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PCA9534ADWR Datasheet(PDF) 2 Page - Texas Instruments |
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PCA9534ADWR Datasheet(HTML) 2 Page - Texas Instruments |
2 / 39 page PCA9534A SCPS141F – SEPTEMBER 2006 – REVISED JUNE 2010 www.ti.com 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 PCA9534A can remain a simple slave device. The device's outputs (latched) have high-current drive capability for directly driving LEDs. It has 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 PCA9534A is pin-to-pin and I2C address compatible with the PCF8574A. However, software changes are required due to the enhancements in the PCA9534A over the PCF8574A. The PCA9534A is a low-power version of the PCA9554A. The only difference between the PCA9534A and PCA9554A is that the PCA9534A eliminates an internal I/O pullup resistor, which dramatically reduces power consumption in the standby mode when the I/Os are held low. The PCA9534A and PCA9534 are identical, except for their fixed I2C address. This allows for up to 16 of these devices (8 of each) on the same I2C bus. ORDERING INFORMATION TA PACKAGE(1) (2) ORDERABLE PART NUMBER TOP-SIDE MARKING QFN – RGT Reel of 3000 PCA9534ARGTR ZVJ QFN – RGV Reel of 2500 PCA9534ARGVR PD534A QSOP – DBQ Reel of 2500 PCA9534ADBQR PDA534A Tube of 40 PCA9534ADW SOIC – DW PCA9534A Reel of 2000 PCA9534ADWR –40°C to 85°C Reel of 2000 PCA9534ADBR SSOP – DB PDA534A Tube of 80 PCA9534ADB Tube of 90 PCA9534APW TSSOP – PW PD534A Reel of 2000 PCA9534APWR TVSOP – DGV Reel of 2000 PCA9534ADGVR PD534A (1) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging. (2) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI website at www.ti.com. 2 Submit Documentation Feedback Copyright © 2006–2010, Texas Instruments Incorporated Product Folder Link(s): PCA9534A |
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