Analog Devices Inc./Maxim Integrated MAX3202EETT

Overview

MAX3202EETT from Maxim Integrated is a two-channel, low-capacitance ESD protection diode array designed for USB and USB 2.0 data lines. It delivers ±15kV HBM, ±8kV IEC 61000-4-2 contact discharge, and ±15kV air-gap discharge protection with 5pF per channel input capacitance, 1nA max leakage current, and operation across +0.9V to +5.5V supply range - enabling robust high-speed interface protection without signal integrity degradation.

For engineers reviewing the MAX3202EETT datasheet, MAX3202EETT pinout, MAX3202EETT application, or MAX3202EETT equivalent, this device is selected for USB 2.0 port hardening where low capacitance, precise clamping voltage (±25V HBM, ±60V IEC contact), and compact 6-pin TDFN-EP package are critical to maintaining 480Mbps signaling integrity and board-level ESD compliance.

Technical Context

The MAX3202EETT implements dual bidirectional steering diodes per channel, routing ESD transients to VCC or GND depending on polarity. Its BiCMOS process enables low forward voltage (0.65V typ at 10mA) and tight thermal resistance (θJA = 42°C/W, θJC = 9°C/W) in the 3mm × 3mm TDFN-EP package.

Clamp voltage behavior follows VC = VCC + VF for positive pulses and VC = –VF for negative pulses under ideal conditions; real-world performance depends on PCB layout parasitics - especially trace inductance - which directly adds to clamp voltage during fast-rising IEC events (e.g., +45A in 1ns for ±15kV air-gap).

Key Specifications

Pinout & Package

MAX3202EETT is housed in a 6-pin TDFN-EP (3mm × 3mm) package with exposed pad (EP) requiring connection to GND for optimal thermal and ESD return path performance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ESD protection applications.

Compared with MAX3202EETT, TPD2E001DRYR offers lower capacitance but lacks integrated VCC clamping and requires dual devices for USB differential pair coverage, while SP1003-02UTG provides superior capacitance but trades off ±15kV HBM rating and VCC-assisted clamping - making MAX3202EETT the balanced choice for certified USB 2.0 port protection with minimal BOM and layout overhead.

Availability

MAX3202EETT is available at Aetrix Electronics and suitable for USB 2.0 interface protection, industrial embedded USB ports, and high-speed data line ESD hardening requiring stable component supply, RoHS-compliant packaging, and guaranteed -40°C to +85°C operational performance.

Supply support for MAX3202EETT 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, communications, computing, and consumer applications.

The MAX3202EETT belongs to Maxim's ESD protection array product line, engineered specifically for high-speed serial interface hardening - balancing ultra-low capacitance, multi-standard ESD immunity, and compact footprint to simplify USB, FireWire, and video port certification.

FAQ

What is the maximum operating temperature range for the MAX3202EETT?

The MAX3202EETT is specified for continuous operation from -40°C to +85°C ambient temperature. This range is validated across all electrical parameters including leakage current, clamp voltage, and ESD withstand capability. The device's 42°C/W junction-to-ambient thermal resistance ensures reliable performance at the upper limit when mounted on a standard 4-layer PCB with the exposed pad properly soldered to a GND plane.

Does the MAX3202EETT require an external bypass capacitor, and if so, what value and placement is recommended?

Yes, the MAX3202EETT requires a 0.1µF low-ESR ceramic capacitor between VCC and GND. Per Maxim's layout guidelines, this capacitor must be placed as close as possible to the VCC pin (Pin 4) and the exposed pad (EP) to minimize loop inductance. This bypass is essential for absorbing charge during IEC 61000-4-2 contact discharge events and stabilizing the VCC rail during positive ESD transients - failure to implement it degrades clamp voltage performance by up to 24V under worst-case 24A surge conditions.

Can the MAX3202EETT be used for USB 3.0 or SuperSpeed interfaces?

No, the MAX3202EETT is not suitable for USB 3.0 SuperSpeed (5Gbps) interfaces. Its 5pF channel capacitance introduces excessive insertion loss and phase mismatch above ~500MHz, violating USB 3.0 eye diagram and jitter specifications. The device is explicitly characterized and qualified for USB 2.0 (480Mbps) and earlier standards - use dedicated USB 3.0 ESD arrays such as the MAX3355E or TPD4S012 for Gen1/Gen2 applications.

How does the MAX3202EETT handle negative ESD transients on the I/O lines?

The MAX3202EETT handles negative ESD transients by conducting them through the internal steering diode cathodes to GND. For a negative pulse, the clamp voltage is approximately –VF (forward voltage), typically –0.65V at 10mA. Under IEC 61000-4-2 testing, the measured negative clamp reaches –60V for contact discharge and –100V for air-gap discharge due to parasitic inductance effects - values confirmed in the device's Electrical Characteristics table and validated across production lots.

Is the exposed pad (EP) on the MAX3202EETT electrically connected internally, and must it be soldered to GND?

Yes, the exposed pad (EP) on the MAX3202EETT is internally connected to GND and must be soldered to a PCB GND plane. It serves dual functions: providing the primary thermal conduction path (θJC = 9°C/W) and forming the lowest-inductance return path for ESD current during negative transients. Leaving EP unconnected or floating violates the Absolute Maximum Ratings and degrades both thermal performance and ESD protection effectiveness - Maxim specifies full solder coverage and direct connection to a solid GND pour in Application Note 1891.