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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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  • Answered

    TXU0304: TXU0304 0 Locked

    396 views
    4 replies
    Latest over 1 year ago
    by Manmohan garg
  • Answered

    TXB0108: how can we use both 8-ch simulation in IBIS model? +1 Locked

    616 views
    7 replies
    Latest over 1 year ago
    by Jack Guan
  • Suggested Answer

    SN74LVC16T245: questions about datasheet section 10.1.1 0 Locked

    317 views
    1 reply
    Latest over 1 year ago
    by Michael Ikwuyum
  • Answered

    LSF0102: Use LSF0102 for IO level shifting between 1.2V and 1.8V. 0 Locked

    792 views
    7 replies
    Latest over 1 year ago
    by Jack Guan
  • Answered

    TXV0106: More datasheet issues. 0 Locked

    337 views
    3 replies
    Latest over 1 year ago
    by Michael Ikwuyum
  • Suggested Answer

    LSF0108: Push Pull Driver into A1 with Voltage higher than VREF_A 0 Locked

    258 views
    3 replies
    Latest over 1 year ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LVC1G17: Slow input rise and fall time spec 0 Locked

    426 views
    1 reply
    Latest over 1 year ago
    by Clemens Ladisch
  • Answered

    SN74HC540: Query regarding direct substitute part 0 Locked

    304 views
    2 replies
    Latest over 1 year ago
    by Nitesh Bhurke
  • Suggested Answer

    SN74LVC1G74: Project schematic review 0 Locked

    253 views
    3 replies
    Latest over 1 year ago
    by Malcolm Lyn
  • Not Answered

    SN74AHCT541: while OE1 is high, OE2 is low, why output signal changes its state 0 Locked

    862 views
    16 replies
    Latest over 1 year ago
    by Malcolm Lyn
  • Suggested Answer

    SN74LVTH125: SN74LVTH125 for 1 pulse per second 3.3V LVTTL 50 ohm load drive compatibility 0 Locked

    598 views
    4 replies
    Latest over 1 year ago
    by Malcolm Lyn
  • Suggested Answer

    CD74HC393: RFQ SUPPORT 0 Locked

    242 views
    3 replies
    Latest over 1 year ago
    by Clemens Ladisch
  • Suggested Answer

    TXS0108E-Q1: Level Shifting not sitting at 0 when no input 0 Locked

    333 views
    2 replies
    Latest over 1 year ago
    by Jack Guan
  • Answered

    SN74LVCH8T245: Pulse Rise/Fall Time 0 Locked

    219 views
    1 reply
    Latest over 1 year ago
    by Michael Ikwuyum
  • Answered

    TXS0108E:level shifter 5v to 3.3V 0 Locked

    742 views
    3 replies
    Latest over 1 year ago
    by francesc riera vidal
  • Answered

    LSF0101: Capacitor on Vref_A? 0 Locked

    228 views
    2 replies
    Latest over 1 year ago
    by Zach Kimble
  • Suggested Answer

    TXB0108: VCCB ON/OFF 0 Locked

    297 views
    4 replies
    Latest over 1 year ago
    by Jack Guan
  • Suggested Answer

    SN74HCS125: SN74HCS125 0 Locked

    239 views
    1 reply
    Latest over 1 year ago
    by Clemens Ladisch
  • Answered

    SN54SC4T125-SEP: Level translation 0 Locked

    242 views
    2 replies
    Latest over 1 year ago
    by Javier Guevara
  • Suggested Answer

    TXV0106: skew for Vcca=1.2V and switching char. for Vcca=3.3V 0 Locked

    301 views
    5 replies
    Latest over 1 year ago
    by Michael Ikwuyum
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