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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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  • Answered

    TXB0108: how to avoid latched condition 0 Locked

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

    SN74LVC1G17: do we have pin to pin part for MAX6818 debouncer 0 Locked

    271 views
    1 reply
    Latest over 4 years ago
    by Clemens Ladisch
  • Answered

    SN74LV1T126: About PACKAGING INFORMATION 0 Locked

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

    Request to provide the data sheet (P/N: SN74HC08ANSR) 0 Locked

    287 views
    1 reply
    Latest over 4 years ago
    by Clemens Ladisch
  • Not Answered

    TXB0104-Q1: Level shift function not work properly 0 Locked

    656 views
    1 reply
    Latest over 4 years ago
    by Clemens Ladisch
  • Answered

    SN74LVC1G17: ESD Rating 0 Locked

    416 views
    4 replies
    Latest over 4 years ago
    by Jeremy Larson
  • Suggested Answer

    SN74AVC8T245: Power Sequence 0 Locked

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

    SN74LVC3G07-Q1: Output pin ESD protection structure - Sneak path through the pull-up to the VCC while translating a 3V3 signal to 5V levels 0 Locked

    565 views
    1 reply
    Latest over 4 years ago
    by Clemens Ladisch
  • Answered

    LSF0204D: convert between 3.0V and 3.3V I/O. 0 Locked

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

    TXS0102: Multiple slave devices 0 Locked

    335 views
    6 replies
    Latest over 4 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74AUC125: what is the signal loss and output length can SN74AUC125 support? 0 Locked

    237 views
    2 replies
    Latest over 4 years ago
    by Ann_Lien
  • Suggested Answer

    solderbility isssue in IC SN74LVC1G17QDBVRQ1 0 Locked

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

    SN74AHCT541: automotive version 0 Locked

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

    TXB0108: Ripple voltage and IO data 0 Locked

    486 views
    8 replies
    Latest over 4 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LVTH244A: Replacement for SN74LV244A 0 Locked

    598 views
    3 replies
    Latest over 4 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74AVCH24T245: SN74AVCH24T245ZRGR and SN74AVCH24T245NMUR same performance? 0 Locked

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

    SN74HC14: Continuous current Vs Source/Sink current specification in practical Application for74HC14 0 Locked

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

    TXB0304: i have a query on TXB0304 Level Shifter 0 Locked

    303 views
    4 replies
    Latest over 4 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LVC1G04: About Input Frequency Range 0 Locked

    672 views
    5 replies
    Latest over 4 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LVC1G10: Input pin being held @ 2~2.2V after removing 5V input signal 0 Locked

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