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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] Difference between Multiplexer/De-multiplexer and Analog Switch

    Hari T O0
    Hari T O0
    Other Parts Discussed in Thread: TS5A3159-Q1 , TMUX1209 FAQ: Logic and Voltage Translation > Logic Technology >> Current FAQ Hi Team, May I know difference is there between mux/demux IC's and analog switch IC's? I'm comparing this in the context…
    • Answered
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] How do I determine the output voltage (VOH, VOL) or output current (IOH, IOL) of a CMOS logic device?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Output Parameters >> Current FAQ The high logic level output voltage of a logic device with no load will be the supply voltage. The output current of a logic device is determined by the load connected to the device…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] What happens when I connect a logic device's output to a 50 ohm transmission line?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Output Parameters >> Current FAQ Transmission lines cause a lot of confusion for engineers. I hope to clear up some of that here. I will break this up into a few sections, so if you already know something you can…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] Can I connect two outputs from a CMOS logic device together directly?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Output Parameters >> Current FAQ **** It's important to note that this FAQ is in reference to CMOS devices. Bipolar devices should not be paralleled in this fashion. **** The primary concern with connecting outputs…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] What does 'partial power down' or 'Ioff' mean in the datasheet?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Logic Technology >> Current FAQ The " Ioff " specification in the electrical characteristics table is only in the datasheet of devices that have the special feature of " partial power down " - also known as " back…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] Why does my device not switch at VIH or VIL?

    Karan Kotadia
    Karan Kotadia
    Other Parts Discussed in Thread: SN74LVC1G08 FAQ: Logic and Voltage Translation > Input Parameters >> Current FAQ What is V IH and V IL ? JEDEC - V IH min is the least positive (most negative) value of high-level input voltage for which operation…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] How do I size pull-up or pull-down resistors?

    Emrys Maier
    Emrys Maier
    Other Parts Discussed in Thread: SN74AUP1G34 FAQ: Logic and Voltage Translation > Input Parameters >> Current FAQ Pull-up and pull-down resistors are required in many logic systems to provide a valid logic state when a wire connected to a CMOS input…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] What is the maximum data rate (or operating frequency) for a logic gate or buffer?

    Emrys Maier
    Emrys Maier
    Other Parts Discussed in Thread: SN74LVC1G34 , SN74LVC1G79 FAQ: Logic and Voltage Translation > Timing Parameters >> Current FAQ ** NOTE ** This FAQ is in reference to push-pull output devices. Open-drain outputs will inherently have slower operating…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] What is the output voltage (VOH or VOL) when the output current is X or the supply voltage is Y?

    Karan Kotadia
    Karan Kotadia
    FAQ: Logic and Voltage Translation > Output Parameters >> Current FAQ There are circumstances where you might want to know a VOH or VOL Value that is not given. I will describe two cases: If you want VOH for a supply voltage that is not given (for…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] How do the LSF translators work?

    Emrys Maier
    Emrys Maier
    Other Parts Discussed in Thread: LSF0101 , LSF0002 , LSF0102 , LSF0204 , LSF0204D , LSF0108 , LSF0102-Q1 , LSF0204-Q1 , LSF0108-Q1 FAQ: Logic and Voltage Translation > Voltage Translators >> Current FAQ The LSF family of translators generates more questions…
    • over 6 years ago
    • Logic
    • Logic forum
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  • Answered

    SN74LVC1G04: Slow Clock 0 Locked

    1648 views
    1 reply
    Latest over 7 years ago
    by Emrys Maier
  • Answered

    SN74LVCH16T245: SN74LVCH16T245 Floating Inputs / Outputs 0 Locked

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

    TXS02612: SDIO Signal issue 0 Locked

    6414 views
    18 replies
    Latest over 7 years ago
    by Charles (KAT) Zhang
  • Suggested Answer

    TXS0104E: timing issue 0 Locked

    1677 views
    6 replies
    Latest over 7 years ago
    by Emrys Maier
  • Suggested Answer

    LSF0102: TRANSLATOR LSF0102DQER and SN74LV4T125PWR 0 Locked

    1764 views
    5 replies
    Latest over 7 years ago
    by Emrys Maier
  • Suggested Answer

    SN74AVC16T245: SN74AVC16T245 voltage translation for <100Mbps 0 Locked

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

    sn74lvc1g97: Links to IBIS Models Appear to be Broken ... 0 Locked

    654 views
    3 replies
    Latest over 7 years ago
    by Michael J Schultis
  • Suggested Answer

    Voltage Translator Selection 0 Locked

    1303 views
    10 replies
    Latest over 7 years ago
    by Emrys Maier
  • Answered

    SN74HC139-Q1: VIH_min and VIL_max value under Vcc=3.3V 0 Locked

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

    CD4047B: Pin 10 maximum output current/power 0 Locked

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

    "LM103" Product checking information related with National Semiconductor Parts 0 Locked

    619 views
    1 reply
    Latest over 7 years ago
    by Cameron Phillips
  • Suggested Answer

    TXS0102: Operating Junction Temperature 0 Locked

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

    SN74HCT540: Looking for better parts 0 Locked

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

    SN74LS14: SN74LS14 0 Locked

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

    SN74LVC8T245: May SN74LVC8T245 Port B input maximum input current should be 50uA (ΔICCB)? 0 Locked

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

    CD74HC597: 74HC597D 0 Locked

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

    LSF0108: Voltage conversion of less than 3.3 V 0 Locked

    741 views
    3 replies
    Latest over 7 years ago
    by Simon Yan
  • Suggested Answer

    SN7407: AEC-Q100 Qualified Version 0 Locked

    1341 views
    5 replies
    Latest over 7 years ago
    by Emrys Maier
  • Suggested Answer

    SN74LV1T125: 3V3 pull-up resistor connected to input while VCC off 0 Locked

    709 views
    1 reply
    Latest over 7 years ago
    by Emrys Maier
  • Answered

    SN74LVC2G79: Clarification on CPD for LVC2G79 needed 0 Locked

    663 views
    3 replies
    Latest over 7 years ago
    by Emrys Maier
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