Product Overview: PCA9617ATPZ from NXP

The PCA9617ATPZ is a high-performance, robust I²C-bus repeater designed by NXP Semiconductors. This device allows for extended signaling on the I²C-bus by splitting the bus into two segments that can be controlled individually. It is particularly useful in applications where the bus needs to be extended across a greater distance or to interface with multiple devices without signal degradation.

Key Features

• Hot-Swappable: The PCA9617ATPZ can be added to or removed from a live I²C-bus without the need to power down the system, ensuring minimal disruption to ongoing operations.
• Level Shifting: It can operate on different voltages on each side, which allows for level shifting between 1.0V, 1.2V, 1.8V, 2.5V, 3.3V, and 5.0V buses.
• Increased Bus Capacitance: With this device, the maximum capacitive load on the bus can be increased, allowing more devices to be connected or longer bus lengths to be achieved.
• Enhanced Signal Integrity: The built-in hot-swap circuitry minimizes the glitches on the bus lines during insertion, which helps maintain signal integrity.
• Fail-Safe Function: It includes a fail-safe feature that prevents the bus from being stuck in a low state if the bus lines are idle and not being driven by any device.

Applications

The PCA9617ATPZ is versatile and finds applications across various industries. It is ideal for:

• Industrial control systems
• Automotive networks
• Consumer electronics
• Telecommunications infrastructure
• Medical equipment

Technical Specifications

Encased in a TSSOP8 package, the PCA9617ATPZ operates over the -40°C to +85°C temperature range. It integrates two bidirectional buffers that provide capacitive isolation between the upstream and downstream sides of the I²C-bus. The device also supports the standard (100 kHz), fast (400 kHz), and fast-mode plus (1 MHz) I²C-bus speeds.

In summary, the PCA9617ATPZ by NXP is a sophisticated I²C-bus repeater that offers enhanced functionality for systems requiring reliable long-distance or multi-device communication over the I²C-bus. Its ability to maintain signal integrity and provide level shifting makes it a valuable component in a wide range of electronic systems.