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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

    SN74ALVC164245: Input Voltage Range 0 Locked

    712 views
    13 replies
    Latest over 1 year ago
    by Michael Ikwuyum
  • Answered

    SN74LVC1G14: can meet the freq at 60~128Hz? 0 Locked

    316 views
    1 reply
    Latest over 1 year ago
    by Clemens Ladisch
  • Answered

    SN74LV4046A: Output of PC2_OUT and PCP_OUT 0 Locked

    682 views
    10 replies
    Latest over 1 year ago
    by Connor Lewis
  • Suggested Answer

    SN74S38: ESD data request 0 Locked

    283 views
    1 reply
    Latest over 1 year ago
    by Malcolm Lyn
  • Suggested Answer

    I have requirement of controlling voltage from 22V to 29V 0 Locked

    382 views
    7 replies
    Latest over 1 year ago
    by Ron Michallick
  • Suggested Answer

    TXB0304: Recommended SPI buffer 0 Locked

    608 views
    4 replies
    Latest over 1 year ago
    by Clemens Ladisch
  • Suggested Answer

    SN74F112: One circuit didn't work. 0 Locked

    293 views
    1 reply
    Latest over 1 year ago
    by Clemens Ladisch
  • Suggested Answer

    SN74ALS32: ESD data request 0 Locked

    315 views
    1 reply
    Latest over 1 year ago
    by Albert Xu1
  • Answered

    SN74ABT540: VOL vs IOL 0 Locked

    261 views
    3 replies
    Latest over 1 year ago
    by Clemens Ladisch
  • Answered

    TXS0104E: I2C RTC hang issue in RF immunity with use of TXS104E 0 Locked

    341 views
    7 replies
    Latest over 1 year ago
    by Jagdish Karamchandani
  • Answered

    SN7402: Quad Dual-Input NOR Gate -- inputs are sinking substantial current when a logical high is applied (!?!) 0 Locked

    879 views
    6 replies
    Latest over 1 year ago
    by Richard Bonomo
  • Answered

    SN74LVC8T245-Q1: SN74LVC8T245 Conditions that translation direction swaps? 0 Locked

    471 views
    4 replies
    Latest over 1 year ago
    by D J
  • Answered

    SN74AUP2G04: Input is at 3.3V but no Vcc or gnd connected. 0 Locked

    296 views
    1 reply
    Latest over 1 year ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LVC1G32-Q1: Input and Output Pin Impedance 0 Locked

    324 views
    1 reply
    Latest over 1 year ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LVC1G17: Regarding thermal data 0 Locked

    299 views
    2 replies
    Latest over 1 year ago
    by Albert Xu1
  • Not Answered

    TAS2505EVM: TAS2505EVM 0 Locked

    830 views
    1 reply
    Latest over 1 year ago
    by Ivan Salazar
  • Answered

    SN74AUP1T32: Output state with an Open Input. 0 Locked

    288 views
    4 replies
    Latest over 1 year ago
    by Scott Morrill
  • Suggested Answer

    LSF0102-Q1: Pullup Resistor 0 Locked

    669 views
    8 replies
    Latest over 1 year ago
    by Scarlett Cao
  • Answered

    SN74LVC86A-Q1: Enquiry about Automotive part qualification 0 Locked

    243 views
    2 replies
    Latest over 1 year ago
    by Sanesh Sanjai
  • Answered

    TXB0106: Is it recommended to add the serial resistors between TXB0106 and MCU? 0 Locked

    287 views
    2 replies
    Latest over 1 year ago
    by Shaofeng Luo
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