PCA9539PW,118

Product Overview

Category

PCA9539PW,118 belongs to the category of integrated circuits (ICs).

Use

This product is commonly used for input/output (I/O) expansion in various electronic devices.

Characteristics

• I2C-bus and SMBus compatible
• 16-bit remote I/O expander for Fm+ I2C-bus with interrupt
• Low standby current consumption of 1 µA
• 5 V tolerant inputs
• Open-drain interrupt output
• Polarity inversion register
• Active-low reset input
• Noise filter on SCL/SDA inputs
• No glitch on power-up
• Internal power-on reset
• Power-up with all channels configured as inputs
• 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

PCA9539PW,118 is available in a TSSOP package.

Essence

The essence of PCA9539PW,118 lies in its ability to expand the number of I/O pins in electronic devices, providing flexibility and increased functionality.

Packaging/Quantity

This product is typically packaged in reels and comes in quantities of 2500 units per reel.

Specifications

• Supply voltage: 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 PCA9539PW,118 has a total of 24 pins, which are assigned as follows:

1. SDA (Serial Data)
2. SCL (Serial Clock)
3. A0 (Address Bit 0)
4. A1 (Address Bit 1)
5. A2 (Address Bit 2)
6. RESET (Active-Low Reset)
7. INT (Interrupt Output) 8-23. P0-P15 (I/O Pins)

Functional Features

• I2C-bus and SMBus compatible interface for easy integration into existing systems.
• 16-bit remote I/O expander allows for the expansion of I/O pins in electronic devices.
• Low standby current consumption ensures energy efficiency.
• 5 V tolerant inputs enable compatibility with a wide range of devices.
• Open-drain interrupt output provides a signal for external interrupt handling.
• Polarity inversion register allows for flexible configuration of input/output polarities.
• Noise filter on SCL/SDA inputs helps to reduce interference.
• Glitch-free power-up ensures stable operation during startup.
• Internal power-on reset ensures reliable initialization.
• ESD protection exceeds industry standards, ensuring robustness against electrostatic discharge.
• Latch-up testing exceeds standard requirements, providing enhanced reliability.

Advantages and Disadvantages

Advantages

• Easy integration into existing systems due to I2C-bus and SMBus compatibility.
• Increased flexibility and functionality through I/O pin expansion.
• Energy-efficient design with low standby current consumption.
• Wide compatibility with 5 V tolerant inputs.
• Reliable interrupt handling with open-drain interrupt output.
• Flexible configuration of input/output polarities.
• Reduced interference with noise filter on SCL/SDA inputs.
• Stable operation during startup with glitch-free power-up.
• Enhanced reliability with internal power-on reset, ESD protection, and latch-up testing.

Disadvantages

• Limited to 16-bit I/O expansion, may not be suitable for applications requiring a larger number of I/O pins.
• Requires I2C-bus or SMBus interface for communication, which may not be available in all systems.

Working Principles

PCA9539PW,118 operates as a remote I/O expander using the Fm+ I2C-bus protocol. It communicates with the master device (e.g., microcontroller) through the I2C-bus or SMBus interface. The master device can control and read the state of the 16 I/O pins provided by PCA9539PW,118.

The device supports interrupt functionality, allowing the master device to receive an interrupt signal when a specific event occurs on any of the I/O pins. This enables efficient handling of time-critical events without continuously polling the device.

PCA9539PW,118 also features a polarity inversion register, which allows the user to configure the input/output polarities according to their requirements. This flexibility enhances compatibility with different devices and simplifies system design.

Detailed Application Field Plans

PCA9539PW,118 finds applications in various fields, including but not limited to:

1. Industrial automation: Used for I/O expansion in programmable logic controllers (