The Datasheet Archive
Please enter a valid full or partial manufacturer part number with a minimum of 3 letters or numbers
Search
PCA9539DBQR
datasheet
by Texas Instruments
Description
PCA9539 - Remote 16-Bit I2C And SMBus, Low-Power I/O Expander With Interrupt Output, Reset
...
& Config. Registers 24-SSOP -40 to 85
more
Datasheet Type
Original
RoHS
Yes
Pb Free
Yes
Lifecycle
Active
ECCN
EAR99
HTS Code
8542.39.00.01
Schedule B
8542.39.00.00
Price & Stock
Powered by
Findchips
PCA9539DBQR
datasheet preview
Download Datasheet
PCA9539DBQR Frequently Asked Questions (FAQs)
What is the maximum frequency of the I2C bus that the PCA9539DBQR can support?
The PCA9539DBQR can support I2C bus frequencies up to 400 kHz.
How do I configure the PCA9539DBQR to operate in 8-bit or 16-bit mode?
The PCA9539DBQR can be configured to operate in 8-bit or 16-bit mode by setting the MODE pin high or low, respectively, during power-up.
What is the maximum current that the PCA9539DBQR can sink or source on each output pin?
The PCA9539DBQR can sink or source up to 25 mA of current on each output pin.
How do I reset the PCA9539DBQR?
The PCA9539DBQR can be reset by pulling the RESET pin low for at least 1 ms.
What is the purpose of the INT pin on the PCA9539DBQR?
The INT pin is an active-low interrupt output that is asserted when a change is detected on any of the input pins.