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PCA9555DBG4 Datasheet(PDF) 2 Page - Texas Instruments

Part # PCA9555DBG4
Description  REMOTE 16-BIT I2C AND SMBus I/O EXPANDER WITH INTERRUPT OUTPUT AND CONFIGURATION REGISTERS
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

PCA9555DBG4 Datasheet(HTML) 2 Page - Texas Instruments

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DESCRIPTION/ORDERING INFORMATION (CONTINUED)
PCA9555
SCPS131E – AUGUST 2005 – REVISED MAY 2008 ......................................................................................................................................................... www.ti.com
The device outputs (latched) have high-current drive capability for directly driving LEDs.
Although pin-to-pin and I2C-address is compatible with the PCF8575, software changes are required due to the
enhancements.
The PCA9555 is identical to the PCA9535, except for the inclusion of the internal I/O pullup resistor, which pulls
the I/O to a default high when configured as an input and undriven.
Three hardware pins (A0, A1, and A2) are used to program and vary the fixed I2C address and allow up to eight
devices to share the same I2C bus or SMBus. The fixed I2C address of the PCA9555 is the same as the
PCF8575, PCF8575C, and PCF8574, allowing up to eight of these devices in any combination to share the same
I2C bus or SMBus.
ORDERING INFORMATION
TA
PACKAGE(1)(2)
ORDERABLE PART NUMBER
TOP-SIDE MARKING
Reel of 2000
PCA9555DBR
SSOP – DB
PD9555
Tube of 60
PCA9555DB
PCA9555DBQR
QSOP – DBQ
Reel of 2500
PCA9555
PCA9555DBQRG4
TVSOP – DGV
Reel of 2000
PCA9555DGVR
PD9555
Tube of 25
PCA9555DW
SOIC – DW
Reel of 2000
PCA9555DWR
PCA9555
–40
°C to 85°C
Reel of 250
PCA9555DWT
PCA9555PW
Tube of 60
PCA9555PWE4
TSSOP – PW
PCA9555PWR
PD9555
Reel of 2000
PCA9555PWRE4
Reel of 250
PCA9555PWT
QFN – RGE
Reel of 3000
PCA9555RGER
PD9555
(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.
2
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Copyright © 2005–2008, Texas Instruments Incorporated
Product Folder Link(s): PCA9555


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