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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

    TXS02326A: SETTING UP THE SIM INTERFACE 0 Locked

    456 views
    3 replies
    Latest over 5 years ago
    by Lyudmila Voronina
  • Suggested Answer

    SN74LVC1T45: Alternative Level translator for SN74LVC1T45 0 Locked

    778 views
    10 replies
    Latest over 5 years ago
    by Gavi Siddu
  • Not Answered

    LMC567: ESD Ratings (HBM/CDM) 0 Locked

    277 views
    2 replies
    Latest over 5 years ago
    by Sam(MPAA) Zhang
  • Answered

    SN74LVC3G06: Theta JC and Theta JB Values 0 Locked

    520 views
    3 replies
    Latest over 5 years ago
    by Karan Kotadia
  • Answered

    SN74HC04A: Is there Hspice mode for SN74HC04A? 0 Locked

    417 views
    2 replies
    Latest over 5 years ago
    by Karan Kotadia
  • Answered

    SN74LVC1G14-EP: SN74LVC1G14-EP strange behavior 0 Locked

    921 views
    5 replies
    Latest over 5 years ago
    by Wade Vonbergen
  • Suggested Answer

    TXB0304: Frequency Range 0 Locked

    227 views
    1 reply
    Latest over 5 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LVC125A: current support 0 Locked

    666 views
    6 replies
    Latest over 5 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LVC2G125: SN74LVC2G125DCUR Vs 74LVC2G125DCURE4 0 Locked

    230 views
    1 reply
    Latest over 5 years ago
    by Clemens Ladisch
  • Answered

    SN74LVC16T245: SN74LVC16T245DGVR 0 Locked

    331 views
    4 replies
    Latest over 5 years ago
    by Vadim Utkin
  • Answered

    SN74LVC240A: About VIH and VIL thresholds of voltage. 0 Locked

    589 views
    1 reply
    Latest over 5 years ago
    by Clemens Ladisch
  • Answered

    SN74ABT16240A: how much is the Tj what SN74ABT16240ADGGR can withstand 0 Locked

    327 views
    2 replies
    Latest over 5 years ago
    by Masaharu Takahashi
  • Suggested Answer

    SN74LVT8996: BSDL file 0 Locked

    405 views
    1 reply
    Latest over 5 years ago
    by Wade Vonbergen
  • Suggested Answer

    LSF0108: Using LSF0108 to do the buffer in SDIO interface, is it ok? 0 Locked

    1341 views
    10 replies
    Latest over 5 years ago
    by Clemens Ladisch
  • Answered

    Galvanic Isolators 0 Locked

    2235 views
    26 replies
    Latest over 5 years ago
    by Manjunath G14
  • Suggested Answer

    SN7406: ESD and Surge test result 0 Locked

    700 views
    5 replies
    Latest over 5 years ago
    by Clemens Ladisch
  • Answered

    SN74LV4T125: Thermal Pad Connection for SN74LV4T125RGY 0 Locked

    487 views
    2 replies
    Latest over 5 years ago
    by Thomas Carpenter
  • Suggested Answer

    SN74LVC1G17: When Vcc=3.3V, does 5V input acceptable? 0 Locked

    325 views
    1 reply
    Latest over 5 years ago
    by Clemens Ladisch
  • Suggested Answer

    TXS0108E: VCCA connected to 2.5V ; VCCB connected to 3.3V; No load at A sides; B drove input at 3.3V why A has out put only 1.2V not 2.5V? Is it because no load? 0 Locked

    483 views
    3 replies
    Latest over 5 years ago
    by Clemens Ladisch
  • Answered

    SN74LVC2T45: Input transition rise or fall rate 0 Locked

    1382 views
    2 replies
    Latest over 5 years ago
    by Yusuke Mukuno
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