Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsInterface ICsInterface IC - I/O extensions POR I²C, SMBus 400 kHz TSSOP 16

FEATURES

DB, DBQ, DGV, DW,

OR PW PACKAGE

(TOP VIEW)

GND

SDA

SCL

INT

RGV PACKAGE

(TOP VIEW)

6 8

10 P7

131415

SDA

INT

SCL

GND

RGT PACKAGE

(TOP VIEW)

6 8

131415

SDA

INT

SCL

GND

DESCRIPTION/ORDERINGINFORMATION

PCA9554A

www.ti.com

...........................................................................................................................................SCPS127D–SEPTEMBER2006–REVISEDAUGUST2008

REMOTE8-BITI

CANDSMBusI/OEXPANDER

WITHINTERRUPTOUTPUTANDCONFIGURATIONREGISTERS

•I

CtoParallelPortExpander•Power-UpWithAllChannelsConfiguredas

Inputs

•Open-DrainActive-LowInterruptOutput

•NoGlitchonPowerUp

•OperatingPower-SupplyVoltageRangeof

2.3Vto5.5V•LatchedOutputsWithHigh-CurrentDrive

MaximumCapabilityforDirectlyDrivingLEDs

•5-VTolerantI/Os

•Latch-UpPerformanceExceeds100mAPer

•400-kHzFastI

CBus

JESD78,ClassII

•ThreeHardwareAddressPinsAllowupto

•ESDProtectionExceedsJESD22

EightDevicesontheI

C/SMBus

–2000-VHuman-BodyModel(A114-A)

•Input/OutputConfigurationRegister

–200-VMachineModel(A115-A)

•PolarityInversionRegister

–1000-VCharged-DeviceModel(C101)

•InternalPower-OnReset

This8-bitI/Oexpanderforthetwo-linebidirectionalbus(I

C)isdesignedfor2.3-Vto5.5-VV

operation.It

providesgeneral-purposeremoteI/OexpansionformostmicrocontrollerfamiliesviatheI

Cinterface[serialclock

(SCL),serialdata(SDA)].

ThePCA9554Aconsistsofone8-bitConfiguration(inputoroutputselection),Input,Output,andPolarity

Inversion(activehighoractivelow)registers.Atpoweron,theI/Osareconfiguredasinputswithaweakpullup

toV

.However,thesystemmastercanenabletheI/OsaseitherinputsoroutputsbywritingtotheI/O

configurationbits.ThedataforeachinputoroutputiskeptinthecorrespondingInputorOutputregister.The

polarityoftheInputPortregistercanbeinvertedwiththePolarityInversionregister.Allregisterscanbereadby

thesystemmaster.

ThesystemmastercanresetthePCA9554Aintheeventofatimeoutorotherimproperoperationbyutilizingthe

power-onresetfeature,whichputstheregistersintheirdefaultstateandinitializestheI

C/SMBusstatemachine.

ThePCA9554Aopen-draininterrupt(INT)outputisactivatedwhenanyinputstatediffersfromitscorresponding

InputPortregisterstateandisusedtoindicatetothesystemmasterthataninputstatehaschanged.

Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexas

Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Not Recommended for New Designs

Summary of content (40 pages)

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Not Recommended for New Designs PCA9554A www.ti.com...........................................................................................................................................
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PCA9554A Not Recommended for New Designs SCPS127D – SEPTEMBER 2006 – REVISED AUGUST 2008........................................................................................................................................... www.ti.com DESCRIPTION/ORDERING INFORMATION (CONTINUED) INT can be connected to the interrupt input of a microcontroller.
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PCA9554A Not Recommended for New Designs www.ti.com........................................................................................................................................... SCPS127D – SEPTEMBER 2006 – REVISED AUGUST 2008 TERMINAL FUNCTIONS NO. QSOP (DBQ) SOIC (DW), SSOP (DB), TSSOP (PW), AND TVSOP (DGV) QFN (RGT AND RGV) NAME 1 15 A0 Address input. Connect directly to VCC or ground. 2 16 A1 Address input. Connect directly to VCC or ground. 3 1 A2 Address input.
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PCA9554A Not Recommended for New Designs SCPS127D – SEPTEMBER 2006 – REVISED AUGUST 2008........................................................................................................................................... www.ti.
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PCA9554A Not Recommended for New Designs www.ti.com........................................................................................................................................... SCPS127D – SEPTEMBER 2006 – REVISED AUGUST 2008 A Stop condition, a low-to-high transition on the SDA input/output while the SCL input is high, is sent by the master (see Figure 1). Any number of data bytes can be transferred from the transmitter to receiver between the Start and Stop conditions.
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PCA9554A Not Recommended for New Designs SCPS127D – SEPTEMBER 2006 – REVISED AUGUST 2008........................................................................................................................................... www.ti.com Data Output by Transmitter NACK Data Output by Receiver ACK SCL From Master 1 2 8 9 S Start Condition Clock Pulse for Acknowledgment Figure 3.
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PCA9554A Not Recommended for New Designs www.ti.com........................................................................................................................................... SCPS127D – SEPTEMBER 2006 – REVISED AUGUST 2008 Device Address Figure 4 shows the address byte for the PCA9554A. Slave Address 0 1 1 1 A2 A1 A0 R/W Hardware Selectable Fixed Figure 4.
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PCA9554A Not Recommended for New Designs SCPS127D – SEPTEMBER 2006 – REVISED AUGUST 2008........................................................................................................................................... www.ti.com Register Descriptions The Input Port register (register 0) reflects the incoming logic levels of the pins, regardless of whether the pin is defined as an input or an output by the Configuration register. It only acts on read operation.
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PCA9554A Not Recommended for New Designs www.ti.com........................................................................................................................................... SCPS127D – SEPTEMBER 2006 – REVISED AUGUST 2008 Interrupt Output (INT) An interrupt is generated by any rising or falling edge of the port inputs in the input mode. After time, tiv, the signal INT is valid.
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PCA9554A Not Recommended for New Designs SCPS127D – SEPTEMBER 2006 – REVISED AUGUST 2008........................................................................................................................................... www.ti.com Reads The bus master first must send the PCA9554A address with the least significant bit (LSB) set to a logic 0 (see Figure 4 for device address). The command byte is sent after the address and determines which register is accessed.
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PCA9554A Not Recommended for New Designs www.ti.com........................................................................................................................................... SCPS127D – SEPTEMBER 2006 – REVISED AUGUST 2008 Absolute Maximum Ratings (1) over operating free-air temperature range (unless otherwise noted) MIN MAX VCC Supply voltage range –0.5 6 V VI Input voltage range (2) –0.
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PCA9554A Not Recommended for New Designs SCPS127D – SEPTEMBER 2006 – REVISED AUGUST 2008........................................................................................................................................... www.ti.com Electrical Characteristics over operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VIK Input diode clamp voltage II = –18 mA VPOR Power-on reset voltage VI = VCC or GND, IO = 0 VCC MIN 2.3 V to 5.5 V –1.2 VPOR 2.
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PCA9554A Not Recommended for New Designs www.ti.com........................................................................................................................................... SCPS127D – SEPTEMBER 2006 – REVISED AUGUST 2008 I2C Interface Timing Requirements over operating free-air temperature range (unless otherwise noted) (see Figure 10) STANDARD MODE I2C BUS MIN MAX 100 FAST MODE I2C BUS UNIT MIN MAX 0 400 fscl I2C clock frequency 0 tsch I2C clock high time 4 0.
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PCA9554A Not Recommended for New Designs SCPS127D – SEPTEMBER 2006 – REVISED AUGUST 2008........................................................................................................................................... www.ti.com TYPICAL CHARACTERISTICS SUPPLY CURRENT vs TEMPERATURE QUIESCENT SUPPLY CURRENT vs TEMPERATURE 35 55 50 VCC = 5 V 30 ICC – Supply Current – nA ICC – Supply Current – µA 45 40 f SCL = 400 kHz I/Os unloaded 35 30 25 20 VCC = 3.3 V 15 10 VCC = 2.
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PCA9554A Not Recommended for New Designs www.ti.com........................................................................................................................................... SCPS127D – SEPTEMBER 2006 – REVISED AUGUST 2008 TYPICAL CHARACTERISTICS (continued) I/O OUTPUT LOW VOLTAGE vs TEMPERATURE I/O SINK CURRENT vs OUTPUT LOW VOLTAGE 30 300 250 VCC = 2.5 V VCC = 2.
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PCA9554A Not Recommended for New Designs SCPS127D – SEPTEMBER 2006 – REVISED AUGUST 2008........................................................................................................................................... www.ti.com TYPICAL CHARACTERISTICS (continued) I/O OUTPUT HIGH VOLTAGE vs TEMPERATURE I/O SOURCE CURRENT vs OUTPUT HIGH VOLTAGE 35 275 VCC = 2.5 V VCC = 2.
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PCA9554A Not Recommended for New Designs www.ti.com........................................................................................................................................... SCPS127D – SEPTEMBER 2006 – REVISED AUGUST 2008 TYPICAL CHARACTERISTICS (continued) OUTPUT HIGH VOLTAGE vs SUPPLY VOLTAGE 6 TA = 25°C VOH – Output High Voltage – V 5 4 IOH = –8 mA 3 IOH = –10 mA 2 1 0 2.3 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.
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PCA9554A Not Recommended for New Designs SCPS127D – SEPTEMBER 2006 – REVISED AUGUST 2008........................................................................................................................................... www.ti.
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PCA9554A Not Recommended for New Designs www.ti.com........................................................................................................................................... SCPS127D – SEPTEMBER 2006 – REVISED AUGUST 2008 PARAMETER MEASUREMENT INFORMATION (continued) VCC RL = 4.
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PCA9554A Not Recommended for New Designs SCPS127D – SEPTEMBER 2006 – REVISED AUGUST 2008........................................................................................................................................... www.ti.com PARAMETER MEASUREMENT INFORMATION (continued) 500 W Pn 2 × VCC DUT CL = 50 pF (see Note A) 500 W P-PORT LOAD CONFIGURATION 0.7 × VCC SCL P0 A P7 0.
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PCA9554A Not Recommended for New Designs www.ti.com........................................................................................................................................... SCPS127D – SEPTEMBER 2006 – REVISED AUGUST 2008 PARAMETER MEASUREMENT INFORMATION (continued) VCC RL = 1 kΩ DUT 500 W Pn SDA 2 × VCC DUT CL = 50 pF (see Note A) CL = 50 pF (see Note A) 500 W P-PORT LOAD CONFIGURATION SDA LOAD CONFIGURATION Start SCL ACK or Read Cycle SDA 0.
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PCA9554A Not Recommended for New Designs SCPS127D – SEPTEMBER 2006 – REVISED AUGUST 2008........................................................................................................................................... www.ti.com APPLICATION INFORMATION Figure 14 shows an application in which the PCA9554A can be used. VCC (5 V) 10 kW VCC Master Controller 10 kW 2 kW 10 kW VCC SDA SDA SCL SCL INT INT P0 Subsystem 1 (e.g.
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Not Recommended for New Designs PCA9554A www.ti.com........................................................................................................................................... SCPS127D – SEPTEMBER 2006 – REVISED AUGUST 2008 Minimizing ICC When I/Os Control LEDs When the I/Os are used to control LEDs, they are normally connected to VCC through a resistor as shown in Figure 14. Because the LED acts as a diode, when the LED is off, the I/O VIN is about 1.2 V less than VCC.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 6.6 2.5 12.0 16.0 Q1 PCA9554ADBR SSOP DB 16 2000 330.0 16.4 PCA9554ADGVR TVSOP DGV 16 2000 330.0 12.4 6.8 4.0 1.6 8.0 12.0 Q1 PCA9554ADWR SOIC DW 16 2000 330.0 16.4 10.75 10.7 2.7 12.0 16.
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PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) PCA9554ADBR SSOP DB 16 2000 367.0 367.0 38.0 PCA9554ADGVR TVSOP DGV 16 2000 367.0 367.0 35.0 PCA9554ADWR SOIC DW 16 2000 367.0 367.0 38.0 PCA9554APWR TSSOP PW 16 2000 367.0 367.0 35.0 PCA9554ARGTR QFN RGT 16 3000 367.0 367.0 35.0 PCA9554ARGVR VQFN RGV 16 2500 367.0 367.0 35.
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MECHANICAL DATA MSSO002E – JANUARY 1995 – REVISED DECEMBER 2001 DB (R-PDSO-G**) PLASTIC SMALL-OUTLINE 28 PINS SHOWN 0,38 0,22 0,65 28 0,15 M 15 0,25 0,09 8,20 7,40 5,60 5,00 Gage Plane 1 14 0,25 A 0°–ā8° 0,95 0,55 Seating Plane 2,00 MAX 0,10 0,05 MIN PINS ** 14 16 20 24 28 30 38 A MAX 6,50 6,50 7,50 8,50 10,50 10,50 12,90 A MIN 5,90 5,90 6,90 7,90 9,90 9,90 12,30 DIM 4040065 /E 12/01 NOTES: A. B. C. D. All linear dimensions are in millimeters.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.