Overview of Maxim Integrated 71M6515H-IGTR/F

The Maxim Integrated 71M6515H-IGTR/F is a high-performance USB SuperSpeed (USB 3.0) redriver device designed to enhance signal integrity and extend the reach of USB 3.0 data lines. It is commonly used in high-speed data communication applications, including computer motherboards, docking stations, and high-speed USB hubs. The device equalizes and conditions the transmitted and received USB 3.0 differential signals to improve signal quality and reduce bit error rates over longer or lower-quality cables.

Key Features

* USB 3.0 SuperSpeed redriver compliant with the USB 3.0 specification, supporting data rates up to 5 Gbps
* Integrated continuous-time linear equalizer (CTLE) and output de-emphasis to compensate for cable losses and channel impairments
* Supports low voltage differential signaling (LVDS) with 85 Ω differential input/output impedance for optimal signal matching
* Adjustable equalization and output swing settings for optimized signal conditioning tailored to specific system requirements
* Low power consumption for efficient operation in mobile and desktop platforms
* Supports full backward compatibility with USB 2.0 and USB 1.1 signaling (through redriver function or transparent bypass)
* Automatic signal detect and output driver enable features to reduce power consumption when no signal is present
* Small footprint 24-pin TQFN package suitable for compact PCB layouts
* Operating temperature range: 0°C to +85°C, suitable for commercial temperature environments

Detailed Specifications

* Data Rate Support: Up to 5 Gbps for USB 3.0 SuperSpeed operation
* Input/Output Impedance: 85 Ω differential impedance for both input and output to match USB differential pairs
* Equalization: Integrated CTLE with adjustable settings to compensate for frequency-dependent loss and ISI (intersymbol interference)
* Output De-emphasis: Programmable de-emphasis levels to reduce overshoot and ringing on output signals
* Power Supply Voltage: 3.3 V typical supply voltage
* Power Consumption: Typically low, in the range of milliwatts depending on operating mode and settings
* Package Type: 24-pin Thin Quad Flat No-Lead (TQFN) package, 4 mm × 4 mm footprint for space-constrained applications
* Signal Detection: Automatic input signal presence detection with output driver enable/disable for power saving
* Operating Temperature: 0°C to +85°C, commercial grade
* Compliance: Meets USB 3.0 specification and SuperSpeed electrical requirements

Functional Description

The 71M6515H-IGTR/F operates as a redriver between the USB host or hub controller and the USB connector, improving the quality of high-speed data signals. The device applies linear equalization on the receive path to compensate for losses due to PCB traces, connectors, and cable attenuation. On the transmit path, output de-emphasis reduces signal overshoot and ringing that can cause signal integrity issues and reduce system reliability.

By improving the signal quality on both receive and transmit paths, the device enables longer cable lengths and maintains compliance with USB 3.0 SuperSpeed signal integrity requirements. This helps prevent data errors and ensures reliable high-speed communication.

The redriver features flexible programming options allowing system designers to adjust equalization and output swing parameters to match specific board layouts, cable types, and system topologies. This configurability is essential in complex designs where signal degradation varies with system components.

Applications

* USB 3.0 host controllers and device ports on PCs and laptops
* USB 3.0 hubs and docking stations requiring signal conditioning
* External USB 3.0 storage devices and enclosures
* Consumer electronics with USB 3.0 interfaces, such as TVs and media players
* Industrial and embedded systems needing robust USB 3.0 connectivity

Performance and Reliability

Designed for reliable operation in consumer and commercial systems, the 71M6515H-IGTR/F incorporates built-in features that enhance robustness and signal integrity. Low power operation minimizes thermal issues, and the compact package supports high-density PCB layouts.

Its signal conditioning capabilities allow system designers to extend USB 3.0 connections beyond typical limitations, maintaining low bit error rates and high data throughput. The device’s automatic signal detection feature contributes to power savings, especially in battery-powered applications.

Summary

The Maxim Integrated 71M6515H-IGTR/F is a versatile USB 3.0 SuperSpeed redriver that addresses signal integrity challenges in high-speed USB data paths. With adjustable equalization, output de-emphasis, and automatic power management, it enables designers to implement longer, more reliable USB 3.0 connections across various applications. Its compact package, low power consumption, and compliance with USB specifications make it a valuable component in modern high-speed data communication systems.