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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

    SN74LVC16244A: Question on fanout of the output 0 Locked

    258 views
    1 reply
    Latest over 2 years ago
    by Malcolm Lyn
  • Suggested Answer

    SN74LVC125A: Junction to board and junction to case temperature 0 Locked

    303 views
    5 replies
    Latest over 2 years ago
    by Jack Campbell
  • Suggested Answer

    SN74LVC125A: SPI CS Buffering 0 Locked

    291 views
    3 replies
    Latest over 2 years ago
    by Clemens Ladisch
  • Answered

    TXS0108E: sink current capablity 0 Locked

    379 views
    3 replies
    Latest over 2 years ago
    by Clemens Ladisch
  • Answered

    TXS0108E-Q1: maximum output load capacitance 0 Locked

    311 views
    1 reply
    Latest over 2 years ago
    by Clemens Ladisch
  • Answered

    SN54HC595: How to make a test for testing the shift register's basic functionality 0 Locked

    941 views
    3 replies
    Latest over 2 years ago
    by Albert Xu1
  • Suggested Answer

    SN74LV4040A: The latest datasheet reverses the pin functions of pins 9 to 16. 0 Locked

    190 views
    1 reply
    Latest over 2 years ago
    by Malcolm Lyn
  • Suggested Answer

    TXS0108E-Q1: Technical issue 0 Locked

    198 views
    1 reply
    Latest over 2 years ago
    by Jack Guan
  • Suggested Answer

    CODECOMPOSER: CCS coding aids 0 Locked

    145 views
    1 reply
    Latest over 2 years ago
    by Ki
  • Suggested Answer

    SN54ACT14: is an universal sockets? 0 Locked

    263 views
    4 replies
    Latest over 2 years ago
    by Jack Campbell
  • Suggested Answer

    SN74HC165: Schematic check 0 Locked

    634 views
    7 replies
    Latest over 2 years ago
    by Clemens Ladisch
  • Answered

    LSF0108-Q1: Pull up resistors and capacitive coupling Ax <-> Bx 0 Locked

    487 views
    4 replies
    Latest over 2 years ago
    by Jack Guan
  • Answered

    SN74HC595: Difference between "G3", "G4" and standard package 0 Locked

    681 views
    4 replies
    Latest over 2 years ago
    by Vijay Ravindran
  • Answered

    SN74LVC2G07: Abnormal Output Voltage Level & Comparison with SN74LVC2G17-Q1 0 Locked

    473 views
    3 replies
    Latest over 2 years ago
    by Malcolm Lyn
  • Suggested Answer

    SN74LVC1T45-Q1: Input voltage at B input higher than VCCB 0 Locked

    290 views
    1 reply
    Latest over 2 years ago
    by Michael Ikwuyum
  • Not Answered

    SN74LVC1G132: Assist in providing junction-to-case thermal resistance data (Rjc) for various parts 0 Locked

    254 views
    1 reply
    Latest over 2 years ago
    by Jack Campbell
  • Suggested Answer

    SN74GTL2014: Open on one of channel B of SN74GTL2014 0 Locked

    352 views
    6 replies
    Latest over 2 years ago
    by Woon Nee Tan
  • Suggested Answer

    SN74HCT244: Recommended max output current 0 Locked

    262 views
    1 reply
    Latest over 2 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LVC1G123: [Case:710338]Technical Data Inquiry 0 Locked

    276 views
    1 reply
    Latest over 2 years ago
    by Clemens Ladisch
  • Answered

    SN74LVC541A: VOL vs IOL characteristics 0 Locked

    295 views
    3 replies
    Latest over 2 years ago
    by Clemens Ladisch
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