The SN74ALS2238 consists of bus-transceiver circuits, two 32 x 9 FIFOs, and control circuitry arranged for multiplexed transmission of data directly from the data bus or from the internal FIFO memories. Enables GAB and GBA are provided to control the transceiver functions. The SAB and SBA control pins 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 level selects real-time data and a high selects stored data. Eight fundamental bus-management functions can be performed as shown in Figure 1.