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PCA9554ADW Datasheet(PDF) 2 Page - Texas Instruments |
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PCA9554ADW Datasheet(HTML) 2 Page - Texas Instruments |
2 / 33 page www.ti.com 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 Submit Documentation Feedback |
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