PCA9538PWRG4

Product Overview

Category: Integrated Circuit (IC)

Use: The PCA9538PWRG4 is a 8-bit I2C-bus and SMBus I/O expander designed for general-purpose input/output expansion applications. It provides remote I/O expansion for most microcontroller families via the I2C-bus interface.

Characteristics: - 8-bit remote I/O port with interrupt and reset - Low standby current consumption of 1 µA - Compatible with I2C-bus and SMBus interfaces - 5 V tolerant I/Os - Internal power-on reset - Noise filter on SCL/SDA inputs - No glitch on power-up - Supports hot insertion - Low standby current - ESD protection exceeds JESD 22, 2000-V human-body model (A114-A) - Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA

Package: TSSOP (Thin Shrink Small Outline Package)

Essence: The PCA9538PWRG4 is an essential component for expanding the input/output capabilities of microcontrollers through the I2C-bus interface.

Packaging/Quantity: The PCA9538PWRG4 is available in tape and reel packaging, 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
• I2C-bus Frequency: 100 kHz, 400 kHz, and 1 MHz

Detailed Pin Configuration

The PCA9538PWRG4 has a total of 16 pins. The pin configuration is as follows:

1. P0 - I/O Port 0
2. P1 - I/O Port 1
3. P2 - I/O Port 2
4. P3 - I/O Port 3
5. P4 - I/O Port 4
6. P5 - I/O Port 5
7. P6 - I/O Port 6
8. P7 - I/O Port 7
9. INT - Interrupt Output
10. A0 - Slave Address Input 0
11. A1 - Slave Address Input 1
12. A2 - Slave Address Input 2
13. SDA - Serial Data Line
14. SCL - Serial Clock Line
15. GND - Ground
16. VDD - Supply Voltage

Functional Features

• Provides 8-bit remote I/O expansion
• Supports both I2C-bus and SMBus interfaces
• Low standby current consumption for power efficiency
• Noise filter on SCL/SDA inputs to reduce signal interference
• Hot insertion support for easy integration
• ESD protection and latch-up testing for enhanced reliability

Advantages and Disadvantages

Advantages: - Easy integration with microcontrollers via I2C-bus interface - Low standby current consumption for power efficiency - Wide supply voltage range allows compatibility with various systems - Robust ESD protection and latch-up testing ensure reliability

Disadvantages: - Limited number of I/O ports (8-bit)

Working Principles

The PCA9538PWRG4 operates by communicating with a microcontroller through the I2C-bus or SMBus interface. It acts as an I/O expander, allowing the microcontroller to control and monitor additional input/output pins. The device can be addressed using three address inputs (A0, A1, and A2), enabling multiple PCA9538PWRG4 devices to be connected on the same bus.

Detailed Application Field Plans

The PCA9538PWRG4 finds applications in various fields where additional I/O expansion is required. Some of the detailed application field plans include: - Industrial automation - Home automation - Automotive electronics - Internet of Things (IoT) devices - Robotics - Sensor interfaces - LED lighting control systems

Detailed and Complete Alternative Models

1. PCA9555PW: 16-bit I2C-bus and SMBus I/O expander
2. MCP23017-E/SP: 16-bit I2C-bus I/O expander with interrupt output
3. MAX7313AUG+: 16-bit I2C-bus I/O expander with push-pull outputs
4. TCA9539PW: 16-bit I2C-bus and SMBus I/O expander with interrupt output
5. PCF8574APW: 8-bit I2C-bus and SMBus I/O expander

These alternative models offer similar