PCA9555PW,118 5.5V 160mA 400kHz 16-bit I2C-bus and SMBus IC electronic components

• shape: Flat
• Conductive Type: Bipolar Integrated Circuit
• Integration: MSI
• Technics: Semiconductor IC
• Application: Standard Generalized Integrated Circuit
• Type: Digital / Analog IC
• Model NO.: PCA9555PW,118
• D/C: 22+
• Package: TSSOP24
• Quality: Genuine New Original
• Product status: Active
• Transport Package: Box
• Origin: China
• HS Code: 8542399000
• Production Capacity: 1000000PCS

Product Description

Description

 PCA9555PW,118 : I/O Expander 16 I²C, SMBus 400 kHz 24-TSSOP

Mfr. Part#:   PCA9555PW,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	16
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	24-TSSOP (0.173", 4.40mm Width)
Supplier Device Package	24-TSSOP
Base Product Number	PCA9555

The PCA9555 is a 24-pin CMOS device that provides 16 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C-bus/SMBus applications and was 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, 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, etc. The PCA9555 consists of two 8-bit Configuration (Input or Output selection); Input, Output and Polarity Inversion (active HIGH or active LOW operation) registers. 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 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 PCF8575, software changes are required due to the enhancements, and are discussed in Application Note AN469. The PCA9555 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 fixed I2C-bus address of the PCA9555 is the same as the PCA9554, allowing up to eight of these devices in any combination to share the same I2C-bus/SMBus.

 

 

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