - 74ABT543CMSA |
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Ähnliche Beschreibung - 74ABT543CMSA |
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