Overview
The PCA9505DGG,112 is a 40-bit I²C-bus I/O port expander produced by NXP USA Inc. This component is designed to provide parallel input/output (I/O) port expansion for I²C-bus applications. It is organized into 5 banks of 8 I/Os, making it versatile for various applications requiring multiple I/O configurations.
The device operates within a supply voltage range of 2.3V to 5.5V and is compatible with both standard mode (100 kHz) and fast mode (400 kHz) I²C-bus serial interfaces. It features an open-drain interrupt output, output enable pin, and power-on reset, making it suitable for complex I/O management in embedded systems.
Key Specifications
| Parameter | Value |
|---|---|
| Part Number | PCA9505DGG,112 |
| Manufacturer | NXP USA Inc. |
| Description | IC I/O EXPANDER I2C 40B 56TSSOP |
| Package / Case | 56-TFSOP (0.240, 6.10mm Width) |
| Mounting Type | Surface Mount |
| Number of I/Os | 40 |
| Operating Temperature | -40°C ~ 85°C |
| Voltage - Supply | 2.3V ~ 5.5V |
| Interface | I²C |
| Clock Frequency | 400 kHz |
| Interrupt Output | Yes, Open-Drain |
| Current - Output Source/Sink | 100 μA / 25 mA |
| Output Type | Push-Pull |
| Power-On Reset (POR) | Yes |
| Address Select Pins | 3 pins, allowing 8 target addresses |
| ESD Protection | Exceeds 2000 V HBM per JESD22-A114 |
Key Features
- 40-bit I/O Port Expansion: Organized in 5 banks of 8 I/Os, each configurable as input or output.
- I²C-Bus Interface: Compatible with standard mode (100 kHz) and fast mode (400 kHz) I²C-bus serial interfaces.
- Supply Voltage Range: Operates from 2.3V to 5.5V with 5.5V tolerant I/Os.
- Interrupt Capabilities: Open-drain interrupt output pin allows monitoring of input pins.
- Output Enable (OE): Active LOW output enable input pin 3-states all outputs.
- Power-On Reset (POR): Initializes the 40 I/Os as inputs.
- Address Selectability: 3 programmable address pins allowing up to 8 devices on the same bus.
- ESD Protection: Exceeds 2000 V HBM per JESD22-A114, 200 V MM per JESD22-A115, and 1000 V CDM per JESD22-C101.
- Low Standby Current: Designed for low power consumption.
Applications
- Embedded Systems: Ideal for expanding I/O capabilities in microcontrollers and other embedded systems.
- Industrial Automation: Suitable for use in industrial control systems, sensors, and actuators.
- Consumer Electronics: Used in various consumer electronic devices requiring multiple I/O configurations.
- Automotive Systems: Can be used in automotive applications due to its robust interrupt capabilities and wide operating temperature range.
- Medical Devices: Applicable in medical devices that require reliable and expandable I/O interfaces.
Q & A
- What is the PCA9505DGG,112 used for?
The PCA9505DGG,112 is used for 40-bit parallel input/output (I/O) port expansion in I²C-bus applications.
- What is the operating voltage range of the PCA9505DGG,112?
The operating voltage range is from 2.3V to 5.5V.
- What type of interface does the PCA9505DGG,112 use?
The PCA9505DGG,112 uses an I²C-bus interface.
- How many I/Os does the PCA9505DGG,112 provide?
The PCA9505DGG,112 provides 40 configurable I/Os.
- What is the maximum clock frequency of the PCA9505DGG,112?
The maximum clock frequency is 400 kHz.
- Does the PCA9505DGG,112 have internal pull-up resistors?
Yes, the PCA9505DGG,112 includes 100 kΩ internal pull-up resistors on all the I/Os.
- How many address select pins does the PCA9505DGG,112 have?
The PCA9505DGG,112 has 3 programmable address pins, allowing up to 8 devices on the same bus.
- What is the operating temperature range of the PCA9505DGG,112?
The operating temperature range is from -40°C to 85°C.
- Does the PCA9505DGG,112 have ESD protection?
Yes, it exceeds 2000 V HBM per JESD22-A114, 200 V MM per JESD22-A115, and 1000 V CDM per JESD22-C101.
- What is the purpose of the Output Enable (OE) pin?
The Output Enable (OE) pin 3-states all outputs and can be used to blink or dim LEDs.
- How does the Power-On Reset (POR) function work?
The Power-On Reset (POR) initializes the 40 I/Os as inputs at power-up.
