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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

    SN74LVC2G74-EP: output when inputs PRE=high, CLR=high, CLK=Low, and D=X 0 Locked

    464 views
    1 reply
    Latest over 7 years ago
    by Wade Vonbergen
  • Answered

    SN74HCT245: current drive capability 0 Locked

    492 views
    2 replies
    Latest over 7 years ago
    by [FAE] Andrew Wang
  • Suggested Answer

    CD74HC123: PIN ISSUE 0 Locked

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

    SN74HCT244: Do you have any data or graph about propagation delay (tpd)? 0 Locked

    642 views
    2 replies
    Latest over 7 years ago
    by Kazuya Nakai59
  • Answered

    SN74HC244: Do you have any data or graph about propagation delay (tpd) on SN74HC244? 0 Locked

    391 views
    2 replies
    Latest over 7 years ago
    by Kazuya Nakai59
  • Suggested Answer

    CD4541B: set the timer IC to count 390s 0 Locked

    553 views
    3 replies
    Latest over 7 years ago
    by Emrys Maier
  • Suggested Answer

    SN74AVCH1T45: Pin function/assignment needed for SN74AVCH1T45 in YZP package 0 Locked

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

    LSF0108: Thermal Pad connection 0 Locked

    384 views
    1 reply
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    by Emrys Maier
  • Answered

    SN74AVC4T245-Q1: Output State During Power-Up 0 Locked

    424 views
    2 replies
    Latest over 7 years ago
    by Jordan White
  • Suggested Answer

    SN74GTL16612: GTL/GTLP/BTL 0 Locked

    570 views
    3 replies
    Latest over 7 years ago
    by Emrys Maier
  • Answered

    TXS0108E: The TXS0108E Current consumption at UART load 0 Locked

    467 views
    1 reply
    Latest over 7 years ago
    by ShreyasRao
  • Answered

    TXB0108: Does TXB0108 have any diode for ESD protection at An, Bn and OE terminals? 0 Locked

    538 views
    5 replies
    Latest over 7 years ago
    by ShreyasRao
  • Suggested Answer

    SN74ALVCH16244: Power Good goes low being connected to Buffer IC 0 Locked

    1645 views
    4 replies
    Latest over 7 years ago
    by Maksim Popov
  • Answered

    CD74HC4050: Is there marking correct ? (CD74HC4050) 0 Locked

    2401 views
    13 replies
    Latest over 7 years ago
    by park junseck
  • Suggested Answer

    SN74AUP1G08-Q1: Side effect of Vi>Vcc 0 Locked

    657 views
    2 replies
    Latest over 7 years ago
    by Antony Lin
  • Suggested Answer

    SN74AVC8T245: unused input pins 0 Locked

    387 views
    1 reply
    Latest over 7 years ago
    by ShreyasRao
  • Suggested Answer

    CD74AC253: DURING POWER UP THE STATE OF THIS COMPONENT 0 Locked

    364 views
    1 reply
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    by Emrys Maier
  • Suggested Answer

    SN74LVC244A: ECCN classification 0 Locked

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

    SN74LVC1G32-Q1: Side effect of Vi>Vcc 0 Locked

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

    LSF0108: The poor signal integrity in B port 0 Locked

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