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)

131415

SDA

INT

SCL

GND

RGT PACKAGE

(TOP VIEW)

SDA

10 P7

131415

INT

SCL

GND

DESCRIPTION/ORDERINGINFORMATION

PCA9554

www.ti.com

........................................................................................................................................................SCPS128B–JULY2006–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)].

ThePCA9554consistsofone8-bitConfiguration(inputoroutputselection),Input,Output,andPolarityInversion

(activehighoractivelow)registers.Atpoweron,theI/OsareconfiguredasinputswithaweakpulluptoV

However,thesystemmastercanenabletheI/OsaseitherinputsoroutputsbywritingtotheI/Oconfiguration

bits.ThedataforeachinputoroutputiskeptinthecorrespondingInputorOutputregister.Thepolarityofthe

InputPortregistercanbeinvertedwiththePolarityInversionregister.Allregisterscanbereadbythesystem

master.

ThesystemmastercanresetthePCA9554intheeventofatimeoutorotherimproperoperationbyutilizingthe

power-onresetfeature,whichputstheregistersintheirdefaultstateandinitializestheI

C/SMBusstatemachine.

ThePCA9554open-draininterrupt(INT)outputisactivatedwhenanyinputstatediffersfromitscorresponding

InputPortregisterstateandisusedtoindicatetothesystemmasterthataninputstatehaschanged.

INTcanbeconnectedtotheinterruptinputofamicrocontroller.Bysendinganinterruptsignalonthisline,the

remoteI/Ocaninformthemicrocontrollerifthereisincomingdataonitsportswithouthavingtocommunicatevia

theI

Cbus.Thus,thePCA9554canremainasimpleslavedevice.

Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexas

Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

UNLESSOTHERWISENOTEDthisdocumentcontains

PRODUCTIONDATAinformationcurrentasofpublicationdate.

ProductsconformtospecificationsperthetermsofTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Not Recommended for New Designs

Summary of content (36 pages)

PAGE 1
Not Recommended for New Designs PCA9554 www.ti.com ........................................................................................................................................................
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PCA9554 Not Recommended for New Designs SCPS128B – JULY 2006 – REVISED AUGUST 2008 ........................................................................................................................................................ www.ti.com DESCRIPTION/ORDERING INFORMATION (CONTINUED) The device's outputs (latched) have high-current drive capability for directly driving LEDs and low current consumption.
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PCA9554 Not Recommended for New Designs www.ti.com ........................................................................................................................................................ SCPS128B – JULY 2006 – REVISED AUGUST 2008 TERMINAL FUNCTIONS NO. QSOP (DBQ) SOIC (DW), SSOP (DB), TSSOP (PW), AND TVSOP (DGV) QFN (RGT) AND QFN (RGV) NAME 1 15 A0 Address input. Connect directly to VCC or ground. 2 16 A1 Address input. Connect directly to VCC or ground.
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PCA9554 Not Recommended for New Designs SCPS128B – JULY 2006 – REVISED AUGUST 2008 ........................................................................................................................................................ www.ti.
PAGE 5
PCA9554 Not Recommended for New Designs www.ti.com ........................................................................................................................................................ SCPS128B – JULY 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 the receiver between the start and the stop conditions.
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PCA9554 Not Recommended for New Designs SCPS128B – JULY 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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PCA9554 Not Recommended for New Designs www.ti.com ........................................................................................................................................................ SCPS128B – JULY 2006 – REVISED AUGUST 2008 Device Address Figure 4 shows the address byte for the PCA9554. Slave Address 0 1 0 0 A2 A1 A0 R/W Hardware Selectable Fixed Figure 4.
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PCA9554 Not Recommended for New Designs SCPS128B – JULY 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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PCA9554 Not Recommended for New Designs www.ti.com ........................................................................................................................................................ SCPS128B – JULY 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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PCA9554 Not Recommended for New Designs SCPS128B – JULY 2006 – REVISED AUGUST 2008 ........................................................................................................................................................ www.ti.com Reads The bus master first must send the PCA9554 address with the least-significant bit 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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PCA9554 Not Recommended for New Designs www.ti.com ........................................................................................................................................................ SCPS128B – JULY 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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PCA9554 Not Recommended for New Designs SCPS128B – JULY 2006 – REVISED AUGUST 2008 ........................................................................................................................................................ www.ti.
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PCA9554 Not Recommended for New Designs www.ti.com ........................................................................................................................................................ SCPS128B – JULY 2006 – REVISED AUGUST 2008 I2C INTERFACE TIMING REQUIREMENTS over operating free-air temperature range (unless otherwise noted) (see Figure 10) STANDARD MODE I2C BUS FAST MODE I2C BUS MIN MAX 100 UNIT MIN MAX 0 400 fscl I2C clock frequency 0 tsch I2C clock high time 4 0.
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PCA9554 Not Recommended for New Designs SCPS128B – JULY 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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PCA9554 Not Recommended for New Designs www.ti.com ........................................................................................................................................................ SCPS128B – JULY 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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PCA9554 Not Recommended for New Designs SCPS128B – JULY 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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PCA9554 Not Recommended for New Designs www.ti.com ........................................................................................................................................................ SCPS128B – JULY 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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PCA9554 Not Recommended for New Designs SCPS128B – JULY 2006 – REVISED AUGUST 2008 ........................................................................................................................................................ www.ti.
PAGE 19
PCA9554 Not Recommended for New Designs www.ti.com ........................................................................................................................................................ SCPS128B – JULY 2006 – REVISED AUGUST 2008 PARAMETER MEASUREMENT INFORMATION (continued) VCC RL = 4.
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PCA9554 Not Recommended for New Designs SCPS128B – JULY 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.
PAGE 21
PCA9554 Not Recommended for New Designs www.ti.com ........................................................................................................................................................ SCPS128B – JULY 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) SDA LOAD CONFIGURATION 500 W P-PORT LOAD CONFIGURATION Start SCL ACK or Read Cycle SDA 0.
PAGE 22
PCA9554 Not Recommended for New Designs SCPS128B – JULY 2006 – REVISED AUGUST 2008 ........................................................................................................................................................ www.ti.com APPLICATION INFORMATION Figure 14 shows an application in which the PCA9554 can be used. VCC (5 V) 10 kW VCC Master Controller 10 kW 2 kW 10 kW 100 kW (y3) VCC SDA SDA SCL SCL INT INT P0 Subsystem 1 (e.g.
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Not Recommended for New Designs PCA9554 www.ti.com ........................................................................................................................................................ SCPS128B – JULY 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. The LED acts as a diode, so when the LED is off, the I/O VIN is about 1.2 V less than VCC.
PAGE 24
PACKAGE OPTION ADDENDUM www.ti.
PAGE 25
PACKAGE OPTION ADDENDUM www.ti.com 9-Oct-2013 (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
PAGE 26
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 PCA9554DBR SSOP DB 16 2000 330.0 16.4 PCA9554DGVR TVSOP DGV 16 2000 330.0 12.4 6.8 4.0 1.6 8.0 12.0 Q1 PCA9554DWR SOIC DW 16 2000 330.0 16.4 10.75 10.7 2.7 12.0 16.0 Q1 PCA9554PWR TSSOP PW 16 2000 330.
PAGE 27
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) PCA9554DBR SSOP DB 16 2000 367.0 367.0 38.0 PCA9554DGVR TVSOP DGV 16 2000 367.0 367.0 35.0 PCA9554DWR SOIC DW 16 2000 367.0 367.0 38.0 PCA9554PWR TSSOP PW 16 2000 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.
PAGE 36
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.