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Analog Devices Inc./Maxim Integrated MAX3208EAUB+
- Part No.:
- MAX3208EAUB+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- TVS Diodes
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX3208EAUB+.pdf
- Description:
- TVS DIODE 10UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:2,184
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Product details
Overview
MAX3208EAUB+ from Maxim Integrated is a four-channel, low-capacitance ESD protection diode array with integrated TVS clamp, designed for high-speed differential signal lines in FireWire and Ethernet interfaces. It delivers ±15kV HBM / ±8kV IEC 61000-4-2 contact / ±15kV air-gap ESD protection, 2.6pF typical channel capacitance (VCC = +3.3V), ±0.05pF channel-to-channel capacitance variation, and operates across –40°C to +125°C.
For engineers reviewing the MAX3208EAUB+ datasheet, MAX3208EAUB+ pinout, MAX3208EAUB+ application, or MAX3208EAUB+ equivalent, this device is selected for high-speed serial interface protection where minimal signal distortion, tight capacitance matching, and automotive-grade reliability are required - especially in FireWire IEEE 1394 and 10/100BASE-TX Ethernet front-end circuits.
Technical Context
The MAX3208EAUB+ implements a dual-diode per channel architecture that steers ESD current to VCC or GND, with an integrated TVS to clamp VCC excursions during transients. Its optimized µMAX pinout minimizes stub inductance on controlled-impedance differential traces.
It is specified for operation at VCC = 0.9V to 5.5V, draws only 1–100nA supply current, and achieves channel clamp voltages of VCC + 25V (HBM), VCC + 60V (IEC contact), and VCC + 100V (IEC air-gap) under defined test conditions - all while maintaining sub-3pF input capacitance and <±0.05pF inter-channel mismatch.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Rating | ±15kV HBM, ±8kV IEC 61000-4-2 contact, ±15kV air-gap - meets Level 4 immunity for industrial and automotive end equipment. |
| Channel Capacitance | 2.6pF typical (VCC = +3.3V, bias = VCC/2) - preserves signal integrity on >400Mbps differential links like FireWire and Fast Ethernet. |
| Capacitance Variation | ±0.05pF channel-to-channel - ensures matched propagation delay and common-mode rejection in differential pairs. |
| Clamp Voltage (IEC Air-Gap) | VC = VCC + 100V (IF = 45A) - defines maximum transient overvoltage seen by downstream PHY ICs. |
| Supply Range | VCC = 0.9V to 5.5V - supports legacy 3.3V and modern low-voltage I/O domains without level-shifting. |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive, industrial control, and set-top box applications. |
| Leakage Current | ±0.1μA max (I/O to GND) - prevents DC loading of high-impedance signal sources such as HDMI/DVI receiver inputs. |
Pinout & Package
MAX3208EAUB+ is housed in a 10-pin µMAX package (3.0mm × 3.0mm × 1.1mm), RoHS-compliant, with exposed pad connected to GND for thermal and ESD return path integrity.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | I/O1 | ESD-protected signal input/output - first differential pair leg (e.g., FireWire TPB+ or ETH TX+). |
| 2 | GND | Low-inductance ground reference - must be connected directly to solid ground plane for effective ESD shunting. |
| 3 | N.C. | No internal connection - floating terminal; no PCB trace or solder mask opening required. |
| 4 | I/O2 | ESD-protected signal input/output - second leg of first differential pair (e.g., FireWire TPB– or ETH TX–). |
| 5 | N.C. | No internal connection - floating terminal; avoid routing or stitching vias. |
| 6 | I/O3 | ESD-protected signal input/output - first leg of second differential pair (e.g., FireWire TPA+ or ETH RX+). |
| 7 | VCC | TVS clamp power rail - requires local 0.1μF ceramic bypass capacitor to GND for optimal clamping performance. |
| 8 | I/O4 | ESD-protected signal input/output - second leg of second differential pair (e.g., FireWire TPA– or ETH RX–). |
| 9 | N.C. | No internal connection - floating terminal; maintain clearance from adjacent traces. |
| 10 | N.C. | No internal connection - floating terminal; no electrical function. |
Key Features
| Feature | Design Value |
|---|---|
| Low input capacitance | 2.6pF typical per channel - enables use on 400Mbps FireWire and 100Mbps Ethernet without measurable rise-time degradation. |
| Tight capacitance matching | ±0.05pF I/O-to-I/O variation - maintains differential skew <0.5ps, critical for eye diagram compliance in high-speed serial links. |
| Integrated TVS clamp | Clamps VCC excursions to known voltage during ESD - reduces need for external bulk capacitance and improves system-level surge resilience. |
| Optimized µMAX pinout | Alternating I/O/GND/VCC layout - minimizes stub length and loop area for differential pairs routed side-by-side on PCB. |
| Automotive temperature range | –40°C to +125°C operation - supports deployment in infotainment head units, gateway modules, and industrial Ethernet switches. |
Applications
| FireWire IEEE 1394 Interface Protection | Ethernet 10/100BASE-TX Port Protection |
|---|---|
|
Use Scenario: Protecting FireWire physical layer transceivers (e.g., TSB41AB2) against connector-based ESD events in digital camcorders and AV receivers. IC Role / Device Role / Timing Role: Front-end ESD suppressor placed between connector and PHY IC, clamping transients before they reach sensitive analog front-end circuitry. Use Value: Maintains 400Mbps data integrity with <2.7pF loading and ±0.05pF channel match - preserving differential timing margin required by OHCI-compliant link layers. |
Use Scenario: Shielding 10/100BASE-TX magnetics and PHY pins (e.g., DP83848) from ESD in networked kiosks and factory-floor HMIs. IC Role / Device Role / Timing Role: Signal-line protector on transformer-coupled TX+/TX– and RX+/RX– pairs, referenced to local VCC and chassis GND. Use Value: Enables full IEC 61000-4-2 Level 4 compliance (±8kV contact) without degrading NEXT/FEXT margins due to ultra-low, matched capacitance. |
| DVI/HDMI Source Port Protection | Industrial USB 2.0 Peripheral Protection |
|
Use Scenario: Safeguarding DVI transmitter outputs (e.g., THS8200) on graphics controller cards used in medical imaging displays. IC Role / Device Role / Timing Role: Single-ended ESD guard on TMDS clock and data channels, leveraging low capacitance to preserve 165MHz pixel clock edge fidelity. Use Value: Delivers 2.6pF loading per channel with <0.05pF mismatch - preventing skew-induced jitter accumulation across multi-lane TMDS links. |
Use Scenario: Hardening USB 2.0 upstream ports on programmable logic controllers (PLCs) exposed to maintenance technician ESD in manufacturing cells. IC Role / Device Role / Timing Role: Four-channel protector covering D+, D–, VBUS, and ID lines - using dedicated I/O paths and shared VCC/GND rails. Use Value: Supports full-speed (12Mbps) and high-speed (480Mbps) signaling integrity while meeting automotive-grade thermal cycling requirements (–40°C to +125°C). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD2E001DRYR | Two-channel, 1.5pF typical capacitance, SOT-5X3 package, no integrated VCC TVS - relies on system-level clamping. | Targeted at space-constrained USB 2.0 data lines; lacks four-channel integration and VCC-clamp functionality. | Select when board-level VCC clamping already exists and only two lines require protection with ultra-low capacitance. |
| SZP6S235T1G | Four-channel, 3.5pF typical capacitance, SOT-23-6 package, ±12kV HBM rating, no VCC TVS - higher capacitance, lower ESD rating. | Used in cost-sensitive consumer audio docks; not qualified for automotive temperature range or IEC 61000-4-2 Level 4. | Choose only for non-automotive, non-industrial designs where 3.5pF loading and ±12kV HBM are acceptable trade-offs for lower unit cost. |
Compared with TPD2E001DRYR and SZP6S235T1G, MAX3208EAUB+ uniquely combines four-channel integration, 2.6pF capacitance, ±15kV IEC air-gap rating, integrated VCC TVS, and automotive temperature qualification - making it the only option among the three suitable for high-reliability FireWire and Ethernet front-end protection.
Availability
MAX3208EAUB+ is available at Aetrix Electronics and suitable for FireWire interface protection, Ethernet port hardening, DVI source shielding, and industrial USB 2.0 peripheral designs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX3208EAUB+ 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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and communications markets.
The MAX3205E/MAX3207E/MAX3208E family was engineered specifically for high-speed serial interface ESD protection - balancing ultra-low capacitance, precise channel matching, and robust transient clamping in compact packages for next-generation connectivity systems.
FAQ
What is the exact channel count and I/O configuration of MAX3208EAUB+?
MAX3208EAUB+ is a four-channel ESD protection device, with independent I/O_ pins at positions 1 (I/O1), 4 (I/O2), 6 (I/O3), and 8 (I/O4) in its 10-pin µMAX package. Each channel consists of a diode pair steering ESD current to VCC or GND. Pins 3, 5, 9, and 10 are no-connect terminals, and Pin 2 is GND while Pin 7 is VCC. This configuration matches FireWire's two differential pairs or Ethernet's TX/RX lanes.
Does MAX3208EAUB+ require an external TVS or additional clamping components?
No, MAX3208EAUB+ integrates a transient voltage suppressor (TVS) that clamps VCC during ESD events to a known voltage - eliminating the need for external TVS diodes. However, a 0.1μF ceramic capacitor must be placed between Pin 7 (VCC) and Pin 2 (GND) as close as possible to the MAX3208EAUB+ to ensure effective clamping and minimize parasitic inductance effects on the VCC rail.
What is the measured input capacitance of MAX3208EAUB+ and how is it validated?
MAX3208EAUB+ has a typical input capacitance of 2.6pF per channel, measured at VCC = +3.3V with bias at VCC/2, as confirmed in the Electrical Characteristics table of the official datasheet (Rev 3, July 2010). This value is production-tested across temperature and represents the actual load presented to high-speed signals - critical for maintaining signal integrity on FireWire and Fast Ethernet links.
Can MAX3208EAUB+ be used in USB 2.0 high-speed (480Mbps) applications?
Yes, MAX3208EAUB+ is suitable for USB 2.0 high-speed applications, as explicitly stated in Maxim's Applications section for the MAX3207E/MAX3208E family. Its 2.6pF channel capacitance and ±0.05pF matching meet the stringent impedance and timing requirements of 480Mbps differential signaling - though layout must follow recommended practices (short traces, local bypassing) to preserve eye diagram compliance.
Is MAX3208EAUB+ qualified for automotive applications and what standards does it meet?
Yes, MAX3208EAUB+ is fully qualified for automotive applications, with a guaranteed operating temperature range of –40°C to +125°C. It meets IEC 61000-4-2 Level 4 (±8kV contact, ±15kV air-gap) and JEDEC JS-001 Human Body Model (±15kV), making it appropriate for infotainment systems, ADAS gateways, and vehicle networking modules where ESD robustness and thermal reliability are mandatory.
MAX3208EAUB+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- -
- Voltage - Breakdown (Min):
- -
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- -
- Power Line Protection:
- Yes
- Applications:
- Ethernet
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-uMAX/uSOP
MAX3208EAUB+ FAQ
1.How can I place an order for MAX3208EAUB+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX3208EAUB+ 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 MAX3208EAUB+ reliable?
The price and inventory of MAX3208EAUB+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX3208EAUB+ is usually 5 days.
3.What payment methods are accepted for MAX3208EAUB+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX3208EAUB+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX3208EAUB+?
MAX3208EAUB+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX3208EAUB+ 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 MAX3208EAUB+?
For technical support, including MAX3208EAUB+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX3208EAUB+ requirements.
6.How does Aetrix verify that MAX3208EAUB+ is sourced from the original manufacturer or authorized distributors?
All MAX3208EAUB+ 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 MAX3208EAUB+ meets industry standards.
7.What is the process for return or replacement of MAX3208EAUB+?
All MAX3208EAUB+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX3208EAUB+, 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 MAX3208EAUB+ part is unused and in its original packaging.
Return procedure for MAX3208EAUB+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX3208EAUB+ Tags
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