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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

    LSF0101: Spice Modeling 0 Locked

    1147 views
    4 replies
    Latest over 5 years ago
    by ShreyasRao
  • Answered

    SN74AVC2T245: Power-Up sequence 0 Locked

    340 views
    3 replies
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    by ShreyasRao
  • Answered

    SN74LVC06A: thermal resistance 0 Locked

    556 views
    3 replies
    Latest over 5 years ago
    by Chad Crosby
  • Not Answered

    SN74LVC2G14: Output can't not work normally when connect the two channel as two stage inverter 0 Locked

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

    TI-57 80's Calculator IC TMC1501 Pinout 0 Locked

    847 views
    2 replies
    Latest over 5 years ago
    by Fred Doe
  • Suggested Answer

    ESD(Electrostatic discharge) information. 0 Locked

    690 views
    4 replies
    Latest over 5 years ago
    by Ed Walker
  • Answered

    TXB0104: Port A maximum output voltage 0 Locked

    603 views
    13 replies
    Latest over 5 years ago
    by Roy Chou1
  • Suggested Answer

    SN74AUC1G79: OUT high ISSUE when D is low 0 Locked

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    by Clemens Ladisch
  • Answered

    SN74LVC08A: 50MHz clock buffer for ADS8920B SCLK input 0 Locked

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    Latest over 5 years ago
    by Oba
  • Answered

    Investigate alternatives 0 Locked

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

    SN74LVC1G08: VCC=0V condition 0 Locked

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

    LSF0108: We want to check whether the A side and B side is high impedance condition when not give the VCCA or VCCB. 0 Locked

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

    SN74LV1T34: can the NC pin be connected to Vcc? 0 Locked

    363 views
    1 reply
    Latest over 5 years ago
    by Chad Crosby
  • Answered

    SN74LVC125A-Q1: SN74LVC125A-Q1 in series, is it possible? 0 Locked

    664 views
    6 replies
    Latest over 5 years ago
    by Damiano Balzani
  • Answered

    Fast Implementation of Regression Analysis on TI Microcontroller (TMS320F280040) 0 Locked

    587 views
    3 replies
    Latest over 5 years ago
    by Sira Rao80
  • Suggested Answer

    SN74LVC1G14: About Recommended land pattern 0 Locked

    420 views
    6 replies
    Latest over 5 years ago
    by Dylan Hubbard
  • Suggested Answer

    TXS0206-29: Help to check TXS0206-29 package dimension details 0 Locked

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

    SN74LVC1G175: Unencrypted SPICE model? 0 Locked

    461 views
    2 replies
    Latest over 5 years ago
    by Gregory Duperon
  • Suggested Answer

    SN74LVC1G08: DeltaT/DeltaV requirement 0 Locked

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

    SN74ALVCH32245: Voltage Spike on SN74AVC32T245 OE 0 Locked

    404 views
    1 reply
    Latest over 5 years ago
    by Clemens Ladisch
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