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  • Forum Post: Using SN74LVC32244

    Jeffrey Bledsoe
    I have a design where the enable pin of this part is connected to ground (always enabled) and Vcc = 3.3V. The output is pulled up with a 5.6k resistor to 5V. I see 3.3V on the output pin, even with the pullup. Possible explanations: The 3.3 V power supply is sinking current through a body diode...
    on Oct 1, 2009

  • Forum Post: SN74LV815AN counter problem

    Oto Meran
    Hello, we are using counter SN74LV815AN with 25Mhz input as 32bit counter. when i read with frequency for example 4khz, and clear counter after each reading, everything is OK i receive numbers from couter: 0x184D; 0x184C; 0x184B; 0x184C etc. which match 25000000 : 4000 = 6250 = 0x186A ...
    on Feb 3, 2010

  • Forum Post: SN74LV8151 Input Voltage Tolerance

    Robert DeMott
    Could someone confirm whether the SN74LV8151 inputs are 5V tolerant when operating from a 3.3V supply? The recommended operating conditions section of the datasheet seems to imply that they are (max input voltage of 5.5V), but this isn't explicitly stated in the part description. Thanks.
    on May 11, 2011

  • Forum Post: Help with CD4081B output voltage

    Mike Ghen
    I'm trying to control a 12 V solenoid valve with an Arduino Duemilanove which outputs 5 V. I was going to use the CD4081B (AND Gate) to control the value but I'm not really sure if this will work. I plan on hooking one input to a 12 V powersupply and the other to one of the Arduino output pins...
    on May 15, 2011

  • Forum Post: Schmitt trigger output gone bad?

    Gary
    Hello, I am using a 74LVC14A inverting buffer for Vishay opto sensors, to convert 5V signal to 3.3V and feed into LPC2132 pins. The output of optosensors is fine, a good square wave but the output of schmitt trigger is distorted. Please see the scope output: The yellow trace is optosensor output...
    on Jul 27, 2011

  • Forum Post: Using a CBT Device as a 5V-to-3.3V Level Shifter or Voltage Translator

    Mike Combs
    The CBT logic family can interface a 5V part of a system with a 3.3V part of a system by adding a diode between the external Vcc and the output-enable terminals. Please reference application report "Flexible Voltage-Level Translation with CBT Family Devices": http://www.ti.com/lit/scda006...
    on May 14, 2009

  • Forum Post: Digital Signal Generator

    Kamal Joshi
    Hello All, I have a sensor (File Attached) that gives me a digital signal with high (12 V) and low (0 V). However, my Digital Input module (File Attached) can only go up to 5 V. Thus, I need to somehow convert the signal coming from the sensor into 5 V. Following is what I have right now I am...
    on Mar 1, 2012

  • Forum Post: IBIS Model for 74ACT16374

    Aparna Guvvala1
    Hi, I'm working for a processor board design.We need the IBIS model for 74ACT16374 (16-BIT D-TYPE EDGE-TRIGGERED FLIP-FLOPS WITH 3-STATE OUTPUTS) for SI analysis. Can you please provide us the same ASAP. Thanks in advance, Aparna.G Lead Engineer.
    on Aug 24, 2012

  • Forum Post: Problems with Binary-to-BCD converter (SN74185AN)

    Vale Bajo
    We are using the BCD-to-Binary and Binary-to-BCD converter (SN74185AN) so we have the next problem: When we want to convert a 6 bit Binary number to BCD using the connection in the page 3 of its datasheet we never get the expected results that are on its function table. No matter what is the input on...
    on Nov 15, 2012

  • Forum Post: IC IDENTIFICATION!?

    Charles Gutman
    Recently I was given this project to work on and soon afterwards of receiving the pcb boards, I immediately began the manufacturing process of adding all the necessary components to the boards. All was well until I got to the upper chips that BOTH had the numbers SCRATCHED OFF OF THEM!!! I sent "MY...
    on Nov 19, 2012

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