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Analog Devices Inc./Maxim Integrated MAX3208EATE
- Part No.:
- MAX3208EATE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- TVS Diodes
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
MAX3208EATE.pdf
- Description:
- ESD PROTECTION ARRAY
- Quantity:
- Payment:
- Shipping:
Inventory:13,024
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Product details
Overview
MAX3208EATE+ 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 (±0.05pF matching), and operates across -40°C to +125°C for automotive-grade reliability.
For engineers reviewing the MAX3208EATE+ datasheet, MAX3208EATE+ pinout, MAX3208EATE+ application, or MAX3208EATE+ equivalent, key selection criteria include channel count (4), input capacitance (2.7pF), IEC 61000-4-2 compliance, TQFN-EP package footprint, and integrated VCC-clamp functionality for controlled-rail transient suppression.
Technical Context
The MAX3208EATE+ implements a dual-diode per channel architecture that steers ESD current to VCC or GND, with an integrated TVS element clamping VCC during transients to limit rail excursion. Its optimized pinout minimizes stub inductance on controlled-impedance differential traces, supporting full-speed USB 2.0 and FireWire IEEE 1394 signaling integrity.
Each channel exhibits matched 2.7pF–3.2pF capacitance at 3.3V bias, with ≤0.05pF channel-to-channel variation-critical for skew-sensitive differential pairs. The device requires a 0.1µF ceramic bypass capacitor at VCC to achieve specified clamp voltages (e.g., VCC + 100V for ±15kV air-gap discharge).
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-enables use on >480Mbps USB 2.0 and FireWire 400/800 differential lanes without signal degradation. |
| Capacitance Matching | ±0.05pF channel-to-channel variation-preserves differential pair timing skew and common-mode rejection. |
| Clamp Voltage (Air-Gap) | VCC + 100V / -100V at 45A peak-defines maximum voltage stress transferred to protected ICs during worst-case ESD events. |
| Supply Voltage Range | 0.9V to 5.5V-supports operation with 3.3V and 5V system rails without level-shifting. |
| 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-minimizes standby power loss and avoids false triggering in high-impedance signal paths. |
Pinout & Package
MAX3208EATE+ is housed in a 16-pin, 3mm × 3mm thermally enhanced TQFN package with exposed pad (EP), optimized for low-inductance PCB layout and thermal dissipation in space-constrained interfaces.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 6, 8, 9, 11, 13, 14, 16 | N.C. | No internal connection; pins are reserved for mechanical stability and routing flexibility-must be left floating or grounded per layout best practice. |
| 2 | GND | Primary ground return path for ESD current; must connect to low-impedance ground plane to minimize inductive voltage rise during transients. |
| 4, 7, 12, 15 | I/O_ | Four independent ESD-protected signal channels; each accepts bidirectional high-speed signals (e.g., FireWire D+, D−, TP+ and TP−). |
| 10 | VCC | Power-supply rail for TVS clamp activation; requires local 0.1µF ceramic bypass to GND to suppress rail bounce during ESD events. |
| EP | Exposed Pad | Thermal and electrical ground connection; must be soldered to solid ground plane to ensure thermal reliability and low-impedance ESD return path. |
Key Features
| Feature | Design Value |
|---|---|
| Low input capacitance | 2.7pF typical per channel-preserves signal integrity on 480Mbps USB 2.0 and FireWire 400/800 differential links. |
| Matched channel capacitance | ≤0.05pF variation between any two I/O_ pins-ensures minimal skew in differential signaling and maintains common-mode noise rejection. |
| Integrated TVS clamp | Clamps VCC to known voltage during ESD events-reduces parasitic inductance effects on supply rail and protects downstream regulators. |
| Optimized pinout | Adjacent I/O_ pins placed opposite VCC/GND-enables symmetric routing of differential pairs with minimized stub length and impedance discontinuity. |
| Automotive temperature range | -40°C to +125°C operation-supports deployment in infotainment head units, Ethernet AVB gateways, and industrial camera interfaces. |
Applications
| FireWire IEEE 1394 Interface Protection | Ethernet PHY Port Protection |
|---|---|
|
Use Scenario: Protecting FireWire 400/800 data lanes (TPA+/TPA−, TPB+/TPB−) on laptop docking stations and digital camcorders against connector-based ESD. IC Role / Device Role / Timing Role: Four-channel bidirectional ESD clamp placed directly at the connector, shunting transients to VCC/GND before reaching the FireWire PHY IC. Use Value: 2.7pF capacitance prevents signal rise-time degradation on 400Mbps/800Mbps differential pairs, while ±15kV air-gap rating ensures robustness in consumer handling environments. |
Use Scenario: Safeguarding 10/100BASE-TX Ethernet PHY differential pairs (MDI+ and MDI−) in industrial switches and PoE-powered access points. IC Role / Device Role / Timing Role: Front-end ESD protection device mounted adjacent to RJ-45 magnetics, limiting transient voltage seen by PHY's analog front-end. Use Value: Channel-to-channel capacitance matching (±0.05pF) preserves differential impedance and reduces common-mode conversion, critical for maintaining <1.5dB insertion loss at 100MHz. |
| DVI/HDMI Source Port Protection | Set-Top Box USB 2.0 Hub Protection |
|
Use Scenario: Shielding DVI TMDS clock and data channels (CLK+/CLK−, DATA0+/DATA0−, etc.) on graphics controller cards against hot-plug ESD. IC Role / Device Role / Timing Role: High-speed ESD array placed at board edge before DVI connector, with I/O_ pins aligned to differential signal pairs. Use Value: Low 2.7pF capacitance avoids degrading TMDS eye diagram opening at 165MHz pixel clock rates, enabling compliance with DVI 1.0 specification. |
Use Scenario: Securing upstream/downstream USB 2.0 differential pairs (D+/D−) on STB USB hubs exposed to frequent peripheral insertion/removal. IC Role / Device Role / Timing Role: Four-channel protection IC covering both host and device-facing ports, leveraging shared VCC/GND for compact layout. Use Value: Integrated TVS clamp prevents VCC rail collapse during positive ESD strikes, avoiding brown-out resets in embedded Linux-based STB firmware. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SP3208-01FTG | 4-channel, 0.35pF lower capacitance (2.35pF typ), no integrated VCC clamp, uses external TVS for rail protection. | Requires additional external components for VCC clamping; better suited for ultra-high-speed (>1Gbps) SerDes where sub-2.5pF is mandatory. | Select SP3208-01FTG only when minimizing total channel capacitance is prioritized over BOM count reduction and layout simplicity. |
| TPD4E001DQAR | 4-channel, 3.5pF capacitance, ±12kV HBM, no integrated VCC clamp, smaller 1.6mm × 1.6mm X2SON package. | Limited to consumer-grade temperature range (-40°C to +85°C); lacks automotive qualification and IEC 61000-4-2 Level 4 compliance. | Choose TPD4E001DQAR for cost-sensitive, non-automotive USB peripherals where full IEC 61000-4-2 compliance is not required. |
Compared with SP3208-01FTG and TPD4E001DQAR, the MAX3208EATE+ uniquely combines automotive temperature support, integrated VCC clamping, and IEC 61000-4-2 Level 4 certification in a single 3mm × 3mm TQFN package-reducing component count and layout complexity for certified industrial and automotive designs.
Availability
MAX3208EATE+ is available at Aetrix Electronics and suitable for FireWire interface protection, Ethernet PHY port hardening, DVI/HDMI source port safeguarding, and set-top box USB 2.0 hub designs requiring stable component supply across automotive and industrial production cycles.
Supply support for MAX3208EATE+ 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, tight channel matching, and integrated rail clamping to meet stringent ESD requirements in next-generation connectivity interfaces.
FAQ
What is the exact channel count and I/O configuration of the MAX3208EATE+?
The MAX3208EATE+ is a four-channel ESD protection device with four independent I/O_ pins (pins 4, 7, 12, and 15), each supporting bidirectional signal flow. It includes dedicated VCC (pin 10) and GND (pin 2) connections, plus an exposed thermal pad (EP) that must be connected to ground. No other pins are functional-the remaining 10 pins are no-connect (N.C.) for mechanical and routing purposes.
Does the MAX3208EATE+ require an external TVS diode for VCC protection?
No, the MAX3208EATE+ integrates a transient voltage suppressor (TVS) that actively clamps VCC during ESD events-limiting rail excursion to VCC + 100V for ±15kV air-gap discharge. However, a 0.1µF ceramic capacitor must be placed directly between VCC and GND to absorb charge and stabilize the clamp action; this is mandatory for achieving the specified performance.
What is the measured input capacitance of the MAX3208EATE+ and how is it verified?
The MAX3208EATE+ has a typical channel I/O capacitance of 2.7pF at VCC = 3.3V and bias = VCC/2, with a guaranteed range of 2.7pF to 3.2pF. This value is 100% production tested at +25°C and characterized over temperature; the 0.05pF channel-to-channel variation is also measured and guaranteed to ensure differential signal fidelity.
Can the MAX3208EATE+ be used for USB 2.0 full-speed (12Mbps) and high-speed (480Mbps) protection?
Yes, the MAX3208EATE+ is explicitly qualified for USB 2.0 high-speed (480Mbps) applications, as confirmed in its datasheet Applications section and Selector Guide. Its 2.7pF capacitance and matched channel design preserve signal integrity on D+/D− differential pairs, and its ±15kV HBM/±8kV IEC 61000-4-2 ratings exceed USB-IF ESD requirements.
Is the MAX3208EATE+ RoHS-compliant and lead-free?
Yes, the MAX3208EATE+ carries the "+" suffix, indicating full RoHS compliance and lead-free construction per EU Directive 2011/65/EU. The package uses matte tin plating and meets JEDEC J-STD-020 moisture sensitivity level 3 (MSL-3) for standard reflow assembly.
MAX3208EATE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 16-WFQFN Exposed Pad
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5.5V (Max)
- Voltage - Breakdown (Min):
- 9V (Typ)
- Voltage - Clamping (Max) @ Ipp:
- 100V
- Current - Peak Pulse (10/1000µs):
- 45A
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- DVI, Ethernet, HDMI, USB
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN-EP (3x3)
MAX3208EATE FAQ
1.How can I place an order for MAX3208EATE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX3208EATE 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 reliable?
The price and inventory of MAX3208EATE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX3208EATE is usually 5 days.
3.What payment methods are accepted for MAX3208EATE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX3208EATE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX3208EATE?
MAX3208EATE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX3208EATE 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?
For technical support, including MAX3208EATE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX3208EATE requirements.
6.How does Aetrix verify that MAX3208EATE is sourced from the original manufacturer or authorized distributors?
All MAX3208EATE 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 meets industry standards.
7.What is the process for return or replacement of MAX3208EATE?
All MAX3208EATE units undergo pre-shipment inspection (PSI). If there is an issue with MAX3208EATE, 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 part is unused and in its original packaging.
Return procedure for MAX3208EATE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX3208EATE Tags
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