PCA8550

4-bit multiplexed/1-bit latched 5-bit I2C EEPROM DIP switch


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Product description

The primary function of the 4-bit 2-to-1 I2C multiplexer is to select either a 4-bit input or data from a non-volatile register and drive this value onto the output pins. One additional non-multiplexed register output is also provided. The non-multiplexed output is latched to prevent output value changes during I2C writes to the non-volatile register. A write protect input is provided to enable/disable the ability to write to the non-volatile register. An ?override? input feature forces all outputs to logic 0.

Features

  • 4-bit 2-to-1 multiplexer, 1-bit latch DIP switch
  • 5-bit internal non-volatile register
  • Override input forces all outputs to logic 0
  • Internal non-volatile register write/readable via I2C-bus
  • Write-protect pin enables/disables I2C writes to register
  • 2.5 V multiplexed outputs
  • 3.3 V non-multiplexed output (latched)
  • 5 V tolerant inputs
  • Useful for ?jumperless? configuration of PC motherboards
  • Designed for use in Pentium Pro/Pentium IItm systems
All information on this product information page is subject to the subsequent disclaimers:
Go to the parametric search
Parametric search

Products / Packages

Type numberOrderable part numberOrdering code (12NC)Product statusPackagePackingMarkingECCN
PCA8550DPCA8550D,1129352 614 57112Volume productionSOT109-1
(SO16) 		TubeStandard Marking
PCA8550DPCA8550D,1189352 614 57118Volume productionSOT109-1
(SO16) 		Reel Pack, SMD, 13"Standard Marking
PCA8550D/GPCA8550D/G,1189352 760 99118DevelopmentSOT109-1
(SO16) 		Reel Pack, SMD, 13"Standard Marking
PCA8550DBPCA8550DB,1129352 614 58112Volume productionSOT338-1
(SSOP16) 		TubeStandard Marking
PCA8550DBPCA8550DB,1189352 614 58118Volume productionSOT338-1
(SSOP16) 		Reel Pack, SMD, 13"Standard Marking
PCA8550PW/DGPCA8550PW/DG,1189352 858 95118Volume productionSOT403-1
(TSSOP16) 		Reel Pack, SMD, 13"Standard Marking
PCA8550PWPCA8550PW,1129352 598 70112Volume productionSOT403-1
(TSSOP16) 		TubeStandard Marking
PCA8550PWPCA8550PW,1189352 598 70118Volume productionSOT403-1
(TSSOP16) 		Reel Pack, SMD, 13"Standard Marking

The variants in the table below are discontinued. See the table Discontinuation information at the bottom of this page for more information.

Type numberOrderable part numberOrdering code (12NC)Product statusPackagePackingMarkingECCN
PCA8550PW/GPCA8550PW/G,1189352 815 46118Withdrawn
Replacement product		SOT403-1
(TSSOP16) 		Reel Pack, SMD, 13"Standard Marking

Discontinuation information

Type numberOrdering code (12NC)Last-time buy dateLast-time delivery dateReplacement productDN NoticeStatusComments
PCA8550PW/G93528154611831-Mar-1130-Jun-11PCA8550PWDN 66
  • Sole source product
  • Standard availability
Standard End of Life. Discontinued /G version only.

Parametrics of this product

Type numberPackage# of Outputs/Latched Outputs/Internal EEPROM RegistersOperating voltage(VDC)I²C-bus(kHz)Operating
temp.(Cel)		# of Addresses
PCA8550DSOT109-1
(SO16)		4?1?13.0~3.64000~701
PCA8550DBSOT338-1
(SSOP16)		4?1?13.0~3.64000~701
PCA8550PWSOT403-1
(TSSOP16)		4?1?13.0~3.64000~701

Similar products

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHSLeadfree conversion dateRHFIFR (FIT)MTBF (hours)MSLMSL LF
PCA8550DPCA8550D,112PCA8550Dweek 2, 200511
PCA8550DPCA8550D,118PCA8550Dweek 2, 200511
PCA8550D/GPCA8550D/G,11811
PCA8550DBPCA8550DB,112PCA8550DBweek 13, 200511
PCA8550DBPCA8550DB,118PCA8550DBweek 13, 200511
PCA8550PW/DGPCA8550PW/DG,118PCA8550PW/DGAlways Pb-free11
PCA8550PWPCA8550PW,112PCA8550PWweek 12, 200511
PCA8550PWPCA8550PW,118PCA8550PWweek 12, 200511

The variants in the table below are discontinued. See the table Discontinuation information at the bottom of this page for more information.

Type numberOrderable part numberChemical contentRoHSLeadfree conversion dateRHFIFR (FIT)MTBF (hours)MSLMSL LF
PCA8550PW/GPCA8550PW/G,118Always Pb-free11
Quality and reliability disclaimer

Quality and reliability disclaimer

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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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Discontinuation information

Type numberOrdering code (12NC)Last-time buy dateLast-time delivery dateReplacement productDN NoticeStatusComments
PCA8550PW/G93528154611831-Mar-1130-Jun-11PCA8550PWDN 66
  • Sole source product
  • Standard availability
Standard End of Life. Discontinued /G version only.

Documentation for this product

TypeFormatTitleDate
Data sheetpdf4-bit multiplexed/1-bit latched 5-bit I2C EEPROM DIP switch (v.6.0)2003-06-27
Application notepdfLevel shifting techniques in I2C-bus design (v.1.0)2007-06-20
Application notepdfI2C manual (v.1.0)2003-03-27
Application notepdfPCA8550 4-bit multiplexed/1-bit latched 5-bit I2C EEPROM (v.1.0)1998-10-01
Application notepdfA guide to designing for ESD and EMC (v.2.0)2010-01-22
LeafletpdfI2C Selection Guide 2H 2011 (v.1.0)2011-09-29
User manualpdfI2C-bus specification and user manual (v.3.0)2007-06-26
User manualpdfI2C Demonstration Board 2005-1 Quick Start Guide (v.1.0)2006-06-13

Ordering & availability

Type numberOrdering code(12NC)Orderable part numberRegionDistributorIn stockOrder quantityInventory dateBuy onlineSamples
PCA8550D9352 614 57112PCA8550D,112NAAVNET ELECTRONICS MARKETING9102/7/2012Buy onlinenot available
   NAARROW ELECTRONICS3252/6/2012Buy online 
   JAPANCHIP ONE STOPno02/08/2012Buy online 
PCA8550D9352 614 57118PCA8550D,118NAAVNET ELECTRONICS MARKETING2,5002/7/2012Buy online 
   NADIGI-KEY CORPORATION6242/7/2012Buy online 
   NAMOUSER ELECTRONICS462/7/2012Buy online 
   NAMOUSER ELECTRONICS462/7/2012Buy online 
   JAPANCHIP ONE STOPyes02/08/2012Buy online 
PCA8550D/G9352 760 99118PCA8550D/G,118      not available
PCA8550DB9352 614 58112PCA8550DB,112JAPANCHIP ONE STOPno02/08/2012Buy onlinenot available
PCA8550DB9352 614 58118PCA8550DB,118JAPANCHIP ONE STOPno02/08/2012Buy onlinenot available
PCA8550PW/DG9352 858 95118PCA8550PW/DG,118NAAVNET ELECTRONICS MARKETING2,5002/7/2012Buy online 
   JAPANCHIP ONE STOPno02/08/2012Buy online 
PCA8550PW9352 598 70112PCA8550PW,112NAARROW ELECTRONICS7302/6/2012Buy onlinenot available
   JAPANCHIP ONE STOPno02/08/2012Buy online 
PCA8550PW9352 598 70118PCA8550PW,118ASFUTURE ELECTRONICS- ASIA12,5002/6/2012Buy online 
   NAFUTURE ELECTRONICS7,4002/6/2012Buy online 
   NAMOUSER ELECTRONICS2,1732/7/2012Buy online 
   NAMOUSER ELECTRONICS2,1732/7/2012Buy online 
   NADIGI-KEY CORPORATION3272/7/2012Buy online 
   NAAVNET ELECTRONICS MARKETING2002/7/2012Buy online 
   JAPANCHIP ONE STOPno02/08/2012Buy online 

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