Datenblatt-Suchmaschine für elektronische Bauteile |
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74AC11651DW Datenblatt(PDF) 1 Page - Texas Instruments |
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74AC11651DW Datenblatt(HTML) 1 Page - Texas Instruments |
1 / 10 page 74AC11651 OCTAL BUS TRANSCEIVER AND REGISTER WITH 3STATE OUTPUTS SCAS135 − MARCH 1990 − REVISED APRIL 1993 Copyright 1993, Texas Instruments Incorporated 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 • Independent Registers and Enables for A and B Buses • Multiplexed Real-Time and Stored Data • Inverting Data Paths • Flow-Through Architecture Optimizes PCB Layout • Center-Pin V CC and GND Configurations Minimize High-Speed Switching Noise • EPIC (Enhanced-Performance Implanted CMOS) 1- µm Process • 500-mA Typical Latch-Up Immunity at 125 °C • Package Options Include Plastic Small-Outline Packages and Standard Plastic 300-mil DIPs description These devices consist of bus transceiver 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. The 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. Figure 1 illustrates the four fundamental bus-management functions that can be performed with the 74AC11651. Data on the A or B bus, or both, can be stored in the internal D flip-flops by low-to-high transitions at the appropriate clock (CLKAB or CLKBA) inputs regardless of the select- or enable-control pins. When SAB and SBA are in the real-time transfer mode, it is also possible to store data without using the internal D-type flip-flops by simultaneously enabling OEAB and OEBA. In this configuration, each output reinforces its input. Thus, when all the other data sources to the two sets of bus lines are at high impedance, each set will remain at its last state. The 74AC11651 is characterized for operation from − 40 °C to 85°C. DW OR NT PACKAGE (TOP VIEW) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 OEAB A1 A2 A3 A4 GND GND GND GND A5 A6 A7 A8 OEBA CLKAB SAB B1 B2 B3 B4 VCC VCC B5 B6 B7 B8 CLKBA SBA EPIC is a trademark of Texas Instruments Incorporated. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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