PI4IOE5V9539LEX

Product Overview

• Category: Integrated Circuit (IC)
• Use: I/O Expander
• Characteristics: High-voltage tolerant, low-power, bidirectional voltage-level translation
• Package: 20-pin SSOP package
• Essence: Provides a simple solution for voltage-level translation between different logic levels in mixed-mode applications
• Packaging/Quantity: Available in tape and reel packaging, quantity varies based on customer requirements

Specifications

• Supply Voltage Range: 1.65V to 5.5V
• Number of I/Os: 16
• Bidirectional Voltage Translation: Supports voltage translation from 1.2V to 5.5V
• I/O Compatibility: Compatible with both open-drain and push-pull output drivers
• Low Standby Current: Less than 1µA
• ESD Protection: ±8kV HBM, ±500V CDM

Detailed Pin Configuration

The PI4IOE5V9539LEX has a total of 20 pins. The pin configuration is as follows:

1. VCCA - Power supply for the A-side I/Os
2. GND - Ground
3. SDA - Serial Data Input/Output
4. SCL - Serial Clock Input
5. RESET - Reset Input
6. INT - Interrupt Output
7. OE - Output Enable Input
8. A0 - Address Input Bit 0
9. A1 - Address Input Bit 1
10. A2 - Address Input Bit 2
11. A3 - Address Input Bit 3
12. A4 - Address Input Bit 4
13. A5 - Address Input Bit 5
14. A6 - Address Input Bit 6
15. A7 - Address Input Bit 7
16. VCCB - Power supply for the B-side I/Os
17. GND - Ground
18. IO0 - Bidirectional I/O 0
19. IO1 - Bidirectional I/O 1
20. IO2 - Bidirectional I/O 2

Functional Features

• Bidirectional Voltage-Level Translation: Allows seamless communication between devices operating at different voltage levels.
• High-Voltage Tolerance: Supports translation between low-voltage and high-voltage systems, ensuring compatibility in mixed-mode applications.
• Low Standby Current: Consumes minimal power when not actively translating signals, making it suitable for battery-powered devices.
• Addressable I/Os: The device can be addressed using the address inputs, allowing multiple devices to be used on the same bus.

Advantages and Disadvantages

Advantages: - Simplifies voltage-level translation in mixed-mode applications - Low-power consumption - High-voltage tolerance - Addressable I/Os for multiple device usage

Disadvantages: - Limited number of I/Os (16 in total) - Requires additional control signals for operation

Working Principles

The PI4IOE5V9539LEX operates by receiving input signals from the A-side and translating them to the corresponding voltage level on the B-side. It uses a combination of level shifters and bidirectional voltage translators to achieve this. The device is controlled through the serial interface (SDA and SCL) and can be addressed using the address inputs (A0-A7). When the OE (Output Enable) input is low, the translated signals are enabled on the B-side I/Os.

Detailed Application Field Plans

The PI4IOE5V9539LEX finds applications in various fields, including:

1. Mixed-mode circuit design: Enables communication between devices operating at different voltage levels, such as microcontrollers, sensors, and displays.
2. Battery-powered devices: The low standby current makes it suitable for use in portable and battery-powered devices, extending battery life.
3. Industrial automation: Facilitates voltage-level translation in industrial control systems, allowing different components to communicate effectively.

Detailed and Complete Alternative Models

1. PCA9306: Bidirectional I2C-bus and SMBus voltage-level translator with automatic direction sensing.
2. TXB0108: 8-bit bidirectional voltage-level translator with automatic direction sensing.
3. SN74LVC4245A: Octal dual-supply translating transceiver with configurable voltage-level shifting and 3-state outputs.

These alternative models offer similar functionality and can be considered as alternatives to the PI4IOE5V9539LEX based on specific application requirements.

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