74AC11652 OCTAL BUS TRANSCEIVER AND REGISTERS WITH 3-STATE OUTPUTS

SCAS088A - DECEMBER 1989 - REVISED APRIL 1996

features

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 ^TM (Enhanced-Performance Implanted CMOS) 1-um Process
500-mA Typical Latch-Up Immunity at 125°C

EPIC is a trademark of Texas Instruments

description

The 74AC11652 consists of bus transceiver circuits, D-typeflip-flops, and control circuitry arranged for multiplexedtransmission of data directly from the data bus or from the internalstorage registers. Output-enable (OEAB and ) inputs are provided to controlthe transceiver functions. The select-control (SAB and SBA) inputsare provided to select whether real-time or stored data istransferred. A low input level selects real-time data, and a highinput level selects stored data. Figure 1 illustrates the fourfundamental bus-management functions that can be performed with the74AC11652.

Data on the A or B bus, or both, can be stored in the internal Dflip-flops by low-to-high transitions at the appropriate clock (CLKABor CLKBA) inputs, regardless of the select- or enable-control pins.When SAB and SBA are in the real-time transfer mode, it is alsopossible to store data without using the internal D-type flip-flopsby simultaneously enabling OEAB and OEBA\. In this configuration,each output reinforces its input. Thus, when all other data sourcesto the two sets of bus lines are at high impedance, each set remainsat its last state.

The 74AC11652 is characterized for operation from -40°C to85°C.

Title: OCTAL BUS TRANSCEIVER AND REGISTER WITH 3-STATE OUTPUTS
Product Family: REGISTERED TRANSCEIVERS
Device Functionality: OCTAL BUS TRANSCEIVER/REGISTER
Orderable Devices: 74AC11652DW, 74AC11652DWR

View the complete PDF datasheet: scas088a.pdf (135 K Bytes) (Requires Acrobat Reader 3.x)

View more information about generic part numbers:74AC11652

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