TI E2E support forums
TI E2E support forums
  • User
  • Site
  • Search
  • User
  • E2E™ design support >
  • Forums
    • Amplifiers
    • API solutions
    • Audio
    • Clock & timing
    • Data converters
    • DLP® products
    • Interface
    • Isolation
    • Logic
    • Microcontrollers
    • Motor drivers
    • Power management
    • Processors
    • RF & microwave
    • Sensors
    • Site support
    • Switches & multiplexers
    • Tools
    • Wireless connectivity
    • Archived forums
    • Archived groups
  • Technical articles
  • TI training
    • Tech days
    • Online training
    • Live events
    • Power Supply Design Seminar
  • Getting started
  • 简体中文
  • More
  • Cancel


Search tips
Showing 9 results View by: Thread Post Sort by
    Answered
  • SN74HC21: SN74HC21PWR VCC 3.3V, what is the VIH and VIL value?

    Yu Ru Chen
    Yu Ru Chen
    Resolved
    Part Number: SN74HC21 I have one question about SN74HC21PWR VIH/VIL. If I VCC use 3.3V, what is the VIH and VIL value?
    • Resolved
    • over 2 years ago
    • Logic
    • Logic forum
  • SN74HC21: SN74HC21 ESD HBM/CD/MM data

    Hugo Wang
    Hugo Wang
    TI Thinks Resolved
    Part Number: SN74HC21 Hi Sir Could you help to share ESD HBM/CD/MM data? Since I can't find it in spec. Thanks for your great support.
    • over 5 years ago
    • Logic
    • Logic forum
  • SN74HC21: SN74HC21 Output LED issue

    Raja Ahmed Bilal
    Raja Ahmed Bilal
    TI Thinks Resolved
    Part Number: SN74HC21 Hi! I have small issue with this logic AND gate IC. I have a simple circuit where I check the output of Gate IC with LED. For Logic Level H at output LED is working fine. For Logic Level L led at output is not on. There are two…
    • over 7 years ago
    • Logic
    • Logic forum
  • SN74HC21: ESD grade of SN74HC21DR(HBM/CDM)

    Jerry Chen
    Jerry Chen
    TI Thinks Resolved
    Part Number: SN74HC21 Hi, The datasheet didn't have this information. Thanks.
    • over 6 years ago
    • Logic
    • Logic forum
  • DLP4500NIR: DMD is not projecting patterns with no error messages

    Mohamed Shehata
    Mohamed Shehata
    TI Thinks Resolved
    Part Number: DLP4500NIR Other Parts Discussed in Thread: DLPLCR4500EVM , DLPC350 , SN74HC21 Hi everyone, My DMD was working perfectly fine until suddenly it stopped working for some reason. The mirrors are in the parked position and it does not seem…
    • over 1 year ago
    • DLP®︎ products
    • DLP products forum
  • RE: AND Gate with Maximum number of inputs

    Karan Kotadia
    Karan Kotadia
    Hi, Thanks Clemens for the help. Besides the SN74HC21, you are going to need a second chip with an individual AND gate to AND those two signals together. I can recommend the SN74LVC1G08 which is our most popular part. Thanks! -Karan
    • over 6 years ago
    • Logic
    • Logic forum
  • RE: SN74LV21A: A smaller package, 12 channals Logic IC recommend

    ShreyasRao
    ShreyasRao
    Hi Elsa, What is the operating voltage? I would recommend using the SN74ALS133; 13 input positive NAND gate. The output can pass through another inverter like the SN74LVC1G04 to form AND gate. This will be a 2-chip solution. The overall size may…
    • over 6 years ago
    • Logic
    • Logic forum
  • solution on 4 channel positive-AND gate

    Ted Xu
    Ted Xu
    TI Thinks Resolved
    Other Parts Discussed in Thread: SN74HC21-Q1 Hi BU team Would you help promote which device can meet below requirements? 1. 4 channel inputs positive-AND gate 2. automotive catalog 3. the power supply can support 1.8V and 3.3V 4. temperature…
    • over 6 years ago
    • Logic
    • Logic forum
  • RE: SN74AHC1G09: Bigger AND gate (more inputs) than SN74AHC1G09

    Joe Stephan
    Joe Stephan
    HI Tim, Are you attemping to AND together 16 signals? Or looking for a package that has multiple AND gates in it to reduce the need for multiple single 2-input AND gates? We do not have a device that can do 16 signals, however we have the SN74AS808B…
    • over 8 years ago
    • Logic
    • Logic forum

Didn't find what you are looking for? Post a new question.

  • Ask a new question