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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] How does a monostable multivibrator (one shot) work?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Monostable Multivibrators >> Current FAQ The above functional block diagram shows generally how a monostable multivibrator (MMV, or one-shot) works. Not all of them have every part shown, but this is the most common…
    • over 5 years ago
    • Logic
    • Logic forum
  • [FAQ] What's the difference between TTL and 5V CMOS logic?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Logic Technology >> Current FAQ It's very common for people to refer to "TTL logic" and to actually mean "5V logic" -- but how are they different? The key difference is in the input and output voltages. This graphic…
    • over 5 years ago
    • Logic
    • Logic forum
  • [FAQ] What is the difference in timing between gates in the same device? How much skew is expected within a given logic device? What is the part-to-part skew?

    Karan Kotadia
    Karan Kotadia
    FAQ: Logic and Voltage Translation > Timing Parameters >> Current FAQ The difference in delay between the individual channels on an individual part is referred to as channel-to-channel skew or output skew. This is typically not covered as a datasheet…
    • over 5 years ago
    • Logic
    • Logic forum
  • [FAQ] What is the difference between the SN74HCxx and the SN74HCxxA?

    Emrys Maier
    Emrys Maier
    Other Parts Discussed in Thread: SN7400 , SN74LS00 FAQ: Logic and Voltage Translation > Logic Technology >> Current FAQ The High-speed CMOS (HC) logic family was created as a direct replacement for older bipolar junction transistor based transistor…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] What method is best used for estimating specification values between those given in the datasheet?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Input Parameters >> Current FAQ The most common example of this question comes from the fact that Standard Logic devices are specified at 1.65V, 3V, and 4.5V, however most engineers use our devices at 1.8V, 3.3V…
    • over 6 years ago
    • Logic
    • Logic forum
  • [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
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  • Not Answered

    SN74LVC1G17: What is the spike leakage current on input pin? 0 Locked

    992 views
    5 replies
    Latest over 4 years ago
    by Emrys Maier
  • Suggested Answer

    SN74LS373: Different between SN74LS373 and SN74HC373 0 Locked

    553 views
    1 reply
    Latest over 4 years ago
    by Clemens Ladisch
  • Suggested Answer

    TXS0102: TXS0102 Rising Time 0 Locked

    453 views
    1 reply
    Latest over 4 years ago
    by Clemens Ladisch
  • Suggested Answer

    LSF0108: VB leak voltage to VrefA 0 Locked

    1103 views
    13 replies
    Latest over 4 years ago
    by Miranda Gu
  • Answered

    SN74AVC4T234: We would like to use this part to translate between 1.0 and 3.3 volts. What would the prop times be at these voltages? 0 Locked

    493 views
    6 replies
    Latest over 4 years ago
    by Bill Kury
  • Suggested Answer

    ESD test results 0 Locked

    306 views
    3 replies
    Latest over 4 years ago
    by Emrys Maier
  • Answered

    SN74HC04: wrong PSpice model 0 Locked

    1033 views
    2 replies
    Latest over 4 years ago
    by Karan Kotadia
  • Answered

    SN54HC367: Equivalent to MM70C97J/883 0 Locked

    677 views
    4 replies
    Latest over 4 years ago
    by Danilo A.
  • Suggested Answer

    SN74LVC1G17: We want to check the SN74LVC1G17 output status when input is floating 0 Locked

    289 views
    2 replies
    Latest over 4 years ago
    by Dylan Hubbard
  • Answered

    SN74AVC8T245: Max Data Rates? 0 Locked

    334 views
    2 replies
    Latest over 4 years ago
    by Dylan Hubbard
  • Suggested Answer

    TXB0102: Can this device support SPI translation at 12MHz? 5V to 3.3V. 0 Locked

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

    SN74AVC4T245: SN74AVC4T245 0 Locked

    355 views
    2 replies
    Latest over 4 years ago
    by Prasanthi Busineni56
  • Answered

    SN74AVC4T245: SN74AVC4T245 0 Locked

    517 views
    5 replies
    Latest over 4 years ago
    by Prasanthi Busineni56
  • Suggested Answer

    SN74LVC1G34: Could you please suggest the redriver or buffer solution for the i2s? 0 Locked

    665 views
    2 replies
    Latest over 4 years ago
    by Emrys Maier
  • Not Answered

    SN74AUC125: About IBIS model 0 Locked

    297 views
    1 reply
    Latest over 4 years ago
    by Emrys Maier
  • Answered

    Point of contact for pricing and SEE/reliability data for QML-V/SEP logic products 0 Locked

    346 views
    3 replies
    Latest over 4 years ago
    by Wade Vonbergen
  • Answered

    SN74ACT7881_Suppply Voltage and IO Voltage 0 Locked

    302 views
    3 replies
    Latest over 4 years ago
    by Emrys Maier
  • Suggested Answer

    LSF0108: How to use 0 Locked

    354 views
    2 replies
    Latest over 4 years ago
    by Emrys Maier
  • Suggested Answer

    TXB0104: Is there have any other parts is simialr to TXB0104 but can support 130M datarate and SPI interface? 0 Locked

    404 views
    4 replies
    Latest over 4 years ago
    by Zhizhao Niu
  • Suggested Answer

    SN74AXC4T774: SPI e Level-Shifting 0 Locked

    554 views
    1 reply
    Latest over 4 years ago
    by Clemens Ladisch
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