Answered

• SE555: Theta JC and Theta JB for "D" package SE555DR

  

  Chad Phelps

  Resolved

  Part Number: SE555 Tool/software: Hello, I'm interested in obtaining Theta JC and Theta JB for the "D" package SE555DR. The SE555 datasheet only provides ThetaJA for this package type.

  • Resolved

  • 3 months ago
  • Clock & timing
  • Clock & timing forum
Answered

• SE555: Same value charging capacitors, different packaging, different results!! Why?

  

  MShakibM

  Resolved

  Part Number: SE555 Tool/software: Hello Everyone, I'm trying to make a PWM signal for my MOSFET that is driving a heater. I'm using the "Pulse Width Modulation Control" topology from electronics tutorial. I designed the PCB and assembled…

  • Resolved

  • 3 months ago
  • Clock & timing
  • Clock & timing forum

• SE555: DR vs DRG4

  

  Marco Rojas

  TI Thinks Resolved

  Part Number: SE555 Hi team, I have a customer with the below question, let me know what you think and thanks in advance! "Can you please tell me the difference between the SE555DR and SE555DRG4? It’s not clear from the website. Thanks!"…

  • 6 months ago
  • Clock & timing
  • Clock & timing forum
Answered

• SE555-SP: Temperature drift of TRIG/THRES voltages

  

  Benjamin Green

  Resolved

  Part Number: SE555-SP The SE555-SP datasheet shows that the device has trigger and threshold voltage characterized at several supply voltages and temperatures, but there is no information on what is driving these variations. If possible, I would like…

  • Resolved

  • 7 months ago
  • Clock & timing
  • Clock & timing forum

• SE555: Help knowing if these TI parts are genuine

  

  Nuno Maio

  TI Thinks Resolved

  Part Number: SE555 Other Parts Discussed in Thread: LM358 , , TL072 I have been made aware that the place where I make my PCB's might be using non TI parts when TI parts, in specific, have been chosen and selected. I went through most of my TI opamps…

  • 8 months ago
  • Clock & timing
  • Clock & timing forum
Answered

• SE555: Start up Sequence Question

  

  GaryC

  Resolved

  Part Number: SE555 We have defect sample from production line. For the defect unit, the OUT will pull high first than VCC. The duration time is around 1.2s. But the good unit is VCC going first than OUT, and the duration is around 250mS. This application…

  • Resolved

  • over 1 year ago
  • Clock & timing
  • Clock & timing forum

• SE555: Triangular waveform problem

  

  Zoltan Karner

  TI Thinks Resolved

  Part Number: SE555 Other Parts Discussed in Thread: NE555 Hello All, My summer homework is a linearly proportional capacitance-to-frequency converter like a capacitance meter. The capacitance to be measured is 10-500pF, the value of the output frequency…

  • over 1 year ago
  • Clock & timing
  • Clock & timing forum

• SE555-SP: SE555-SP

  

  RON FIORELLO

  TI Thinks Resolved

  Part Number: SE555-SP Other Parts Discussed in Thread: SE555 , TLC555 Hi I need to know max freq of operation of the SE555-SP part and if there is a PSPICE model available? Thanks

  • over 1 year ago
  • Clock & timing
  • Clock & timing forum

• SE555: Does SE555 output driver circuit is current driver or voltage driver?

  

  Zhizhao Niu

  Part Number: SE555 Hi Team, Can you check for me, TI's SE555, is the OUTPUT driven is a voltage source or a current source? I read the description in the manual, and it can output a maximum current of 200mA. I understand it means: voltage source,…

  • over 1 year ago
  • Clock & timing
  • Clock & timing forum
Answered

• SE555: Output Pulse Duration over Temperatures

  

  Shinichi Yokota

  Resolved

  Part Number: SE555 Hello, Output pulse duration of SE555's mono-stable operation is estimated as t W = 1.1 × R × C. I'd like to ask how much the constant "1.1" in this equation can change over temperatures. I guess this equation…

  • Resolved

  • over 2 years ago
  • Clock & timing
  • Clock & timing forum

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