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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

    SN54LS221: Does anyone know if the part is still available? If so where can it be optained? 0 Locked

    431 views
    3 replies
    Latest over 5 years ago
    by J Roy
  • Suggested Answer

    SN74LVC1G17: Undershoot of output waveform of SN74LVC1G17 0 Locked

    2164 views
    12 replies
    Latest over 5 years ago
    by Dylan Hubbard
  • Suggested Answer

    SN74LVC1G02: Number of transistors 0 Locked

    452 views
    1 reply
    Latest over 5 years ago
    by Dylan Hubbard
  • Not Answered

    SN74LVC2G14: 【Material content】Total device mass (mg) differences 0 Locked

    254 views
    1 reply
    Latest over 5 years ago
    by Dylan Hubbard
  • Answered

    SN74LV32A: Electrical characteristics for Logic IC (SN74LV32A) 0 Locked

    333 views
    3 replies
    Latest over 5 years ago
    by Dylan Hubbard
  • Suggested Answer

    SN74LV4T125: SN74LV4T125 max supporting length? 0 Locked

    368 views
    1 reply
    Latest over 5 years ago
    by Dylan Hubbard
  • Suggested Answer

    Fan out Buffer 0 Locked

    347 views
    1 reply
    Latest over 5 years ago
    by Dylan Hubbard
  • Suggested Answer

    Cant find datasheet 0 Locked

    541 views
    1 reply
    Latest over 5 years ago
    by Dylan Hubbard
  • Suggested Answer

    SN74AVC4T774: What is status of A side when VccA no bias voltage? 0 Locked

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

    LSF0102: What is status of A side when Vref_A no bias voltage? 0 Locked

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

    TXS02612: About DAT0Bx out put level issue 0 Locked

    458 views
    4 replies
    Latest over 5 years ago
    by Tsukui Yusuke
  • Not Answered

    TXS0108E: Issue interfacing this part to SD Card (level translating b/w 1.8V and 3.3V) 0 Locked

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

    LSF0204: Asking for the LSF0204RUTR design question 0 Locked

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

    SN74GTLPH16912: VTT & VREF Supply Voltage 0 Locked

    396 views
    3 replies
    Latest over 5 years ago
    by Karan Kotadia
  • Suggested Answer

    SN74LVC2G14: Input Current showes different with the datasheet 0 Locked

    619 views
    8 replies
    Latest over 5 years ago
    by Karan Kotadia
  • Answered

    SN74LVCC3245A: Marking date code. 0 Locked

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

    SN74HC244-Q1: How to deal with non-used channel 0 Locked

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

    SN74LVCH16T245-EP: Output state During Power Up 0 Locked

    801 views
    3 replies
    Latest over 5 years ago
    by Dylan Hubbard
  • Answered

    SN74LVC1G08: LVC logic family exceeding absolute min and max input voltages by adhering to 50mA input current limit constraint 0 Locked

    499 views
    7 replies
    Latest over 5 years ago
    by Dylan Hubbard
  • Suggested Answer

    SN74LVC2G07: The input is about -570mv a little larger than the datasheet spec -0.5v, Does it has risks and what's the risks? 0 Locked

    426 views
    1 reply
    Latest over 5 years ago
    by Dylan Hubbard
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