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PCA9554APWR 数据表(PDF) 2 Page - Texas Instruments

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部件名 PCA9554APWR
功能描述  REMOTE 8-BIT I2C AND SMBus I/O EXPANDER WITH INTERRUPT OUTPUT AND CONFIGURATION REGISTERS
PDF  33 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

PCA9554APWR 数据表(HTML) 2 Page - Texas Instruments

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PCA9554A
REMOTE 8-BIT I2C AND SMBus I/O EXPANDER
WITH INTERRUPT OUTPUT AND CONFIGURATION REGISTERS
SCPS127A – SEPTEMBER 2006 – REVISED FEBRUARY 2007
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 PCA9554A is pin-to-pin and I2C address compatible with the PCF8574A. However, software changes are
required, due to the enhancements in the PCA9554A over the PCF8574A.
The PCA9554A and PCA9554 are identical except for their fixed I2C address. This allows for up to sixteen of
these devices (eight of each) on the same I2C/SMBus.
ORDERING INFORMATION
TA
PACKAGE(1)
ORDERABLE PART NUMBER
TOP-SIDE MARKING
QFN – RGT
Reel of 3000
PCA9554ARGTR
PREVIEW
QFN – RGV
Reel of 2500
PCA9554ARGVR
PREVIEW
Tube of 75
PCA9554ADBQ
QSOP – DBQ
PD554A
Reel of 2500
PCA9554ADBQR
Tube of 40
PCA9554ADW
SOIC – DW
PREVIEW
Reel of 2000
PCA9554ADWR
–40
°C to 85°C
PCA9554ADB
Tube of 80
SSOP – DB
PCA9554ADBG4
PD554A
Reel of 2000
PCA9554ADBR
Tube of 90
PCA9554APW
TSSOP – PW
PD554A
Reel of 2000
PCA9554APWR
Reel of 2000
PCA9554ADGVR
TVSOP – DGV
PD554A
Reel of 125
PCA9554ADGV
(1)
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
2
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