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Analog Devices Inc./Maxim Integrated MAX3208EATE+T
- Part No.:
- MAX3208EATE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- TVS Diodes
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
MAX3208EATE+T.pdf
- Description:
- TVS DIODE 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:7,342
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Product details
Overview
MAX3208EATE+T 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, features 2.7pF 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 MAX3208EATE+T datasheet, MAX3208EATE+T pinout, MAX3208EATE+T application, or MAX3208EATE+T equivalent, key selection criteria include channel count (4), ultra-low capacitance stability, automotive-grade temperature range, integrated VCC-clamp functionality, and TQFN-EP package compatibility with controlled-impedance routing.
Technical Context
The MAX3208EATE+T implements a dual-diode per channel architecture that steers ESD current to either VCC or GND, enabling bidirectional clamping. Its integrated TVS suppressor actively limits VCC rail voltage excursion during transients, reducing sensitivity to PCB parasitic inductance.
Each channel maintains tight capacitance matching (±0.05pF I/O-to-I/O variation) and supports high-speed single-ended or differential signaling up to 480Mbps (USB 2.0) and FireWire IEEE 1394. The device is specified for operation with VCC between 0.9V and 5.5V and exhibits only 100nA typical supply current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Protection Level | ±15kV HBM, ±8kV IEC 61000-4-2 contact, ±15kV air-gap - meets Level 4 immunity for industrial and automotive end equipment. |
| Channel I/O Capacitance | 2.7pF typical at VCC = +3.3V - preserves signal integrity on HDMI, DVI, and FireWire differential pairs without degrading rise time. |
| Capacitance Variation | ±0.05pF channel-to-channel - ensures matched propagation delay critical for differential pair skew control. |
| Clamp Voltage (IEC Air-Gap) | +100V / –100V at 45A - defines maximum transient overvoltage imposed on protected ICs during worst-case ESD events. |
| Supply Voltage Range | 0.9V to 5.5V - supports interface protection across legacy 3.3V and modern low-voltage I/O domains including USB 3.3V logic. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, industrial control, and set-top box applications. |
| Leakage Current | ±0.1μA max at TA = +25°C - prevents signal degradation or bias shift in high-impedance analog or digital input paths. |
Pinout & Package
MAX3208EATE+T is housed in a 16-pin, 3mm × 3mm thin quad flat no-lead package with exposed pad (TQFN-EP), optimized for thermal dissipation and low-inductance grounding.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 6, 8, 9, 11, 13, 14, 16 | N.C. | No internal connection; solder balls omitted - reduces parasitic coupling and simplifies PCB layout. |
| 2 | GND | Primary ground return path for ESD current; must connect directly to low-impedance ground plane via exposed pad. |
| 4, 7, 12, 15 | I/O_ | Four independent ESD-protected signal channels; each accepts bidirectional transients and routes current to GND or VCC. |
| 10 | VCC | Clamp-supply rail; requires local 0.1μF ceramic bypass capacitor to limit VCC rail overshoot during positive ESD pulses. |
| EP | Exposed Pad | Thermal and electrical ground tie; must be soldered to solid ground plane to ensure effective ESD current shunting and thermal stability. |
Key Features
| Feature | Design Value |
|---|---|
| Low input capacitance | 2.7pF typical per channel - enables use on >480Mbps USB 2.0 and FireWire 400/800 differential links without signal distortion. |
| Tight capacitance matching | 0.05pF max I/O-to-I/O variation - minimizes differential skew and common-mode noise in high-speed serial interfaces. |
| Integrated TVS clamp | Clamps VCC to known voltage during ESD - reduces dependency on system-level power rail impedance and improves robustness. |
| Optimized pinout | Adjacent I/O pins placed opposite GND/VCC - enables symmetric trace routing and minimizes stub inductance on controlled-impedance lines. |
| Automotive temperature range | –40°C to +125°C operation - supports deployment in infotainment, ADAS camera links, and industrial Ethernet nodes. |
Applications
| FireWire IEEE 1394 Interface Protection | Ethernet PHY Line Protection |
|---|---|
|
Use Scenario: Protecting FireWire 400/800 data lanes (TPA+/TPA–, TPB+/TPB–) on laptop docking stations and external storage enclosures against user-handling ESD. IC Role / Device Role / Timing Role: Four-channel bidirectional ESD clamp placed immediately adjacent to connector, routing transients to local VCC/GND. Use Value: Maintains <1% signal attenuation at 400MHz while surviving repeated ±15kV air-gap discharges - eliminates field failures in consumer portable gear. |
Use Scenario: Shielding 10/100BASE-TX differential pairs (MDI/MDI-X) in industrial Ethernet switches exposed to factory-floor ESD events. IC Role / Device Role / Timing Role: Per-lane ESD suppression with matched capacitance to preserve 100MHz Ethernet eye diagram integrity. Use Value: 0.05pF channel matching ensures <5ps inter-pair skew, preventing receiver jitter accumulation in multi-port switch ASICs. |
| DVI/HDMI Source Port Protection | Set-Top Box USB 2.0 Hub Protection |
|
Use Scenario: Safeguarding DVI-D TMDS clock and data channels (CLK+, CLK–, DATA0+, DATA0–, etc.) on AV receivers and media players. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor placed before HDMI/DVI level-shifters and equalizers. Use Value: 2.7pF loading avoids degrading 1.65Gbps TMDS eye opening - passes HDMI compliance testing with margin. |
Use Scenario: Adding secondary ESD protection to USB 2.0 upstream/downstream ports on cable-ready set-top boxes with front-panel USB hosts. IC Role / Device Role / Timing Role: Four-channel guard for D+/D–, VBUS, and ID lines in USB OTG configurations requiring reversible insertion robustness. Use Value: Dual-diode topology handles both hot-plug and static discharge modes - extends field life of consumer CE devices beyond 5-year warranty period. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SP3208-01UTG | 4-channel, 0.6pF lower capacitance (2.1pF), no integrated VCC clamp, uses external TVS for rail protection. | Requires additional board space and layout coordination for external TVS; better suited for ultra-high-speed (>1Gbps) SerDes where sub-2pF is mandatory. | Select SP3208-01UTG only when MAX3208EATE+T's 2.7pF exceeds signal integrity budget and system-level VCC clamping can be implemented externally. |
| TPD4E001DQAR | 4-channel, 2.5pF typical capacitance, ±12kV HBM rating, no IEC 61000-4-2 certification data published. | Lacks documented IEC 61000-4-2 Level 4 validation; suitable for cost-sensitive consumer electronics but not automotive or industrial certifications. | Choose TPD4E001DQAR for non-certified USB peripherals where BOM cost reduction outweighs need for full IEC compliance evidence. |
Compared with SP3208-01UTG and TPD4E001DQAR, MAX3208EATE+T uniquely combines automotive temperature qualification, integrated VCC clamping, and full IEC 61000-4-2 Level 4 test documentation - making it the only option among the three qualified for safety-critical Ethernet and FireWire deployments in harsh environments.
Availability
MAX3208EATE+T is available at Aetrix Electronics and suitable for FireWire interface protection, industrial Ethernet PHY safeguarding, DVI/HDMI source port hardening, and set-top box USB 2.0 hub designs requiring stable component supply across extended product lifecycles.
Supply support for MAX3208EATE+T 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 differential signal line protection - balancing ultra-low capacitance, precise channel matching, and certified ESD immunity to meet stringent interface standards like HDMI, FireWire, and Ethernet.
FAQ
What is the primary function of the MAX3208EATE+T in a circuit?
The MAX3208EATE+T serves as a four-channel ESD protection device that clamps transient voltages on high-speed signal lines using integrated diode arrays and a TVS structure. It routes ESD current to VCC or GND, limiting peak voltage to ±100V during IEC 61000-4-2 air-gap events. Its role is strictly protective - it does not condition, buffer, or amplify signals, and remains transparent during normal operation due to sub-0.1μA leakage.
Does the MAX3208EATE+T require an external bypass capacitor?
Yes, the MAX3208EATE+T requires a 0.1μF low-ESR ceramic capacitor placed directly between its VCC and GND pins. This capacitor absorbs charge from positive ESD transients and stabilizes the VCC rail during clamping. Without it, VCC overshoot increases significantly - for example, a 24A IEC contact discharge event into a 1Ω supply impedance raises clamp voltage by 24V. The MAX3208EATE+T datasheet explicitly mandates this capacitor for guaranteed performance.
Can the MAX3208EATE+T be used on differential USB 2.0 lines?
No - the MAX3208EATE+T is not recommended for USB 2.0 differential pair (D+/D–) protection. Although it is rated for 480Mbps signaling, its 2.7pF per-channel capacitance introduces excessive loading on tightly controlled 90Ω differential impedance traces, risking eye diagram closure and USB compliance failure. The MAX3207E (2-channel, same family) is the intended solution for USB 2.0, offering identical protection specs in a pinout optimized for D+/D– routing.
What is the significance of the exposed pad (EP) on the MAX3208EATE+T package?
The exposed pad (EP) on the MAX3208EATE+T is electrically connected to GND and serves two critical functions: it provides the lowest-inductance path for ESD current return to the ground plane, and it enhances thermal dissipation during transient events. Maxim specifies that EP must be soldered to a solid copper ground plane - floating or unconnected EP degrades ESD performance by increasing ground-loop inductance and can cause clamp voltage to exceed specifications during ±15kV tests.
How does the MAX3208EATE+T differ from the MAX3208EAUB+?
The MAX3208EATE+T and MAX3208EAUB+ share identical electrical specifications and ESD ratings, but differ exclusively in packaging: MAX3208EATE+T uses a 16-pin TQFN-EP (3mm × 3mm), while MAX3208EAUB+ uses a 10-pin µMAX package. The TQFN offers superior thermal performance and lower ground inductance due to its exposed pad and larger footprint, whereas the µMAX suits space-constrained layouts. Pinouts are incompatible - neither is a drop-in replacement for the other.
MAX3208EATE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 16-WFQFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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:
- 16-TQFN (3x3)
MAX3208EATE+T FAQ
1.How can I place an order for MAX3208EATE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX3208EATE+T 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 MAX3208EATE+T reliable?
The price and inventory of MAX3208EATE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX3208EATE+T is usually 5 days.
3.What payment methods are accepted for MAX3208EATE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX3208EATE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX3208EATE+T?
MAX3208EATE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX3208EATE+T 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 MAX3208EATE+T?
For technical support, including MAX3208EATE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX3208EATE+T requirements.
6.How does Aetrix verify that MAX3208EATE+T is sourced from the original manufacturer or authorized distributors?
All MAX3208EATE+T 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 MAX3208EATE+T meets industry standards.
7.What is the process for return or replacement of MAX3208EATE+T?
All MAX3208EATE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX3208EATE+T, 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 MAX3208EATE+T part is unused and in its original packaging.
Return procedure for MAX3208EATE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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