Product Folder Sample & Buy Technical Documents Tools & Software Support & Community PCA9539 SCPS130G – AUGUST 2005 – REVISED JUNE 2014 PCA9539 Remote 16-Bit I2C and SMBus Low-Power I/O Expander With Interrupt Output, Reset, and Configuration Registers 1 Features •1 Low Standby-Current Consumption of 1 μA Max • I2C to Parallel Port Expander • Open-Drain Active-Low Interrupt Output • Active-Low Reset Input • 5-V Tolerant I/O Ports • Compatible With Most Microcontrollers • 400-kHz Fast I2C Bus • Polarity Inversion Register • Address by Two Hardware Address Pins for Use of up to Four Devices • Latched Outputs With High-Current Drive Capability for Directly Driving LEDs • Latch-Up Performa...

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