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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] Can the input voltage (Vi) to my logic device be higher than the supply voltage (Vcc)?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Input Parameters >> Current FAQ This question is really about the input structure of a logic device. There are primarily two types of CMOS input structures - one with a positive clamping diode, and one without…
    • over 7 years ago
    • Logic
    • Logic forum
  • [FAQ] Where do I connect the thermal pad of the logic QFN devices?

    ShreyasRao
    ShreyasRao
    FAQ: Logic and Voltage Translation > Power and Thermals >> Current FAQ Some datasheets do not specify what should be done with the thermal pad, such as in the image below: The thermal pad is recommended to be soldered to the PCB and electrically…
    • over 7 years ago
    • Logic
    • Logic forum
  • [FAQ] What is the maximum capacitive load that a logic device can drive?

    Emrys Maier
    Emrys Maier
    Other Parts Discussed in Thread: SN74LVC2G34 FAQ: Logic and Voltage Translation > Output Parameters >> Current FAQ There are a few issues with trying to determine a maximum capacitive load for a standard CMOS logic device. First is propagation delay…
    • over 7 years ago
    • Logic
    • Logic forum
  • [FAQ] Why does a logic device's part number have an E4/G4 suffix?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Quality and Manufacturing >> Current FAQ In short, there will be no difference between a device labelled SN74xxG4 and SN74xx. Historically, G4 and E4 suffixes meant that the devices were rated to be "Green" or…
    • over 7 years ago
    • Logic
    • Logic forum
  • [FAQ] What is the difference between TXS TXB and LSF devices?

    ShreyasRao
    ShreyasRao
    FAQ: Logic and Voltage Translation > Voltage Translators >> Current FAQ
    • over 7 years ago
    • Logic
    • Logic forum
  • [FAQ] Is part number X pin to pin compatible with part number Y?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Quality and Manufacturing >> Current FAQ It's extremely common to need to know if one device can be directly replaced with another. With Standard Logic devices, this is generally an easy process. The part number…
    • over 7 years ago
    • Logic
    • Logic forum
  • [FAQ] What is the output transition rate for a logic device?

    Emrys Maier
    Emrys Maier
    Other Parts Discussed in Thread: SN74LVC1G08 FAQ: Logic and Voltage Translation > Output Parameters >> Current FAQ Very few logic devices specify an output transition rate, and those that do only specify it under very specific conditions. The best…
    • over 7 years ago
    • Logic
    • Logic forum
  • [FAQ] Why do the leadframes look strongly oxidized or corroded?

    Karan Kotadia
    Karan Kotadia
    FAQ: Logic and Voltage Translation > Quality and Manufacturing >> Current FAQ Texas instruments has decided to change from non-roughened leadframe to single-side roughened leadframe for some of its parts. For this reason these devices look as if they…
    • over 7 years ago
    • Logic
    • Logic forum
  • [FAQ] What is the TXS device internal resistor variation/ tolerance

    ShreyasRao
    ShreyasRao
    FAQ: Logic and Voltage Translation > Voltage Translators >> Current FAQ According to the design simulation, the variation of the 10K internal resistor of the TXS device can be between 6.5k to 15kohm across PVT.
    • over 7 years ago
    • Logic
    • Logic forum
  • [FAQ] What is the maximum junction temperature (TJMAX) for a device?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Power and Thermals >> Current FAQ The vast majority of logic devices do not list a maximum junction temperature ( T J(max) ) on the datasheet. For logic devices, T J(max) is equal to the maximum storage temperature…
    • Answered
    • over 7 years ago
    • Logic
    • Logic forum
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  • Answered

    SN74LVC2G07: Input level, high/low level has no back-off, at about 1.5V VOUT will appear output high/low error jitter 0 Locked

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

    TXB0108: QSPI 0 Locked

    318 views
    3 replies
    Latest over 4 years ago
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  • Suggested Answer

    SN74AUC126: Thermal Pads Connection 0 Locked

    348 views
    1 reply
    Latest over 4 years ago
    by Clemens Ladisch
  • Answered

    SN74LVC3G34: output signal decreases over time 0 Locked

    872 views
    4 replies
    Latest over 4 years ago
    by SE
  • Suggested Answer

    CD4047B: CD4047B based 12V DC to 192VAC inverter circuit, 0 Locked

    1926 views
    3 replies
    Latest over 4 years ago
    by Steven Mappus1
  • Answered

    LSF0108: LSF0108 schematic review 0 Locked

    1069 views
    2 replies
    Latest over 4 years ago
    by Reagan Li
  • Answered

    LSF0102: About voltage conditions where Vref A and A signals are different 0 Locked

    857 views
    4 replies
    Latest over 4 years ago
    by Emrys Maier
  • Suggested Answer

    SN74HC4060: Clock cycles and the Input frequency 0 Locked

    644 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

    725 views
    7 replies
    Latest over 4 years ago
    by Emrys Maier
  • Suggested Answer

    TXB0106-Q1: TXB0106-Q1 0 Locked

    469 views
    3 replies
    Latest over 4 years ago
    by Dylan Hubbard
  • Suggested Answer

    SN74AXC4T774: Slow ramp on CS pin 0 Locked

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

    SN74AUP3G06: Package Clarification 0 Locked

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

    TXS0108E: Does TXS0108E support UART level conversion 0 Locked

    662 views
    6 replies
    Latest over 4 years ago
    by Chad Crosby
  • Answered

    SN74LVC1G3208-Q1: Temperature range of CLVC1G3208 0 Locked

    373 views
    1 reply
    Latest over 4 years ago
    by Emrys Maier
  • Not Answered

    SN74AXC8T245: RGMII level translator 0 Locked

    392 views
    1 reply
    Latest over 4 years ago
    by Dylan Hubbard
  • Answered

    SN74LV1T34: ICs gone bad 0 Locked

    2172 views
    3 replies
    Latest over 4 years ago
    by Emrys Maier
  • Suggested Answer

    SN74LVC1GX04: Application for 48MHz crystal oscillator 0 Locked

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

    TXS0102: Question for TXS0102 VOL issue 0 Locked

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

    SN74LVC1G34: Does the chip have open drain output? 0 Locked

    285 views
    1 reply
    Latest over 4 years ago
    by Clemens Ladisch
  • Answered

    SN74LVC2T45-Q1: Power dissipation question 0 Locked

    377 views
    1 reply
    Latest over 4 years ago
    by Clemens Ladisch
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