Analog Devices Inc./Maxim Integrated MAX3372EEBL

Overview

The MAX3372EEBL from Maxim Integrated is a bidirectional, dual-channel voltage-level translator IC designed for interfacing low-voltage logic (VL = +1.2V to +5.5V) with higher-voltage systems (VCC = +1.65V to +5.5V). It supports guaranteed 230kbps data rate, provides ±15kV HBM ESD protection on VCC-side I/Os, consumes ≤1µA in three-state mode, and operates across –40°C to +85°C. It enables reliable SPI and I²C signal translation between ASICs/PLDs and legacy 3.3V/5V peripherals.

For engineers reviewing the MAX3372EEBL datasheet, MAX3372EEBL pinout, MAX3372EEBL application, or MAX3372EEBL equivalent, this page delivers verified electrical specs, bidirectional timing behavior, UCSP-8 package details, thermal short-circuit protection, and real-world use cases in portable communication and smart-card interfaces - all grounded in Maxim's official characterization data.

Technical Context

The MAX3372EEBL employs a transmission-gate-based architecture enabling true bidirectional level shifting (VL ↔ VCC) on each of its two independent channels without direction-control pins. Its logic thresholds are VL-referenced for inputs on the VL side (VIHL = VL – 0.2V, VILL = 0.15V) and VCC-referenced for inputs on the VCC side (VIHC = VCC – 0.4V, VILC = 0.15V), ensuring robust noise immunity across mixed-supply domains.

It integrates slew-rate limiting to suppress EMI emissions at 230kbps operation and features a dedicated THREE-STATE input that forces both I/O VL and I/O VCC lines into high-impedance state while reducing total supply current to <1µA - critical for power-sensitive portable designs requiring bus isolation during sleep modes.

Key Specifications

Pinout & Package

The MAX3372EEBL is housed in an 8-pin 2mm × 2mm UCSP (Ultra Compact Silicon Package) with exposed pad, optimized for space-constrained portable electronics. Pin numbering follows top-view orientation with pin 1 marked by dot.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TXB0102DGSR and SN74AVC2T244RSWR, the MAX3372EEBL uniquely combines guaranteed 230kbps bidirectional operation, ±15kV HBM ESD on VCC I/Os, and sub-1µA three-state current - making it optimal for space- and power-constrained portable electronics where reliability under ESD stress is non-negotiable.

Availability

The MAX3372EEBL is available at Aetrix Electronics and suitable for smart card readers, portable POS terminals, cell-phone cradles, and GPS receivers requiring stable component supply, long-term lifecycle support, and guaranteed performance across industrial temperature ranges.

Supply support for MAX3372EEBL 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 MAX3372EEBL belongs to Maxim's ESD-protected level translator product line, engineered specifically for robust, low-power voltage-domain bridging in portable and battery-operated systems where board space, ESD resilience, and standby current are critical constraints.

FAQ

What is the maximum data rate supported by the MAX3372EEBL?

The MAX3372EEBL guarantees 230kbps operation across its full specified VL (+1.2V to +5.5V) and VCC (+1.65V to +5.5V) supply range. While higher rates up to 16Mbps are possible under specific voltage combinations (e.g., +1.8V ≤ VL ≤ VCC ≤ +2.5V), only the 230kbps rating is production-tested and guaranteed for the MAX3372EEBL variant. This ensures timing predictability in SPI, I²C, and UART applications without derating.

Does the MAX3372EEBL require external ESD protection components?

No, the MAX3372EEBL does not require external ESD protection on its VCC-side I/O pins. It integrates ±15kV Human Body Model (HBM) ESD protection on all I/O VCC lines - validated per JEDEC JS-001 - and maintains functionality post-ESD event without latch-up. External protection may still be considered for I/O VL pins in extreme environments, but is not required for standard handheld or portable equipment compliance.

How does the three-state mode function on the MAX3372EEBL?

The MAX3372EEBL enters three-state mode when the THREE-STATE pin is pulled low (logic low referenced to VL). In this state, both I/O VL and I/O VCC lines become high-impedance, and total supply current drops to less than 1µA. The internal 10kΩ pullup resistors on I/O lines are disconnected, enabling safe multidrop bus configurations and ultra-low-power system sleep states - critical for battery longevity in portable POS and GPS devices.

Can the MAX3372EEBL translate between 1.2V and 5V logic domains?

Yes, the MAX3372EEBL supports VL as low as +1.2V and VCC as high as +5.5V, enabling direct translation between 1.2V ASICs/PLDs and 5V peripherals. However, the condition VL ≤ (VCC + 0.3V) must be met for safe operation. For example, VL = +1.2V and VCC = +5.0V satisfies this requirement and is explicitly validated in Maxim's Electrical Characteristics table.

What package type is used for the MAX3372EEBL?

The MAX3372EEBL is packaged in an 8-pin 2mm × 2mm UCSP (Ultra Compact Silicon Package) with exposed pad. This lead-free, RoHS-compliant package offers minimal footprint and thermal performance suitable for high-density portable electronics. Pinout matches the SOT23-8 and TDFN-8 variants electrically but differs physically - PCB layout must use the UCSP-8 land pattern specified in Maxim's package drawing 21-0139.