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PCA9505 - 40-bit I2C-bus I/O port

Download the PCA9505 datasheet PDF. This datasheet also covers the PCA9506 variant, as both devices belong to the same 40-bit i2c-bus i/o port family and are provided as variant models within a single manufacturer datasheet.

General Description

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.

Key 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 s.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (PCA9506_NXPSemiconductors.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
PCA9502 8-bit I/O expander NXP Semiconductors
PCA9506 40-bit I2C-bus I/O port NXP Semiconductors
PCA9507 2-wire serial bus extender NXP Semiconductors
PCA9510A Hot swappable I2C-bus and SMBus bus buffer NXP Semiconductors
PCA9511A Hot swappable I2C-bus and SMBus bus buffer NXP Semiconductors

Other Datasheets by NXP Semiconductors

Part Number Description
PCA9500 8-bit I2C and SMBus I/O port
PCA9501 8-bit I2C and SMBus I/O port
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PCA9508 Hot swappable level translating I2C-bus repeater
PCA9509 Level translating I2C-bus/SMBus repeater

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
PCA9505_9506 40-bit I2C-bus I/O port with RESET, OE and INT Rev. 5 — 30 September 2021 Product data sheet 1 General description 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 ports are totem-pole and their logic state changes at the Acknowledge (bank change). The PCA9505 is identical to the PCA9506 except that it includes 100 kΩ internal pull-up resistors on all the I/Os.