NXP | PCA9671PW,118

The PCA9671 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 (Fm+) family.

The PCA9671 is a drop in upgrade for the PCF8575 providing higher 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) to allow many more devices on the bus without address conflicts.

Features and benefits:

• 1 MHz I2C-bus interface
• Compliant with the I2C-bus Fast-mode and Standard-mode
• SDA with 30 mA sink capability for 4000 pF buses
• 2.3 V to 5.5 V operation with 5.5 V tolerant I/Os
• 16-bit remote I/O pins that default to inputs at power-up
• Latched outputs with 25 mA sink capability for directly driving LEDs
• Total package sink capability of 400 mA
• Active LOW reset input
• 64 programmable slave addresses using 3 address pins
• Readable device ID (manufacturer, device type, and revision)
• Low standby current

Applications:

• LED signs and displays
• Servers
• Industrial control
• Medical equipment
• PLCs
• Cellular telephones
• Gaming machines
• Instrumentation and test measurement