Analog Devices Inc./Maxim Integrated MAX3340EEBE

Overview

MAX3340EEBE from Maxim Integrated is a ±15kV ESD-protected bidirectional USB level translator in 16-pin UCSP (4×4 mm), supporting full-speed (12Mbps) and low-speed (1.5Mbps) USB 1.1/2.0 operation. It integrates a 1.5kΩ internal termination resistor, 3.3V linear regulator (VTRM) sourcing up to 15mA, and operates with VL as low as 1.8V. It enables robust USB connectivity in space-constrained portable devices such as MP3 players and PDAs.

For engineers reviewing the MAX3340EEBE datasheet, MAX3340EEBE pinout, MAX3340EEBE application, or MAX3340EEBE equivalent, key selection considerations include its UCSP package footprint, suspend-mode current (<200µA), re-enumerate-on-power feature, ±15kV HBM ESD rating on D+/D-, and dual-mode (single-ended/differential) logic interface capability.

Technical Context

The MAX3340EEBE implements a fully integrated bidirectional signal translation architecture between 1.8V–3.6V logic domains and USB differential signaling. Its internal 3.3V linear regulator (VTRM) powers internal circuitry and can supply external loads up to 15mA, eliminating need for auxiliary LDOs. The device supports two operational modes: MODE=0 for single-ended VP-driven transmission and MODE=1 for differential VP/VM transmission, both with configurable SPEED (full/low) and SUSP (suspend) control.

ESD protection is implemented at the silicon level on D+ and D− pins using structures validated to ±15kV HBM, ±9kV IEC 1000-4-2 air-gap, and ±5kV contact discharge. The re-enumerate function is triggered by floating OE/ENUMERATE for >200ns, disconnecting the internal 1.5kΩ pull-up from D+/D−-a hardware-level USB protocol reset without power cycling.

Key Specifications

Pinout & Package

MAX3340EEBE is packaged in a 16-pin Ultra-Thin Chip-Scale Package (UCSP), 4mm × 4mm, 0.5mm pitch, with bottom-side solder bumps. Pin 1 is located at top-left corner (A1) under standard CSP orientation. The package is rated for −40°C to +85°C operation and requires adherence to Maxim's UCSP assembly guidelines for reliability.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB level translation applications.

Compared with MAX3343EEBE, MAX3340EEBE offers on-chip 3.3V regulation and broader logic voltage support (1.8V–3.6V), but lacks native suspend-detection logic; versus TPD6S300ARGER, it delivers complete signal translation and power functionality-not just protection-making it suitable for new USB peripheral designs where BOM reduction and UCSP footprint are critical.

Availability

MAX3340EEBE is available at Aetrix Electronics and suitable for MP3 players, industrial PDAs, cell phone data cradles, and PC peripheral adapters requiring stable component supply, compact UCSP packaging, and guaranteed −40°C to +85°C operation.

Supply support for MAX3340EEBE 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 semiconductor company specializing in analog and mixed-signal ICs for power, sensing, connectivity, and security applications.

The MAX3340E product line was designed specifically for space-constrained USB peripheral interfaces requiring integrated level translation, ESD protection, and local regulation-targeting portable consumer and industrial edge devices.

FAQ

What is the primary function of the MAX3340EEBE?

The MAX3340EEBE is a bidirectional USB level translator that converts 1.8V–3.6V logic signals to USB-compliant differential signals (D+/D−) and vice versa. It integrates ±15kV ESD protection, a 3.3V linear regulator (VTRM), and a switchable 1.5kΩ USB termination resistor-all in a 4mm × 4mm UCSP package. Its core function is enabling robust, compact USB connectivity for low-voltage portable systems without external support components.

Does the MAX3340EEBE require external resistors for USB compliance?

Yes-the MAX3340EEBE requires two 24.3Ω ±1% series resistors placed between its D+ and D− pins and the USB connector. These resistors are mandated by USB specification 1.1/2.0 for impedance matching and signal integrity. While the device includes the internal 1.5kΩ pull-up resistor, the 24.3Ω resistors are not integrated and must be placed externally per the Typical Operating Circuit in the datasheet.

How does the re-enumerate feature work on the MAX3340EEBE?

The MAX3340EEBE re-enumerate feature activates when OE/ENUMERATE is left floating for more than 200ns (typical), which disconnects the internal 1.5kΩ pull-up resistor from both D+ and D−. This simulates a USB disconnect event, prompting the host to re-enumerate the device. This hardware-level reset occurs without power cycling or cable removal-enabling dynamic USB protocol changes during live operation.

What is the maximum load current supported by the VTRM output on the MAX3340EEBE?

The VTRM pin on the MAX3340EEBE delivers a regulated 3.3V output capable of sourcing up to 15mA continuously. This output is derived from VCC and is intended to power external circuitry such as LEDs, level shifters, or sensor interfaces. A minimum 1.0µF low-ESR ceramic capacitor must be placed between VTRM and GND for stability, as specified in the datasheet.

Can the MAX3340EEBE operate in both full-speed and low-speed USB modes?

Yes-the MAX3340EEBE supports both full-speed (12Mbps) and low-speed (1.5Mbps) USB operation. The SPEED pin selects the mode: logic high configures the internal 1.5kΩ pull-up resistor to connect to D+ (full-speed), while logic low connects it to D− (low-speed). Both modes comply with USB specification 1.1 and full-speed/low-speed operation under USB 2.0.