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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

    TXS0108E: 10Mbps push-pull to 10Mbps OD interface 0 Locked

    380 views
    9 replies
    Latest over 5 years ago
    by Dylan Hubbard
  • Suggested Answer

    SN74LS674: Clarification on how the data is latched 0 Locked

    451 views
    1 reply
    Latest over 5 years ago
    by Emrys Maier
  • Suggested Answer

    CD74AC14: Threshold voltage (high and low) for the CD74AC14M when VCC is 3.3V or 3V 0 Locked

    524 views
    2 replies
    Latest over 5 years ago
    by Danilo A.
  • Suggested Answer

    SN54LVTH162244-SP: Looking for JB, JC thermal information 0 Locked

    874 views
    4 replies
    Latest over 5 years ago
    by Emrys Maier
  • Suggested Answer

    SN74LVT244B: About PSPICE model. 0 Locked

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

    SN74LVC16T245: Series Resistors 0 Locked

    327 views
    1 reply
    Latest over 5 years ago
    by Emrys Maier
  • Answered

    SN74LVC2G06: Alternative IBIS model 0 Locked

    456 views
    2 replies
    Latest over 5 years ago
    by Art Mecina
  • Answered

    SN74LVC2G07: Please help to share the comment about Vih (Min. 2V) 0 Locked

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

    SN74HC74: regarding PCN 20200629000.1 (Qualification of new Fab site (RFAB) using qualified Process Technology, Die Revision, and additional Assembly site/BOM options for select devices) 0 Locked

    641 views
    1 reply
    Latest over 5 years ago
    by Emrys Maier
  • Suggested Answer

    TXS0108E: On the previous datasheet, themin VCCA was 1.2V, the reason for the change to 1.4V? 0 Locked

    748 views
    2 replies
    Latest over 5 years ago
    by Emrys Maier
  • Answered

    TXS0108E: Can TXS0108E support 10MHz MDIO signal voltage level shift? 0 Locked

    516 views
    4 replies
    Latest over 5 years ago
    by Emrys Maier
  • Suggested Answer

    SN74LVC2T45: SN74LVC2T45 0 Locked

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

    SN54HC04-SP: operating HC04 IC with -5V supply. 0 Locked

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

    TXB0108: Circuit with two TXB0108 connected in series 0 Locked

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

    SN74LVC2G17-Q1: SC70 package layout 0 Locked

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

    SN74AHCT374: Is there waveform data showing the characteristics of input voltage and consumption current ? 0 Locked

    398 views
    5 replies
    Latest over 5 years ago
    by Clemens Ladisch
  • Not Answered

    SN74GTL2014: how to reduce the negative voltage of the SN74GTL2014 0 Locked

    428 views
    7 replies
    Latest over 5 years ago
    by Frank Xiao
  • Suggested Answer

    SN74AXC8T245: Compatibility with Xilinx Zynq Ultrascale FPGA 0 Locked

    1146 views
    8 replies
    Latest over 5 years ago
    by RajK
  • Not Answered

    SN74AHCT541: SN74AHCT541PW output incorrect voltage 0 Locked

    763 views
    1 reply
    Latest over 5 years ago
    by Emrys Maier
  • Suggested Answer

    SN74LVC1G125: pull up/down resistor for SN74LVC1G125 & SN74LVC1G126 0 Locked

    492 views
    1 reply
    Latest over 5 years ago
    by Clemens Ladisch
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