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Home > Products > Integrated Circuits (ICs) > Interface > Specialized

Analog Devices Inc./Maxim Integrated MAX14975ETG+

Name: MAX14975ETG+
Brand: Analog Devices Inc./Maxim Integrated
SKU: MAX14975ETG+
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MAX14975ETG+

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: Specialized

Package:: 24-WFQFN Exposed Pad

Datasheet:: MAX14975ETG+.pdf

Description:: DUAL USB 3.0 EQUALIZER/REDRIVER

Quantity:: RFQ Add To RFQ list

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Product details

Overview

MAX14975ETG+ from Maxim Integrated is a dual-channel USB 3.0 (5 Gbps) equalizer/redriver IC designed to compensate for channel loss in industrial and embedded systems. It delivers programmable input equalization (up to 10 dB), output deemphasis (up to 4 dB), deterministic jitter ≤12 ps_P-P, random jitter ≤1 ps_RMS, and operates across -40°C to +85°C in a 24-pin TQFN package.

For engineers reviewing the MAX14975ETG+ datasheet, MAX14975ETG+ pinout, MAX14975ETG+ application, or MAX14975ETG+ equivalent, this page provides verified electrical parameters, USB 3.0 LFPS support details, power-state current values (standby <1 mW, active 304 mW), thermal resistance (θ_JA = 36°C/W), and real-world use cases in carrier boards and rack-server industrial PCs.

Technical Context

The MAX14975ETG+ implements two independent redriver channels with separate EQ_/DE_/OS_/ENRXD control logic per channel, enabling precise compensation of asymmetric trace/cable losses on both host and device sides of a SuperSpeed USB link. Each channel supports three-level input equalization and six-level output deemphasis, with explicit LFPS detection (100–300 mV_P-P threshold) and squelch behavior.

Its advanced power management includes four defined states: standby (<1 mW), receiver detect (23 mW), dynamic power-down (82.5 mW), and active (304 mW), all triggered via ENRXD and CM pins. The device maintains USB 3.0 compliance mode (CM = 1) with full LFPS pass-through and no receiver detection or power-down activation.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	3.0 V to 3.6 V - ensures compatibility with standard 3.3 V industrial power rails and tolerates ±10% variation without regulation.
Data Rate Support	5.0 Gbps - fully compliant with USB 3.0 SuperSpeed signaling, not USB 3.1/3.2 or Gen2+.
Deterministic Jitter	≤12 ps_P-P - guarantees eye opening sufficient for USB 3.0 receiver margin at end-of-link after 30-inch FR4 traces.
Input Equalization	Up to 10 dB - compensates for high-frequency loss in long PCB traces or passive cables before signal degradation exceeds receiver tolerance.
Output Deemphasis	Up to 4 dB - reduces inter-symbol interference by attenuating high-frequency components in transition bits relative to nontransition bits.
ESD Protection	±8 kV HBM on all pins - enables robust operation in industrial environments with frequent handling or unshielded connectors.
Thermal Resistance	θ_JA = 36°C/W - allows continuous operation at full load up to +85°C ambient when mounted on a 4-layer board with exposed pad soldered to ground plane.

Pinout & Package

The MAX14975ETG+ is housed in a 4.0 mm × 4.0 mm, 24-pin TQFN-EP package with exposed pad (EP) internally connected to GND. The flow-through pin arrangement minimizes signal crosstalk and simplifies routing of differential pairs (RX1±/TX1±/RX2±/TX2±) with matched lengths.

Pin/Terminal	Circuit Role	Design Meaning
VCC (Pins 1, 13)	Power supply input	Must be decoupled with parallel 0.1 µF + 2.2 µF low-ESR capacitors placed within 2 mm of each pin to suppress high-frequency noise and ensure stable redriver operation.
RX1+/RX1−, RX2+/RX2− (Pins 8, 9, 19, 20)	Differential inputs (Ch1 & Ch2)	AC-coupled via 100 nF X7R capacitors; accept 150–1200 mV_P-P USB 3.0 signals; 72–120 Ω differential input impedance matches standard PCB trace impedance.
TX1+/TX1−, TX2+/TX2− (Pins 11, 12, 22, 23)	Differential outputs (Ch1 & Ch2)	AC-coupled via 100 nF X7R capacitors; deliver programmable amplitude (640–1270 mV_P-P) with 72–120 Ω differential output impedance for clean transmission into 50 Ω loads.
ENRXD (Pin 5)	Active-high enable control	Internal 400 kΩ pull-up to VCC; drives device into standby (<1 mW) when pulled low; rising edge initiates receiver detection sequence.
EQ1/EQ2 (Pins 2, 17)	Three-state equalization control	High-impedance, 0 V, or VCC selection sets 0 dB / 6 dB / 10 dB input boost per channel - no external resistors required for default (N.C.) state.
DE1/DE2, OS1/OS2 (Pins 3, 4, 15, 16)	Deemphasis and amplitude control	OSx selects transition-bit amplitude level; DEx selects nontransition-bit amplitude and fine-tunes transition-bit deemphasis - six combined states per channel.
GND (Pins 6, 10, 18, 21)	Ground reference	Four dedicated GND pins reduce ground bounce; exposed pad (EP) must be soldered to solid PCB ground plane for thermal and EMI performance.

Key Features

Feature	Design Value
USB 3.0 LFPS support with squelch	Enables reliable low-power link training: detects idle LFPS (≤100 mV_P-P), squelches output, and re-enables redrive within 4 ns upon valid LFPS (>300 mV_P-P).
Four-tier power management	Delivers <1 mW standby, 23 mW receiver detect, 82.5 mW dynamic power-down, and 304 mW active operation - optimized for always-on industrial USB ports.
Industrial temperature range	Guaranteed operation from -40°C to +85°C - validated for deployment in medical equipment, test gear, and rack-mounted servers without derating.
Flow-through TQFN layout	Minimizes signal path discontinuities: RX and TX pins are arranged linearly (e.g., RX1+, RX1−, TX1+, TX1−) to allow straight, length-matched routing without vias or stubs.
Integrated receiver detection	Per-channel autonomous detection every 12 ms (typ); requires valid termination on both channels to exit low-power mode - eliminates need for external presence sensing.

Applications

Industrial Embedded PC	Computer on Module (COM)
Use Scenario: Extending USB 3.0 traces from COM baseboard to rear-panel I/O connectors over >150 mm FR4. IC Role / Device Role / Timing Role: Dual-channel redriver restoring signal integrity across lossy midplane connections while maintaining USB 3.0 timing budgets. Use Value: Enables full 5 Gbps throughput without retiming or protocol translation; deterministic jitter remains ≤12 ps_P-P after 30-inch equivalent channel loss.	Use Scenario: Routing USB 3.0 signals from a compact COM to carrier board peripherals with mixed-length traces and connector transitions. IC Role / Device Role / Timing Role: Channel-specific equalization and deemphasis corrects asymmetric loss between host-side and device-side paths. Use Value: Eliminates need for custom trace tuning or higher-cost controlled-impedance substrates; supports drop-in integration into existing COM form factors.
Rack Server Backplane	Medical Diagnostic Equipment
Use Scenario: Driving USB 3.0 signals from motherboard to hot-swap I/O modules through backplane connectors and flex cables. IC Role / Device Role / Timing Role: Redriver placed at module edge to compensate for cumulative connector/cable loss and maintain eye margin at receiver. Use Value: Achieves 304 mW active power at full data rate while sustaining -40°C to +85°C operation - critical for fanless or thermally constrained server enclosures.	Use Scenario: Connecting high-bandwidth imaging sensors (e.g., ultrasound probes) to processing units via shielded USB 3.0 cables in EMI-sensitive clinical environments. IC Role / Device Role / Timing Role: Dual redriver ensures deterministic jitter ≤12 ps_P-P and ±8 kV HBM protection on all pins for patient-safe peripheral interfacing. Use Value: Maintains signal fidelity over 2-meter cables without introducing bit errors; supports uninterrupted acquisition during LFPS-based link power state transitions.

Industrial Embedded PC

Computer on Module (COM)

Use Scenario: Extending USB 3.0 traces from COM baseboard to rear-panel I/O connectors over >150 mm FR4.

IC Role / Device Role / Timing Role: Dual-channel redriver restoring signal integrity across lossy midplane connections while maintaining USB 3.0 timing budgets.

Use Value: Enables full 5 Gbps throughput without retiming or protocol translation; deterministic jitter remains ≤12 ps_P-P after 30-inch equivalent channel loss.

Use Scenario: Routing USB 3.0 signals from a compact COM to carrier board peripherals with mixed-length traces and connector transitions.

IC Role / Device Role / Timing Role: Channel-specific equalization and deemphasis corrects asymmetric loss between host-side and device-side paths.

Use Value: Eliminates need for custom trace tuning or higher-cost controlled-impedance substrates; supports drop-in integration into existing COM form factors.

Rack Server Backplane

Medical Diagnostic Equipment

Use Scenario: Driving USB 3.0 signals from motherboard to hot-swap I/O modules through backplane connectors and flex cables.

IC Role / Device Role / Timing Role: Redriver placed at module edge to compensate for cumulative connector/cable loss and maintain eye margin at receiver.

Use Value: Achieves 304 mW active power at full data rate while sustaining -40°C to +85°C operation - critical for fanless or thermally constrained server enclosures.

Use Scenario: Connecting high-bandwidth imaging sensors (e.g., ultrasound probes) to processing units via shielded USB 3.0 cables in EMI-sensitive clinical environments.

IC Role / Device Role / Timing Role: Dual redriver ensures deterministic jitter ≤12 ps_P-P and ±8 kV HBM protection on all pins for patient-safe peripheral interfacing.

Use Value: Maintains signal fidelity over 2-meter cables without introducing bit errors; supports uninterrupted acquisition during LFPS-based link power state transitions.

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB 3.0 redriver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TI TUSB211IRWBR	Single-channel, 5 Gbps redriver; no programmable equalization; fixed 3.3 V supply; only 12-pin WQFN package.	Limited to single-lane extension; lacks receiver detection and LFPS squelch - unsuitable for multi-port or low-power industrial designs.	Select only for cost-sensitive, space-constrained single-link applications where dynamic power management is unnecessary.
Diodes AP133A	Dual-channel USB 3.0 redriver with 6 dB max equalization and 3 dB max deemphasis; 2.5 V to 3.6 V supply; -40°C to +85°C rating.	Lower equalization headroom (6 dB vs. 10 dB); higher active current (380 mA vs. 125 mA); no explicit LFPS idle detection or squelch behavior documented.	Consider when lower channel loss compensation suffices and supply voltage flexibility below 3.0 V is required; verify LFPS timing compliance separately.

Compared with TI TUSB211IRWBR and Diodes AP133A, the MAX14975ETG+ uniquely combines dual-channel operation, 10 dB equalization, USB 3.0 LFPS squelch, and sub-1 mW standby - making it the only option qualified for extended-temperature, low-jitter, multi-port industrial USB 3.0 links requiring autonomous power-state transitions.

Availability

MAX14975ETG+ is available at Aetrix Electronics and suitable for industrial embedded PCs, computer-on-module carrier boards, and rack-server backplanes requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX14975ETG+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Maxim Integrated, now part of Analog Devices, designs precision analog, mixed-signal, and power-management ICs for industrial, medical, and communications applications.

The MAX14975ETG+ belongs to Maxim's high-speed interface redriver product line, engineered specifically for USB 3.0 signal integrity restoration in harsh, thermally demanding environments where reliability and low-power operation are mandatory.

FAQ

What is the maximum channel loss the MAX14975ETG+ can compensate?

The MAX14975ETG+ compensates up to 30 inches of FR4 trace loss at 5 Gbps while maintaining deterministic jitter ≤12 ps_P-P and random jitter ≤1 ps_RMS. This capability is achieved using its three-level input equalization (0/6/10 dB) and six-level output deemphasis (0/2.2/2.5/2.7/3.0/3.3/3.9 dB), verified under USB 3.0 K28.5 and D10.2 patterns. The MAX14975ETG+ does not specify compensation for PCIe or SATA protocols.

Does the MAX14975ETG+ support USB 3.1 or USB 3.2 Gen2 (10 Gbps)?

No, the MAX14975ETG+ is specified exclusively for USB 3.0 SuperSpeed operation at 5 Gbps. Its electrical characteristics - including return loss (≥13 dB up to 1.25 GHz), jitter limits, and equalization/deemphasis ranges - are validated only at 5 Gbps and do not extend to 10 Gbps signaling. The MAX14975ETG+ is not interoperable with USB 3.1/3.2 Gen2 transceivers or compliance test fixtures.

How does the MAX14975ETG+ handle USB 3.0 LFPS signals during low-power states?

The MAX14975ETG+ explicitly supports USB 3.0 LFPS in all operational states: it detects LFPS idle (≤100 mV_P-P) and squelches output within 4 ns, then re-enables redrive within 4 ns upon detecting active LFPS (>300 mV_P-P). In receiver detect and dynamic power-down states, LFPS detection remains active, ensuring seamless link training without host intervention. This behavior is confirmed in the MAX14975ETG+ datasheet Figure 1 and Table 5.

What is the recommended power-supply decoupling for the MAX14975ETG+?

Each VCC pin (Pins 1 and 13) requires parallel decoupling with a 0.1 µF X7R ceramic capacitor and a 2.2 µF low-ESR tantalum or polymer capacitor, placed within 2 mm of the pin and connected directly to adjacent GND pins. The exposed pad (EP) must be soldered to a solid ground plane to achieve the specified θ_JA = 36°C/W and prevent thermal shutdown during sustained 304 mW active operation.

Is the MAX14975ETG+ pin-compatible with other Maxim USB redrivers like the MAX14974?

No, the MAX14975ETG+ is not pin-compatible with the MAX14974 or any other Maxim redriver. The MAX14975ETG+ uses a unique 24-pin TQFN layout with dedicated EQ_/DE_/OS_/ENRXD control pins per channel and four GND pins, whereas the MAX14974 is a 16-pin TQFN device with different pin assignments and no per-channel equalization controls. Board redesign is required for substitution.

MAX14975ETG+ Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc./Maxim Integrated

Series:: -

Package/Case:: 24-WFQFN Exposed Pad

Packaging:: Bulk

Product Status:: Active

Applications:: Test Equipment

Interface:: -

Voltage - Supply:: 3V ~ 3.6V

Supplier Device Package:: 24-TQFN-EP (4x4)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

MAX14975ETG+ FAQ

1.How can I place an order for MAX14975ETG+ through Aetrix?

Please submit a Request for Quotation (RFQ) for MAX14975ETG+ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for MAX14975ETG+ reliable?

The price and inventory of MAX14975ETG+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14975ETG+ is usually 5 days.

3.What payment methods are accepted for MAX14975ETG+?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14975ETG+ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MAX14975ETG+?

MAX14975ETG+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MAX14975ETG+ order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for MAX14975ETG+?

For technical support, including MAX14975ETG+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14975ETG+ requirements.

6.How does Aetrix verify that MAX14975ETG+ is sourced from the original manufacturer or authorized distributors?

All MAX14975ETG+ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX14975ETG+ meets industry standards.

7.What is the process for return or replacement of MAX14975ETG+?

All MAX14975ETG+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX14975ETG+, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The MAX14975ETG+ part is unused and in its original packaging.

Return procedure for MAX14975ETG+:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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