Analog Devices Inc./Maxim Integrated MAX13204EELT+T

Overview

MAX13204EELT+T from Maxim Integrated is a quad-channel ±30kV ESD protection diode array in a 6-pin µDFN (2mm × 2mm) package, designed for Ethernet and FireWire® data lines. It delivers 6pF channel input capacitance, ±15kV HBM and ±30kV IEC 61000-4-2 air-gap ESD immunity, and operates from +0.9V to +16V supply voltage - enabling robust high-speed interface protection without signal integrity degradation.

For engineers reviewing the MAX13204EELT+T datasheet, MAX13204EELT+T pinout, MAX13204EELT+T application, or MAX13204EELT+T equivalent, this device is selected for USB 2.0, Ethernet PHY, FireWire, and video I/O protection where low capacitance, automotive-grade temperature range (–40°C to +125°C), and precise clamping behavior under ±30kV transients are critical design requirements.

Technical Context

The MAX13204EELT+T implements a quad-channel bidirectional diode-steering architecture that routes ESD current to VCC or GND depending on polarity, with clamping voltages of VCC + 120V (positive air-gap) and –120V (negative air-gap) at 90A peak pulse. Its BiCMOS process ensures stable leakage (<1nA at +25°C) and low forward voltage (0.65V typ. at 10mA).

Each I/O channel integrates two back-to-back diodes referenced to VCC and GND, requiring an external 0.1µF ceramic bypass capacitor on VCC to absorb charge during IEC contact discharge events. The device functions as a secondary protection layer, working in conjunction with intrinsic IC-level ESD structures rather than replacing them.

Key Specifications

Pinout & Package

MAX13204EELT+T is housed in a 6-pin µDFN package (2mm × 2mm, 0.8mm height) with wettable flanks and lead-free finish. Pin 1 is marked by a top-side dot; the package uses a thermal pad (exposed die attach) connected to GND for enhanced power dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NUP4202MR6T1G and TPD4E001DRYR, MAX13204EELT+T uniquely combines automotive temperature range, ±30kV air-gap immunity, and 6pF capacitance in a single 2mm × 2mm package - making it the only option among the three qualified for Ethernet PHY and FireWire® applications in harsh environments.

Availability

MAX13204EELT+T is available at Aetrix Electronics and suitable for Ethernet PHY interfaces, FireWire® data links, USB 2.0 high-speed ports, and SVGA video outputs requiring stable component supply across automotive, industrial, and medical electronics programs.

Supply support for MAX13204EELT+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 demanding industrial, automotive, and communications applications.

The MAX1320x family was developed specifically to address ESD vulnerability in high-speed serial interfaces - delivering ultra-low capacitance, guaranteed ±30kV air-gap protection, and extended temperature operation without compromising board-space efficiency.

FAQ

What is the maximum clamping voltage of MAX13204EELT+T during a ±30kV IEC 61000-4-2 air-gap discharge?

The MAX13204EELT+T exhibits a channel clamp voltage of VCC + 120V for positive transients and –120V for negative transients when subjected to ±30kV IEC 61000-4-2 air-gap discharge at 90A peak current. This value is measured under standardized test conditions and defines the absolute maximum overvoltage imposed on protected downstream ICs - assuming proper PCB layout with minimized parasitic inductance and correct 0.1µF VCC bypassing.

Does MAX13204EELT+T require external components to meet its specified ESD performance?

Yes - MAX13204EELT+T requires a 0.1µF low-ESR ceramic capacitor placed between VCC and GND, located within 2mm of the device pins. This capacitor absorbs charge during IEC contact discharge events and stabilizes the supply rail during ESD transients. Without it, clamp voltage overshoot increases significantly due to VCC rail collapse, degrading effective protection.

Can MAX13204EELT+T be used on 3.3V-only systems?

Yes - MAX13204EELT+T operates across +0.9V to +16V, fully supporting 3.3V logic domains. At VCC = 3.3V, its positive clamp voltage becomes ~123.3V (3.3V + 120V), which remains safe for most 3.3V PHYs and transceivers. The device's leakage current stays below 1nA, avoiding interference with low-power 3.3V signaling.

Is MAX13204EELT+T pin-compatible with other devices in the MAX1320x family?

No - MAX13204EELT+T uses a 6-pin µDFN (2mm × 2mm) package with pinout VCC-I/O1-I/O2-I/O3-I/O4-GND. The MAX13202E uses a different 6-pin µDFN (1mm × 1.5mm) with N.C. pins, while MAX13206E/MAX13208E use 8-pin and 10-pin variants. Physical and electrical pin compatibility does not exist across the family; each variant requires unique PCB layout.

What is the thermal pad connection requirement for MAX13204EELT+T?

The exposed thermal pad on the underside of the MAX13204EELT+T µDFN package must be soldered to a GND copper pour using ≥4 thermal vias (0.3mm diameter) spaced evenly beneath the pad. This connection provides both mechanical anchoring and low-inductance return path for ESD current - reducing clamp voltage overshoot and improving thermal dissipation during repetitive transients.