PI4IOE5V9554LE

Product Overview

• Category: Integrated Circuit
• Use: I/O Expander
• Characteristics: High-speed, low-voltage, bidirectional voltage-level translator
• Package: 20-pin QFN package
• Essence: Provides voltage level translation between different logic levels
• Packaging/Quantity: Available in tape and reel packaging, quantity varies based on supplier

Specifications

• Supply Voltage: 1.65V to 5.5V
• Logic Voltage Levels: 1.2V to 3.3V
• Number of I/Os: 8
• I/O Voltage Translation: Bidirectional
• Maximum Data Rate: 400 Mbps
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The PI4IOE5V9554LE has a total of 20 pins. The pin configuration is as follows:

1. VCCA - Supply voltage for the A-side I/Os
2. GND - Ground
3. SDA - Serial data input/output
4. SCL - Serial clock input
5. OE - Output enable
6. INT - Interrupt output
7. RESET - Reset input
8. VCCB - Supply voltage for the B-side I/Os
9. GPIO0 - General-purpose I/O 0
10. GPIO1 - General-purpose I/O 1
11. GPIO2 - General-purpose I/O 2
12. GPIO3 - General-purpose I/O 3
13. GPIO4 - General-purpose I/O 4
14. GPIO5 - General-purpose I/O 5
15. GPIO6 - General-purpose I/O 6
16. GPIO7 - General-purpose I/O 7
17. NC - No connection
18. NC - No connection
19. NC - No connection
20. GND - Ground

Functional Features

• Bidirectional voltage-level translation between different logic levels
• Supports I2C-bus/SMBus applications
• 8 programmable I/O pins with configurable interrupt output
• Low standby current consumption
• ESD protection on all pins
• Schmitt trigger inputs for noise immunity

Advantages and Disadvantages

Advantages

• Wide supply voltage range allows compatibility with various systems
• High-speed data transfer up to 400 Mbps
• Small package size enables space-saving designs
• Configurable interrupt output enhances system flexibility
• ESD protection ensures robustness in harsh environments

Disadvantages

• Limited number of I/O pins may not be sufficient for complex applications
• Lack of support for other communication protocols like SPI or UART

Working Principles

The PI4IOE5V9554LE operates as a bidirectional voltage-level translator, allowing seamless communication between devices operating at different logic voltage levels. It utilizes internal level shifters to convert signals from one voltage level to another, ensuring proper signal integrity.

The device is controlled through the I2C-bus/SMBus interface, enabling easy configuration of I/O pins and interrupt settings. The interrupt output can be programmed to indicate changes on any of the I/O pins, providing efficient event-driven operation.

Detailed Application Field Plans

The PI4IOE5V9554LE finds applications in various fields, including:

1. Consumer Electronics: Enables voltage level translation between different components in smartphones, tablets, and gaming consoles.
2. Industrial Automation: Facilitates communication between devices operating at different logic levels in control systems and sensors.
3. Automotive Electronics: Allows integration of components with varying voltage requirements in automotive systems, such as infotainment and driver assistance systems.
4. Internet of Things (IoT): Supports voltage level translation in IoT devices, enabling seamless connectivity between sensors, actuators, and microcontrollers.

Detailed and Complete Alternative Models

1. PCA9306: Bidirectional I2C-bus and SMBus voltage-level translator with similar features.
2. TXB0108: 8-bit bidirectional voltage-level translator with support for multiple communication protocols.
3. SN74LVC4245A: Octal dual-supply translating transceiver with configurable direction control.

These alternative models offer similar functionality and can be considered based on specific application requirements.

In conclusion, the PI4IOE5V9554LE is a versatile I/O expander that provides bidirectional voltage-level translation between different logic levels. Its compact size, wide supply voltage range, and configurable features make it suitable for various applications in consumer electronics, industrial automation, automotive electronics, and IoT. While it has limitations in terms of the number of I/O pins and supported communication protocols, there are alternative models available to address specific needs.