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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:
- TVS DIODE 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,168
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Product details
Overview
The 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 2.7–3.2pF per-channel input capacitance, 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), clamping voltage under IEC 61000-4-2 (±60V for contact discharge), I/O-to-I/O capacitance variation (±0.05pF), and TQFN-EP package compatibility with controlled-impedance routing.
Technical Context
The MAX3208EATE+ integrates bidirectional steering diodes per channel that route ESD transients to VCC or GND, combined with an on-chip TVS to clamp VCC rail excursions during events. Its BiCMOS process enables low leakage (<±0.1μA) and stable 2.7–3.2pF capacitance across 0–3.3V bias.
Clamp behavior is defined by diode forward voltage (VF = 0.65–0.95V at 10mA) plus supply voltage for positive pulses (VC ≈ VCC + VF), and –VF for negative pulses. Layout-critical performance requires minimized stub inductance-especially critical for FireWire's 400Mbps and Ethernet's 100Mbps differential pairs.
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 end-equipment certification. |
| Channel Input Capacitance | 2.7–3.2pF at VCC = 3.3V - preserves signal integrity on 400Mbps FireWire and 100BASE-TX Ethernet links. |
| Channel-to-Channel Capacitance Variation | ±0.05pF - ensures matched timing skew for differential pair routing without added tuning. |
| Clamp Voltage (IEC Contact) | ±60V at 24A peak - defines maximum transient overvoltage seen by protected PHY or controller ICs. |
| Supply Voltage Range | 0.9V to 5.5V - supports 3.3V and 5V systems without level-shifting; VCC must be bypassed with 0.1μF ceramic. |
| Operating Temperature | –40°C to +125°C - qualified for automotive infotainment and industrial Ethernet edge nodes. |
| Leakage Current | ±0.1μA max - negligible loading on high-impedance receiver inputs in standby or active mode. |
Pinout & Package
MAX3208EATE+ uses a 16-pin, 3mm × 3mm thermally enhanced TQFN package with exposed pad (EP), optimized for low-inductance grounding and thermal dissipation in space-constrained ports.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 6, 8 | I/O1–I/O4 | ESD-protected signal channels; each connects to one differential pair leg (e.g., FireWire TPB+/TPB–). |
| 2, 10 | GND | Dual ground terminals - provide low-impedance return path for shunted ESD current; connect EP to GND. |
| 4, 12 | VCC | Power-supply input for TVS clamp; requires local 0.1μF ceramic bypass to minimize rail bounce during transients. |
| 3, 7, 9, 11, 13–16 | N.C. | No internal connection; pins are electrically isolated and may be left floating or tied to GND for mechanical stability. |
Key Features
| Feature | Design Value |
|---|---|
| Low 2.7–3.2pF input capacitance | Enables use on 400Mbps FireWire and 100BASE-TX Ethernet without measurable rise-time degradation. |
| ±0.05pF channel-to-channel capacitance matching | Maintains <0.1ps skew between differential legs - critical for jitter-sensitive serial links. |
| Integrated TVS clamp on VCC rail | Prevents uncontrolled VCC rail sag or overshoot during ESD events, reducing need for external TVS diodes. |
| Optimized pinout for controlled-impedance routing | Adjacent I/O pins placed opposite GND/VCC to minimize stub length and enable direct connector-to-IC routing. |
| Automotive-grade temperature range | Validated operation from –40°C to +125°C - suitable for under-hood or dashboard-mounted Ethernet gateways. |
Applications
| FireWire IEEE 1394 Port Protection | Ethernet 100BASE-TX Interface |
|---|---|
|
Use Scenario: Protecting FireWire ports on digital camcorders, audio interfaces, and industrial motion controllers against user-handling ESD. IC Role / Device Role / Timing Role: Front-end ESD clamp for TPB+/TPB– differential pairs; routes transients to VCC/GND before reaching PHY IC. Use Value: Maintains 400Mbps link integrity with <0.1ps differential skew due to matched 2.7–3.2pF capacitance and ±0.05pF channel variation. |
Use Scenario: Shielding Ethernet PHYs in automotive telematics units and factory-floor switches from cable-discharge ESD events. IC Role / Device Role / Timing Role: Per-lane protection for TX+/TX– and RX+/RX– pairs; integrated TVS prevents VCC rail disturbance during multi-kV surges. Use Value: Delivers ±8kV IEC contact discharge protection while holding clamp voltage to ±60V - within safe margin of 3.3V PHY absolute max ratings. |
| DVI/HDMI Source Port Protection | Industrial Inter-Chassis Data Links |
|
Use Scenario: Safeguarding DVI output ports on graphics controller cards in medical imaging displays and broadcast monitors. IC Role / Device Role / Timing Role: High-speed single-ended ESD guard for TMDS clock and data channels; low capacitance avoids eye-diagram closure. Use Value: 2.7–3.2pF capacitance and ±0.05pF matching preserve 165MHz TMDS signal fidelity and meet HDMI compliance test margins. |
Use Scenario: Hardening RS-485 or LVDS interconnects between PLC modules and I/O racks in harsh factory environments. IC Role / Device Role / Timing Role: Robust front-end protection for differential control/data buses subjected to repeated cable hot-plug and maintenance ESD. Use Value: –40°C to +125°C rating and ±15kV HBM/air-gap immunity ensure long-term reliability where ambient temperature swings exceed 100°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SP3012-04UTG | 4-channel, 0.3pF lower typical capacitance (2.4pF), but only ±12kV HBM rated; no integrated VCC TVS. | Lacks VCC rail clamping - requires external TVS or robust power supply design to handle ESD-induced rail bounce. | Choose when ultra-low capacitance is prioritized over integrated VCC protection and automotive temp range is not required. |
| TPD2EUSB30DR | 4-channel, 0.8pF higher capacitance (3.5pF typ), supports USB 3.0 (5Gbps); includes integrated 5V VBUS switch. | Designed specifically for USB 3.0 SuperSpeed lanes - not optimized for FireWire or Ethernet differential impedance profiles. | Prefer for USB 3.0 host/device ports; avoid for FireWire/Ethernet where 2.7–3.2pF and matched skew are mandatory. |
Compared with SP3012-04UTG and TPD2EUSB30DR, the MAX3208EATE+ uniquely combines automotive temperature support, integrated VCC TVS clamping, and tight ±0.05pF channel capacitance matching - making it the only option validated for FireWire 400Mbps and 100BASE-TX Ethernet in extended-temperature industrial deployments.
Availability
MAX3208EATE+ is available at Aetrix Electronics and suitable for FireWire port protection, Ethernet 100BASE-TX interface hardening, and DVI source-side ESD shielding requiring stable component supply and automotive-grade reliability.
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) designs precision analog, mixed-signal, and power-management ICs for industrial, automotive, and communications systems.
The MAX3205E/MAX3207E/MAX3208E family targets high-speed serial interface protection, delivering low-capacitance, multi-channel ESD arrays with integrated TVS for differential and single-ended signals in demanding environments.
FAQ
What is the maximum operating voltage for MAX3208EATE+?
The MAX3208EATE+ supports a supply voltage range of 0.9V to 5.5V. This allows direct integration into both 3.3V and 5V systems without level-shifting circuitry. The device's ESD clamping behavior scales with VCC - for example, positive transients clamp near VCC + 0.95V - so maintaining stable VCC via a local 0.1μF ceramic capacitor is essential for predictable protection performance in the MAX3208EATE+.
Does MAX3208EATE+ require external components for basic ESD protection?
Yes - the MAX3208EATE+ requires a 0.1μF low-ESR ceramic capacitor between VCC and GND, placed as close as possible to the device's VCC pin. This capacitor absorbs charge from positive ESD transients and stabilizes the VCC rail during clamping. Without it, VCC bounce increases effective clamp voltage, potentially exceeding protected ICs' absolute maximum ratings. No additional series resistors or TVS diodes are needed due to the MAX3208EATE+'s integrated architecture.
How does MAX3208EATE+ differ from MAX3207E in terms of pinout and layout?
The MAX3208EATE+ uses a 16-pin TQFN-EP package with four I/O channels (I/O1–I/O4), dual GND and VCC pins, and multiple N.C. pads. In contrast, the MAX3207E is a 6-pin SOT23 with only two I/O channels. The MAX3208EATE+'s pin arrangement places I/O pins adjacent to GND/VCC to minimize stub inductance - critical for FireWire and Ethernet routing - whereas the MAX3207E's compact SOT23 layout suits USB 2.0 traces but lacks the channel count and thermal capability of the MAX3208EATE+.
Can MAX3208EATE+ be used for USB 2.0 protection?
While the MAX3208EATE+ meets USB 2.0's ±15kV HBM ESD requirement and has suitable capacitance (2.7–3.2pF), it is not optimized for USB 2.0's specific pinout or signaling topology. The MAX3207E - a dedicated 2-channel variant - is recommended for USB 2.0 due to its SOT23 footprint, lower channel count, and pin assignment aligned with D+/D– routing. Using MAX3208EATE+ for USB 2.0 would waste two channels and complicate layout without functional benefit.
What is the role of the exposed pad (EP) in MAX3208EATE+?
The exposed pad (EP) on the MAX3208EATE+ is a thermal and electrical ground connection - it must be soldered to a solid GND plane on the PCB. This provides low-inductance return paths for ESD current, improves thermal dissipation during transient events, and reduces overall system impedance. Leaving EP unconnected degrades ESD performance and risks thermal overstress; connecting it to anything other than GND violates the MAX3208EATE+'s absolute maximum ratings and may cause latch-up or failure.
MAX3208EATE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 16-WFQFN Exposed Pad
- 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:
- 16-TQFN (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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