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SN54LVC646A-SP Status: ACTIVE

Rad-Tolerant Class V, Octal Bus Transceiver and Register With 3-State Outputs


      
         
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 SN54LVC646A-SP
Voltage Nodes(V)3.3,2.7,2.5,1.8  
Vcc range(V)2.0 to 3.6  
Input Level0.0 to 5.5  
Output LevelLVTTL  
Output Drive(mA)24  
No. of Outputs8  
No. of Bits8  
Static Current0.01  
tpd max(ns)7.4  
Technology FamilyLVC  
RatingSpace  
 Samples
 Inventory

Other qualified versions of SN54LVC646A-SP

Version Part Number Definition
Catalog SN54LVC646A TI's standard catalog product

Customers Who Evaluated This Product Also Evaluated

  • SN54LVTH162244-SP: 3.3.-V ABT 16-Bit Buffers/Drivers With 3-State Outputs

    • Product Information

    Features

    • Operates From 1.65 V to 3.6 V
    • Inputs Accept Voltages to 5.5 V
    • Max tpd of 7.4 ns at 3.3 V
    • Typical VOLP (Output Ground Bounce)
      <0.8 at VCC = 3.3 V, TA = 25°C
    • Typical VOHV (Output VOH Undershoot)
      >2 V at VCC = 3.3 V, TA = 25°C
    • Supports Mixed-Mode Signal Operation on All Ports
      (5-V Input/Output Voltage With 3.3-V VCC)
    • Ioff Supports Partial Power-Down-Mode Operation
    • Latch-Up Performance Exceeds 250 mA Per JESD 17
    • ESD Protection Exceeds JESD 22
      • 2000-V Human-Body Model (A114-A)
      • 200-V Machine Model (A115-A)
      • 1000-V Charged-Device Model (C101)
    • Rad Tolerant: 50kRad (Si) TID(1)
      • TID Dose Rate 0.10 rad/s
    • QML-V Qualified, SMD 5962-97626

    (1)Radiation tolerance is a typical value based upon initial device qualification. Radiation Lot Acceptance Testing is available – contact factory for details.

    DESCRIPTION/ORDERING INFORMATION

    The SN54LVC646A octal bus transceiver and register is designed for 2.7-V to 3.6-V VCC operation.

    This device consists of bus-transceiver circuits, D-type flip-flops, and control circuitry arranged for multiplexed transmission of data directly from the input bus or from the internal registers. Data on the A or B bus is clocked into the registers on the low-to-high transition of the appropriate clock (CLKAB or CLKBA) input. Figure 1 shows the four fundamental bus-management functions that are performed with the SN54LVC646A device.

    Output-enable (OE) and direction-control (DIR) inputs control the transceiver functions. In the transceiver mode, data present at the high-impedance port is stored in either register or in both.

    The select-control (SAB and SBA) inputs can multiplex stored and real-time (transparent mode) data. DIR determines which bus receives data when OE is low. In the isolation mode (OE high), A data is stored in one register and B data can be stored in the other register.

    When an output function is disabled, the input function still is enabled and can be used to store and transmit data. Only one of the two buses, A or B, can be driven at a time.

    Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of this device as a translator in a mixed 3.3-V/5-V system environment.

    This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.

    To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

    		    

    Pricing / Packaging / CAD Design Tools / Samples

    PricePackagingSamples
    DeviceStatusTemp (oC)Price | QuantityPackage | PinsPackage QTY | Package CarrierSamples
    5962-9762601VKAACTIVE-55 to 125185.90 | 1kuCFP (W) | 24 1 | TUBEContact TI Distributor or Sales Office

    * Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.

    Inventory

    Reported Distributor Inventory as of 11:21 AM GMT, 22 Nov 2009
    RegionCompanyIn StockPurchase
    TI Lead Time*: 20 Weeks5962-9762601VKA
    None Reported
    View Distributors
    View all Distributors  

    ** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.

    Quality & Lead (Pb)-Free Data

     Product ContentDPPM / MTBF / FIT Rate
    DeviceEco Plan* Lead / Ball FinishMSL Rating / Peak ReflowDetailsDetails
    5962-9762601VKA  TBD A42  N/A for Pkg TypeViewView

    * The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details.

    If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.

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    Customers Who Evaluated This Product Also Evaluated...
    Part # Name Product Family Comments
    SN54LVTH162244-SP 3.3.-V ABT 16-Bit Buffers/Drivers With 3-State Outputs BUFFERS, DRIVERS AND TRANSCEIVERS-NON-INVERTING BUFFERS AND DRIVERS TI customers also evaluated this product.

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