OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS

hese devices consist of Bus Transceiver SN54ABT652 SN74ABT652 circuits, D-type Flip-Flops and control circuitry arranged for multiplexed transmission of data directly from the data bus or from the internal storage Registers Output-enable (OEAB and OEBA) inputs are provided to control the transceiver functions. Select-control (SAB and SBA) inputs are provided to select whether real-time or stored data is transferred. The circuitry used for select control eliminates the typical decoding glitch that occurs in a multiplexer during the transition between stored and real-time data. A low input selects real-time data, and a high input selects stored data. Figure 1 illustrates the four fundamental bus-management functions that CAN be performed with the ABT652. By Texas Instruments