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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

    SN74AUP1G06: Feeding inverter VCC from logic to minimise quiescent drain 0 Locked

    582 views
    4 replies
    Latest over 5 years ago
    by Edward Matos
  • Answered

    TXS0108E: About Maximum value of Input and Output capacitor 0 Locked

    292 views
    2 replies
    Latest over 5 years ago
    by Hide
  • Not Answered

    LSF0102: LSF0102 is couldn't be assigned as output buffer 0 Locked

    395 views
    3 replies
    Latest over 5 years ago
    by Karan Kotadia
  • Suggested Answer

    SN74AUP1T97: SN74AUP1T97DRYR Junction temperature question 0 Locked

    416 views
    2 replies
    Latest over 5 years ago
    by Dylan Hubbard
  • Answered

    SN74LVTH244A: Maximum operating junction temperature for SN74LVTH244APWR? 0 Locked

    278 views
    1 reply
    Latest over 5 years ago
    by Karan Kotadia
  • Suggested Answer

    SN74HC03: SN74HC03 ESD Information 0 Locked

    224 views
    1 reply
    Latest over 5 years ago
    by Karan Kotadia
  • Suggested Answer

    SN74LVC126A: SN74LVC126A 0 Locked

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

    TXB0304: (Variant TXBN0304) falling edge voltage peaks 0 Locked

    997 views
    8 replies
    Latest over 5 years ago
    by Jade@lhs
  • Suggested Answer

    SN74AVC16245: Differences between SN74AVC8T245 0 Locked

    353 views
    1 reply
    Latest over 5 years ago
    by Karan Kotadia
  • Suggested Answer

    Alternative to NXP level translator 0 Locked

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

    SN74LVC1G11: Is SN74LVC1G11 open drain? 0 Locked

    354 views
    1 reply
    Latest over 5 years ago
    by Karan Kotadia
  • Not Answered

    SN74LVC1G373: LE pin overshoot 0 Locked

    350 views
    3 replies
    Latest over 5 years ago
    by Dylan Hubbard
  • Answered

    SN74LVC2G17: Why is there a difference between values for the positive-going input threshold voltage for 1g/2g/3g device types 0 Locked

    579 views
    1 reply
    Latest over 5 years ago
    by Karan Kotadia
  • Suggested Answer

    DGV package for part number SN74AVC16T245DGVR 0 Locked

    510 views
    2 replies
    Latest over 5 years ago
    by Dylan Hubbard
  • Suggested Answer

    TXS0108E: Power dissipation on TXS0108E 0 Locked

    214 views
    1 reply
    Latest over 5 years ago
    by Dylan Hubbard
  • Suggested Answer

    Compiler/SN74LVC8T245-Q1: Could TI = SN74LVC8T245QPWRQ1 and SN74LVC8T245-Q1 be the same? What are the differences? 0 Locked

    300 views
    1 reply
    Latest over 5 years ago
    by Dylan Hubbard
  • Answered

    SN74AVC16244: Buffer + Level Shift configuration 0 Locked

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

    Level Translator verification 0 Locked

    534 views
    2 replies
    Latest over 5 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74AVC16827: DOC, damping resistor and output drive capability 0 Locked

    901 views
    7 replies
    Latest over 5 years ago
    by Karan Kotadia
  • Suggested Answer

    TXS0206A: Difference between application specific and general level shifter in SD card use 0 Locked

    430 views
    2 replies
    Latest over 5 years ago
    by Dylan Hubbard
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