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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

    SN74LS125A: Replacement of SN74LS125AN 0 Locked

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

    SN74F08: Output capacitance 0 Locked

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

    SN74LVC2T45: High-Impedance State values confirmation 0 Locked

    209 views
    1 reply
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    by Clemens Ladisch
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    SN74LVC8T245: Is this part suitable for RGMII interface translation? 0 Locked

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  • Not Answered

    CY74FCT541T: Pin compatible component 0 Locked

    181 views
    1 reply
    Latest over 5 years ago
    by Clemens Ladisch
  • Answered

    SMV512K32-SP: tAVWL Write Cycle Timing 0 Locked

    409 views
    1 reply
    Latest over 5 years ago
    by Jake Bettis1
  • Answered

    SN74LVC1G14: SN74LVC1G14: Datasheet Mismatch (Threshold Voltages) 0 Locked

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

    SN74LV244A: How to Know Output Resistor Need 0 Locked

    478 views
    1 reply
    Latest over 5 years ago
    by Clemens Ladisch
  • Answered

    Require TOP MARKING 0 Locked

    261 views
    1 reply
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    by Ikechukwu Anyiam
  • Answered

    SN74LVC1G373: Trouble with status of Q output after power-up 0 Locked

    1152 views
    4 replies
    Latest over 5 years ago
    by sebastien salmon
  • Answered

    SN74LVC245A: SN74LVC245A in Mixed Voltage during Power-Up 0 Locked

    364 views
    1 reply
    Latest over 5 years ago
    by Chad Crosby
  • Suggested Answer

    SN54HC574: JM38510/65604BRA VS SNJ54HC574J 0 Locked

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    by Chad Crosby
  • Not Answered

    SN74LS02: Simulation issue: SN74LS02 gate rise- and fall-times depends on input frequency 0 Locked

    271 views
    1 reply
    Latest over 5 years ago
    by Chad Crosby
  • Not Answered

    TXS0102: about Level shifter TXS0102 for I2C signal 0 Locked

    2871 views
    1 reply
    Latest over 5 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74AUP1T34: High to Low Voltage Translation 0 Locked

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

    SN74AUP1T34: Tying VCCA and A Pins 0 Locked

    311 views
    1 reply
    Latest over 5 years ago
    by Clemens Ladisch
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    LSF0204: If can be used for 1.8V LVCMOS level shifter 0 Locked

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

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    312 views
    2 replies
    Latest over 5 years ago
    by Lee Chiew Teik
  • Not Answered

    CD74HC283: ESD spec(HBM/CDM) of CD74HC283M 0 Locked

    346 views
    2 replies
    Latest over 5 years ago
    by Masahiro Chino
  • Suggested Answer

    CD74HC4060: CD74HC4060m96 0 Locked

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