PCA9617ATPZ

Product Overview

Category: Integrated Circuit (IC)

Use: The PCA9617ATPZ is a differential I2C bus buffer that extends the range of the I2C bus by buffering both the data (SDA) and clock (SCL) lines. It allows for long-distance communication between devices on the I2C bus, making it ideal for applications where the distance between devices exceeds the typical I2C bus range.

Characteristics: - Differential I2C bus buffer - Extends the range of the I2C bus - Supports long-distance communication - Low power consumption - Small form factor

Package: The PCA9617ATPZ is available in a small 20-pin TSSOP package, which makes it suitable for space-constrained applications.

Essence: The essence of the PCA9617ATPZ is to enable reliable long-distance communication on the I2C bus by buffering the data and clock lines.

Packaging/Quantity: The PCA9617ATPZ is typically sold in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Supply Voltage: 2.3V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Maximum Data Rate: 400 kbps
• Maximum Bus Length: Up to 100 meters
• Number of Pins: 20

Pin Configuration

The PCA9617ATPZ has the following pin configuration:

1. SDA_IN: Input for the SDA line from the master device.
2. SCL_IN: Input for the SCL line from the master device.
3. GND: Ground reference.
4. VDD: Power supply voltage.
5. SDA_OUT: Output for the buffered SDA line.
6. SCL_OUT: Output for the buffered SCL line.
7. VDDA: Analog power supply voltage.
8. EN: Enable pin to control the buffer operation.
9. ADDR0: Address bit 0 for device addressing.
10. ADDR1: Address bit 1 for device addressing.
11. ADDR2: Address bit 2 for device addressing.
12. NC: No connection.
13. NC: No connection.
14. NC: No connection.
15. NC: No connection.
16. NC: No connection.
17. NC: No connection.
18. NC: No connection.
19. NC: No connection.
20. GND: Ground reference.

Functional Features

• Differential buffering of I2C bus lines
• Bidirectional data and clock line buffering
• Automatic direction sensing
• Supports multiple PCA9617ATPZ devices on the same bus
• Low power consumption in standby mode

Advantages and Disadvantages

Advantages: - Extends the range of the I2C bus, allowing long-distance communication - Small form factor package suitable for space-constrained applications - Low power consumption - Supports multiple devices on the same bus

Disadvantages: - Limited maximum data rate of 400 kbps - Requires additional components for proper operation

Working Principles

The PCA9617ATPZ works by buffering both the data (SDA) and clock (SCL) lines of the I2C bus. It uses differential signaling to extend the range of the bus, allowing for reliable communication over longer distances. The device automatically senses the direction of the bus and buffers the signals accordingly. It also supports multiple devices on the same bus, enabling complex I2C networks.

Detailed Application Field Plans

The PCA9617ATPZ is commonly used in various applications where long-distance communication on the I2C bus is required. Some of the potential application fields include:

1. Industrial Automation: The PCA9617ATPZ can be used in industrial automation systems to connect sensors, actuators, and other devices over long distances.
2. Automotive Electronics: It can be employed in automotive electronics for communication between different modules and subsystems.
3. Telecommunications: The device can facilitate long-distance communication between various telecom equipment and components.
4. Medical Devices: It can be utilized in medical devices that require reliable communication over extended distances.
5. Home Automation: The PCA9617ATPZ can enable communication between different smart home devices located far apart.

Detailed and Complete Alternative Models

1. PCA9600: Similar to the PCA9617ATPZ, the PCA9600 is a differential I2C bus buffer with a lower pin count.
2. PCA9615: This device offers similar functionality to the PCA9617ATPZ but comes in a different package and has a higher maximum data rate.
3. PCA9629: The PCA9629 is a differential I2C bus buffer with additional features such as level shifting