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Interface: I2C. Clock Frequency: 400kHz. Number of I/O Channels: 16. Number of Pins: 24.
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Interface: I2C, SMBus. Clock Frequency: 100kHz. Number of I/O Channels: 8. Number of Pins: 16. Mounting Type: Through Hole.
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eBay
8-channel I/O Expander 100kHz, I2C, 16-Pin SOIC. Number of I/O Channels 8 Interface I2C. Clock Frequency 100kHz. The PCF8574 is a silicon CMOS circuit. The PCF8574 has a low current consumption and includes latched outputs with high current drive capability for directly driving LEDs.
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eBay
Clock Frequency: 400kHz. Number of I/O: 16 (8 Output Only). Mounting Type: Surface Mount.
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