Analog Devices Inc./Maxim Integrated MAX3341EEBE

Overview

The MAX3341EEBE from Maxim Integrated is a ±15kV ESD-protected bidirectional USB level translator in 4×4 UCSP package, converting logic-level (1.8V–3.6V) signals to full-speed USB (12Mbps) differential signals and vice versa. It integrates a 1.5kΩ USB pullup resistor, internal 3.3V linear regulator (VTRM), USB detect (USB_DET), suspend mode (<50µA ICC), and reenumerate-on-power feature - enabling robust USB connectivity in space-constrained portable devices like MP3 players and digital cameras.

For engineers reviewing the MAX3341EEBE datasheet, MAX3341EEBE pinout, MAX3341EEBE application, or MAX3341EEBE equivalent, key selection considerations include its UCSP footprint, VL supply down to 1.8V, ±15kV HBM/IEC air-gap ESD rating on D+/D-/VCC, suspend-mode receiver activity, and USB 1.1/2.0 full-speed compliance without external termination resistors beyond the required 23.7Ω series components.

Technical Context

The MAX3341EEBE implements dual-path signal conversion: differential or single-ended logic inputs (VPO/VMO) are translated to USB D+/D- outputs via a slew-controlled transmitter with skew-independent timing (input skew ≤10ns ignored); simultaneously, USB differential inputs drive both a differential receiver (RCV output) and single-ended receivers (VPI/VMI), supporting mixed-mode system interfacing. Its internal linear regulator (VTRM = 3.0–3.6V) powers USB-side circuitry directly from VCC (4V–5.5V), eliminating need for external 3.3V rail.

USB detection is implemented via open-drain USB_DET output asserting high when VCC ≥3.7V (with 25mV hysteresis), enabling host-side power presence monitoring. Suspend mode (SUSP = high) maintains VPI/VMI receiver functionality and RCV low while reducing VCC current to <50µA - allowing remote wakeup signaling at ≤200kbps on D+/D- without slew control.

Key Specifications

Pinout & Package

The MAX3341EEBE is housed in a 4×4 mm ultra-thin chip-scale package (UCSP) with 16 solder bumps arranged in a 4×4 grid. Pin mapping follows standard UCSP orientation with die-up construction and non-solder-mask-defined pads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX3341EEBE, MAX3343EEBE reduces external component count via integrated resistors but offers identical ESD, suspend, and enumeration functionality; TPD2EUSB30DRBR trades off key features (no VTRM, no ENUM, lower ESD) for lower unit cost in non-critical applications.

Availability

MAX3341EEBE is available at Aetrix Electronics and suitable for MP3 players, digital cameras, cell phones, and PDAs requiring stable component supply with guaranteed long-term manufacturability and traceable sourcing.

Supply support for MAX3341EEBE 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 high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.

The MAX3341EEBE belongs to Maxim's USB interface product line, designed specifically for space-constrained portable electronics needing robust, low-power, fully integrated USB 2.0 full-speed connectivity with minimal external components.

FAQ

What is the primary function of the MAX3341EEBE?

The MAX3341EEBE is a bidirectional USB level translator that converts 1.8V–3.6V logic signals to USB full-speed differential signals (D+/D-) and vice versa. It integrates ±15kV ESD protection, a 1.5kΩ USB pullup resistor controllable via ENUM, an internal 3.3V linear regulator (VTRM), USB detect (USB_DET), and suspend mode operation - all in a 4×4 mm UCSP package. The MAX3341EEBE enables compact, robust USB connectivity in portable devices without requiring external voltage regulators or ESD diodes.

Does the MAX3341EEBE require external resistors for USB compliance?

Yes, the MAX3341EEBE requires two external 23.7Ω ±1% resistors placed in series between the D+/D- pins and the USB connector. These resistors set the correct output impedance for USB full-speed operation and are explicitly specified in the datasheet. The MAX3341EEBE does include an internal 1.5kΩ pullup resistor on D+, controlled by the ENUM pin, eliminating the need for that external component. The MAX3341EEBE's internal circuitry is designed to operate correctly only when these 23.7Ω resistors are present.

How does the suspend mode of the MAX3341EEBE work?

When SUSP is driven high, the MAX3341EEBE enters suspend mode, reducing VCC supply current to less than 50µA. In this state, RCV is forced low, but VPI and VMI remain active - allowing the host processor to monitor USB bus activity and trigger wake-up. The MAX3341EEBE can also transmit wakeup signaling on D+/D- at ≤200kbps while in suspend mode, though slew rate control is disabled. This behavior is fully documented in the MAX3341EEBE datasheet's suspend timing and truth tables (Tables 1c and 1d).

Can the MAX3341EEBE interface with 1.8V logic supplies?

Yes, the MAX3341EEBE supports logic supply voltages (VL) from 1.8V to 3.6V, making it compatible with modern low-voltage ASICs and SoCs. Its input thresholds (VIH = 2/3 × VL, VIL = 0.4V) and output drive strength (VOH = VL − 0.2V, VOL = 0.4V) are specified across this entire range. The MAX3341EEBE maintains full USB 2.0 full-speed timing performance and ESD protection integrity at 1.8V VL, as verified in the Typical Operating Characteristics plots (e.g., propagation delay vs. VL).

What is the purpose of the USB_DET pin on the MAX3341EEBE?

The USB_DET pin is an open-drain output that signals the presence of valid USB power (VCC). It asserts high when VCC exceeds 3.7V (with 25mV hysteresis) and low otherwise. This allows the host system processor to detect USB cable insertion/removal without polling or additional sensing circuitry. The MAX3341EEBE's USB_DET function is internally tied to the VCC supply monitor and operates independently of other control pins - providing a reliable, low-latency power presence indicator essential for automatic USB enumeration in portable devices.