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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 7 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 7 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 7 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 7 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 7 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 7 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 7 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 7 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 7 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 7 years ago
    • Logic
    • Logic forum
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  • Not Answered

    [FAQ] Frequently Asked Questions: TPLD 0 Locked

    2811 views
    0 replies
    Started over 1 year ago
    by Malcolm Lyn
  • Answered

    [FAQ] [H] Frequently Asked Questions: Logic and Voltage Translation 0 Locked

    45320 views
    1 reply
    Latest over 4 years ago
    by Michael J Schultis
  • Suggested Answer

    TPSM63603E: Switch node 0

    15 views
    4 replies
    Latest 1 hour ago
    by Frank De Stasi
  • Not Answered

    SN74AVC4T774: Letter of Volatility Request 0

    1 view
    0 replies
    Started 1 hour ago
    by Claudia R Martinez
  • Not Answered

    SN74LVC2G34: SN74LVC2G34DCKR Thermal Resistance Data 0

    7 views
    0 replies
    Started 2 hours ago
    by Claudia Dufour
  • Not Answered

    CD4051B: Significant device behavioural change masquerading as a non-issue between datasheet revisions 0

    68 views
    4 replies
    Latest 2 hours ago
    by Nir Gilgur
  • Suggested Answer

    TXS0108E: What happen if we did not provide Pull down on OE line? 0

    46 views
    4 replies
    Latest 2 hours ago
    by Sagar Kumar
  • Suggested Answer

    SN74LV8T245: Input voltage tolerance on IO pins 0

    52 views
    4 replies
    Latest 3 hours ago
    by Joshua Salinas
  • Answered

    TPLD2001: No simulation in interconnect studio 0

    25 views
    2 replies
    Latest 4 hours ago
    by Clément Letonnelier
  • Suggested Answer

    SN74LV1T34: VCC=open, Input=3.3V 0

    57 views
    6 replies
    Latest 5 hours ago
    by Joshua Salinas
  • Suggested Answer

    SN74AVC4T245: SN74AVC4T245PWR unpredictable consumption on sleep mode 0

    27 views
    2 replies
    Latest 5 hours ago
    by Joshua Salinas
  • Not Answered

    SN74HC74-Q1: Failure in time (FIT) number for SN74HC74QPWRQ1 0

    9 views
    0 replies
    Started 11 hours ago
    by Nikhil Jose
  • Not Answered

    MSPM0G5187: Clarification on Generating Separate Main and Non-Main DFU Images 0

    4 views
    0 replies
    Started 12 hours ago
    by Ramanathan S
  • Not Answered

    SN74LVC1G14: Inverter need more current 0

    14 views
    0 replies
    Started 16 hours ago
    by Pascal Schneider
  • Not Answered

    SN74LVC125A: SN74LVC125ARGYR Thermal Resistance Data 0

    15 views
    0 replies
    Started 22 hours ago
    by Claudia Dufour
  • Suggested Answer

    SN54ACT74: SN54ACT7811GB Mechanical Package Data 0

    15 views
    1 reply
    Latest 1 day ago
    by Chris Pui
  • Answered

    SN54LVC08A: Missing Package Spec 0

    15 views
    1 reply
    Latest 1 day ago
    by Malcolm Lyn
  • Not Answered

    SN74LV1T125: Noise is superimposed on the output in addition to the input pulse 0

    67 views
    5 replies
    Latest 1 day ago
    by Joshua Salinas
  • Suggested Answer

    SN74AVC2T245: Support Request – Unexpected Output Voltage on SN74AVC2T245 When VCCA and VCCB Are Powered Off 0

    42 views
    3 replies
    Latest 1 day ago
    by Joshua Salinas
  • Suggested Answer

    SN74LVC1G00: SN74LVC1G00 and SN74LVC1G126 0

    21 views
    1 reply
    Latest 1 day ago
    by Clemens Ladisch
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