PCA9554N,112

Product Overview

Category

PCA9554N,112 belongs to the category of integrated circuits (ICs).

Use

The PCA9554N,112 is commonly used as an I/O expander for microcontrollers. It provides additional input/output ports, allowing the microcontroller to interface with a larger number of devices.

Characteristics

• I2C-bus interface compatibility
• 8-bit remote I/O port
• Low standby current consumption
• Schmitt trigger inputs
• Open-drain interrupt output
• Noise filter on SCL/SDA inputs
• ESD protection exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101

Package

The PCA9554N,112 is available in a small outline package (SOT96-1) with 16 pins.

Essence

The essence of PCA9554N,112 lies in its ability to expand the input/output capabilities of microcontrollers, enabling them to control a larger number of devices.

Packaging/Quantity

The PCA9554N,112 is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Supply voltage: 2.3 V to 5.5 V
• Input voltage range: GND to VDD
• Operating temperature range: -40°C to +85°C
• I2C-bus frequency: 100 kHz, 400 kHz, or 1 MHz
• Output current: ±10 mA

Detailed Pin Configuration

The PCA9554N,112 has a total of 16 pins, which are configured as follows:

1. A0: Address input bit 0
2. A1: Address input bit 1
3. A2: Address input bit 2
4. GND: Ground
5. P0: I/O port 0
6. P1: I/O port 1
7. P2: I/O port 2
8. P3: I/O port 3
9. P4: I/O port 4
10. P5: I/O port 5
11. P6: I/O port 6
12. P7: I/O port 7
13. INT: Interrupt output
14. SDA: I2C-bus data line
15. SCL: I2C-bus clock line
16. VDD: Supply voltage

Functional Features

The PCA9554N,112 offers the following functional features:

• Expandable I/O ports for microcontrollers
• Compatibility with I2C-bus interface
• Low power consumption in standby mode
• Schmitt trigger inputs for noise immunity
• Open-drain interrupt output for event notification
• Noise filter on SCL/SDA inputs to reduce interference
• ESD protection exceeding industry standards

Advantages and Disadvantages

Advantages

• Provides additional I/O ports for microcontrollers
• Easy integration with existing I2C-bus systems
• Low power consumption
• Enhanced noise immunity
• Reliable event notification through interrupt output
• Protection against electrostatic discharge (ESD)

Disadvantages

• Limited number of I/O ports (8-bit)
• Requires I2C-bus interface support from the microcontroller

Working Principles

The PCA9554N,112 operates by communicating with a microcontroller through the I2C-bus interface. It receives commands from the microcontroller to set the state (input or output) of its I/O ports. The device can be addressed using three address input pins (A0, A1, and A2), allowing multiple PCA9554N,112 devices to be connected on the same I2C-bus.

Detailed Application Field Plans

The PCA9554N,112 finds applications in various fields, including but not limited to:

1. Industrial automation: Controlling sensors, actuators, and other peripheral devices.
2. Home automation: Managing smart home devices such as lights, switches, and sensors.
3. Automotive electronics: Interface expansion for microcontrollers in automotive systems.
4. Internet of Things (IoT): Enabling connectivity and control of IoT devices.
5. Robotics: Expanding the I/O capabilities of microcontrollers in robotic systems.

Detailed and Complete Alternative Models

1. PCA9554PW,118
2. PCA9554DB,112
3. PCA9554D,112
4. PCA9554PW,112
5. PCA9554BS,118

These alternative models offer similar functionality to the PCA9554N,112 and can be considered as alternatives based on specific requirements and availability.

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