Analog Devices Inc./Maxim Integrated MAX3377EEUD+T

Overview

The MAX3377EEUD+T from Maxim Integrated is a quad bidirectional logic-level translator enabling voltage-domain interoperability between +1.2V–+5.5V VL and +1.65V–+5.5V VCC systems, with guaranteed 230kbps data rate, ±15kV HBM ESD protection on VCC-side I/Os, and 1μA three-state supply current-used in SPI/I²C interfaces between low-voltage microcontrollers and higher-voltage peripherals.

For engineers reviewing the MAX3377EEUD+T datasheet, MAX3377EEUD+T pinout, MAX3377EEUD+T application, or MAX3377EEUD+T equivalent, key selection criteria include bidirectional translation capability, slew-rate-limited 230kbps operation for EMI control, thermal short-circuit protection, and compatibility with UCSP/TDFN-14 packages in space-constrained portable designs.

Technical Context

The MAX3377EEUD+T implements a transmission-gate-based bidirectional architecture (VL ↔ VCC), supporting simultaneous level shifting across four independent channels without direction-control pins. It operates with separate VL and VCC supplies, accepts VL as low as +1.2V, and guarantees timing performance up to 230kbps under all specified voltage combinations.

Its three-state output mode-enabled by a VL-referenced THREE-STATE pin-reduces total supply current to <1μA while placing all I/Os in high-impedance state, enabling multidrop bus configurations. Thermal shutdown activates at +152°C junction temperature and recovers autonomously at +142°C.

Key Specifications

Pinout & Package

MAX3377EEUD+T is packaged in a 14-pin TDFN (3mm × 3mm) with exposed pad, optimized for thermal dissipation and PCB area efficiency in portable electronics.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TXB0104RUTR and SN74AVC4T245PWR, the MAX3377EEUD+T uniquely combines bidirectional operation without control pins, ±15kV HBM ESD robustness on VCC I/Os, and thermal fault recovery-making it optimal for compact, safety-critical portable interfaces where reliability trumps raw speed.

Availability

MAX3377EEUD+T is available at Aetrix Electronics and suitable for smart card readers, portable POS terminals, cell-phone cradles, and GPS modules requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for MAX3377EEUD+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) designs precision analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.

The MAX3372E–MAX3379E family delivers ESD-hardened, low-power level translation for multivoltage embedded systems-specifically targeting portable, battery-operated, and space-constrained designs where voltage domain bridging must coexist with robustness and minimal footprint.

FAQ

What is the maximum capacitive load supported by MAX3377EEUD+T at its guaranteed 230kbps data rate?

The MAX3377EEUD+T guarantees 230kbps operation with up to 50pF load capacitance per channel, as validated in the Timing Characteristics table under C_LOAD = 50pF conditions. Exceeding this value increases propagation delay and may violate setup/hold timing in high-speed SPI or I²C implementations. Layout best practices recommend minimizing trace length and avoiding stubs to maintain signal integrity within this limit.

Does MAX3377EEUD+T require external pull-up resistors on its I/O lines?

No, the MAX3377EEUD+T does not require external pull-up resistors. Its internal architecture uses transmission gates and bias circuitry that inherently manage signal levels without external passive components. This eliminates BOM cost and board space associated with discrete pull-ups-particularly beneficial in quad-channel applications where eight external resistors would otherwise be needed.

Can MAX3377EEUD+T translate between 1.2V and 5V logic domains reliably?

Yes, the MAX3377EEUD+T supports VL from +1.2V to +5.5V and VCC from +1.65V to +5.5V, with the constraint that VL ≤ VCC + 0.3V. A 1.2V VL to 5V VCC configuration is valid and tested-enabling direct interface between ultra-low-power sensors and legacy 5V peripherals while maintaining 230kbps timing compliance and ±15kV ESD protection on the 5V side.

How does the three-state mode function on MAX3377EEUD+T, and what is its impact on system power?

The THREE-STATE pin on MAX3377EEUD+T is VL-referenced and active-low: pulling it low places all eight I/Os (I/O VL1–4 and I/O VCC1–4) in high-impedance state and reduces total supply current to <1μA. This enables true zero-power isolation in battery-backed systems-critical for portable POS terminals that must retain memory state while disabling communication buses during idle periods.

Is MAX3377EEUD+T compatible with I²C open-drain signaling?

Yes, MAX3377EEUD+T supports I²C open-drain operation through its bidirectional architecture and inherent voltage threshold compatibility. When used with standard I²C pull-ups on either side, it correctly translates SDA/SCL signals between VL and VCC domains without signal inversion or timing distortion-validated in the Applications section for I²C Level Translation and confirmed by its VOHL/VOLL specifications matching I²C logic thresholds.