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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] Why does my device not switch at VIH or VIL?

    Karan Kotadia
    Karan Kotadia
    Other Parts Discussed in Thread: SN74LVC1G08 FAQ: Logic and Voltage Translation > Input Parameters >> Current FAQ What is V IH and V IL ? JEDEC - V IH min is the least positive (most negative) value of high-level input voltage for which operation…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] How do I size pull-up or pull-down resistors?

    Emrys Maier
    Emrys Maier
    Other Parts Discussed in Thread: SN74AUP1G34 FAQ: Logic and Voltage Translation > Input Parameters >> Current FAQ Pull-up and pull-down resistors are required in many logic systems to provide a valid logic state when a wire connected to a CMOS input…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] What is the maximum data rate (or operating frequency) for a logic gate or buffer?

    Emrys Maier
    Emrys Maier
    Other Parts Discussed in Thread: SN74LVC1G34 , SN74LVC1G79 FAQ: Logic and Voltage Translation > Timing Parameters >> Current FAQ ** NOTE ** This FAQ is in reference to push-pull output devices. Open-drain outputs will inherently have slower operating…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] What is the output voltage (VOH or VOL) when the output current is X or the supply voltage is Y?

    Karan Kotadia
    Karan Kotadia
    FAQ: Logic and Voltage Translation > Output Parameters >> Current FAQ There are circumstances where you might want to know a VOH or VOL Value that is not given. I will describe two cases: If you want VOH for a supply voltage that is not given (for…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] How do the LSF translators work?

    Emrys Maier
    Emrys Maier
    Other Parts Discussed in Thread: LSF0101 , LSF0002 , LSF0102 , LSF0204 , LSF0204D , LSF0108 , LSF0102-Q1 , LSF0204-Q1 , LSF0108-Q1 FAQ: Logic and Voltage Translation > Voltage Translators >> Current FAQ The LSF family of translators generates more questions…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] How do I terminate any unused channels of a logic device?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Input Parameters >> Current FAQ CMOS Inputs All CMOS inputs must be terminated at either Vcc or Ground. The inputs of a CMOS device are high-impedance. These terminations can be through a resistor (for example…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] Are there voltage level translation / level shifter device recommendations for the industry standard interfaces like GPIO, SPI, UART, I2C, MDIO, RGMII, I2S etc?

    ShreyasRao
    ShreyasRao
    FAQ: Logic and Voltage Translation > Voltage Translators >> Current FAQ Here are the voltage level translation device recommendations for various industry standard interfaces: Interface Recommended Device 3.6V Maximum 5.5V Maximum…
    • Answered
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] What is the default output of a latched device? (Flip-Flop, latch, register)

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Output Parameters >> Current FAQ Flip-flops, latches, and registers do not have a default state on power up. The output is in an 'unknown' state until data is clocked through. Because of this, SPICE simulation models…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] How does a slow or floating input affect a CMOS device?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Input Parameters >> Current FAQ There are two primary issues associated with slow and floating inputs. Not sure what a 'floating input' is? Please see our FAQ: What is a floating input or floating node? (1) Shoot…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] If the OE pin is asserted to maintain Hi-Z at the IO, will it disconnect the internal pull-up resistors in TXS devices?

    ShreyasRao
    ShreyasRao
    FAQ: Logic and Voltage Translation > Voltage Translators >> Current FAQ Yes, the internal pull-up resistors are disconnected once OE is asserted(to enable High impedance on the IO ports) Additionally, if the device supports Vcc isolation feature …
    • over 6 years ago
    • Logic
    • Logic forum
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  • Answered

    SN74AHCT1G08: SN74AHCT1G08DBVR 0 Locked

    283 views
    1 reply
    Latest over 1 year ago
    by Albert Xu1
  • Answered

    SN74LV4T08-Q1: Input Voltage Against VCC 0 Locked

    415 views
    3 replies
    Latest over 1 year ago
    by Albert Xu1
  • Suggested Answer

    SN74LVC1G17: SN74LVC1G17MDBVREP 0 Locked

    300 views
    1 reply
    Latest over 1 year ago
    by Albert Xu1
  • Answered

    SN74HC14: device magnetic resistance 0 Locked

    360 views
    3 replies
    Latest over 1 year ago
    by Albert Xu1
  • Suggested Answer

    ESD rating for these part number 0 Locked

    303 views
    1 reply
    Latest over 1 year ago
    by Albert Xu1
  • Suggested Answer

    SN74LV132A: Temperature range change 0 Locked

    292 views
    1 reply
    Latest over 1 year ago
    by Albert Xu1
  • Suggested Answer

    LSF0204-Q1: LSF0204-Q1 0 Locked

    457 views
    3 replies
    Latest over 1 year ago
    by Jack Guan
  • Answered

    SN74LVC1G32: SN74LVC1G32MDBVREP 0 Locked

    307 views
    1 reply
    Latest over 1 year ago
    by Clemens Ladisch
  • Suggested Answer

    SN74HC4020: Propagation Delay 0 Locked

    338 views
    3 replies
    Latest over 1 year ago
    by Ian Graham
  • Suggested Answer

    SN74LVC2G34: SN74LVC2G34DBVR version / PN differences 0 Locked

    355 views
    1 reply
    Latest over 1 year ago
    by Clemens Ladisch
  • Answered

    SN74LV123A: K-Vcc characteristic 0 Locked

    346 views
    1 reply
    Latest over 1 year ago
    by Clemens Ladisch
  • Answered

    SN74LVC1G07-EP: SN74LVC1G07-EP timming inquire 0 Locked

    336 views
    1 reply
    Latest over 1 year ago
    by Clemens Ladisch
  • Answered

    SN74LVC2G14: SN74LVC2G14DBVT 0 Locked

    310 views
    1 reply
    Latest over 1 year ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LV164A: Modified point of datasheet ver SCLS403K from SCLS403J. 0 Locked

    374 views
    6 replies
    Latest over 1 year ago
    by Albert Xu1
  • Suggested Answer

    TXU0304: What would be the expected jitter on a 24MHz signal going through the TXU0304? 0 Locked

    390 views
    3 replies
    Latest over 1 year ago
    by Michael Ikwuyum
  • Answered

    SN74LVC1G240: High-Z of Y when VCC falling (A and /OE low) 0 Locked

    353 views
    1 reply
    Latest over 1 year ago
    by Malcolm Lyn
  • Answered

    SN74LVC1G00: IBIS model for DRL package 0 Locked

    308 views
    1 reply
    Latest over 1 year ago
    by Malcolm Lyn
  • Suggested Answer

    SN74LVC1T45: Can i connect VCCA & VCCB with same voltage level? 0 Locked

    283 views
    2 replies
    Latest over 1 year ago
    by Joshua Salinas
  • Suggested Answer

    SN74LVC1G14: SN74LVC1G14DBV 0 Locked

    371 views
    1 reply
    Latest over 1 year ago
    by Clemens Ladisch
  • Answered

    SN74ACT244: SN74ACT244PWR 0 Locked

    389 views
    6 replies
    Latest over 1 year ago
    by Shritesh
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