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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

    SN74LVC14A: insert a capacitor on the pin 0 Locked

    751 views
    8 replies
    Latest over 5 years ago
    by Dylan Hubbard
  • Answered

    SN74HC646: DIP Active Version? 0 Locked

    386 views
    3 replies
    Latest over 5 years ago
    by Fred Doe
  • Suggested Answer

    SN74LVC4245A: Pin1 voltage is abnormal 0 Locked

    1356 views
    2 replies
    Latest over 5 years ago
    by Karan Kotadia
  • Suggested Answer

    TXS0206: For SDIO 3.3V-1.8V Voltage-Level Translator application,up to 150Mbps,please give some recommends 0 Locked

    729 views
    1 reply
    Latest over 5 years ago
    by Karan Kotadia
  • Answered

    CD4081B: CD4081B 0 Locked

    439 views
    1 reply
    Latest over 5 years ago
    by Karan Kotadia
  • Suggested Answer

    LSF0204-Q1: Enable pin connection 0 Locked

    734 views
    1 reply
    Latest over 5 years ago
    by Clemens Ladisch
  • Answered

    SN74LVT244B: Is there any problem to use SN74LVT244B like SN74LS243 by external connection? 0 Locked

    722 views
    5 replies
    Latest over 5 years ago
    by Kazuya Nakai59
  • Answered

    SN74AXC8T245-Q1: channel-to-channel skew 0 Locked

    1948 views
    6 replies
    Latest over 5 years ago
    by user3746678
  • Suggested Answer

    SN74LV165A: If SER is not pull down, will it influence output data? 0 Locked

    259 views
    1 reply
    Latest over 5 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LV4320A: High speed level shifter 0 Locked

    440 views
    4 replies
    Latest over 5 years ago
    by Clemens Ladisch
  • Answered

    SN74AUC1G86: Spice model 0 Locked

    550 views
    4 replies
    Latest over 5 years ago
    by John Garrett
  • Suggested Answer

    LSF0102-Q1: Internal fet ON 0 Locked

    459 views
    4 replies
    Latest over 5 years ago
    by Karan Kotadia
  • Not Answered

    SN74LV1T126: Having 3.3V signal into this buffer w/ 1.8V power for the OE pin 0 Locked

    526 views
    1 reply
    Latest over 5 years ago
    by Karan Kotadia
  • Suggested Answer

    TXS0108E: About Vcca(or Vccb) 0 Locked

    336 views
    2 replies
    Latest over 5 years ago
    by Dylan Hubbard
  • Answered

    TXB0104-Q1: When unused pin is open 0 Locked

    420 views
    2 replies
    Latest over 5 years ago
    by Lee, Sam
  • Suggested Answer

    SN74LV1T126: SN74LV1T126 vout 0 Locked

    433 views
    3 replies
    Latest over 5 years ago
    by Clemens Ladisch
  • Answered

    SN74ALVC164245: sn74alvc164245 table 3 question 0 Locked

    331 views
    1 reply
    Latest over 5 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LVC1T45: Level translator cutsom board not providing desired output after 2Mhz 0 Locked

    787 views
    7 replies
    Latest over 5 years ago
    by Gavi Siddu
  • Answered

    TXS02326A: BSI input of TXS02326A 0 Locked

    864 views
    8 replies
    Latest over 5 years ago
    by Lyudmila Voronina
  • Answered

    SN74LVC2G14: what is VT+ voltage range when VCC=5.0V 0 Locked

    559 views
    3 replies
    Latest over 5 years ago
    by Karan Kotadia
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