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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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View FAQ threads
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  • Answered

    SN74LVC08A: Without output protection diode 0 Locked

    422 views
    1 reply
    Latest over 4 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74AVC4T245: Difference 74AVC4T245RSVR-NT 0 Locked

    374 views
    1 reply
    Latest over 4 years ago
    by Clemens Ladisch
  • Answered

    Thevenin equivalent of open ended transmission line 0 Locked

    1886 views
    7 replies
    Latest over 4 years ago
    by Jonathan Nerger
  • Answered

    SN74AUP1T34: Looking for alternatives because of allocation 0 Locked

    702 views
    2 replies
    Latest over 4 years ago
    by Steffen Fuchs
  • Suggested Answer

    SN74LVC1G125: About FMEA information of SN74LVC series 0 Locked

    360 views
    1 reply
    Latest over 4 years ago
    by Dylan Hubbard
  • Suggested Answer

    SN74AUP1G97: Difference 0 Locked

    419 views
    1 reply
    Latest over 4 years ago
    by Clemens Ladisch
  • Answered

    SN74LV244A: Please tell me about the case where the undershoot is below -0.5V. 0 Locked

    399 views
    3 replies
    Latest over 4 years ago
    by Rami Mooti1
  • Suggested Answer

    SN74HCS72: SN74HCS72 Input Voltage 0 Locked

    351 views
    2 replies
    Latest over 4 years ago
    by Karan Kotadia
  • Not Answered

    SN74HCS138: Using a MSP432 controller to give Vcc to the device 0 Locked

    281 views
    1 reply
    Latest over 4 years ago
    by Rami Mooti1
  • Answered

    SN74LVC06A-Q1: Output leakage current 0 Locked

    1523 views
    5 replies
    Latest over 4 years ago
    by Yuya
  • Answered

    SN74HCS237: doubts on datasheet SN74HCS237 0 Locked

    404 views
    3 replies
    Latest over 4 years ago
    by Emrys Maier
  • Suggested Answer

    TXU0304-Q1: Check with spec (replace SN74LVC2T45-Q1) 0 Locked

    583 views
    9 replies
    Latest over 4 years ago
    by Dylan Hubbard
  • Answered

    SN74AC14: Please tell me about the case where the undershoot is below -0.5V. 0 Locked

    348 views
    3 replies
    Latest over 4 years ago
    by Emrys Maier
  • Suggested Answer

    TXS0104E: Question on TXS0104/TXS0108E schematic 0 Locked

    599 views
    1 reply
    Latest over 4 years ago
    by Clemens Ladisch
  • Answered

    14-24-LOGIC-EVM: Board thickness 0 Locked

    439 views
    1 reply
    Latest over 4 years ago
    by Rami Mooti1
  • Suggested Answer

    TXS0108E: does TXS0108E have weak voltage output or not? If our input signal is just from Low to high and keep the status in high, how is the output level? 0 Locked

    331 views
    3 replies
    Latest over 4 years ago
    by Rami Mooti1
  • Not Answered

    SN74LVC244A: Output is abnormal 0 Locked

    257 views
    1 reply
    Latest over 4 years ago
    by Clemens Ladisch
  • Answered

    SN74LVC1G125: About short circuit between pins of SN74LVC1G125 0 Locked

    269 views
    1 reply
    Latest over 4 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LXC8T245: Unused I/O's of SN74LXC8T245 0 Locked

    368 views
    1 reply
    Latest over 4 years ago
    by Clemens Ladisch
  • Answered

    SN74LVC2G74-Q1: What is the sample timing of the input high/low 0 Locked

    542 views
    3 replies
    Latest over 4 years ago
    by Clemens Ladisch
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