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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

    LSF0204: Threshold voltage of channel and pull-up resistor 0 Locked

    539 views
    4 replies
    Latest over 2 years ago
    by Seunghwan Lee
  • Answered

    SN74LV244A: Regarding thermal information after changed datasheet rev 0 Locked

    357 views
    4 replies
    Latest over 2 years ago
    by Daisuke Higa
  • Answered

    SN74LVC1G175: Q-Output when !CLR and CLK are floating 0 Locked

    308 views
    1 reply
    Latest over 2 years ago
    by Emrys Maier
  • Suggested Answer

    SN74LVC1G32: Unpowered gate 0 Locked

    474 views
    1 reply
    Latest over 2 years ago
    by Clemens Ladisch
  • Suggested Answer

    LSF0108: slow rise time 0 Locked

    544 views
    3 replies
    Latest over 2 years ago
    by Clemens Ladisch
  • Suggested Answer

    LSF0102-Q1: we are planning to use the LSF0102QDCURQ1 part for MDC/MDIO buffer 0 Locked

    415 views
    1 reply
    Latest over 2 years ago
    by Michael Ikwuyum
  • Suggested Answer

    TXS02326A: Error communicating with the sim card 0 Locked

    651 views
    11 replies
    Latest over 2 years ago
    by Michael Ikwuyum
  • Suggested Answer

    SN74LS32: check chemical materials 0 Locked

    397 views
    1 reply
    Latest over 2 years ago
    by Emrys Maier
  • Suggested Answer

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    262 views
    1 reply
    Latest over 2 years ago
    by Emrys Maier
  • Answered

    CD4044B: High voltage signals to interface with microcontroller 0 Locked

    453 views
    7 replies
    Latest over 2 years ago
    by Sahil
  • Answered

    SN74LVC1G08: Propagation delay distribution on LVC devices 0 Locked

    461 views
    1 reply
    Latest over 2 years ago
    by Clemens Ladisch
  • Answered

    SN74AVC4T774: MISO input from SPI1 cannot be pulled low by SoC and SPI2 0 Locked

    259 views
    1 reply
    Latest over 2 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LVC1G08: Overshoot and ringing at the output 0 Locked

    704 views
    3 replies
    Latest over 2 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LV8T245: SPI 133M buffer 0 Locked

    517 views
    1 reply
    Latest over 2 years ago
    by Clemens Ladisch
  • Suggested Answer

    LSF0108-Q1: LSF0108-Q1 Functional safety information 0 Locked

    346 views
    3 replies
    Latest over 2 years ago
    by Yuan Rao
  • Suggested Answer

    TXS0206: About UHS-1 operation 0 Locked

    268 views
    1 reply
    Latest over 2 years ago
    by Michael Ikwuyum
  • Answered

    SN74AVC20T245: Schematics Review 0 Locked

    407 views
    3 replies
    Latest over 2 years ago
    by Clemens Ladisch
  • Answered

    SN74HC595: /SRCLR set-up time 0 Locked

    350 views
    1 reply
    Latest over 2 years ago
    by Clemens Ladisch
  • Answered

    SN74LVC8T245: Query regarding VOH 0 Locked

    487 views
    13 replies
    Latest over 2 years ago
    by Sanjitsingh Rait
  • Answered

    SN74LVC1T45: Power-up sequence 0 Locked

    357 views
    1 reply
    Latest over 2 years ago
    by Swathi D
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