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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] When will TI End of Life (EOL) or Obsolete a certain logic device?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Quality and Manufacturing >> Current FAQ TI's General Quality Guideline (page 7) describes our official policy on obsoleting a device. This policy is summarized below. TI's Product withdrawal/discontinuance process…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] What are the power sequencing requirements for the translation device?

    ShreyasRao
    ShreyasRao
    FAQ: Logic and Voltage Translation > Voltage Translators >> Current FAQ Some of the TI translators have requirements during normal operation mode to have Vcca <= Vccb ( TXS/ TXB01xx) or Vrefb>= VrefA+0.8V(LSF). However, the TI translation devices do…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] What is the difference between IOFF and VCC isolation? What are the conditions to guarantee it?

    ShreyasRao
    ShreyasRao
    FAQ: Logic and Voltage Translation > Logic Technology >> Current FAQ The I OFF specification guarantees the I/O ports are in high impedance whenever either one of the power supply is at pulled to ground (0V) or close to gnd(<100mV as specified for the…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] What should be done with unused I/O pins of the level translator devices?

    ShreyasRao
    ShreyasRao
    FAQ: Logic and Voltage Translation > Voltage Translators >> Current FAQ For the TXB family, unused I/O ports are recommended to be tied to GND through a weak pulldown resistors (>=100kohm). For TXS devices, the internal 10kohm pull-ups resistors will…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] Why is there no PSpice model for a Monostable Multivibrator device?

    Emrys Maier
    Emrys Maier
    Other Parts Discussed in Thread: SN74LVC1G123 FAQ: Logic and Voltage Translation > Monostable Multivibrators >> Current FAQ To make a long post short: MMVs cannot be directly simulated by PSpice because of their direct dependence on external components…
    • over 6 years ago
    • Logic
    • Logic forum
  • [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
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View FAQ threads
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  • Answered

    SN74LVC1G79: output aumatically sets to high when power on 0 Locked

    57 views
    1 reply
    Latest 1 month ago
    by Nikki Dengel
  • Suggested Answer

    SN74HCS02-Q1: Are they available in smaller package 0 Locked

    171 views
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  • Answered

    SN74ALS1034: required ESD ratings 0 Locked

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    by Jyothi Arjilli
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    TPLD2001-DGS-EVM: How to operate the circuit on the evaluation board 0 Locked

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    1 reply
    Latest 1 month ago
    by Albert Xu1
  • Suggested Answer

    SN74HCS08: Shortcut on power supply + 1 input with very low impedance to VCC and GND 0 Locked

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    LM65645: 3D File 0 Locked

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    by Youhao Xi
  • Answered

    SN74HCT244: SN74HCT244 Test Datasheet 0 Locked

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    1 reply
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    by Albert Xu1
  • Answered

    SN74LVC4245A: DIE Revision on specific lot vs PCN 20230322001.1 0 Locked

    67 views
    1 reply
    Latest 1 month ago
    by Joshua Salinas
  • Suggested Answer

    SN74AVCH2T45: Vcc slew rate slower than recommend 0 Locked

    68 views
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    by Joshua Salinas
  • Suggested Answer

    SN74AVC4T245: abnormal waveform 0 Locked

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    SN7417: SN1701022RSBT VVM type and size? 0 Locked

    138 views
    3 replies
    Latest 1 month ago
    by Nick Zahabizadeh
  • Suggested Answer

    SN74AUC1G125: Buffer or level translator that work for logics less than 0.8V 0 Locked

    100 views
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    by Joshua Salinas
  • Answered

    TPLD1201: Some question about TPLD1201.. 0 Locked

    86 views
    1 reply
    Latest 1 month ago
    by Nikki Dengel
  • Suggested Answer

    SN74LVT8986: Thermal Enquiries for SN74LVT8986PM 0 Locked

    110 views
    4 replies
    Latest 1 month ago
    by Owen Westfall
  • Suggested Answer

    SN74LVC1G123: Datasheet Clarification for Discharge on Rext/Cext pin & output pulse constant 0 Locked

    122 views
    1 reply
    Latest 1 month ago
    by Clemens Ladisch
  • Suggested Answer

    SN74AVC4T245: Power VCCB when VCCA is off 0 Locked

    52 views
    1 reply
    Latest 1 month ago
    by Joshua Salinas
  • Answered

    SN74LV1T126: SN74LV1T126 Part variance.. 0 Locked

    94 views
    5 replies
    Latest 1 month ago
    by Joshua Salinas
  • Suggested Answer

    SN74LVC1G175: SN74LVC1G175DCKR : have part with 2249 date code and can i use it ? 0 Locked

    69 views
    1 reply
    Latest 1 month ago
    by Owen Westfall
  • Not Answered

    SN74LVC16245A: I can't use 8 bits. 0 Locked

    51 views
    1 reply
    Latest 1 month ago
    by Owen Westfall
  • Suggested Answer

    SN74AVC24T245: Is VOL(max) characterization available for 0-50C (or similar) 0 Locked

    95 views
    3 replies
    Latest 1 month ago
    by Joshua Salinas
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