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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

    SN74AXC8T245: How to deal with the unused Pin 0 Locked

    1322 views
    3 replies
    Latest over 6 years ago
    by Karan Kotadia
  • Answered

    LSF0108: Foot print information for RKS package 0 Locked

    534 views
    1 reply
    Latest over 6 years ago
    by ShreyasRao
  • Suggested Answer

    SN74AVC4T245: SN74AVC4T245 optimized to operate at 1.4V to 3.6V 0 Locked

    375 views
    1 reply
    Latest over 6 years ago
    by ShreyasRao
  • Suggested Answer

    CD4094B: CD4094B Power Up Waveform 0 Locked

    1189 views
    5 replies
    Latest over 6 years ago
    by Emrys Maier
  • Answered

    SN74AUC34: Part Help 0 Locked

    541 views
    4 replies
    Latest over 6 years ago
    by Avi Loschak
  • Not Answered

    CD40107B-MIL: CD40107BF vs CD40107BF3A 0 Locked

    525 views
    1 reply
    Latest over 6 years ago
    by Wade Vonbergen
  • Answered

    SN74AUC34: Vcc bypass capacitors, unused inputs, unused outputs, and pull-up or pull down resistors and calculations 0 Locked

    523 views
    1 reply
    Latest over 6 years ago
    by Emrys Maier
  • Answered

    SN74VMEH22501A-EP: CVMEH22501AIDGGREP 0 Locked

    583 views
    2 replies
    Latest over 6 years ago
    by Wade Vonbergen
  • Suggested Answer

    SN54AC00-SP: Unknown Dimension on Package Drawing 0 Locked

    640 views
    3 replies
    Latest over 6 years ago
    by Wade Vonbergen
  • Answered

    SN74AUP1G125: Input rise time 0 Locked

    499 views
    1 reply
    Latest over 6 years ago
    by Emrys Maier
  • Answered

    TXB0108: scope of auto bidirectional feature of TXB0108 0 Locked

    740 views
    4 replies
    Latest over 6 years ago
    by Vishnu Rachhadiya
  • Answered

    SN74LV123A: Q and Q~ outputs on the condition that CLR~=H, A=L, B~=H 0 Locked

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

    TXS0108E: TXS0108E does not work with SN7402 chip 0 Locked

    883 views
    4 replies
    Latest over 7 years ago
    by Emrys Maier
  • Answered

    SN74AVC8T245: Level translator with high-impedance output during powering up, but enabled automatically after power supply is stable 0 Locked

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

    SN74AVC8T245: Should VQFN's thermal pad connect to GND? 0 Locked

    483 views
    1 reply
    Latest over 7 years ago
    by Dylan Hubbard
  • Answered

    CD74HC123: Max power dissipation 0 Locked

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

    CD4046B: Phase lock loop 0 Locked

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

    TXB0104-Q1: unused pin 0 Locked

    814 views
    3 replies
    Latest over 7 years ago
    by ShreyasRao
  • Not Answered

    CY54FCT245T: I have doubt about the Icc 0 Locked

    369 views
    1 reply
    Latest over 7 years ago
    by Wade Vonbergen
  • Answered

    CD74HC221: CD74HC221M96 HBM ESD level? 0 Locked

    420 views
    1 reply
    Latest over 7 years ago
    by Dylan Hubbard
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