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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

    TXB0304: Cascading TXB0304 devices for JTAG chain implementation 0 Locked

    213 views
    2 replies
    Latest over 3 years ago
    by Ralph Hoffmann
  • Answered

    SN74LVC16T245: Design Review 0 Locked

    332 views
    2 replies
    Latest over 3 years ago
    by Dylan Hubbard
  • Suggested Answer

    SN74LVC3G17: Ringing during switching at high frequency 0 Locked

    321 views
    3 replies
    Latest over 3 years ago
    by Albert Xu1
  • Suggested Answer

    SN74LVC1G17: CMOS Inputs slew rate 0 Locked

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

    CD40106B: Using RS232 transceiver or CD40106B logic ? 0 Locked

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

    LSF0102: IBIS Model Questions 0 Locked

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

    SN74LVC1G125: SN74LVC1G125 over current 0 Locked

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

    SN74LVC245A: Is there an octal or hex buffer with non-inverting output enable input? 0 Locked

    783 views
    4 replies
    Latest over 3 years ago
    by Clemens Ladisch
  • Answered

    SN74LVC1G18: Operating Temperature and Operating free-air temperature 0 Locked

    406 views
    3 replies
    Latest over 3 years ago
    by Jason Ciou
  • Suggested Answer

    SN74LVC1G57: PSpice simulation error 0 Locked

    380 views
    6 replies
    Latest over 3 years ago
    by JC Zhu
  • Suggested Answer

    SN74AC573: ESD Data 0 Locked

    166 views
    1 reply
    Latest over 3 years ago
    by Emrys Maier
  • Answered

    TXS0102: Can I use this Level Shifter in CANbus? Does it work properly in CANbus speed? 0 Locked

    1664 views
    3 replies
    Latest over 3 years ago
    by Clemens Ladisch
  • Answered

    SN74AVC2T244: VOH and VOL 0 Locked

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

    SN74HC125: VOH for 3.3VCC 0 Locked

    827 views
    8 replies
    Latest over 3 years ago
    by Emrys Maier
  • Answered

    TXU0104-Q1: B side supports TTL? 0 Locked

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

    SN74LV1T125: Simulation of transition time 0 Locked

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

    SN74LV74A: Open-drain output support 0 Locked

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

    SN74LVC4245A: Io Consult 0 Locked

    214 views
    1 reply
    Latest over 3 years ago
    by Albert Xu1
  • Not Answered

    SN74ALVC164245: SN74ALVC164245DGGR POWER UP 0 Locked

    237 views
    2 replies
    Latest over 3 years ago
    by FNU Mohammad Khaja Nadeemuddin
  • Suggested Answer

    SN74AVC16T245: Can SN74AVCH16T245 be used a replacement? 0 Locked

    257 views
    1 reply
    Latest over 3 years ago
    by Clemens Ladisch
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