PCA9558PW: 8-bit I²C-bus and SMBus I/O port

The PCA9558 is a highly integrated, multi-function device that is composed of a 5-bit multiplexed/1-bit latched 6-bit I²C-bus/SMBus EEPROM DIP switch, an 8-bit I/O expander and a 2-kbit serial EEPROM with write protect. The PCA9558 integrates these commonly used components into a single chip to reduce component count and board space requirements and is useful in computer, server and telecom/networking applications.

The PCA9558 has one address pin, allowing up to two devices to be placed on the same I²C-bus or SMBus.

PCA9558PW: Product Block Diagram
Outline 3d SOT361-1
Data Sheets (1)
Name/DescriptionModified Date
8-bit I2C-bus and SMBus I/O port with 5-bit multiplexed/1-bit latched 6-bit I2C-bus EEPROM DIP switch and 2-kbit... (REV 5.0) PDF (266.0 kB) PCA955825 Jun 2012
Application Notes (5)
Name/DescriptionModified Date
PCA9500/PCA9501 provides simple card maintenance and control using I²C-bus (REV 1.0) PDF (90.0 kB) AN25623 Mar 2009
Level shifting techniques in I2C-bus design (REV 1.0) PDF (52.0 kB) AN1044120 Jun 2007
I2C/SMBus general purpose I/O expanders (REV 2.0) PDF (294.0 kB) AN46920 Jan 2005
I2C manual (REV 1.0) PDF (4.2 MB) AN1021627 Mar 2003
PCA8550 4-bit multiplexed/1-bit latched 5-bit I2C EEPROM (REV 1.0) PDF (60.0 kB) AN250_101 Oct 1998
Users Guides (4)
Name/DescriptionModified Date
I2C-bus specification and user manual (REV 6.0) PDF (1.4 MB) UM1020428 Apr 2014
I2C-bus specification and user manual (REV 5.0) PDF (1.6 MB) UM10204_JA03 Apr 2013
PCA9698 demonstration board OM6281 (REV 1.0) PDF (558.0 kB) UM1026726 Sep 2008
I2C Demonstration Board 2005-1 Quick Start Guide (REV 1.0) PDF (261.0 kB) UM1020613 Jun 2006
Brochures (2)
Name/DescriptionModified Date
NXP® I2C-bus solutions 2014: Smart, simple solutions for the 12 most common design concerns (REV 1.0) PDF (3.5 MB) 7501754001 Aug 2014
Create smarter, more efficient white goods; An industry-leading portfolio of cost-effective, power-saving solutions for... (REV 1.0) PDF (1.1 MB) 7501654301 Jun 2008
Package Information (1)
Name/DescriptionModified Date
plastic thin shrink small outline package; 28 leads; body width 4.4 mm (REV 1.0) PDF (375.0 kB) SOT361-108 Feb 2016
Packing (1)
Name/DescriptionModified Date
TSSOP28; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... (REV 3.0) PDF (227.0 kB) SOT361-1_11816 Apr 2013
Reports or Presentations (1)
Name/DescriptionModified Date
design_con_2003_tecforum_i2c_b_1 (REV 0.1) PDF (4.2 MB) DESIGN_CON_2003_TECFORUM_I2C_B_127 Jan 2003
Supporting Information (1)
Name/DescriptionModified Date
Footprint for wave soldering (REV 1.0) PDF (16.0 kB) SSOP-TSSOP-VSO-WAVE08 Oct 2009
IBIS Model
Ordering Information
ProductStatusNo of bitsVDD [min] (V)VDD [max] (V)Over volt tolerantNo of suppliesStandby current [typ] (µA)Max Sink Current per bit (mA)Max Sink Current, per package (mA)Source Current per bit (mA)Interrupt output pinReset input pinOutput modeInput mode: invert optionInternal pull-up resistor per bit (kOhm)I2C-bus (kHz)Footprint body and leads (mm2)Package namePackage versionOperating Temperature (Cel)No of AddressesRemark
PCA9558PWActive833.6Y1432Open drainInt I source40064.68TSSOP28SOT361-10~702EEPROM 2K byte, DIP switch
Package Information
Product IDPackage DescriptionOutline VersionReflow/Wave SolderingPackingProduct StatusPart NumberOrdering code(12NC)MarkingChemical ContentRoHS / Pb Free / RHFLeadFree Conversion DateEFRIFR(FIT)MTBF(hour)MSLMSL LF
PCA9558PWSOT361-1SSOP-TSSOP-VSO-WAVEReel 13" Q1/T1ActivePCA9558PW,118 (9352 694 33118)PCA9558DHPCA9558PWweek 12, 20050.02.05E811
Bulk PackActivePCA9558PW,112 (9352 694 33112)PCA9558DHPCA9558PWweek 12, 20050.02.05E811
8-bit I2C-bus and SMBus I/O port with 5-bit multiplexed/1-bit latched 6-bit I2C-bus EEPROM DIP switch and 2-kbit... pca9558pw
PCA9500/PCA9501 provides simple card maintenance and control using I²C-bus PCA9553
Level shifting techniques in I2C-bus design pca9685pw
I2C/SMBus general purpose I/O expanders pcf8575ts
I2C manual se98apw
PCA8550 4-bit multiplexed/1-bit latched 5-bit I2C EEPROM pca9558pw
I2C-bus specification and user manual pca9685pw
I2C-bus specification and user manual pca9685pw
PCA9698 demonstration board OM6281 PCA9553
I2C Demonstration Board 2005-1 Quick Start Guide pca9685pw
NXP® I2C-bus solutions 2014: Smart, simple solutions for the 12 most common design concerns pca9685pw
Create smarter, more efficient white goods; An industry-leading portfolio of cost-effective, power-saving solutions for... PMEG6010CE_AUTOMOTIVE
design_con_2003_tecforum_i2c_b_1 lm75a
PCA9558 IBIS model PCA9558PW
SOT361-1 LPC1114FDH28
SSOP-TSSOP-VSO-WAVE LPC1114FDH28
TSSOP28; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... pca9685pw
PCA9558PW
PCA9685