PCA9537DP,118

Product Overview

Category

PCA9537DP,118 belongs to the category of integrated circuits (ICs).

Use

The PCA9537DP,118 is commonly used as an I/O expander for microcontrollers. It provides additional input/output pins, allowing the microcontroller to interface with a larger number of devices.

Characteristics

• I2C-bus interface compatibility
• 4-bit I/O expander with interrupt output
• Low standby current consumption
• Schmitt-trigger action on all inputs
• Open-drain interrupt output
• Active LOW reset input
• Noise filter on SCL/SDA inputs
• ESD protection exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101

Package

The PCA9537DP,118 is available in a small outline package (SOT266-1), also known as TSSOP-16.

Essence

The essence of PCA9537DP,118 lies in its ability to expand the input/output capabilities of microcontrollers, enabling them to control a larger number of devices.

Packaging/Quantity

The PCA9537DP,118 is typically packaged in reels, with 2500 units per reel.

Specifications

• Supply voltage range: 2.3 V to 5.5 V
• Input voltage range: 0 V to VDD
• Output voltage range: 0 V to VDD
• Operating temperature range: -40°C to +85°C
• Maximum frequency: 400 kHz

Detailed Pin Configuration

The PCA9537DP,118 has a total of 16 pins, which are assigned specific functions as follows:

| Pin Number | Pin Name | Function | |------------|----------|----------| | 1 | A0 | Address input bit 0 | | 2 | A1 | Address input bit 1 | | 3 | A2 | Address input bit 2 | | 4 | GND | Ground | | 5 | P00 | I/O port 0 | | 6 | P01 | I/O port 1 | | 7 | P02 | I/O port 2 | | 8 | P03 | I/O port 3 | | 9 | VDD | Supply voltage | | 10 | INT | Interrupt output | | 11 | SDA | I2C-bus data line | | 12 | SCL | I2C-bus clock line | | 13 | RESET | Active LOW reset input | | 14 | NC | No connection | | 15 | NC | No connection | | 16 | GND | Ground |

Functional Features

• The PCA9537DP,118 provides 4-bit I/O expansion through the I2C-bus interface.
• It supports interrupt functionality with an open-drain interrupt output pin (INT).
• The device features a low standby current consumption, making it suitable for power-sensitive applications.
• Schmitt-trigger action on all inputs ensures noise immunity and reliable operation.
• The active LOW reset input (RESET) allows for system initialization.
• The PCA9537DP,118 incorporates ESD protection, ensuring robustness against electrostatic discharge.

Advantages and Disadvantages

Advantages

• Provides additional I/O pins for microcontrollers, expanding their capabilities.
• Compatible with the widely used I2C-bus interface.
• Low standby current consumption makes it suitable for power-sensitive applications.
• Schmitt-trigger action on inputs enhances noise immunity.
• ESD protection ensures device reliability.

Disadvantages

• Limited to 4-bit I/O expansion, may not be sufficient for certain applications requiring a larger number of I/O pins.
• Requires an external microcontroller with I2C-bus interface for communication and control.

Working Principles

The PCA9537DP,118 operates by communicating with a microcontroller through the I2C-bus interface. The microcontroller sends commands and data to the PCA9537DP,118, which in turn controls the state of its I/O pins. This allows the microcontroller to interface with external devices connected to these pins.

Detailed Application Field Plans

The PCA9537DP,118 finds application in various fields where additional I/O pins are required. Some potential application areas include:

1. Industrial automation: Used to control and monitor multiple sensors, actuators, and devices in industrial settings.
2. Home automation: Enables the control of various home appliances and systems through a microcontroller.
3. Automotive electronics: Provides expanded I/O capabilities for controlling lights, switches, and other automotive components.
4. Internet of Things (IoT): Fac