Analog Devices Inc./Maxim Integrated MAX3374EEBL

Overview

The MAX3374EEBL from Maxim Integrated is a unidirectional ±15kV ESD-protected level translator enabling data transfer between 1.2V–5.5V logic domains (VL) and 1.65V–5.5V systems (VCC). It supports guaranteed 8Mbps operation across full voltage range, delivers rail-to-rail output swing (VOHL = 0.67×VL, VOHC = 0.67×VCC), and features ultra-low 1µA three-state supply current. It is used in SPI/MICROWIRE interfaces between low-voltage ASICs and higher-voltage peripherals.

For engineers reviewing the MAX3374EEBL datasheet, MAX3374EEBL pinout, MAX3374EEBL application, or MAX3374EEBL equivalent, key selection criteria include unidirectional VL→VCC translation capability, 8Mbps minimum data rate at 1.2V≤VL≤VCC≤5.5V, ±15kV HBM ESD protection on VCC-side I/Os, thermal short-circuit protection, and compatibility with UCSP-14 (3mm×4mm) packaging for space-constrained portable designs.

Technical Context

The MAX3374EEBL implements unidirectional level shifting using MOSFET-based pass-gate architecture optimized for VL→VCC direction only. Its input thresholds are VIHL = VL − 0.2V (VL side) and VIHC = VCC − 0.4V (VCC side), ensuring robust noise margins across operating voltages. Output drive strength is specified for 20µA source / 1mA sink currents, with VOHL ≥ 0.67×VL and VOLC ≤ 0.4V.

It integrates speed-up circuitry with one-shot triggered rise-time accelerators on both sides, enabling 16Mbps operation under specific voltage conditions (+1.8V≤VL≤VCC≤+2.5V or +2.5V≤VL≤VCC≤+3.3V). Thermal shutdown activates at TJ = +152°C and recovers at +142°C, while three-state mode is controlled by a VL-referenced enable pin.

Key Specifications

Pinout & Package

The MAX3374EEBL is packaged in a 14-pin UCSP (3mm × 4mm) with exposed pad. This lead-free, space-efficient package supports fine-pitch PCB assembly and thermal dissipation via EP grounded to PCB ground plane.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TXB0104RUTR and SN74AVC4T245PWR, the MAX3374EEBL provides guaranteed unidirectional operation, integrated ±15kV HBM ESD protection on VCC I/Os, and thermal fault recovery-making it uniquely suited for compact, externally connected portable electronics where reliability and board space are critical.

Availability

The MAX3374EEBL is available at Aetrix Electronics and suitable for portable communication devices, smart card readers, and cell-phone cradles requiring stable component supply across extended temperature ranges (−40°C to +85°C).

Supply support for MAX3374EEBL 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 high-reliability semiconductor solutions for industrial, communications, and consumer applications.

The MAX3372E–MAX3379E family was engineered specifically for robust, low-power, ESD-hardened voltage translation in battery-operated portable electronics interfacing multiple logic domains.

FAQ

What is the maximum guaranteed data rate for MAX3374EEBL across its full voltage range?

The MAX3374EEBL guarantees 8Mbps operation for VL and VCC supplies between +1.2V and +5.5V. Higher rates-up to 16Mbps-are achievable only within constrained voltage windows: +1.8V ≤ VL ≤ VCC ≤ +2.5V or +2.5V ≤ VL ≤ VCC ≤ +3.3V. These faster speeds rely on internal rise-time accelerators and require C_L ≤ 15pF and driver impedance ≤ 50Ω.

Can MAX3374EEBL perform bidirectional level translation like the MAX3372E?

No. The MAX3374EEBL is strictly unidirectional (VL → VCC only). Unlike the MAX3372E or MAX3377E, it lacks transmission-gate architecture and cannot translate signals from VCC back to VL. Its pinout and internal logic are optimized for single-direction flow, making it ideal for SPI master-to-peripheral or UART TX-only paths.

How does the THREE-STATE pin function on MAX3374EEBL?

The THREE-STATE pin on MAX3374EEBL is VL-referenced: pulling it low (≤0.15V) places all I/O VL and I/O VCC terminals into high-impedance state and reduces total supply current to <1µA. For normal operation, connect it to VL (logic high). This feature enables multidrop bus sharing and ultra-low-power standby modes in portable devices using MAX3374EEBL.

Does MAX3374EEBL require external components for ESD protection?

No. The MAX3374EEBL integrates ±15kV Human Body Model ESD protection on all I/O VCC pins, eliminating the need for external TVS diodes when routing those signals to connectors or external ports. However, a 1µF capacitor between VCC and GND is recommended per datasheet Note 3 to maximize ESD immunity performance.

What package type is used for MAX3374EEBL and what are its thermal considerations?

The MAX3374EEBL uses a 14-pin UCSP (3mm × 4mm) package with an exposed pad (EP). The EP must be soldered to a PCB ground plane to ensure proper thermal dissipation and EMI suppression. Thermal short-circuit protection triggers at +152°C junction temperature and recovers autonomously at +142°C, allowing safe operation in thermally dense portable layouts without external thermal sensors.