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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

    SN74LV1T125: Connect two SN74LV1T125 to level translate from 1.8V to 5V 0 Locked

    614 views
    2 replies
    Latest over 4 years ago
    by Danilo A.
  • Answered

    SN74AXC8T245: VCCA>VCCB or VCCA<VCCB 0 Locked

    375 views
    1 reply
    Latest over 4 years ago
    by Rami Mooti1
  • Answered

    TXU0304-Q1: RTM and package info? 0 Locked

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

    Looking for a 6-ch low-skew CMOS inverter 0 Locked

    848 views
    4 replies
    Latest over 4 years ago
    by Yubing
  • Not Answered

    SN74LVC1G32: Output of SN74LVC1G32DRYR in 95~100℃ temperature range 0 Locked

    351 views
    6 replies
    Latest over 4 years ago
    by Rami Mooti1
  • Suggested Answer

    SN54LVTH245A-SP: Output impedance? 0 Locked

    325 views
    1 reply
    Latest over 4 years ago
    by Rami Mooti1
  • Not Answered

    SN74LVC245A: SGCC 0 Locked

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

    SN74LVC2G74: high current on clear input 0 Locked

    342 views
    1 reply
    Latest over 4 years ago
    by Rami Mooti1
  • Suggested Answer

    SN74LVC162244A: Max Junction Temperature 0 Locked

    308 views
    1 reply
    Latest over 4 years ago
    by Anthony Viviano
  • Answered

    SN74ALS642A-1: a question regarding the interpretation of the data sheet of SN 74 ALS 642 A. 0 Locked

    404 views
    4 replies
    Latest over 4 years ago
    by Rami Mooti1
  • Suggested Answer

    SN74LV123A: SN74LV123ATPWRG4Q1 0 Locked

    662 views
    15 replies
    Latest over 4 years ago
    by Emrys Maier
  • Answered

    SN74AXC4T774EVM: B2 line not functioning as expected in RSV package whicle works fine with PW 0 Locked

    467 views
    8 replies
    Latest over 4 years ago
    by Adarsh Chengot Poonthottathil
  • Suggested Answer

    TXB0104-Q1: What value of its Cin 0 Locked

    196 views
    1 reply
    Latest over 4 years ago
    by Emrys Maier
  • Suggested Answer

    SN74AVC16T245: SN74AVC16T245DGVR 0 Locked

    320 views
    1 reply
    Latest over 4 years ago
    by Emrys Maier
  • Suggested Answer

    SN74LVC2G126: SN74LVC2G126DCUT support maximum signal frequency limit(bandwidth) 0 Locked

    451 views
    1 reply
    Latest over 4 years ago
    by Emrys Maier
  • Suggested Answer

    SN74AHC1G32: What is the status of output signal? 0 Locked

    340 views
    1 reply
    Latest over 4 years ago
    by Emrys Maier
  • Suggested Answer

    SN74HC595: The status of Q output when the IC started 0 Locked

    316 views
    1 reply
    Latest over 4 years ago
    by Emrys Maier
  • Suggested Answer

    SN74AHC245: Vin(signal) operating voltage 0 Locked

    518 views
    7 replies
    Latest over 4 years ago
    by Rami Mooti1
  • Answered

    TXS0108E: Level translator for MII interface 0 Locked

    720 views
    3 replies
    Latest over 4 years ago
    by Rami Mooti1
  • Suggested Answer

    SN74AHCT244: SN74AHCT244DW vs SN74AHCT244MDWREP 0 Locked

    399 views
    3 replies
    Latest over 4 years ago
    by Dylan Hubbard
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