PCA9554PW,118 5.5V 85mA 400kHz 8-bit I2C-bus and SMBus I/O Port ic

• shape: Flat
• Conductive Type: Bipolar Integrated Circuit
• Integration: MSI
• Technics: Semiconductor IC
• Application: Standard Generalized Integrated Circuit
• Type: Digital / Analog IC
• Model NO.: PCA9554PW,118
• MFG.: NXP
• D/C: 22+
• Package: TSSOP16
• Quality: Genuine New Original
• Transport Package: Box
• Origin: China
• HS Code: 8542399000
• Production Capacity: 1000000PCS

Product Description

Description

PCA9554PW,118 : I/O Expander 8 I²C, SMBus 400 kHz 16-TSSOP

Mfr. Part#:   PCA9554PW,118

Datasheet: (e-mail or chat us for PDF file)

ROHS Status: 

Quality: 100% Original

Warranty: ONE YEAR

 

Product Status	Active
Number of I/O	8
Interface	I²C, SMBus
Interrupt Output	Yes
Features	POR
Output Type	Push-Pull
Current - Output Source/Sink	10mA, 25mA
Clock Frequency	400 kHz
Voltage - Supply	2.3V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	16-TSSOP (0.173", 4.40mm Width)
Supplier Device Package	16-TSSOP
Base Product Number	PCA9554

 

The PCA9554 and PCA9554A are 16-pin CMOS devices that provide 8 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C-bus/SMBus applications and were developed to enhance the NXP Semiconductors family of I2C-bus I/O expanders. The improvements include higher drive capability, 5 V I/O tolerance, lower supply current, individual I/O configuration, 400 kHz clock frequency, and smaller packaging. I/O expanders provide a simple solution when additional I/O is needed for ACPI power switches, sensors, push buttons, LEDs, fans, and so on. The PCA9554/PCA9554A consist of an 8-bit Configuration register (Input or Output selection); 8-bit Input Port register, 8-bit Output Port register and an 8-bit Polarity Inversion register (active HIGH or active LOW operation). 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 Port or Output Port register. The polarity of the read register can be inverted with the Polarity Inversion register. All registers can be read by the system master. Although pin-to-pin and I2C-bus address compatible with the PCF8574 series, software changes are required due to the enhancements and are discussed in Application Note AN469. The PCA9554/PCA9554A open-drain interrupt 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. The power-on reset sets the registers to their default values and initializes the device state machine. Three hardware pins (A0, A1, A2) vary the fixed I2C-bus address and allow up to eight devices to share the same I2C-bus/SMBus. The PCA9554A is identical to the PCA9554 except that the fixed I2C-bus address is different allowing up to sixteen of these devices (eight of each) on the same I2C-bus/SMBus.

 

 

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