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PCA9556

Selection guide

Datasheet

PCA9556
(Product Specification)
28-Mar-02, 13 pages, 97 kB

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PCA9556 - Octal SMBus and I2C registered interface

General description
Features
Products/packages
Quality/reliability/chemical content
Pricing/ordering/availability
Samples
Discontinued information
Applications
Block diagrams/pinning
Design support
Parametrics/similar products
Print/email
Disclaimers
Devices listed on this page should not be used for new designs! Recommended replacement: PCA9557_4All information hereunder is subject to the subsequent disclaimers

General description

The PCA9556 is a silicon CMOS circuit which provides parallel input/output expansion for SMBus applications. The PCA9556 consists of an 8-bit input port register, 8-bit output port register, and an SMBus interface. It has low current consumption and a high impedance open drain output pin, I/O0.

The SMBus system master can reset the PCA9556 in the event of a timeout by asserting a LOW on the reset input. The SMBus system master can also invert the PCA9556 inputs by writing to the active HIGH polarity inversion bits. Finally, the system master can enable the PCA9556?s I/Os as either inputs or outputs by writing to the configuration register.

The power-on reset puts the registers in their default state and initializes the SMBus state machine. The RESET pin causes the same reset/initialization to occur without depowering the part.

The PCA9557 8-bit I²C SMBus I/O port with reset is the higher performance pin-for-pin replacement for the PCA9556.

Features

  • SMBus compliance with fixed 3.3V voltage levels
  • Operating power supply voltage range of 3.0 V 0 5.5 V
  • Active high polarity inverter register
  • Each I/O is configurable as an input or output
  • Active low reset pin
  • Low leakage current on power-down
  • Noise filter on SCL/SDA inputs
  • No glitch on power-up
  • Internal power-on reset
  • 8 I/O pins which default to 8 inputs
  • High impedance open drain on I/O0
  • 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 JESDEC Standard JESD78 which exceeds 100 mA

Products/packages

Type numberOrderable part numberOrdering code (12NC)Product statusPackagePackingMarkingECCN
PCA9556PWPCA9556PW,1129352 628 99112Volume productionSOT403-1
(TSSOP16)
TubeStandard Marking
PCA9556PWPCA9556PW,1189352 628 99118Volume productionSOT403-1
(TSSOP16)
Reel Pack, SMD, 13"Standard Marking
PCA9556PW/GPCA9556PW/G,1189352 776 94118Volume productionSOT403-1
(TSSOP16)
Reel Pack, SMD, 13"Standard Marking

Quality/reliability/chemical content

Type numberOrderable part numberChemical contentRoHSLeadfree Conversion dateRHFIRF (FIT)MTBF (hours)MSL
PCA9556PWPCA9556PW,112PCA9556PW
week 48, 2004
PCA9556PWPCA9556PW,118PCA9556PW
week 48, 2004
PCA9556PW/GPCA9556PW/G,118PCA9556PW_G
week 13, 2005

Quality and reliability disclaimer

Pricing/ordering/availability

Type numberOrdering code(12NC)Orderable part numberIndicative price/unit($)RegionDistributorIn stockOrder quantityInventory dateBuy online
PCA9556PW9352 628 99112  PCA9556PW,112  1.4100NAMOUSER ELECTRONICS81 11/20/2009Buy online
    NAARROW ELECTRONICS1,122 11/19/2009Buy online
    NADIGI-KEY CORPORATION476 11/20/2009Buy online
    NAMOUSER ELECTRONICS81 11/20/2009Buy online
PCA9556PW9352 628 99118  PCA9556PW,118  1.4100NAARROW ELECTRONICS1,122 11/19/2009Buy online
    NAFUTURE ELECTRONICS2,500 11/19/2009Buy online
PCA9556PW/G9352 776 94118  PCA9556PW/G,118        

Block diagrams/pinning

Parametrics/similar products

Type numberPackageOperating
temp.(Cel)
# of BitsSource Current per bit(mA)Max. output current (A p-p)I²C-bus(kHz)Operating voltage(VDC)Max Sink Current per bit(mA)# of AddressesReset input pin
PCA9556PWSOT403-1
(TSSOP16)
-40~85810801003.0~5.5208yes
PCA9556PW/GSOT403-1
(TSSOP16)
-40~85810801003.0~5.5208yes


Similar products
PCA9556 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.