Part Number: TCA9555 Other Parts Discussed in Thread: TCA9617B Tool/software: Hi Team,
Note that TCA9555 can support up to 8pcs on a same BUS.
Could you please help to advise if there is any concern to use multiple pcs of TCA9555 on a same I2C BUS? For…
Part Number: TCA9555 Other Parts Discussed in Thread: TCAL9539 , TXU0304 , TXU0104 , LSF0002 , TXU0204 , TCA6408A , TCA6416A , Tool/software: Hi,
for special applications:
Is it possible for Vcc=5V, but I2C bus pull up for 3.3V alone?
Part Number: TCA9555 Other Parts Discussed in Thread: TCA9535 Dear Sir,
I used TCA9555 Io Expander IC. At power on condition all pin as a input work but voltage available in IO pin?
as per schematic Io port pull-up 100kohms though VCC.
Part Number: TCA9555 Hi Team,
My customer would control TCA9555PWR with I2C command below,
I2C address is 0x20 [A2:A0] connect to "low"
Customer send I2C data 0xFF to Port 0 and Port 1, but the output port is still stay at "low"
Would…
Part Number: TCA9555 hello
I have a question about TCA9555 parts. Can you tell me the amount of current consumed when the supply power is 3.3V or 5V?
Q1) When 3.3V is applied to Vcc, current consumption (Icc?) = ?
Q2) When 5.0V is applied to Vcc, current…
Part Number: TCA9555 Other Parts Discussed in Thread: PCA9555 , Hi team,
I have customer design in TCA9555 and PCA9555 at same design.
Here is their block.
And they found out if they turn the switch to low, point B will be 1.6V. And the issue only show…
Hi Kiran,
Kiranjit Kaur said: If I apply polarity inversion on the input bits of the IO expander,then what effect does it have on the value being read from the input register (0x00 and 0x01) port 0 and port1? In other words, where can the effect of polarity…
Part Number: TCA9555 Hi expert,
Customer has a production product used TCA9555 and TCA9548 and forgot to mount pull high/low resistor on the board of address pins.
So far didn't see any issues but wondering what would be the status of address pin if floating…
Part Number: TCA9555
Hi,
We have used TCA9555RGER in our design. We have observed the undershoot of I2C clock and data signals. The worst case maximum undershoot observed is -1.21V and the worst case undershoot duration observed is 3.1ns. Attached the…
Part Number: TCA9555 Hi Team,
My customer has a question.
The other devices that uses same I2C bus as TCA9555 is required for I2C clock stretching .
Clock stretching doesn't affect the operation of TCA9555?. TCA9555 work properly? Thanks,
Shoo
