Datasheet

PCA9539
SCPS130F –AUGUST 2005–REVISED JANUARY 2011 www.ti.com
DESCRIPTION/ORDERING INFORMATION (CONTINUED)
INT can be connected to the interrupt input of a microcontroller. By sending an interrupt signal on this line, the
remote I/O can inform the microcontroller if there is incoming data on its ports without having to communicate via
the I
2
C bus. Thus, the PCA9539 can remain a simple slave device.
The device outputs (latched) have high-current drive capability for directly driving LEDs. The device has low
current consumption.
The PCA9539 is identical to the PCA9555, except for the removal of the internal I/O pullup resistor, which greatly
reduces power consumption when the I/Os are held low, replacement of A2 with RESET, and a different address
range.
Two hardware pins (A0 and A1) are used to program and vary the fixed I
2
C address and allow up to four devices
to share the same I
2
C bus or SMBus.
ORDERING INFORMATION
T
A
PACKAGE
(1) (2)
ORDERABLE PART NUMBER TOP-SIDE MARKING
Reel of 2000 PCA9539DBR
SSOP – DB PCA9539
Tube of 60 PCA9539DB
QSOP – DBQ Reel of 2500 PCA9539DBQR PD9539
TVSOP – DGV Reel of 2000 PCA9539DGVR PD9539
Tube of 25 PCA9539DW
–40°C to 85°C SOIC – DW PCA9539
Reel of 2000 PCA9539DWR
Tube of 60 PCA9539PW
TSSOP – PW Reel of 2000 PCA9539PWR PD9539
Reel of 250 PCA9539PWT
QFN – RGE Reel of 3000 PCA9539RGER PD9539
(1) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
(2) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
website at www.ti.com.
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Product Folder Link(s): PCA9539