Answered

• SN74HCS21: SN74HCS21DR- Inputs of the unused channel

  

  Sradha Ajay

  Resolved

  Part Number: SN74HCS21 Tool/software: Hi, We are using two channel AND gate in one of our circuits. Only one channel is used & the other one is completely not used. Is it okay to put all the inputs & output of the unused channel as no connection (NC…

  • Resolved

  • 16 days ago
  • Logic
  • Logic forum

• SN74HCS21: VT- confirm

  

  Alan Xia

  TI Thinks Resolved

  Part Number: SN74HCS21 Tool/software: Hi team， Pls help to confirm that VIL data at VCC=3.3V for sn74hcs21 ? Thank you

  • 1 month ago
  • Logic
  • Logic forum

• SN74HCS21: SN74HCS21's Thermal Derating

  

  R.Fukunaga

  TI Thinks Resolved

  Part Number: SN74HCS21 Hi all. Is there Thermal derating curve of logic IC? I would like to know Thermal derating of logic IC such as SN74HCS21. Best Regard, Ryusuke

  • over 1 year ago
  • Logic
  • Logic forum

• SN74HCS21-Q1: Pull up & RC filter at input line of AND gate

  

  Anoop kumar N

  Answer Suggested

  Part Number: SN74HCS21-Q1 Other Parts Discussed in Thread: UCC21710 Hello experts, I am using this 4 input AND logic for combining fault signal from my gate drives (UCC21710 - four numbers). The fault pin is open drain so we provided 4.7k pull up to …

  • 11 months ago
  • Logic
  • Logic forum

• SN74HCS21-Q1: Glitch in the output of the SN74HCS21-Q1 when power up

  

  Haiming Qu

  TI Thinks Resolved

  Part Number: SN74HCS21-Q1 Other Parts Discussed in Thread: SN74LVC1G125-Q1 , SN74LVC1G126-Q1 , SN74LVC1G99-Q1 , SN74HCS21 Hi Expert, I'm verifying the "AND" logic IC SN74HCS21-Q1 for our project. I found an abnormal phenomenon from this chipset. Showing…

  • over 1 year ago
  • Logic
  • Logic forum
Answered

• SN74HCS21-Q1: Series resistor value

  

  abhishek deshmukh

  Resolved

  Part Number: SN74HCS21-Q1 Hello, If Vcc = 5V, input pull up voltage is 5V, then how much series resistor value required at the input of SN74HCS21-Q1? Regards, Abhishek D.

  • Resolved

  • over 1 year ago
  • Logic
  • Logic forum

• SN74HCS21-Q1: Pspice Model Requirement for Simulation

  

  Gaurav Ingle

  TI Thinks Resolved

  Part Number: SN74HCS21-Q1 Hello TI Team, The Part MPN SN74HCS21-Q1 has IBIS Model in Design and Development. So, Can you provide me Pspice Model for the Same part number? Thanks, Gaurav Ingle.

  • over 2 years ago
  • Logic
  • Logic forum

• SN74HCS21: Is there any 6 input negative input and gate?

  

  Zhizhao Niu

  Part Number: SN74HCS21 Hi Team, My customer have a demand to monitor 6 negative input voltage, such as -8V,-7V,-6V... Each input may different, but it is negative. If anyone of the negative larger than 0V, the system will receive an alarm. If all the…

  • over 2 years ago
  • Logic
  • Logic forum
Answered

• SN74HCS21: Open drain or not

  

  Liu Yang

  Resolved

  Part Number: SN74HCS21 Hi Team, The datasheet just shows a buffer but does not specifically say if the device is open drain like other datasheets. Is this device open drain? The datasheet only shows diode clamps on input/output ports. Beat Regards, Tom…

  • Resolved

  • over 3 years ago
  • Logic
  • Logic forum

• SN74LVC1G07: output level question

  

  Jeff YANG

  TI Thinks Resolved

  Part Number: SN74LVC1G07 Other Parts Discussed in Thread: SN74HCS21 , SN74HCS08 , SN74LVC08A Hi I have a question about SN74LVC1G07. VCC(3V3_PEX) voltage level with impact output (Y) voltage level? If Tri_REG_PG use 3.3V is ok? thanks! Jeff

  • over 1 year ago
  • Logic
  • Logic forum

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