74ACT16651

D Members of the Texas Instruments Widebus ™ Family D Inputs Are TTL-Voltage Compatible D Inverting Data Paths D Independent Registers and Enables for A and B Buses D Multiplexed Real-Time and Stored Data D Flow-Through Architecture Optimizes PCB Layout D Distributed VCC and GND Pin Configurations Minimize High-Speed Switching Noise D EPIC™ (Enhanced-Performance Implanted CMOS) 1-µm Process D 500-mA Typical Latch-Up Immunity at 125°C D Packaged in Plastic 300-mil Shrink Small-Outline (DL) Packages and 380-mil Fine-Pitch Ceramic Flat (WD) Packages Using 25-mil Center-to-Center Pin Spacings description The SN54ACT16651 and 74ACT16651 are 16-bit bus transceivers that consist of D-type flip-flops and control circuitry arranged for multiplexed transmission of data directly from the data bus or from the internal storage registers. These devices can be used as two 8-bit transceivers or one 16-bit transceiver. Complementary 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. A low input level selects real-time data, and a high input level selects stored data. 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. Figure 1 illustrates the four fundamental bus-management functions that can be performed with the SN54ACT16651 and 74ACT16651...