PCA9535; PCA9535C: 16-bit I2C-bus and SMBus, low power I/O port with interrupt
The PCA9535 and PCA9535C are 24-pin CMOS devices that provide 16 bits of General Purpose parallel Input/Output (GPIO) expansion for I²C-bus/SMBus applications and was developed to enhance the NXP Semiconductors family of I²C-bus I/O expanders. The improvements include higher drive capability, 5 V I/O tolerance, lower supply current, individual I/O configuration, and smaller packaging. I/O expanders provide a simple solution when additional I/O is needed for ACPI power switches, sensors, push buttons, LEDs, fans, etc.
The PCA9535 and PCA9535C consist of two 8-bit Configuration (Input or Output selection), Input, Output and Polarity Inversion (active HIGH or active LOW operation) registers. The system master can enable the I/Os as either inputs or outputs by writing to the I/O configuration bits. The data for each input or output is kept in the corresponding Input or Output register. The polarity of the read register can be inverted with the Polarity Inversion register. All registers can be read by the system master. Although pin-to-pin and I²C-bus address compatible with the PCF8575, software changes are required due to the enhancements and are discussed in Application Note AN469.
The PCA9535 is identical to the PCA9555 except for the removal of the internal I/O pull-up resistor which greatly reduces power consumption when the I/Os are held LOW.
The PCA9535C is identical to the PCA9535 except that all the I/O pins are high-impedance open-drain outputs.
The PCA9535 and PCA9535C open-drain interrupt output is activated when any input state differs from its corresponding Input Port register state and is used to indicate to the system master that an input state has changed. The power-on reset sets the registers to their default values and initializes the device state machine.
Three hardware pins (A0, A1, A2) vary the fixed I²C-bus address and allow up to eight devices to share the same I²C-bus/SMBus. The fixed I²C-bus address of the PCA9535 and PCA9535C are the same as the PCA9555 allowing up to eight of these devices in any combination to share the same I²C-bus/SMBus.
Outline 3d SOT137-1
Data Sheets (1)
| Name/Description | Modified Date |
|---|---|
| 16-bit I2C-bus and SMBus, low power I/O port with interrupt (REV 5.0) PDF (183.0 kB) PCA9535_PCA9535C | 15 Sep 2008 |
Application Notes (3)
| Name/Description | Modified Date |
|---|---|
| PCA9500/PCA9501 provides simple card maintenance and control using I²C-bus (REV 1.0) PDF (90.0 kB) AN256 | 23 Mar 2009 |
| Level shifting techniques in I2C-bus design (REV 1.0) PDF (52.0 kB) AN10441 | 20 Jun 2007 |
| I2C/SMBus general purpose I/O expanders (REV 2.0) PDF (294.0 kB) AN469 | 20 Jan 2005 |
Users Guides (4)
| Name/Description | Modified Date |
|---|---|
| I2C-bus specification and user manual (REV 6.0) PDF (1.4 MB) UM10204 | 28 Apr 2014 |
| I2C-bus specification and user manual (REV 5.0) PDF (1.6 MB) UM10204_JA | 03 Apr 2013 |
| PCA9698 demonstration board OM6281 (REV 1.0) PDF (558.0 kB) UM10267 | 26 Sep 2008 |
| I2C Demonstration Board 2005-1 Quick Start Guide (REV 1.0) PDF (261.0 kB) UM10206 | 13 Jun 2006 |
Brochures (3)
| Name/Description | Modified Date |
|---|---|
| NXP® I2C-bus solutions 2014: Smart, simple solutions for the 12 most common design concerns (REV 1.0) PDF (3.5 MB) 75017540 | 01 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) 75016543 | 01 Jun 2008 |
| Low-power GPIO expanders for portable applications; NXP® 8/16-bit I2C/SMBus GPIO expanders... (REV 1.0) PDF (239.0 kB) 75016020 | 01 Jun 2007 |
Package Information (4)
| Name/Description | Modified Date |
|---|---|
| plastic small outline package; 24 leads; body width 7.5 mm (REV 1.0) PDF (379.0 kB) SOT137-1 | 08 Feb 2016 |
| plastic thin shrink small outline package; 24 leads; body width 4.4 mm (REV 1.0) PDF (353.0 kB) SOT355-1 | 08 Feb 2016 |
| plastic thermal enhanced very thin quad flat package; no leads; 24 terminals; body 4 x 4 x 0.85 mm (REV 1.0) PDF (202.0 kB) SOT616-1 | 08 Feb 2016 |
| plastic thermal enhanced very very thin quad flat package; no leads; 24 terminals; body 4 x 4 x 0.75 mm (REV 1.0) PDF (213.0 kB) SOT994-1 | 08 Feb 2016 |
Packing (4)
| Name/Description | Modified Date |
|---|---|
| HWQFN24; Reel pack, SMD, 13" Q2/T3 standard product orientation Orderable part number ending ,128 or... (REV 1.1) PDF (190.0 kB) SOT994-1_128 | 15 Jul 2016 |
| HVQFN24; reel pack; standard product orientation; 12NC ending 118 (REV 1.0) PDF (196.0 kB) SOT616-1_118 | 16 Jan 2014 |
| TSSOP24; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... (REV 4.1) PDF (227.0 kB) SOT355-1_118 | 15 Apr 2013 |
| SO24; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering... (REV 4.0) PDF (235.0 kB) SOT137-1_118 | 12 Apr 2013 |
Supporting Information (2)
| Name/Description | Modified Date |
|---|---|
| Footprint for wave soldering (REV 1.0) PDF (8.0 kB) SO-SOJ-WAVE | 08 Oct 2009 |
| Footprint for wave soldering (REV 1.0) PDF (16.0 kB) SSOP-TSSOP-VSO-WAVE | 08 Oct 2009 |
Design Support
- Expert mode sample code for 16-bit Totem Pole (REV 1.0) TXT 16-BIT-TOTEM-POLE-READ-WRITE 12/10/2014
IBIS Model
- PCA9535 IBIS model (REV 1.1) ibs PCA9535_IBIS 9/2/2014
Ordering Information
| Product | Status |
|---|---|
| PCA9535D | Active |
| PCA9535CD | Active |
| PCA9535CHF | Active |
| PCA9535HF | Active |
| PCA9535PW | Active |
| PCA9535BS | Active |
| PCA9535CPW | Active |
Package Information
| Product ID | Package Description | Outline Version | Reflow/Wave Soldering | Packing | Product Status | Part NumberOrdering code(12NC) | Marking | Chemical Content | RoHS / Pb Free / RHF | LeadFree Conversion Date | EFR | IFR(FIT) | MTBF(hour) | MSL | MSL LF |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PCA9535BS |  | SOT616-1 | Reel 13" Q1/T1 | Active | PCA9535BS,118 (9352 739 44118) | 9535 | PCA9535BS |    | Always Pb-free | 0.0 | 2.0 | 5E8 | 1 | 1 | |
| PCA9535HF |  | SOT994-1 | Reel 13" Q1/T1 | Active | PCA9535HF,118 (9352 844 57118) | P35H | PCA9535HF | | Always Pb-free | 0.0 | 2.0 | 5E8 | 1 | 1 | |
| Reel 13" Q2/T3 | Active | PCA9535HFHP (9352 844 57128) | P35H | PCA9535HF | 0.0 | 2.0 | 5E8 | ||||||||
| PCA9535CPW |  | SOT355-1 | SSOP-TSSOP-VSO-WAVE | Reel 13" Q1/T1 | Active | PCA9535CPW,118 (9352 852 73118) | PCA9535C | PCA9535CPW | | Always Pb-free | 0.0 | 2.0 | 5E8 | 1 | 1 |
| Bulk Pack | Active | PCA9535CPW,112 (9352 852 73112) | PCA9535C | PCA9535CPW | | Always Pb-free | 0.0 | 2.0 | 5E8 | 1 | 1 | ||||
| PCA9535CD | | SOT137-1 | SO-SOJ-WAVE | Reel 13" Q1/T1 | Active | PCA9535CD,118 (9352 852 71118) | PCA9535CD | PCA9535CD |  | Always Pb-free | 0.0 | 2.0 | 5E8 | 1 | 1 |
| Bulk Pack | Active | PCA9535CD,112 (9352 852 71112) | PCA9535CD | PCA9535CD | | Always Pb-free | 0.0 | 2.0 | 5E8 | 1 | 1 | ||||
| PCA9535D | | SOT137-1 | SO-SOJ-WAVE | Reel 13" Q1/T1 | Active | PCA9535D,118 (9352 739 45118) | PCA9535D | PCA9535D | | week 11, 2005 | 0.0 | 2.0 | 5E8 | 1 | 1 |
| Bulk Pack | Active | PCA9535D,112 (9352 739 45112) | PCA9535D | PCA9535D | | week 11, 2005 | 0.0 | 2.0 | 5E8 | 1 | 1 | ||||
| PCA9535CHF | | SOT994-1 | Reel 13" Q1/T1 | Active | PCA9535CHF,118 (9352 852 72118) | P35C | PCA9535CHF | | Always Pb-free | 0.0 | 2.0 | 5E8 | 1 | 1 | |
| PCA9535PW | | SOT355-1 | SSOP-TSSOP-VSO-WAVE | Reel 13" Q1/T1 | Active | PCA9535PW,118 (9352 739 46118) | PCA9535PW | PCA9535PW | | week 47, 2004 | 0.0 | 2.0 | 5E8 | 1 | 1 |
| Bulk Pack | Active | PCA9535PW,112 (9352 739 46112) | PCA9535PW | PCA9535PW | | week 47, 2004 | 0.0 | 2.0 | 5E8 | 1 | 1 |
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