Part Number: PCA9554A Hi Team,
one of my customer has following question regards PCA9554A.
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In one of our new designs we are using the PCA9554ABRGVR as GPIO expander.
The IC always responds with a NACK.
We…
Part Number: TCA9554A Other Parts Discussed in Thread: PCA9554A , HI Sir
May I know TCA9554A could replace NXP's PCA9554A directly and doesn't need to modify the F/W
Is the difference about Vin range only ?
Thanks
Part Number: PCA9554A Other Parts Discussed in Thread: PCA9544A , , TCA9554A , TCA9544A Hi,
I'm designing with a PCA9544A and can't find a application diagram of bypass cap value. My VCC is 3.3V.
Could you recommend a cap value?
Regards,
James
Part Number: PCA9534A Other Parts Discussed in Thread: PCA9554A , TCA9534A , TCA9554A , TCA9534 Hello,
I am using 3x PCA9534A IO expanders and sometimes the device will hold the SDA line low at power up. All that is on the bus is a micro controller and 3x…
Part Number: LAUNCHXL-F28379D Other Parts Discussed in Thread: PCA9554A Hello,
I'm using LAUNCHXL_F28379D to control an IO expansion chip PCA9554A. I use GPIO104 and GPIO105 as SDA and SCL with 4.7kOhm pull-up resistors. However, I observed the following…
Hi Will,
We do not sell the QFN package of this device anymore. The QFN package for the PCA9544A is still on the web and you can find it here .
The two devices are exactly the same, the only difference is that the A version has a different address. It…
Hey Brian,
TI typically does not provide drivers (code) for our devices, we do provide support from an analog perspective and can help in terms of how to set up our device from a register stand point.
For drivers, I found on google two 'github' sources…
Hi jars121,
I don't think the vias will be an issue with your analog signals.
Regarding the I/O expander, take a look at this list: http://www.ti.com/interface/i2c/general-purpose-io-gpio/products.html#p1752=8;24&p106max=5;6&p886=VCC&p2192=Configuration…
Other Parts Discussed in Thread: PCA9554A , PCA9557 , PCA9534 , TCA6408A Dear support team, which of the following 8-bit I2C IO expanders would you recommend for a new design:
PCA9554A PCA9557 PCA9534 TCA6408A TCA7408
Regards Reto