Part Number: PCA9554A Other Parts Discussed in Thread: PCA9554 ,
Hi Team,
Our customer previously used the PCA 9554A in his application. He incorrectly installed PCA9554 and now the system do not work According to our customer,
I used pca9554a in…
Part Number: PCA9554A Dear Expert ,
Good day ,
Could you provide some sample code of PCA9554A , our customer find that , the PCA9554A works fine when they write the data(address 70), but it is not work when read the data(address 71) , So they want…
Part Number: PCA9554A Other Parts Discussed in Thread: PCA9544A , TCA9544A , TCA9554A Hi,
Good Day. What is the junction to board thermal resistance of PCA9554A?
Please advise. Thank you very much.
Best Regards,
Ray Vincent
Part Number: PCA9554A Other Parts Discussed in Thread: PCA9554 Hi,
I am using the PCA9554ADG in 2 project and I have the same problem in both.
A few second after powering on the board, the PCA9554ADG increase the power supply current and fails. After…
Part Number: PCA9554A I am using the PCA9554ARGTR to drive several LEDs. Recently I have had this IC fail several times in the same manner. In each case either the SDA or SDL lines (or both) stopped functioning with an apparent open circuit occurring…
Part Number: PCA9554A Hello Guys,
Good day.
Our customer on their PCB design have left the address lines A0 to A2 open. The datasheet says it must be tied to Vcc or Gnd. What are the implications of leaving it open? Do they need to redo their design…
Part Number: PCA9554A Hello, Is it alright to drive the LED from the output to GND; i.e.; the recommendation in section 9.1.1.1 will not be followed? It says that it will minimize current consumption, but will there be grave effects? Thank you
Part Number: PCA9554A The datasheet shows the device operating Ambient temperature to be max upto 85°C, however there is no mention of maximum junction temperature. Looking to understand the amount of buffer available in thermal margin with respect to…
