PCA9506 - NXP Semiconductors

PCA9506 40-bit I2C-bus I/O port

The PCA9505/PCA9506 provide 40-bit parallel input/output (I/O) port expansion for I2Cbus applications organized in 5 banks of 8 I/Os. At 5 V supply voltage, the outputs are capable of sourcing 10 mA and sinking 15 mA with a total package load of 600 mA to allow direct driving of 40 LEDs. Any of the 40 I/O ports can be configured as an input or output. Output.

Features

• Standard mode (100 kHz) and Fast mode (400 kHz) compatible I2C-bus serial interface
• 2.3 V to 5.5 V operation with 5.5 V tolerant I/Os
• 40 configurable I/O pins that default to inputs at power-up
• PCA9505 includes 100 kΩ internal pull-up resistors on all the I/Os
• Outputs:
  – Totem-pole (10 mA source, 15 mA sink) with controlled edge rate output structure
  – Active LOW output enable (OE) input pin 3-states all outputs
  – Output state change on Acknowledge
  – Open-drain active LOW interrupt (INT) output pin allows monitoring of logic level change of pins programmed as inputs NXP Semiconducto.