PCF8575TS: Remote 16-bit I/O expander for I2C-bus

The PCF8575 is a silicon CMOS circuit. It provides general purpose remote I/O expansion for most microcontroller families via the two-line bidirectional bus (I²C-bus).

The device consists of a 16-bit quasi-bidirectional port and an I²C-bus interface. The PCF8575 has a low current consumption and includes latched outputs with high current drive capability for directly driving LEDs. It also possesses an interrupt line (INT) which can be connected to the interrupt logic of the 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 I²C-bus. This means that the PCF8575 is an I²C-bus slave transmitter/receiver.

Every data transmission from the PCF8575 must consist of an even number of bytes, the first byte will be referred to as P07 to P00 and the second byte as P17 to P10. The third will be referred to as P07 to P00 and so on.

PCF8575TS: Product Block Diagram
Outline 3d SOT340-1
Data Sheets (1)
Name/DescriptionModified Date
Remote 16-bit I/O expander for I2C-bus (REV 3.0) PDF (116.0 kB) PCF857507 Apr 1999
Application Notes (2)
Name/DescriptionModified Date
ESD and EMC sensitivity of IC (REV 1.0) PDF (745.0 kB) AN1085314 Mar 2013
I2C/SMBus general purpose I/O expanders (REV 2.0) PDF (294.0 kB) AN46920 Jan 2005
Users Guides (3)
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
I2C Demonstration Board 2005-1 Quick Start Guide (REV 1.0) PDF (261.0 kB) UM1020613 Jun 2006
Brochures (4)
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
Versatile, easy-to-use GPIO expanders; NXP® 4/8/16-bit I2C/SMBus GPIO expanders PCA9536/54/54A/55 (REV 1.0) PDF (319.0 kB) 7501653501 Aug 2008
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
Low-power GPIO expanders for portable applications; NXP® 8/16-bit I2C/SMBus GPIO expanders... (REV 1.0) PDF (239.0 kB) 7501602001 Jun 2007
Package Information (1)
Name/DescriptionModified Date
plastic shrink small outline package; 24 leads; body width 5.3 mm (REV 1.0) PDF (349.0 kB) SOT340-108 Feb 2016
Packing (1)
Name/DescriptionModified Date
SSOP24; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... (REV 1.0) PDF (230.0 kB) SOT340-1_11805 Apr 2013
Supporting Information (2)
Name/DescriptionModified Date
Footprint for reflow soldering (REV 1.0) PDF (16.0 kB) SSOP-TSSOP-VSO-REFLOW08 Oct 2009
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
PCF8575TS/1Active162.55.512.5202000.1YQuasiInt I source40066.36SSOP24SOT340-1-40~858
PCF8575TS/F1No Longer Manufactured162.55.512.5202000.1YQuasiInt I source40066.36SSOP24SOT340-1-40~858
PCF8575TS/S410/1No Longer Manufactured162.55.512.5202000.1YQuasiInt I source40066.36SSOP24SOT340-1-40~858
Package Information
Product IDPackage DescriptionOutline VersionReflow/Wave SolderingPackingProduct StatusPart NumberOrdering code(12NC)MarkingChemical ContentRoHS / Pb Free / RHFLeadFree Conversion DateMSLMSL LF
PCF8575TS/1SOT340-1SSOP-TSSOP-VSO-REFLOW SSOP-TSSOP-VSO-WAVE
SSOP-TSSOP-VSO-REFLOW SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1ActivePCF8575TS/1,118 (9352 765 52118)PCF8575TSPCF8575TS/1Always Pb-free11
Bulk PackActivePCF8575TS/1,112 (9352 765 52112)PCF8575TSPCF8575TS/1Always Pb-free11
Remote 16-bit I/O expander for I2C-bus pcf8575ts
ESD and EMC sensitivity of IC pcf8576d_automotive
I2C/SMBus general purpose I/O expanders pcf8575ts
I2C-bus specification and user manual pca9685pw
I2C-bus specification and user manual pca9685pw
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
Versatile, easy-to-use GPIO expanders; NXP® 4/8/16-bit I2C/SMBus GPIO expanders PCA9536/54/54A/55 pcf8570p
Create smarter, more efficient white goods; An industry-leading portfolio of cost-effective, power-saving solutions for... PMEG6010CE_AUTOMOTIVE
Low-power GPIO expanders for portable applications; NXP® 8/16-bit I2C/SMBus GPIO expanders... pcf8570p
PCF8575TS IBS Model PCF8575TS
plastic shrink small outline package; 24 leads; body width 5.3 mm tda9886ts
Footprint for reflow soldering 74HC_T_595_Q100
SSOP-TSSOP-VSO-WAVE LPC1114FDH28
SSOP24; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... tda9886ts
PCF8575TS
74LVC4245A