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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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  • Discussion

    SN74AVC2T245: OE pin pull high resister to VCCB Locked

    580 views
    1 reply
    Latest over 7 years ago
    by Clemens Ladisch
  • Not Answered

    TXB0104: Can TXB0104 support LVDS level conversion 0 Locked

    913 views
    2 replies
    Latest over 7 years ago
    by Dennis Wu
  • Suggested Answer

    SN74LVC1G123: UL Certificate DataSheet for SN74LVC1G123DCUR 0 Locked

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    3 replies
    Latest over 7 years ago
    by Emrys Maier
  • Suggested Answer

    SN74AHC594: IBIS model availability 0 Locked

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    1 reply
    Latest over 7 years ago
    by Emrys Maier
  • Suggested Answer

    LSF0108: SPI Quad mode support 0 Locked

    2211 views
    3 replies
    Latest over 7 years ago
    by Emrys Maier
  • Suggested Answer

    8 port bi-directional signal buffer 0 Locked

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    3 replies
    Latest over 7 years ago
    by Emrys Maier
  • Answered

    SN74HC373: ask the logic table of SN74HC373 0 Locked

    1145 views
    5 replies
    Latest over 7 years ago
    by Iven Xu
  • Suggested Answer

    SN74LV1T126: Converting a 5 V, 50 MHz clock down to 3.3 V. 0 Locked

    4754 views
    17 replies
    Latest over 7 years ago
    by Emrys Maier
  • Suggested Answer

    TXS0206: About TXS0206 output ringing 0 Locked

    2153 views
    9 replies
    Latest over 7 years ago
    by ShreyasRao
  • Suggested Answer

    TXB0304: The jitter performance when use TXB0304B as a clock buffer 0 Locked

    991 views
    4 replies
    Latest over 7 years ago
    by ShreyasRao
  • Answered

    TXB0108: Providing 3.3V voltage to both VccA and VccB 0 Locked

    1178 views
    5 replies
    Latest over 7 years ago
    by ShreyasRao
  • Suggested Answer

    SN74LV4046A: IBIS model availability 0 Locked

    520 views
    1 reply
    Latest over 7 years ago
    by Michael J Schultis
  • Not Answered

    TXS0108E: TXS0108E change 3.3v to 1.8v 0 Locked

    780 views
    1 reply
    Latest over 7 years ago
    by Clemens Ladisch
  • Answered

    CD4073B: CD4073BM Maximum Output Sink / Source Current. 0 Locked

    718 views
    1 reply
    Latest over 7 years ago
    by Clemens Ladisch
  • Answered

    TXB0108: power sequence between VccA and VccB 0 Locked

    695 views
    1 reply
    Latest over 7 years ago
    by Emrys Maier
  • Suggested Answer

    SN74HC151-Q1: 5V Input Capability under VCC=3.3V 0 Locked

    1390 views
    4 replies
    Latest over 7 years ago
    by Emrys Maier
  • Not Answered

    SN74AVC2T45: Differences betweeen doubling voltage or inverting Vcc 0 Locked

    863 views
    3 replies
    Latest over 7 years ago
    by Emrys Maier
  • Suggested Answer

    SN74LVC157A: Isolation of the SN74LVC157A 0 Locked

    530 views
    1 reply
    Latest over 7 years ago
    by Emrys Maier
  • Suggested Answer

    SN74LVC16T245: Power dissipation calculation of SN74LVC16T245 and SN74VMEH22501 0 Locked

    866 views
    3 replies
    Latest over 7 years ago
    by ShreyasRao
  • Suggested Answer

    TXS0104E: TXS0104EDR 0 Locked

    782 views
    2 replies
    Latest over 7 years ago
    by Ilan Hazi71
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