Texas Instruments CD74ACT623

the rca cd54/74ac623 and cd54/74act623 octal-bus transceivers use the rca advanced cmos technology. they are non-inverting 3-state bidirectional transceiver-buffers that allow for two-way transmission from "a" bus to "b" bus or "b" bus to "a" bus depending on the logic levels of the output enable (oeab (oe)\ba) inputs. the dual output enable provision gives these devices the capability to store data by simultaneously enabling oeab and (oe)\ba. each output reinforces its input under these conditions and when all other data sources to the bus lines are at high-impedance both sets of bus lines will remian in their last states. the cd74ac623 is supplied in 20-lead dual-in-line plastic packages e suffix) and in 20-lead small-outline packages (m m96 and nsr suffixes). view all in datasheet