• 

  Clemens Ladisch

  • 2 months ago
  • Interface
  • Interface forum

  RE: TCA9617A: SDAB low-level output voltage

  The TCA9509 has the current source on the A side. Without a current source, I²C buffers must use a voltage offset, which implies higher output voltages. Level shifters like the PCA9306 or TCA9406 do not buffer the signals.
• 

  Gregory Duperon

  • over 1 year ago
  • Interface
  • Interface forum

  TCA9509: A-side current source

  • Resolved

  Part Number: TCA9509 Is the A-side current source always active so long as VCCA is applied
• 

  Danny Bacic

  • 4 months ago
  • Interface
  • Interface forum

  RE: TCA9800: 1.8V-3.3V level shift, 1:3 MUX, bi-directional application

  Jerry, Clemens is correct! You already correctly mentioned that the reason B-sides of the TCA9617A can't face each other is due to voltage offset. For clarification, this offset exists so that the device doesn't incorrectly redrive the A side...
• 

  Mitchell Kary

  • over 1 year ago
  • Interface
  • Interface forum

  TCA9509: Question about I2C master on B side of TCA9509

  • Resolved

  Part Number: TCA9509 Hi, I am using TCA9509 as a 3.3V to 1.8V I2C translation buffer. The I2C
• 

  Mitchell Kary

  • over 1 year ago
  • Interface
  • Interface forum

  RE: TCA9509: Logic level compatibility with slave I2C devices causing problems with ACK translation
• 

  Michael Balourdas

  • over 1 year ago
  • Interface
  • Interface forum

  TCA9509: Can this be used as an I2C repeater if both supplies are 3.3V?

  TI Thinks Resolved

  Part Number: TCA9509 Hello, Can the TCA9509 be used as an I2C repeater if VCCA = VCCB = 3.3V? The data sheet states that both supplies can take 3.3V, so it seems like it should work as the two maximum voltages are the same: But further on it states...
• 

  BOBBY

  • 7 months ago
  • Interface
  • Interface forum

  RE: TCA9517A: Request 1.8V operation in IBIS model

  bryan zheng Hi Bobby, Really appreciated for your help. Since the date is not confirmed yet, could you help to find if there is any model could substitute TCA9517A. Then I can use it to do the simulation. [Bobby] For now, can you use TCA9509...
• 

  Clemens Ladisch

  • 8 months ago
  • Logic
  • Logic forum

  RE: TXS0102: TXS0102

  The I²C specification requires that all devices drive their outputs to at most 0.4 V (see V OL at the bottom). It requires a V IL of 1.5 V to allow for noise and voltage drop over the cable. (Note: HDMI uses 5 V, so 0.3 × 5 V = 1.5 V.) A...
• 

  BOBBY

  • 9 months ago
  • Interface
  • Interface forum

  RE: PCA9515A: tie both PCA9515 SCL0/SDA0 together is fine?

  Hey Bosun, I did send Annie a reply offline on the topic but just for online readers. The TCA9509 can operate at VccA=VccB however it is outside of the datasheet spec and we do not guarantee the electrical parameters can be met at that operating condition...
• 

  BOBBY

  • 8 months ago
  • Interface
  • Interface forum

  RE: TCA9617A: B-side to B-side adaptation stage

  Hey Etienne, Sorry for the delay in response. I took a look at the powerpoint you posted but I see a problem with the TCA9617A being connected to A side of TCA9509. B side of the 9617 has a static voltage offset and A side of the 9509 has an offset...

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