Part Number: PCF8574 Hello, i have a custom pcb with an arrange as follows
p2 is a PCF8574 pin.
when put in HIGH a voltage about 0,75V is read betwen R3 left side and GND. Not enough to activate MMBT2222.
can be this fixed removing R3A1?
any…
Part Number: PCF8574 Other Parts Discussed in Thread: TCAL6416 , TCAL9539 Tool/software: Hello I have a pcb design using a PCF8574 to generate a reset pulse for DRV8243 wake up.
Is it possible to get a 30 micro second with this io expander?
If not…
Part Number: PCF8574 Tool/software: Dear Sir/Madam,
I am facing GPIO output issue during our product development.
Function description
1.Press PA button, then SOM (controller) be infromed through I2C the PA button is pressed.
2.SOM through…
Part Number: PCF8574 Other Parts Discussed in Thread: MSP430FR2422
Tool/software:
**Subject:** PCF8574 I2C NACK Issue with MSP430FR2422
**Problem Statement:** I am interfacing the PCF8574 with MSP430FR2422 using a bit-banging I2C implementation…
Part Number: PCF8574 Tool/software: HI Team,
our cross ref database lists PCF8574 as "exact match" to NXP PCF8574TS/3,118.
can you please comment if customer should expect any differences in terms of package, pin-out, specs when switching from NXP…
Part Number: PCF8574 Tool/software: Hi All,
I have a question about the PCF8574 datasheet.
The Spike filter limit time has been changed in the Revision History.
Can you tell me why it was changed from 100nsec to 70nsec?
I think the change was…
Part Number: PCF8574 Other Parts Discussed in Thread: ULN2003A , , TCA9534 , TPL7407LA , TLC59108 , PCA9534 Hi team,
I'm facing a strange behavior with the device PCF8574RGTR. I'm using the PCF to drive an ULN2003A that drives a LED. However, when…
Part Number: PCF8574 Other Parts Discussed in Thread: , TM4C129ENCPDT , P82B715 I am writing to PCF8574 and PCF8574A devices using the TI driver under TIRTOS.
TM4C129ENCPDT processor, latest TIRTOS available for this processor is being used.
The…
Part Number: PCF8574 Tool/software: The datasheet for the PCF8574RGTR shows the thermal pad as pin 17 in the mechanical and soldermask diagrams but on the pinouts page does not mention if pin 17/exposed thermal pad should be connected to GND, VCC or NC…
