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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

    SN74LVC157A: Where to connect the exposed pad? 0 Locked

    359 views
    1 reply
    Latest over 4 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74AVC4T774: SN74AVC4T774RSVR consuming high current 0 Locked

    749 views
    7 replies
    Latest over 4 years ago
    by Dylan Hubbard
  • Suggested Answer

    TXS0108E-Q1: TXS0108E-Q1 0 Locked

    216 views
    1 reply
    Latest over 4 years ago
    by Dylan Hubbard
  • Answered

    SN74LVC1T45-Q1: Capacitance on VCCA and back feed 0 Locked

    835 views
    1 reply
    Latest over 4 years ago
    by Dylan Hubbard
  • Suggested Answer

    TXB0104: About tape and reel on UQFN package 0 Locked

    315 views
    2 replies
    Latest over 4 years ago
    by Dylan Hubbard
  • Answered

    LSF0108-Q1: Threshold at which the switch is turned on or off 0 Locked

    382 views
    2 replies
    Latest over 4 years ago
    by Koji Hayashi92
  • Suggested Answer

    SN74LVC1G07: Use SN74LVC1G07 as driver, but no output from device 0 Locked

    1254 views
    3 replies
    Latest over 4 years ago
    by Dylan Hubbard
  • Answered

    TXB0104: Series resistance on IO lines 0 Locked

    384 views
    7 replies
    Latest over 4 years ago
    by Giuliano FRANCHETTO
  • Suggested Answer

    LSF0204: Need of Pull up 0 Locked

    247 views
    1 reply
    Latest over 4 years ago
    by Dylan Hubbard
  • Answered

    SN74LVT16245B: Different results produced by 2 different printed chips of SN74LVT16245BDGGR 0 Locked

    579 views
    7 replies
    Latest over 4 years ago
    by Jonathan Geronga
  • Answered

    SN74LVC2G07: theta jc or theta jb and max op junction temperature needed 0 Locked

    452 views
    2 replies
    Latest over 4 years ago
    by Emrys Maier
  • Suggested Answer

    TXB0104: Use of TXB familly with component with internal pullups 0 Locked

    334 views
    1 reply
    Latest over 4 years ago
    by Clemens Ladisch
  • Answered

    SN74LVC2T45: DIR pin pull-up to VCCB 0 Locked

    276 views
    1 reply
    Latest over 4 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LVC1G08: Outputs going above VCC, what is allowed? 0 Locked

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

    TXB0106-Q1: OE connect to VCCA 0 Locked

    426 views
    2 replies
    Latest over 4 years ago
    by Dylan Hubbard
  • Answered

    Level shifter 0 Locked

    594 views
    1 reply
    Latest over 4 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LVC1G17-Q1: Clamp Diodes at Input? 0 Locked

    889 views
    3 replies
    Latest over 4 years ago
    by Clemens Ladisch
  • Suggested Answer

    TXS0108E: GDN and Pad connection 0 Locked

    234 views
    1 reply
    Latest over 4 years ago
    by Emrys Maier
  • Answered

    SN74AXC4T245: 1.8V to 3V Level Shift 0 Locked

    357 views
    1 reply
    Latest over 4 years ago
    by Dylan Hubbard
  • Answered

    TXB0106: Ground Shifting Issue 0 Locked

    662 views
    7 replies
    Latest over 4 years ago
    by Arijeet Saha
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