Part Number: PCA9557 Hi,
I need the spice model(.CIR file) for PCA9557PWR The one which is available on ti.com is the encrypted model. I need the unencrypted one, as i want to create a symbol for this component and then use it in a test bench.
Part Number: PCA9557 Other Parts Discussed in Thread: TCA9538 Hello,
Customer is asking whether we have IBIS model about PCA9557, so would you like to help us check whether we have it?
Thanks,
Antony
Part Number: PCA9557 Hello expert, I have question for PCA9557's behavior regarding SMBus communication time out. My customer observed that PCA9557 hasn't happened time out even if adding more than 25ms wait between Reg addr and write data. I think…
Bobby, thanks for the reply,
I have some questions:
1. I assume that after the powerup measured in scopeshot above the IC was locked for I2C communication. Is this correct?
2. The IC was holding the SDA line low, thus preventing all communication on this…
Part Number: PCA9557 Hi dear supporting team,
The dataseet says If ramp conditions are outside timing allowances , POR condition can be missed, causing the device to lock up. If the device locks up, is there a possibility that the SDA signal will stay…
Part Number: PCA9557 Hi dear supporting team,
I heard there is a bug on PCA9557 , and it is revised on TCA9557, may I know what the bug is?
and are these two chips fully pin2pin compatible?
Customer found PCA9557 has very high requirement on POR, from…
Part Number: PCA9557 hi dear supporting team,
what's the max junction temp of PCA9557PWR? there is no information in d/s. and from calculation, the max power consumption at 3.6V is only 0.079mW, is this correct?
Part Number: PCA9557 Hi Team
My customer Zhuzhou is using PCA9557 and met some problem for reset function.
I've read the previous discussion for PCA9557 and there're 3 ways to reset the device:
1. keep VCC low longer than 100ms and Power on…
