Design Files
Receive the full breakdown. See the product footprint and more in the eCad file.
- No Longer Manufactured
- PCA9675DB
Remote 16-bit I/O expander for Fm+ I2C-bus with interrupt
- This page contains information on a product that is no longer manufactured (discontinued). Specifications and information herein are available for historical reference only.
The PCA9675 provides general purpose remote I/O expansion for most microcontroller families via the two-line bidirectional bus (I²C-bus) and is a part of the Fast-mode Plus family.
The PCA9675 is a drop in upgrade for the PCF8575 providing higher Fast-mode Plus (Fm+) I²C-bus speeds (1 MHz versus 400 kHz) so that the output can support PWM dimming of LEDs, higher I²C-bus drive (30 mA versus 3 mA) so that many more devices can be on the bus without the need for bus buffers, higher total package sink capacity (400 mA versus 100 mA) that supports having all 25 mA LEDs on at the same time and more device addresses (64 versus 8) are available to allow many more devices on the bus without address conflicts.
The device consists of a 16-bit quasi-bidirectional port and an I²C-bus interface. The PCA9675 has a low current consumption and includes latched outputs with high current drive capability for directly driving LEDs.
It also possesses an interrupt line (INT) which can be connected to the interrupt logic of the 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. The internal Power-On Reset (POR) or software reset sequence initializes the I/Os as inputs.
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Documentation
Quick reference to our documentation types.
1-5 of 8 documents
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Application Note
Driving stepper motors using NXP I2C-bus GPIO expanders
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User Guide
I2C-bus specification and user manual
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Package Information
plastic shrink small outline package; 24 leads; body width 5.3 mm
