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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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  • Answered

    LSF0108: Removal of Rpu 0 Locked

    430 views
    5 replies
    Latest over 3 years ago
    by Emrys Maier
  • Suggested Answer

    SN74LVC2G17: Lead Finish 0 Locked

    545 views
    1 reply
    Latest over 3 years ago
    by Albert Xu1
  • Suggested Answer

    SN74LS377: PINS looks like be oxidized 0 Locked

    711 views
    1 reply
    Latest over 3 years ago
    by Clemens Ladisch
  • Answered

    SN74LVC1T45-Q1: VCC and I/O signal 0 Locked

    325 views
    1 reply
    Latest over 3 years ago
    by Clemens Ladisch
  • Suggested Answer

    TXB0104-Q1: TXB0104QPWRQ1 questions 0 Locked

    591 views
    4 replies
    Latest over 3 years ago
    by guizhang chi
  • Answered

    LSF0102: Pull-up resistor needed for push-pull signal? 0 Locked

    629 views
    1 reply
    Latest over 3 years ago
    by Emrys Maier
  • Suggested Answer

    SN74AUC07: Delta Icc 0 Locked

    528 views
    2 replies
    Latest over 3 years ago
    by Emrys Maier
  • Not Answered

    SN74LVC126A: Can SN74LVC126A support UART(6MHz) data? 0 Locked

    204 views
    2 replies
    Latest over 3 years ago
    by Emrys Maier
  • Suggested Answer

    SN74LVC4245A: Question about the SN74LVC4245A behavior during Power up 0 Locked

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

    SN74LVC1G08: AND gate Vcc 3.3V Vih<1.6V 0 Locked

    363 views
    1 reply
    Latest over 3 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74AVC4T774: Question about SN74AVC4T774RSVR design 0 Locked

    261 views
    1 reply
    Latest over 3 years ago
    by Clemens Ladisch
  • Suggested Answer

    TXS0108E: Problem driving NPN relay 0 Locked

    575 views
    1 reply
    Latest over 3 years ago
    by Clemens Ladisch
  • Not Answered

    TXS0108E: Problem driving NPN relay 0 Locked

    284 views
    0 replies
    Started over 3 years ago
    by Sean Scharffenorth
  • Answered

    TXS0104E: Drive capability of Port B 0 Locked

    529 views
    2 replies
    Latest over 3 years ago
    by Clemens Ladisch
  • Not Answered

    SN74LVCH16T245-EP: SN74LVCH16T245-EP Spec document's V62/09605-01XE Temperature Cycle or Thermal Shock 0 Locked

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

    Operating and storage temperature ranges 0 Locked

    204 views
    1 reply
    Latest over 3 years ago
    by Albert Xu1
  • Answered

    SN74HC594: MAX Clock frequency under Vcc=3.3V condition 0 Locked

    279 views
    1 reply
    Latest over 3 years ago
    by Clemens Ladisch
  • Answered

    SN74HC365: SN74HC365DR & SN74HC365DRE4 difference 0 Locked

    214 views
    1 reply
    Latest over 3 years ago
    by Albert Xu1
  • Suggested Answer

    SN74LV1T34: Asking for the SN74LV1T34DCKR design suggestion 0 Locked

    214 views
    1 reply
    Latest over 3 years ago
    by Albert Xu1
  • Suggested Answer

    LSF0102: low level voltage 0 Locked

    468 views
    6 replies
    Latest over 3 years ago
    by Dylan Hubbard
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