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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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  • Suggested Answer

    SN74HC4060: Clock cycles and the Input frequency 0 Locked

    632 views
    1 reply
    Latest over 4 years ago
    by Chad Crosby
  • Not Answered

    SN74ALVC245: +2V Voltage built up in the B1 line when Vcc and DIR lines is turned OFF 0 Locked

    705 views
    7 replies
    Latest over 4 years ago
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  • Suggested Answer

    TXB0106-Q1: TXB0106-Q1 0 Locked

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    SN74AXC4T774: Slow ramp on CS pin 0 Locked

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    SN74AUP3G06: Package Clarification 0 Locked

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    TXS0108E: Does TXS0108E support UART level conversion 0 Locked

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    by Chad Crosby
  • Answered

    SN74LVC1G3208-Q1: Temperature range of CLVC1G3208 0 Locked

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    1 reply
    Latest over 4 years ago
    by Emrys Maier
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    SN74AXC8T245: RGMII level translator 0 Locked

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  • Answered

    SN74LV1T34: ICs gone bad 0 Locked

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    by Emrys Maier
  • Suggested Answer

    SN74LVC1GX04: Application for 48MHz crystal oscillator 0 Locked

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    TXS0102: Question for TXS0102 VOL issue 0 Locked

    707 views
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    by Clemens Ladisch
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    SN74LVC1G34: Does the chip have open drain output? 0 Locked

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    SN74LVC2T45-Q1: Power dissipation question 0 Locked

    368 views
    1 reply
    Latest over 4 years ago
    by Clemens Ladisch
  • Suggested Answer

    TXB0102: Buffer with level shift 0 Locked

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    3 replies
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    by Clemens Ladisch
  • Answered

    SN74AVC2T244: open drain or push-pull 0 Locked

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    by Clemens Ladisch
  • Not Answered

    SN74HC595: SN74HC595D 0 Locked

    449 views
    3 replies
    Latest over 4 years ago
    by Chad Crosby
  • Answered

    SN74LVC1G125: PSpice model error: Values must be monotonic increasing 0 Locked

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

    LSF0102-Q1: LSF0102-Q1 0 Locked

    270 views
    1 reply
    Latest over 4 years ago
    by Chad Crosby
  • Suggested Answer

    TXS0102: The max frequency this device can support? 0 Locked

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

    SN74LVC1T45: SN74LVC1T45 and TXB0108, TXS0102 connection 0 Locked

    643 views
    5 replies
    Latest over 4 years ago
    by Clemens Ladisch
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