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Logic

Logic

Logic forum

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Texas Instruments (TI) Logic support forum is an extensive online knowledge base where millions of technical questions and solutions are available 24/7. You can search logic IC content or ask technical support questions on everything from voltage level translation and transceivers to standard logic gates and specialty logic devices. Find the right solution for your circuit design challenges by using our TI E2E™ support forums that are supported by thousands of contributing TI experts.
Frequent questions
  • [FAQ] Why is there a voltage offset at the input of the SN74AXCxTxxx device?

    Dylan Hubbard
    Dylan Hubbard
    FAQ: Logic and Voltage Translation > Voltage Translators >> Current FAQ The AXC family of Voltage Translators have built in dynamic pull-downs at the I/O. These pull-downs assist with with the glitch free power sequencing feature included in this…
    • over 3 years ago
    • Logic
    • Logic forum
  • [FAQ] Do I still need pull-up/pull-down resistors with bus-hold circuitry?

    Albert Xu1
    Albert Xu1
    FAQ: Logic and Voltage Translation > Input Parameters >> Current FAQ Short answer: External pull-up/down resistors are not recommended for devices with bus-hold circuitry. Explanation: A pull-up or pull-down resistor will create a voltage-divider…
    • over 3 years ago
    • Logic
    • Logic forum
  • [FAQ] Why are the TXS01xx VIH/VIL specifications so stringent?

    Dylan Hubbard
    Dylan Hubbard
    FAQ: Logic and Voltage Translation > Voltage Translators >> Current FAQ TXS family translators utilize a FET-based architecture with an N-channel pass-gate transistor used to open and close the connection between the A-port and B-port. The FET connects…
    • over 3 years ago
    • Logic
    • Logic forum
  • [FAQ] [H] Frequently Asked Questions: Logic and Voltage Translation

    Michael J Schultis
    Michael J Schultis
    Select this link to see answers to common questions, detailed use case implementations, and part recommendations for logic and voltage translation devices. . Top Logic and Voltage Translation FAQs - All-Time How does a slow or floating input affect…
    • Answered
    • over 4 years ago
    • Logic
    • Logic forum
  • [FAQ] What is the typical delay of a logic device in a particular logic family?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Timing Parameters >> Current FAQ Delays vary from device to device, however a general idea of delay can be shown graphically: Two things to note from the above graphic (1) Delay always increases as the supply…
    • over 4 years ago
    • Logic
    • Logic forum
  • [FAQ] Where can I get a CAD symbol, soldering footprint, or 3D model for my device?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Quality and Manufacturing >> Current FAQ TI utilizes the Ultra Librarian software to provide symbols, footprints, and 3D models for our devices. In the product folder for your selected device, scroll down and select…
    • over 4 years ago
    • Logic
    • Logic forum
  • [FAQ] How do I set up a TI.com device re-stock notification?

    Sebastian Muriel
    Sebastian Muriel
    FAQ: Logic and Voltage Translation > Quality and Manufacturing >> Current FAQ 1. Search for the desired device in the TI store . 2. Click on the device and select the Ordering & Quality link. 3. Select the Notify me when available link. 4…
    • over 4 years ago
    • Logic
    • Logic forum
  • [FAQ] What are the performance specifications of the HCS logic family at 3.3V operation?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Input Parameters >> Current FAQ This question comes up fairly often because the HCS logic family is specified only at 2V, 4.5V, and 6V. The following min / max values are interpolated from the datasheet tables…
    • over 4 years ago
    • Logic
    • Logic forum
  • [FAQ] How do I select a bypass capacitor for a CMOS logic device?

    Emrys Maier
    Emrys Maier
    Other Parts Discussed in Thread: SN74LVC1G08 , SN74LVC16244A FAQ: Logic and Voltage Translation > Power and Thermals >> Current FAQ For the short answer - use a 0.1uF for single supply logic devices like the SN74LVC1G08, or a 0.022uF capacitor for each…
    • over 4 years ago
    • Logic
    • Logic forum
  • [FAQ] What's the difference between logic output types (push-pull, open-drain, 3-state)?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Output Parameters >> Current FAQ Push-Pull Output A push-pull output can source current in the high state or sink current in the low state. In modern CMOS devices, the most common configuration for a push-pull…
    • over 4 years ago
    • Logic
    • Logic forum
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  • Suggested Answer

    LSF0204: VIL of I/O pin 0 Locked

    421 views
    3 replies
    Latest over 7 years ago
    by Emrys Maier
  • Suggested Answer

    SN74LVC1G123: Output Pulse duration 0 Locked

    1956 views
    1 reply
    Latest over 7 years ago
    by Emrys Maier
  • Suggested Answer

    SN74LS31: What is the minimum pulse width and the maximum frequency which can be input to SN74LS31? 0 Locked

    422 views
    3 replies
    Latest over 7 years ago
    by Emrys Maier
  • Answered

    SN74AHC1G09: IBIS model required. 0 Locked

    483 views
    1 reply
    Latest over 7 years ago
    by Emrys Maier
  • Not Answered

    [FAQ] Where do I connect the thermal pad of the logic QFN devices? 0 Locked

    4231 views
    0 replies
    Started over 7 years ago
    by ShreyasRao
  • Suggested Answer

    SN74LV4T125: Thermal pad connection 0 Locked

    1158 views
    1 reply
    Latest over 7 years ago
    by ShreyasRao
  • Suggested Answer

    TINA/Spice/SN74AUP1G80: Need the SPICE Model 0 Locked

    813 views
    2 replies
    Latest over 7 years ago
    by Kumar Munusamy70
  • Suggested Answer

    SN74AVC4T774: Max supported data rate for 3.3V to 1.2V/1.5V/1.8V/2.5V/3.3V level translation 0 Locked

    412 views
    2 replies
    Latest over 7 years ago
    by ShreyasRao
  • Suggested Answer

    SN74HC139: IBIS MODEL 0 Locked

    436 views
    1 reply
    Latest over 7 years ago
    by Emrys Maier
  • Suggested Answer

    SN74HCT244: SN74HCT244 output current problem 0 Locked

    402 views
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    Latest over 7 years ago
    by Dylan Hubbard
  • Answered

    TXS0108E: May I have some question for the part different ? 0 Locked

    5368 views
    12 replies
    Latest over 7 years ago
    by TAlex Wu
  • Answered

    SN74LS244: What does the 'E4' at the end of the part number mean? 0 Locked

    690 views
    2 replies
    Latest over 7 years ago
    by John Russo
  • Suggested Answer

    SN74AHC1G14: Issues on recognizing logical low 0 Locked

    1018 views
    8 replies
    Latest over 7 years ago
    by Emrys Maier
  • Suggested Answer

    SN74GTL2003: SN74GTL2003 between LVCMOS18(1.8V) and LVTTL 3.3V 0 Locked

    552 views
    1 reply
    Latest over 7 years ago
    by ShreyasRao
  • Suggested Answer

    TXB0104: do we have trace length limitation for input signal and output signal? 0 Locked

    333 views
    1 reply
    Latest over 7 years ago
    by Karan Kotadia
  • Answered

    SN74LVC244A: Buffer recommendation 0 Locked

    710 views
    4 replies
    Latest over 7 years ago
    by Yang Wu
  • Suggested Answer

    SN74GTL2003: SN74GTL2003 between LVCMOS18(1.8V LVCMOS18) and 3.3V LVTTL(output) 0 Locked

    565 views
    1 reply
    Latest over 7 years ago
    by Dylan Hubbard
  • Suggested Answer

    SN74LVC1G07: Whether the input (A) should be less than or equal to supply voltage (Vcc) or the input (A) can be greater than the supply voltage (Vcc) 0 Locked

    401 views
    1 reply
    Latest over 7 years ago
    by Dylan Hubbard
  • Suggested Answer

    SN74HC125: Logic state related query 0 Locked

    645 views
    3 replies
    Latest over 7 years ago
    by Emrys Maier
  • Suggested Answer

    SN74AUP1G125: Need to know maximum capacitive load driving capability 0 Locked

    490 views
    1 reply
    Latest over 7 years ago
    by Emrys Maier
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