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PCA9554 Status: ACTIVE

Remote 8-Bit I2C and SMBus I/O Expander with Interrupt Output and Configuration Registers


      
         
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 PCA9554
No. of Outputs8  
Interrupt OutputYes  
Technology FamilyPCA  
fSCLK(Max)(MHz)400  
VCC(Min)(V)2.3  
VCC(Max)(V)5.5  
Pin/Package16SOIC, 16SSOP, 16TSSOP, 16TVSOP  
Operating Temp Range(Celsius)-40 to 85  
Max Frequency(kHz)400  
I2C Address0100 xxx  
# of I/Os8  
Vcc range(V)2.3 to 5.5  
Configuration RegistersYes  
5V Tolerant I/OYes  
Push–Pull I/O TypeYes  
 Samples
 Inventory

Customers Who Evaluated This Product Also Evaluated

  • PCA9534: Remote 8-Bit I2C and Low-Power I/O Expander with Interrupt Output and Configuration Registers
  • PCA9555: Remote 16-Bit I2C And SMBus I/O Expander With Interrupt Output And Configuration Registers
  • PCA9554A: Remote 8-Bit I2C and SMBus I/O Expander with Interrupt Output and Configuration Registers
  • PCA6107: Remote 8-Bit I2C and SMBus Low-Power I/O Expander With Interrupt Output, Reset, and Config Registers
  • SN74LVC1G08: Single 2-Input Positive-AND Gate
  • MAX3232: 3-V to 5.5-V Multichannel RS-232 Line Driver/Receiver

More Related Products

Product Information

Features

  • I2C to Parallel Port Expander
  • Open-Drain Active-Low Interrupt Output
  • Operating Power-Supply Voltage Range of 2.3 V to 5.5 V
  • 5-V Tolerant I/Os
  • 400-kHz Fast I2C Bus
  • Three Hardware Address Pins Allow up to Eight Devices on the I2C/SMBus
  • Input/Output Configuration Register
  • Polarity Inversion Register
  • Internal Power-On Reset
  • Power-Up With All Channels Configured as Inputs
  • No Glitch On Power Up
  • Latched Outputs With High-Current Drive Maximum Capability for Directly Driving LEDs
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)
    • 1000-V Charged-Device Model (C101)

DESCRIPTION/ORDERING INFORMATION

This 8-bit I/O expander for the two-line bidirectional bus (I2C) is designed for 2.3-V to 5.5-V VCC operation. It provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface [serial clock (SCL), serial data (SDA)].

The PCA9554 consists of one 8-bit Configuration (input or output selection), Input, Output, and Polarity Inversion (active high or active low) registers. At power on, the I/Os are configured as inputs with a weak pullup to VCC. However, 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 Input Port register can be inverted with the Polarity Inversion register. All registers can be read by the system master.

The system master can reset the PCA9554 in the event of a timeout or other improper operation by utilizing the power-on reset feature, which puts the registers in their default state and initializes the I2C/SMBus state machine.

The PCA9554 open-drain interrupt (INT) 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.

INT can be connected to the interrupt input of a microcontroller. By sending an interrupt signal on this line, the remote I/O can inform the microcontroller if there is incoming data on its ports without having to communicate via the I2C bus. Thus, the PCA9554 can remain a simple slave device.

The device's outputs (latched) have high-current drive capability for directly driving LEDs and low current consumption.

Three hardware pins (A0, A1, and A2) are used to program and vary the fixed I2C address and allow up to eight devices to share the same I2C bus or SMBus.

The PCA9554 is pin-to-pin and I2C address compatible with the PCF8574. However, software changes are required, due to the enhancements in the PCA9554 over the PCF8574.

The PCA9554 and PCA9554A are identical except for their fixed I2C address. This allows for up to 16 of these devices (eight of each) on the same I2C/SMBus.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierFootprintsSamples
PCA9554DBACTIVE-40 to 850.95 | 1kuSSOP (DB) | 16 View 80 | TUBE Download CAD Format for this FootprintPurchase Samples
PCA9554DBG4ACTIVE-40 to 850.95 | 1kuSSOP (DB) | 16 View 80 | TUBE Download CAD Format for this FootprintPurchase Samples
PCA9554DBRACTIVE-40 to 850.85 | 1kuSSOP (DB) | 16 View 2000 | LARGE T&R Download CAD Format for this Footprint
PCA9554DBRG4ACTIVE-40 to 850.85 | 1kuSSOP (DB) | 16 View 2000 | LARGE T&R Download CAD Format for this Footprint
PCA9554DGVRACTIVE-40 to 850.85 | 1kuTVSOP (DGV) | 16  2000 | LARGE T&R Download CAD Format for this Footprint
PCA9554DGVRG4ACTIVE-40 to 850.85 | 1kuTVSOP (DGV) | 16  2000 | LARGE T&R Download CAD Format for this Footprint
PCA9554DWACTIVE-40 to 850.95 | 1kuSOIC (DW) | 16 View 40 | TUBE Download CAD Format for this FootprintPurchase Samples
PCA9554DWG4ACTIVE-40 to 850.95 | 1kuSOIC (DW) | 16 View 40 | TUBE Download CAD Format for this FootprintPurchase Samples
PCA9554DWRACTIVE-40 to 850.85 | 1kuSOIC (DW) | 16 View 2000 | LARGE T&R Download CAD Format for this Footprint
PCA9554DWRG4ACTIVE-40 to 850.85 | 1kuSOIC (DW) | 16 View 2000 | LARGE T&R Download CAD Format for this Footprint
PCA9554PWACTIVE-40 to 850.95 | 1kuTSSOP (PW) | 16 View 90 | TUBE Download CAD Format for this FootprintPurchase Samples
PCA9554PWG4ACTIVE-40 to 850.95 | 1kuTSSOP (PW) | 16 View 90 | TUBE Download CAD Format for this FootprintPurchase Samples
PCA9554PWRACTIVE-40 to 850.85 | 1kuTSSOP (PW) | 16 View 2000 | LARGE T&R Download CAD Format for this Footprint
PCA9554PWRG4ACTIVE-40 to 850.85 | 1kuTSSOP (PW) | 16 View 2000 | LARGE T&R Download CAD Format for this Footprint

* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.

Inventory

Reported Distributor Inventory as of 11:12 AM GMT, 09 Feb 2010
RegionCompanyIn StockPurchase
TI Lead Time*: 15 WeeksPCA9554DB
AmericasArrow 646
Newark 43
Rochester Electronics >1k
AsiaFarnell Asia 30
WPI 80
EuropeAvnet-SILICA 320
WorldwideMouser Electronics 16
TI Lead Time*: 15 WeeksPCA9554DBG4
None Reported
View Distributors
TI Lead Time*: 15 WeeksPCA9554DBR
AmericasRochester Electronics >1k
EuropeAvnet-SILICA >1k
TI Lead Time*: 15 WeeksPCA9554DBRG4
None Reported
View Distributors
TI Lead Time*: 20 WeeksPCA9554DGVR
AmericasRochester Electronics >1k
TI Lead Time*: 20 WeeksPCA9554DGVRG4
None Reported
View Distributors
TI Lead Time*: 15 WeeksPCA9554DW
AmericasArrow >1k
Rochester Electronics >1k
AsiaWPI 80
WorldwideMouser Electronics 83
TI Lead Time*: 15 WeeksPCA9554DWG4
None Reported
View Distributors
TI Lead Time*: 15 WeeksPCA9554DWR
AmericasRochester Electronics >1k
AsiaWPI >1k
EuropeAvnet-SILICA >1k
TI Lead Time*: 15 WeeksPCA9554DWRG4
None Reported
View Distributors
TI Lead Time*: 18 WeeksPCA9554PW
AmericasAvnet 660
Newark 756
Rochester Electronics 251
AsiaFarnell Asia 775
EuropeAvnet-SILICA 330
Farnell 584
WorldwideMouser Electronics 433
TI Lead Time*: 18 WeeksPCA9554PWG4
None Reported
View Distributors
TI Lead Time*: 22 WeeksPCA9554PWR
AmericasRochester Electronics >1k
AsiaWPI 301
TI Lead Time*: 22 WeeksPCA9554PWRG4
None Reported
View Distributors
View all Distributors  

** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.

Quality & Lead (Pb)-Free Data

 Product ContentDPPM / MTBF / FIT Rate
DeviceEco Plan* Lead / Ball FinishMSL Rating / Peak ReflowDetailsDetails
PCA9554DB RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
PCA9554DBG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
PCA9554DBR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
PCA9554DBRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
PCA9554DGVR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
PCA9554DGVRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
PCA9554DW RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
PCA9554DWG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
PCA9554DWR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
PCA9554DWRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
PCA9554PW RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
PCA9554PWG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
PCA9554PWR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
PCA9554PWRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView

* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details.

If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.

Technical Documents

Most useful technical documents for PCA9554 Help

Datasheet

Application Notes

Selection Guides

Errata

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