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Analog Devices Inc./Maxim Integrated MAX3784UTE+
- Part No.:
- MAX3784UTE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Specialized
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
MAX3784UTE+.pdf
- Description:
- IC INTERFACE SPECIALIZED 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,855
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Product details
Overview
MAX3784UTE+ from Maxim Integrated is a 5Gbps PCB equalizer IC designed to compensate for FR-4 transmission losses up to 40 inches, featuring differential CML I/O, 185mW power consumption at +3.3V, 0.18UI deterministic jitter at 5Gbps/40in, and standby mode control via EN pin. It targets backplane signal integrity in 4×1.25Gbps Ethernet and 4.25Gbps Fibre Channel systems.
For engineers reviewing the MAX3784UTE+ datasheet, MAX3784UTE+ pinout, MAX3784UTE+ application, or MAX3784UTE+ equivalent, key selection criteria include deterministic jitter performance at 5Gbps over FR-4, CML interface compatibility, thermal management of the exposed-pad TQFN package, and enable-controlled low-power operation in chassis life extension designs.
Technical Context
The MAX3784UTE+ implements an adaptive equalization control loop that detects input spectral content to dynamically adjust compensation for frequency-dependent media loss. Its limiting output driver delivers controlled CML swing (400–600mVP-P) into 100Ω differential loads.
It operates exclusively with NRZ, 8b10b, or short CID data types and requires AC coupling when interfacing with lower common-mode voltage devices. Latency is fixed at 200ps with no temperature dependence above ±10ps across 0°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 5Gbps nominal; supports 1.25Gbps and 2.5Gbps with verified jitter performance |
| Deterministic Jitter | 0.18UIP-P max at 5Gbps over 40in FR-4 - directly enables reliable eye opening in long backplane traces |
| Supply Power | 185mW typical at +3.3V - enables thermal management in dense line-card layouts without forced air |
| Input Swing Range | 400–1000mVP-P differential - accommodates wide amplitude variation from upstream drivers |
| Latency | 200ps fixed - ensures deterministic timing alignment in synchronous multi-channel systems |
| Enable Control | EN pin logic-high = active; logic-low = standby (30mW) - allows dynamic power gating per channel |
| Return Loss | ≥15dB from 100MHz to 2.5GHz - minimizes reflections on high-speed differential pairs |
Pinout & Package
The MAX3784UTE+ is housed in a 4mm × 4mm, 16-pin TQFN-EP package with exposed pad soldered to ground for thermal and electrical integrity. Pin 13 (EN) controls standby mode; pins 1, 7, 12 supply +3.3V; pins 4, 6, 9 are ground; pins 2/3 and 10/11 form differential CML input/output pairs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 12 | VCC | +3.3V supply inputs - require local 0.1µF decoupling each to minimize high-frequency noise coupling |
| 2 | IN+ | Positive CML input - must be AC-coupled when interfacing with sub-2.5V common-mode devices |
| 3 | IN- | Negative CML input - forms 100Ω differential pair with IN+; impedance-matched routing required |
| 4, 6, 9 | GND | Supply ground terminals - connect directly to solid ground plane under exposed pad |
| 10 | OUT- | Negative CML output - matched to OUT+ for 100Ω differential termination at receiver |
| 11 | OUT+ | Positive CML output - delivers 400–600mVP-P swing into 100Ω load |
| 13 | EN | Enable control - open or high = active; low = standby (30mW); no pull-up required (40kΩ internal) |
| 5, 8, 14–16 | N.C. | No connection - must remain unconnected and unstubbed to avoid parasitic resonance |
| EP | Exposed Pad | Thermal/electrical ground - mandatory solder connection to PCB ground plane for <10°C/W θJA |
Key Features
| Feature | Design Value |
|---|---|
| 40-inch FR-4 reach | Enables reuse of legacy backplane infrastructure without trace redesign or layer count increase |
| Adaptive equalization loop | Automatically adjusts gain vs. frequency based on real-time input spectrum - no external configuration needed |
| 200ps fixed latency | Eliminates timing skew calibration in multi-lane parallel interfaces like Fibre Channel 4x |
| 185mW active power | Permits integration of ≥8 channels per 1U line card without exceeding 15W thermal envelope |
| Standby mode (30mW) | Reduces total system power by >80% during link idle periods in Ethernet switch fabric applications |
Applications
| 4.25Gbps Fibre Channel | 4×1.25Gbps Ethernet Multiplexing |
|---|---|
Use Scenario: High-availability storage area network (SAN) switches connecting disk arrays over 40in FR-4 backplanes. IC Role / Device Role / Timing Role: PCB equalizer placed between backplane connector and SERDES PHY to restore signal integrity degraded by dielectric loss. Use Value: Enables full 4.25Gbps FC-AL compliance without upgrading to expensive low-loss laminates or adding repeaters. |
Use Scenario: Carrier-grade Ethernet aggregation chassis using 4-lane 1.25Gbps lanes multiplexed to 5Gbps aggregate bandwidth. IC Role / Device Role / Timing Role: Per-lane equalizer on line card, compensating for unequal trace lengths and via stubs in multi-gigabit routing. Use Value: Achieves <0.21UI deterministic jitter at 5Gbps, meeting IEEE 802.3ae XAUI jitter budget for interoperability. |
| Chassis Life Extension | High-Density Line Cards |
Use Scenario: Retrofitting legacy telecom chassis with modern 5Gbps modules while retaining existing FR-4 backplanes. IC Role / Device Role / Timing Role: Signal conditioner inserted at mid-board to extend usable trace length beyond original design limits. Use Value: Defers $2M+ backplane replacement cost by enabling 5Gbps operation on 10-year-old infrastructure. |
Use Scenario: 32-port 10GbE line cards with 8× 4-lane SerDes groups sharing a single backplane. IC Role / Device Role / Timing Role: Per-lane equalizer minimizing crosstalk-induced jitter in tightly spaced TQFN layouts. Use Value: Maintains 10−12 BER at 5Gbps with 0.18UI jitter margin, supporting 24/7 carrier-class uptime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PCB equalizer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX3784AUTE+ | Higher output swing (550–750mVP-P) and improved jitter (0.13UI at 5Gbps/40in) due to enhanced equalizer core | Better suited for longer traces (>30in) or higher-loss FR-4 batches; requires same layout and biasing | Select MAX3784AUTE+ when deterministic jitter budget is ≤0.15UI or output drive margin is critical |
| DS10BR150TSD/NOPB | Fixed-gain 5Gbps equalizer (no adaptation), 250mW power, 0.25UI jitter at 40in, 20-pin WQFN | Lacks adaptive response to varying media loss; requires manual gain tuning per board variant | Choose DS10BR150TSD/NOPB only if cost sensitivity outweighs jitter margin requirements and design resources exist for per-board calibration |
Compared with MAX3784UTE+, MAX3784AUTE+ delivers tighter jitter control for marginal FR-4 lots, while DS10BR150TSD/NOPB trades adaptability for lower unit cost but increases validation effort across PCB revisions.
Availability
MAX3784UTE+ is available at Aetrix Electronics and suitable for 4.25Gbps Fibre Channel, 4×1.25Gbps Ethernet multiplexing, and chassis life extension applications requiring stable component supply across extended product lifecycles.
Supply support for MAX3784UTE+ 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 high-speed interconnect ICs for industrial, communications, and computing markets.
The MAX3784UTE+ belongs to Maxim's high-speed signal conditioning product line, engineered specifically to extend reach and improve jitter tolerance in FR-4-based backplane and mid-board interconnects.
FAQ
What is the operating temperature range for the MAX3784UTE+?
The MAX3784UTE+ is specified for operation from 0°C to +85°C ambient temperature. Its latency remains stable within ±10ps across this range, and supply current varies less than 15% from 25°C to 85°C. The exposed pad must be soldered to ground to maintain thermal resistance below 10°C/W, ensuring reliable operation at maximum junction temperature.
Does the MAX3784UTE+ require external configuration or programming?
No, the MAX3784UTE+ operates autonomously with no external configuration required. Its adaptive equalization loop self-adjusts gain versus frequency based on real-time input signal spectrum. Only the EN pin needs to be driven high (or left open) for normal operation; no I²C, SPI, or resistor networks are needed.
Can the MAX3784UTE+ be used with non-8b10b data encodings?
The MAX3784UTE+ is optimized for DC-balanced codes like 8b10b and short CID patterns (≤20 bits), but it functions with NRZ signaling. Performance is not guaranteed for highly unbalanced or long-run-length codes, as the adaptive loop relies on spectral content for convergence. For non-standard encodings, jitter testing at target line length is recommended.
What is the purpose of the exposed pad on the MAX3784UTE+ package?
The exposed pad on the MAX3784UTE+ TQFN package must be soldered to the PCB ground plane to ensure both thermal dissipation (keeping junction temperature within spec at 185mW) and electrical stability (reducing ground inductance for CML I/O). Failure to connect it results in thermal shutdown risk and increased deterministic jitter due to ground bounce.
How does standby mode affect the MAX3784UTE+ output state?
When EN is pulled low, the MAX3784UTE+ enters standby mode drawing only 30mW and disables its output driver - OUT+ and OUT- enter high-impedance state. This prevents signal contention on shared backplane traces and eliminates DC loading on downstream receivers, making it ideal for hot-swap and link power management.
MAX3784UTE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-WQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- Applications:
- Data Transport
- Interface:
- -
- Voltage - Supply:
- 3V ~ 3.6V
- Supplier Device Package:
- 16-TQFN (4x4)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
MAX3784UTE+ FAQ
1.How can I place an order for MAX3784UTE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX3784UTE+ 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 MAX3784UTE+ reliable?
The price and inventory of MAX3784UTE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX3784UTE+ is usually 5 days.
3.What payment methods are accepted for MAX3784UTE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX3784UTE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX3784UTE+?
MAX3784UTE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX3784UTE+ 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 MAX3784UTE+?
For technical support, including MAX3784UTE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX3784UTE+ requirements.
6.How does Aetrix verify that MAX3784UTE+ is sourced from the original manufacturer or authorized distributors?
All MAX3784UTE+ 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 MAX3784UTE+ meets industry standards.
7.What is the process for return or replacement of MAX3784UTE+?
All MAX3784UTE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX3784UTE+, 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 MAX3784UTE+ part is unused and in its original packaging.
Return procedure for MAX3784UTE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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