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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

    SN54ACT11: MSL for 5962-9077201Q2A 0

    55 views
    2 replies
    Latest 19 days ago
    by Todd Manning
  • Suggested Answer

    SN74LVC1G04: Part usage 0

    55 views
    1 reply
    Latest 19 days ago
    by Albert Xu1
  • Suggested Answer

    CD4093B: CD4093B spec degrade or not at 5kM Altitude 0

    52 views
    1 reply
    Latest 19 days ago
    by Albert Xu1
  • Suggested Answer

    SN74LVC4245A: SN74LVC4245APWR performance degrade at 4km altitude 0

    39 views
    1 reply
    Latest 19 days ago
    by Joshua Salinas
  • Suggested Answer

    SN74HCT244: Why SN74HCT244N with ROHS=Yes and with NiPdAu lead finish have some parts received with "ROHS EXEMPT" on label? 0

    97 views
    6 replies
    Latest 20 days ago
    by Albert Xu1
  • Suggested Answer

    SN74LVC1G14: About VT+ for 5V Supply 0

    70 views
    1 reply
    Latest 20 days ago
    by Clemens Ladisch
  • Suggested Answer

    SN74AVC16T245: SN74AVC16T245ZQLR 0

    109 views
    3 replies
    Latest 20 days ago
    by Clemens Ladisch
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    TPLD1201-DGS-EVM: TPLD1201-DGS-EVM config fail 0

    143 views
    6 replies
    Latest 20 days ago
    by Gary Chiang
  • Answered

    SN74AHCT541: Regarding Tstg 0

    84 views
    3 replies
    Latest 20 days ago
    by Daisuke Higa
  • Suggested Answer

    SN74HC04: 82AFCNF? 0

    135 views
    6 replies
    Latest 22 days ago
    by Clemens Ladisch
  • Suggested Answer

    CD4056B: ESD and not use IO setting 0

    58 views
    1 reply
    Latest 23 days ago
    by Nikki Dengel
  • Suggested Answer

    SN74LVC1G08: SN74LVC1G08DBVR 0

    51 views
    1 reply
    Latest 23 days ago
    by Nikki Dengel
  • Suggested Answer

    SN74AVC2T45: Request for lead finish details for Part No.SN74AVC2T45DCTR at HFTF assembly site. 0

    99 views
    3 replies
    Latest 23 days ago
    by Joshua Salinas
  • Answered

    SN74LVCH16373A: Question about marking 0

    162 views
    8 replies
    Latest 23 days ago
    by BOBBY
  • Suggested Answer

    CD4081B: Maximum output current from CD4081BE 0

    110 views
    1 reply
    Latest 23 days ago
    by Owen Westfall
  • Answered

    LSF0108: Enabling/Disabling Multiple LSF0108s 0

    190 views
    8 replies
    Latest 23 days ago
    by IDK
  • Suggested Answer

    SN74LVC16T245: 16-bit Level translator AVC vs LVC part query 0

    93 views
    2 replies
    Latest 23 days ago
    by Joshua Salinas
  • Suggested Answer

    CD74HC123: Review schematic function 0

    108 views
    7 replies
    Latest 24 days ago
    by Albert Xu1
  • Suggested Answer

    SN74HC74: Performance Issue 0

    114 views
    5 replies
    Latest 24 days ago
    by Malcolm Lyn
  • Suggested Answer

    TPLD1202-RWB-EVM: When programming the TPLD1202 via the ICS platform, it displays "Oh Snap! The last change caused an exception..." 0

    98 views
    3 replies
    Latest 24 days ago
    by Malcolm Lyn
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