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 you help…
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…
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 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…
Part Number: TCA9555 Hi,
In my schematic, I've one set of IO expanders on which digital input will be applied and I'm reading the interrupt output of those IO expanders and based on those interrupts, another corresponding set of IO expanders are driven…
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,
S…
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…
Part Number: TCA9555 Other Parts Discussed in Thread: TCAL6416 Hi,
I find TCA9555 Tj max. is 100C only on data sheet. Is this true? Normally Tj is 125C, why is this part 100C max.?
It seems our TJ less than competitior's.
Part Number: TCA9555 Hello,
Below is the schematic where IO Expander connected with Rotary switch.
IC is just placed bottom side of PCB board.
Initially, all rotary switches were on 0's position and temperature was 28 degree C on IC body(Measured…
