PCA9500

8-bit I2C-bus and SMBus I/O port with 2-kbit EEPROM


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Product description

The PCA9500 is an 8-bit I/O expander with an on-board 2-kbit EEPROM.

The I/O expander's eight quasi-bidirectional data pins can be independently assigned as inputs or outputs to monitor board level status or activate indicator devices such as LEDs. The system master writes to the I/O configuration bits in the same way as for the PCF8574. The data for each input or output is kept in the corresponding Input or Output register. The system master can read all registers.

The EEPROM can be used to store error codes or board manufacturing data for read-back by application software for diagnostic purposes and is included in the I/O expander package.

The PCA9500 has 3 address pins with internal pull-up resistors allowing up to 8 devices to share the common two-wire I2C software protocol serial data bus. The fixed GPIO I2C-bus address is the same as the PCF8574 and the fixed EEPROM I2C-bus address is the same as the PCF8582C-2, so the PCA9500 appears as two separate devices to the bus master.

The PCA9500 supports hot insertion to facilitate usage in removable cards on backplane systems.

The PCA9501 is an alternative to the functionally similar PCA9500 for systems where a higher number of devices are required to share the same I2C-bus or an interrupt output is required.

Features

  • 8 general purpose input/output expander/collector
  • Drop-in replacement for PCF8574 with integrated 2-kbit EEPROM
  • Internal 256 x 8 EEPROM
  • Self timed write cycle
  • 4 byte page write operation
  • I2C-bus and SMBus interface logic
  • Internal power-on reset
  • Noise filter on SCL/SDA inputs
  • 3 address pins allowing up to 8 devices on the I2C-bus/SMBus
  • No glitch on power-up
  • Supports hot insertion
  • Power-up with all channels configured as inputs
  • Low standby current
  • Operating power supply voltage range of 2.5 V to 3.6 V
  • 5 V tolerant inputs/outputs
  • 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
  • Packages offered: SO16, TSSOP16, HVQFN16

Applications

  • Board version tracking and configuration
  • Board health monitoring and status reporting
  • Multi-card systems in telecommunications, networking, and base station infrastructure equipment
  • Field recall and troubleshooting functions for installed boards
  • General-purpose integrated I/O with memory
  • Drop-in replacement for PCF8574 with integrated 2-kbit EEPROM
  • Bus master sees GPIO and EEPROM as two separate devices
  • Three hardware address pins allow up to 8 PCA9500s to be located in the same I2C-bus/SMBus
All information on this product information page is subject to the subsequent disclaimers:
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Show functional diagram

Block diagram: PCA9500BS, PCA9500D, PCA9500PW
Block diagram: PCA9500BS, PCA9500D, PCA9500PW

Products / Packages

Type numberOrderable part numberOrdering code (12NC)Product statusPackagePackingMarkingECCN
PCA9500BSPCA9500BS,1189352 738 12118Volume productionSOT629-1
(HVQFN16) 		Reel Pack, SMD, 13"Standard Marking
PCA9500DPCA9500D,1129352 715 33112Volume productionSOT162-1
(SO16) 		TubeStandard Marking
PCA9500DPCA9500D,1189352 715 33118Volume productionSOT162-1
(SO16) 		Reel Pack, SMD, 13"Standard Marking
PCA9500PWPCA9500PW,1129352 715 34112Volume productionSOT403-1
(TSSOP16) 		TubeStandard Marking
PCA9500PWPCA9500PW,1189352 715 34118Volume productionSOT403-1
(TSSOP16) 		Reel Pack, SMD, 13"Standard Marking

Parametrics of this product

Type numberPackage# of BitsMemory Size(kBits)Source Current per bit(mA)Weak Pull-Up Current Source Max Sink Current per bit(mA)Operating voltage(VDC)I²C-bus(kHz)Operating
temp.(Cel)		# of AddressesMax Sink Current
per package(mA)
PCA9500BSSOT629-1
(HVQFN16)		820.1yes252.5~3.6400-40~858100
PCA9500DSOT162-1
(SO16)		820.1yes252.5~3.6400-40~858100
PCA9500PWSOT403-1
(TSSOP16)		820.1yes252.5~3.6400-40~858100

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHSLeadfree conversion dateRHFIFR (FIT)MTBF (hours)MSLMSL LF
PCA9500BSPCA9500BS,118PCA9500BSAlways Pb-free11
PCA9500DPCA9500D,112PCA9500Dweek 45, 200411
PCA9500DPCA9500D,118PCA9500Dweek 45, 200411
PCA9500PWPCA9500PW,112PCA9500PWweek 48, 200411
PCA9500PWPCA9500PW,118PCA9500PWweek 48, 200411
Quality and reliability disclaimer

Quality and reliability disclaimer

Important Legal Notice on the product/generic quality information, No Warranty

NXP Semiconductors is providing this data for your convenience only. Please note however that NO WARRANTY, REPRESENTATION, GUARANTEE OR LEGALLY BINDING PRODUCT DESCRIPTION is provided by publishing this informational data, nor does NXP Semiconductors acknowledge or accept any liability related thereto. The documentation and data on NXP Semiconductors products can be found in the data sheets as officially published by NXP Semiconductors. For all purchase of products from NXP Semiconductors the NXP Semiconductors' General Terms and Conditions of Commercial Sale will apply.

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Documentation for this product

Ordering & availability

Type numberOrdering code(12NC)Orderable part numberRegionDistributorIn stockOrder quantityInventory dateBuy onlineSamples
PCA9500BS9352 738 12118PCA9500BS,118NADIGI-KEY CORPORATION14,1982/7/2012Buy online 
   NAARROW ELECTRONICS6,0002/6/2012Buy online 
   NAAVNET ELECTRONICS MARKETING1252/7/2012Buy online 
   JAPANCHIP ONE STOPno02/08/2012Buy online 
PCA9500D9352 715 33112PCA9500D,112NAARROW ELECTRONICS1,8112/6/2012Buy onlinenot available
   NADIGI-KEY CORPORATION252/7/2012Buy online 
   JAPANCHIP ONE STOPno02/08/2012Buy online 
PCA9500D9352 715 33118PCA9500D,118NAFUTURE ELECTRONICS9852/6/2012Buy online 
   NAMOUSER ELECTRONICS9232/7/2012Buy online 
   NAMOUSER ELECTRONICS9232/7/2012Buy online 
   JAPANCHIP ONE STOPno02/08/2012Buy online 
PCA9500PW9352 715 34112PCA9500PW,112NADIGI-KEY CORPORATION3,2512/7/2012Buy onlinenot available
   NAWPG AMERICAS INC.2,4002/7/2012Buy online 
   ASIAWPI2,400240002/07/2012Buy online 
   NAMOUSER ELECTRONICS1,3302/7/2012Buy online 
   NAMOUSER ELECTRONICS1,3302/7/2012Buy online 
   NAAVNET ELECTRONICS MARKETING1,2472/7/2012Buy online 
   NAFUTURE ELECTRONICS1932/6/2012Buy online 
   EUFARNELL1122/7/2012Buy online 
   ASELEMENT14 APAC1122/7/2012Buy online 
   JAPANCHIP ONE STOPno02/08/2012Buy online 
PCA9500PW9352 715 34118PCA9500PW,118ASAVNET EXPRESS ASIA7,5001/12/2012Buy online 
   NAARROW ELECTRONICS2,5002/6/2012Buy online 
   ASFUTURE ELECTRONICS- ASIA2,5002/6/2012Buy online 
   ASIAWPI2,500250002/07/2012Buy online 
   NAMOUSER ELECTRONICS2,4002/7/2012Buy online 
   NAMOUSER ELECTRONICS2,4002/7/2012Buy online 
   NAFUTURE ELECTRONICS2,0962/6/2012Buy online 
   NAAVNET ELECTRONICS MARKETING2002/7/2012Buy online 
   EUFARNELL1122/7/2012Buy online 
   ASELEMENT14 APAC1122/7/2012Buy online 
   ASIASAC - Taiwanyes250002/01/2012Buy online 
   JAPANCHIP ONE STOPyes02/08/2012Buy online 

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