74F544

www.DataSheet4U.com INTEGRATED CIRCUITS 74F543 Octal registered transceiver, non-inverting (3-State) 74F544 Octal registered transceiver, inverting (3-State) Product specification IC15 Data Handbook 1994 Dec 5 Philips Semiconductors Philips Semiconductors Product specification Octal registered transceivers 74F543 74F544 FEATURES 74F543, 74F544 Octal registered transceiver, non-inverting (3-State) Octal registered transceiver, inverting 93-State) FUNCTIONAL DESCRIPTION The 74F543 and 74F544 contain two sets of eight D-type latches, with separate input and controls for each set. For data flow from A to B, for example, the A-to-B Enable (EAB) input must be Low in order to enter data from A0 - A7 or take data from B0 - B7, as indicated in the Function Table. With EAB Low, a Low signal on the A-to-B Latch Enable (LEAB) input makes the A-to-B latches transparent; a subsequent Low-to-High transition for the LEAB signal puts the A latches in the storage mode and their outputs no longer change with the A inputs. With EAB and OEAB both Low, the 3-State B output buffers are active and display the data present at the outputs of the A latches. Control of data flow from B to A is similar, but using the EBA, LEBA, and OEBA inputs. TYPICAL PROPAGATION DELAY 6.0ns 6.5ns TYPICAL SUPPLY CURRENT (TOTAL) 80mA 95mA Combines74F245 and 74F373 type functions in one chip 8-bit octal transceiver with D-type latch 74F543 Non-inverting Back-to-back registers for storage Separate contro...