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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

    LSF0102: Question about LDO to VrefA 0 Locked

    129 views
    2 replies
    Latest 6 months ago
    by Jack Guan
  • Suggested Answer

    TXS0108E: Damage to the +3.3V System When Using TXS0108E 0 Locked

    179 views
    1 reply
    Latest 6 months ago
    by Jack Guan
  • Answered

    CD74HC4046A: Phase-frequency detector (PFD) noise performance 0 Locked

    255 views
    2 replies
    Latest 6 months ago
    by József Hermann
  • Suggested Answer

    SN74LV221A-Q1: maximum value restriction of Rext and Cext 0 Locked

    139 views
    2 replies
    Latest 6 months ago
    by Emrys Maier
  • Suggested Answer

    SN74HCS240-Q1: CAVC8T245QRHLRQ1, SN74HCS240QWRKSRQ1, TPS386596L33DG, TPS386000RGPR 0 Locked

    115 views
    1 reply
    Latest 6 months ago
    by Malcolm Lyn
  • Suggested Answer

    SN74HCS238: Required Spice model 0 Locked

    124 views
    1 reply
    Latest 6 months ago
    by Malcolm Lyn
  • Suggested Answer

    SN74LVC2G17: SN74LVC2G17 thermal data 0 Locked

    124 views
    1 reply
    Latest 6 months ago
    by Malcolm Lyn
  • Suggested Answer

    SN74AHCT574: SN74AHCT574: IBIS model request 0 Locked

    144 views
    1 reply
    Latest 6 months ago
    by Malcolm Lyn
  • Suggested Answer

    SN74HCS00: SN74HCS00BQAR and SN74HCS02BQAR PSPICE model for LTSPICE 0 Locked

    229 views
    1 reply
    Latest 6 months ago
    by Albert Xu1
  • Answered

    LSF0108: What's the exact voltage of Vref_B for LSF010x? 0 Locked

    310 views
    8 replies
    Latest 6 months ago
    by Jack Guan
  • Suggested Answer

    SN74AVC2T245: VCC Requirement and INT signal query 0 Locked

    163 views
    2 replies
    Latest 6 months ago
    by Joshua Salinas
  • Suggested Answer

    LM51551: POP Certificate 0 Locked

    169 views
    2 replies
    Latest 6 months ago
    by Moritz
  • Answered

    TPS652353: TPS652353 0 Locked

    183 views
    3 replies
    Latest 6 months ago
    by Colin Chen
  • Suggested Answer

    SN74ABT125: Next Gen. Product Suggestion 0 Locked

    125 views
    1 reply
    Latest 6 months ago
    by Clemens Ladisch
  • Answered

    SN74HCS244: Required Spice model 0 Locked

    156 views
    1 reply
    Latest 6 months ago
    by Albert Xu1
  • Suggested Answer

    SN74AHC16244: DGV Footprint 0 Locked

    178 views
    4 replies
    Latest 6 months ago
    by Owen Westfall
  • Suggested Answer

    SN74AVC32T245: Dynamic Direction Change Control Delay 0 Locked

    160 views
    2 replies
    Latest 6 months ago
    by Joshua Salinas
  • Suggested Answer

    CD74HC4515: output of CD74HC4515 0 Locked

    121 views
    1 reply
    Latest 6 months ago
    by Clemens Ladisch
  • Answered

    SN74LVC1G07: input voltage range 0 Locked

    153 views
    2 replies
    Latest 6 months ago
    by kwon
  • Answered

    SN74LVC1G07-Q1: open drain type output 0 Locked

    205 views
    2 replies
    Latest 6 months ago
    by Albert Xu1
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