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PCA9535; PCA9535C
General description
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.
Features
- Operating power supply voltage range of 2.3 V to 5.5 V
- 5 V tolerant I/Os
- Polarity Inversion register
- Active LOW interrupt output
- Low standby current
- Noise filter on SCL/SDA inputs
- No glitch on power-up
- Internal power-on reset
- 16 I/O pins which default to 16 inputs
- 0 Hz to 400 kHz clock frequency
- ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per JESD22-A115, and 1000 V CDM per JESD22-C101
- Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA
- Offered in four different packages: SO24, TSSOP24, HVQFN24 and HWQFN24
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| PCA9535BS | PCA9535BS-T | 9352 739 44118 | Volume production | SOT616-1
(HVQFN24) | Reel Pack, SMD, 13" | Standard Marking | PCA9535BS
| Always Pb-free |
| PCA9535CD | PCA9535CD | 9352 852 71112 | Volume production | SOT137-1
(SO24) | Tube | Standard Marking | PCA9535CD
| |
| PCA9535CD | PCA9535CD-T | 9352 852 71118 | Volume production | SOT137-1
(SO24) | Reel Pack, SMD, 13" | Standard Marking | PCA9535CD
| |
| PCA9535CHF | PCA9535CHF-T | 9352 852 72118 | Volume production | SOT994-1
(HWQFN24) | Reel Pack, SMD, 13" | Standard Marking | PCA9535CHF
| |
| PCA9535CPW | PCA9535CPW | 9352 852 73112 | Volume production | SOT355-1
(TSSOP24) | Tube | Standard Marking | PCA9535CPW
| |
| PCA9535CPW | PCA9535CPW-T | 9352 852 73118 | Volume production | SOT355-1
(TSSOP24) | Reel Pack, SMD, 13" | Standard Marking | PCA9535CPW
| |
| PCA9535D | PCA9535D | 9352 739 45112 | Volume production | SOT137-1
(SO24) | Tube | Standard Marking | PCA9535D
| week 11, 2005 |
| PCA9535D | PCA9535D-T | 9352 739 45118 | Volume production | SOT137-1
(SO24) | Reel Pack, SMD, 13" | Standard Marking | PCA9535D
| week 11, 2005 |
| PCA9535HF | PCA9535HF-T | 9352 844 57118 | Volume production | SOT994-1
(HWQFN24) | Reel Pack, SMD, 13" | Standard Marking | PCA9535HF
| Always Pb-free |
| PCA9535PW | PCA9535PW | 9352 739 46112 | Volume production | SOT355-1
(TSSOP24) | Tube | Standard Marking | PCA9535PW
| week 47, 2004 |
| PCA9535PW | PCA9535PW-T | 9352 739 46118 | Volume production | SOT355-1
(TSSOP24) | Reel Pack, SMD, 13" | Standard Marking | PCA9535PW
| week 47, 2004 |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|
| PCA9535BS | 9352 739 44118 | 1.2000 | NA | DIGI-KEY CORPORATION | 12,000 | 6/29/2008 | Buy online | Order samples |
| NA | AVNET ELECTRONICS MARKETING | 6,000 | 7/4/2008 | Buy online | ||||
| NA | MOUSER ELECTRONICS | 4,829 | 7/6/2008 | Buy online | ||||
| NA | DIGI-KEY CORPORATION | 2,387 | 6/29/2008 | Buy online | ||||
| PCA9535CD | 9352 852 71112 | not available | ||||||
| PCA9535CD | 9352 852 71118 | Order samples | ||||||
| PCA9535CHF | 9352 852 72118 | not available | ||||||
| PCA9535CPW | 9352 852 73112 | not available | ||||||
| PCA9535CPW | 9352 852 73118 | Order samples | ||||||
| PCA9535D | 9352 739 45112 | 1.3700 | NA | DIGI-KEY CORPORATION | 4,742 | 6/29/2008 | Buy online | not available |
| PCA9535D | 9352 739 45118 | 1.3700 | NA | MOUSER ELECTRONICS | 600 | 7/6/2008 | Buy online | not available |
| PCA9535HF | 9352 844 57118 | Order samples | ||||||
| PCA9535PW | 9352 739 46112 | 1.2500 | NA | FUTURE ELECTRONICS | 49,958 | 7/4/2008 | Buy online | not available |
| NA | DIGI-KEY CORPORATION | 3,576 | 6/29/2008 | Buy online | ||||
| PCA9535PW | 9352 739 46118 | 1.2500 | NA | FUTURE ELECTRONICS | 9,000 | 7/4/2008 | Buy online | Order samples |
| NA | AVNET ELECTRONICS MARKETING | 7,500 | 7/4/2008 | Buy online | ||||
| NA | MOUSER ELECTRONICS | 1,644 | 7/6/2008 | Buy online |
Applications
Related applications
Digital media adapters
LCD display - discretes focus
PDA - discretes focus
Motherboard components
50-60 Hz CRT integrated DTV (TV210D)
Mid-range integrated DTV (TV810)
Intelligent washing machine
PCI analog/DVB-T stereo TV receiver
Nexperia UMA-enabled GSM/GPRS/EDGE VAS system solution (6100)
Cellular phone - MMS functionality
LCD TV - MMS functionality
Set-top box - MMS functionality
Technical documents
Application Notes
AN469_2;
I2C/SMBus general purpose I/O expanders (20-Jan-05)
Support Documents
75013239;
I 2 C Logic Selection Guide (2005-01-12)
75011212;
I2C 2002-1A Evaluation Board Kit (01-Mar-03)
75012744;
I2C Bus Solutions 2004 (2004-02-01)
philips_i2c_handbook;
I2C Handbook (2004-01-01)
UM10204_3;
I2C-bus specification and user manual (26-Jun-07)
philips_i2c_logic_overview;
Interface Products Business Line Specialty Logic Product Line I2C Logic Family Overview (2004-01-01)
75016020;
NXP 8/16-bit I2C/SMBus GPIO expanders PCA9534/35/35C for low-power applications (2007-06-01)
75015045;
World News 14.2 (2005-05-25)
Parametrics/similar products
| Type number | Package | INTERRUPT | Operating temp.(Cel) | # of Bits | Source Current per bit(mA) | Max. output current (A p-p) | I²C-bus(kHz) | Operating voltage(VDC) | Weak Pull-Up Current Source | Max Sink Current per bit(mA) | # of Addresses |
|---|---|---|---|---|---|---|---|---|---|---|---|
| PCA9535BS | SOT616-1
(HVQFN24) | 0-1 | -40~85 | 16 | 10 | 200 | 400 | 2.3~5.5 | no internal pull up resistor | 25 | 8 |
| PCA9535D | SOT137-1
(SO24) | 0-1 | -40~85 | 16 | 10 | 200 | 400 | 2.3~5.5 | no internal pull up resistor | 25 | 8 |
| PCA9535HF | SOT994-1
(HWQFN24) | 0-1 | -40~85 | 16 | 10 | 200 | 400 | 2.3~5.5 | no internal pull up resistor | 25 | 8 |
| PCA9535PW | SOT355-1
(TSSOP24) | 0-1 | -40~85 | 16 | 10 | 200 | 400 | 2.3~5.5 | no internal pull up resistor | 25 | 8 |
Similar products
PCA9535; PCA9535C links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.
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