PCA9554 Status: ACTIVE

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

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Datasheet

Remote 8-Bit I2C and SMBus I/O Expander (Rev. B) (PDF 561 KB)
05 Aug 2008
Datasheet Errata for PCA9557 and PCA6107 Device Types (Rev. A) (PDF 86 KB) 952 views
04 Aug 2008

	PCA9554
No. of Outputs	8
Interrupt Output	Yes
Technology Family	PCA
fSCLK(Max)(MHz)	400
VCC(Min)(V)	2.3
VCC(Max)(V)	5.5
Pin/Package	16SOIC, 16SSOP, 16TSSOP, 16TVSOP
Operating Temp Range(Celsius)	-40 to 85
Max Frequency(kHz)	400
I2C Address	0100 xxx
# of I/Os	8
Vcc range(V)	2.3 to 5.5
Configuration Registers	Yes
5V Tolerant I/O	Yes
Push–Pull I/O Type	Yes
	Samples
	Inventory

Customers Who Evaluated This Product Also Evaluated

PCA9554A: Remote 8-Bit I2C and SMBus I/O Expander with Interrupt Output and Configuration Registers
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TLV431A: Low Voltage Adjustable Precision Shunt Regulator
TVP5150AM1: Ultralow Power NTSC/PAL/SECAM Video Decoder w/Robust Sync Detector

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 V_CC 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 V_CC. 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

			Price	Packaging			CAD Design Tools	Samples
Device	Status	Temp (^oC)	Price \| Quantity	Package \| Pins	Top Side Marking	Package QTY \| Package Carrier	Footprints	Samples
PCA9554DB	ACTIVE	-40 to 85	0.95 \| 1ku	SSOP (DB) \| 16	View	80 \| TUBE	Purchase Samples
PCA9554DBG4	ACTIVE	-40 to 85	0.95 \| 1ku	SSOP (DB) \| 16	View	80 \| TUBE	Purchase Samples
PCA9554DBR	ACTIVE	-40 to 85	0.85 \| 1ku	SSOP (DB) \| 16	View	2000 \| LARGE T&R
PCA9554DBRG4	ACTIVE	-40 to 85	0.85 \| 1ku	SSOP (DB) \| 16	View	2000 \| LARGE T&R
PCA9554DGVR	ACTIVE	-40 to 85	0.85 \| 1ku	TVSOP (DGV) \| 16		2000 \| LARGE T&R
PCA9554DGVRG4	ACTIVE	-40 to 85	0.85 \| 1ku	TVSOP (DGV) \| 16		2000 \| LARGE T&R
PCA9554DW	ACTIVE	-40 to 85	0.95 \| 1ku	SOIC (DW) \| 16	View	40 \| TUBE	Purchase Samples
PCA9554DWG4	ACTIVE	-40 to 85	0.95 \| 1ku	SOIC (DW) \| 16	View	40 \| TUBE	Purchase Samples
PCA9554DWR	ACTIVE	-40 to 85	0.85 \| 1ku	SOIC (DW) \| 16	View	2000 \| LARGE T&R
PCA9554DWRG4	ACTIVE	-40 to 85	0.85 \| 1ku	SOIC (DW) \| 16	View	2000 \| LARGE T&R
PCA9554PW	ACTIVE	-40 to 85	0.95 \| 1ku	TSSOP (PW) \| 16	View	90 \| TUBE	Purchase Samples
PCA9554PWG4	ACTIVE	-40 to 85	0.95 \| 1ku	TSSOP (PW) \| 16	View	90 \| TUBE	Purchase Samples
PCA9554PWR	ACTIVE	-40 to 85	0.85 \| 1ku	TSSOP (PW) \| 16	View	2000 \| LARGE T&R
PCA9554PWRG4	ACTIVE	-40 to 85	0.85 \| 1ku	TSSOP (PW) \| 16	View	2000 \| LARGE T&R

* 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 11:45 AM GMT, 20 Nov 2009
Region	Company	In Stock	Purchase
TI Lead Time*: 15 WeeksPCA9554DB
Americas	Arrow	156
	Newark	294
	Rochester Electronics	>1k
Asia	Farnell Asia	214
Asia	WPI	80
Europe	Avnet-SILICA	320
Europe	Farnell	186
Worldwide	DigiKey	Available
Worldwide	Mouser Electronics	371
TI Lead Time*: 15 WeeksPCA9554DBG4
Worldwide	DigiKey	Available
TI Lead Time*: 15 WeeksPCA9554DBR
Americas	Arrow	>1k
Americas	Rochester Electronics	>1k
Europe	Avnet-SILICA	>1k
Worldwide	DigiKey	415
TI Lead Time*: 15 WeeksPCA9554DBRG4
Worldwide	DigiKey	Available
TI Lead Time*: 16 WeeksPCA9554DGVR
Americas	Arrow	>1k
Americas	Rochester Electronics	>1k
Worldwide	DigiKey	>1k
TI Lead Time*: 16 WeeksPCA9554DGVRG4
Worldwide	DigiKey	Available
TI Lead Time*: 15 WeeksPCA9554DW
Americas	Arrow	640
Americas	Rochester Electronics	>1k
Asia	WPI	80
Europe	Avnet-SILICA	80
Worldwide	DigiKey	Available
Worldwide	Mouser Electronics	219
TI Lead Time*: 15 WeeksPCA9554DWG4
Worldwide	DigiKey	Available
TI Lead Time*: 15 WeeksPCA9554DWR
Americas	Arrow	>1k
Americas	Rochester Electronics	>1k
Asia	WPI	>1k
Europe	Avnet-SILICA	>1k
Worldwide	DigiKey	921
TI Lead Time*: 15 WeeksPCA9554DWRG4
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksPCA9554PW
Americas	Arrow	152
	Newark	201
	Rochester Electronics	251
Asia	Farnell Asia	843
Europe	Avnet-SILICA	80
Europe	Farnell	340
Worldwide	DigiKey	Available
Worldwide	Mouser Electronics	290
TI Lead Time*: 20 WeeksPCA9554PWG4
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksPCA9554PWR
Americas	Rochester Electronics	>1k
Asia	WPI	856
Worldwide	DigiKey	>1k
TI Lead Time*: 20 WeeksPCA9554PWRG4
Worldwide	DigiKey	Available
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 Content				DPPM / MTBF / FIT Rate
Device	Eco Plan*	Lead / Ball Finish	MSL Rating / Peak Reflow	Details	Details
PCA9554DB	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9554DBG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9554DBR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9554DBRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9554DGVR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9554DGVRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9554DW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9554DWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9554DWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9554DWRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9554PW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9554PWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9554PWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
PCA9554PWRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View

* 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

Datasheet

Remote 8-Bit I2C and SMBus I/O Expander (Rev. B) (PDF, 561 KB)
05 Aug 2008

Application Notes

Shelf-Life Evaluation of Lead-Free Component Finishes (HTM, 8 KB) 27183 views
24 May 2004 Read Abstract
Understanding and Interpreting Standard-Logic Data Sheets (Rev. B) (HTM, 8 KB) 21623 views
28 May 2003 Read Abstract
Programming Fun Lights With TI's TCA6507 (HTM, 8 KB) 3555 views
30 Nov 2007 Read Abstract

Selection Guides

Logic Guide 2009 (Rev. Z) (PDF, 4263 KB) 90161 views
23 Jul 2009
I2C Guide (Rev. B) (PDF, 2830 KB) 13396 views
12 Aug 2009

Errata

Datasheet Errata for PCA9557 and PCA6107 Device Types (Rev. A) (PDF, 86 KB) 952 views
04 Aug 2008

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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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