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Home > Products > Integrated Circuits (ICs) > Logic > Translators, Level Shifters

Analog Devices Inc./Maxim Integrated MAX3397EELA+T

Name: MAX3397EELA+T
Brand: Analog Devices Inc./Maxim Integrated
SKU: MAX3397EELA+T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MAX3397EELA+T

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: Translators, Level Shifters

Package:

Datasheet:: MAX3397EELA+T.pdf

Description:: IC TRANSLTR BIDIRECTIONAL 8UDFN

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Product details

Overview

The MAX3397EELA+T from Maxim Integrated is a dual-channel, bidirectional ±15kV ESD-protected level translator enabling voltage-domain interoperability between 1.2V–5.5V logic systems. It supports simultaneous VL (1.2V–5.5V) and VCC (1.65V–5.5V) supplies, delivers guaranteed 8Mbps data rate across full voltage range, and features enable-controlled shutdown with <1µA quiescent current. It is deployed in I²C, SPI, and MICROWIRE interfaces bridging low-voltage microcontrollers to higher-voltage peripherals.

For engineers reviewing the MAX3397EELA+T datasheet, MAX3397EELA+T pinout, MAX3397EELA+T application, or MAX3397EELA+T equivalent, key selection criteria include bidirectional translation capability, ±15kV HBM ESD rating on VCC-side I/Os, 8-pin µDFN (2mm × 2mm) package compatibility, and guaranteed timing performance under push-pull and open-drain driving conditions.

Technical Context

The MAX3397EELA+T employs a transmission-gate architecture enabling true bidirectional signal flow (VL ↔ VCC) per channel without direction control pins. Its internal rise-time accelerators-active on both VL and VCC sides-enable up to 16Mbps operation when VL and VCC are constrained to 1.8V–3.3V.

It integrates thermal short-circuit protection that forces shutdown at 150°C junction temperature and resumes operation at 140°C. The device enters high-impedance tri-state when EN is low or when VCC falls >0.8V below VL, disconnecting internal 10kΩ pullups on all I/O lines to minimize leakage and support multidrop bus topologies.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Range VL	+1.2V to +5.5V - Enables interface with ultra-low-voltage ASICs/PLDs and 1.8V/2.5V/3.3V/5V domains.
Supply Range VCC	+1.65V to +5.5V - Supports legacy 3.3V/5V systems while maintaining compatibility with modern 1.8V–3.3V rails.
Data Rate (Guaranteed)	8Mbps over full VL/VCC range - Ensures reliable high-speed serial communication without derating for voltage combinations.
Data Rate (Enhanced)	16Mbps at +1.8V ≤ VL ≤ VCC ≤ +3.3V - Delivers optimal timing for common mixed-voltage industrial and portable designs.
ESD Protection (I/O VCC)	±15kV HBM, ±15kV IEC 61000-4-2 air-gap, ±8kV contact - Eliminates need for external TVS diodes in exposed signal paths.
Shutdown Current	<1µA total (VCC + VL) - Enables battery-powered systems to achieve multi-year standby life with active level translation disabled.
Operating Temperature	−40°C to +85°C - Qualified for extended industrial and automotive cabin environments without derating.

Pinout & Package

MAX3397EELA+T is housed in an 8-pin µDFN package (2mm × 2mm × 0.8mm), RoHS-compliant and lead-free, with wettable flanks for automated optical inspection. The package uses bottom-side thermal pad for enhanced power dissipation and requires standard reflow profile for lead-free soldering.

Pin/Terminal	Circuit Role	Design Meaning
1: I/O VCC2	Bi-directional I/O referenced to VCC	Second channel's high-voltage side signal line; supports push-pull or open-drain drivers; internally pulled up to VCC via 10kΩ resistor in normal mode.
2: GND	Ground reference	Common return path for VL, VCC, and I/O signals; must be low-inductance connection to minimize noise coupling and ESD transient impedance.
3: VL	Low-voltage supply input	Power rail for VL-side logic (1.2V–5.5V); requires 0.1µF ceramic bypass capacitor placed adjacent to pin; 1µF recommended for full ESD compliance.
4: I/O VL2	Bi-directional I/O referenced to VL	Second channel's low-voltage side signal line; compatible with 1.2V CMOS; high-impedance during shutdown or VCC undervoltage.
5: I/O VL1	Bi-directional I/O referenced to VL	First channel's low-voltage side signal line; electrically identical to I/O VL2; shares same VL supply and bias network.
6: EN	Enable/shutdown control input	Active-high logic input; drives high (≥VL − 0.2V) for normal operation; drives low (≤0.15V) to enter sub-1µA shutdown with tri-state I/Os.
7: VCC	High-voltage supply input	Power rail for VCC-side logic (1.65V–5.5V); requires 0.1µF ceramic + 1µF ceramic bypass; critical for ESD robustness and timing stability.
8: I/O VCC1	Bi-directional I/O referenced to VCC	First channel's high-voltage side signal line; supports 3.3V/5V logic families; output swing is 0.67×VCC (high) and ≤0.4V (low) under load.

Key Features

Feature	Design Value
Bidirectional translation per channel	Eliminates need for direction-control signals or external logic; enables seamless I²C/SPI clock/data bidirectional flow on single traces.
Rise-time accelerator circuitry	Reduces propagation delay skew to ≤10ns (typ) and enables 16Mbps operation within 1.8V–3.3V domain without external components.
±15kV ESD on VCC I/Os	Meets Level 4 IEC 61000-4-2 without external protection, reducing BOM count and PCB area in handheld and field-deployable equipment.
Thermal shutdown recovery	Automatically disables outputs at 150°C junction temp and restores functionality at 140°C-prevents latch-up and enables self-recovering fault tolerance.
Tri-state behavior on supply fault	Disables internal pullups and isolates I/Os when VCC drops >0.8V below VL or VL < 0.7V, preventing back-powering and bus contention in partial-power-down systems.

Applications

Smart Card Reader Interface	I²C Sensor Hub Translation
Use Scenario: Interfacing a 1.8V smart card controller with a 3.3V ISO 7816-compliant smart card slot. IC Role / Device Role / Timing Role: Bidirectional level translator for CLK, I/O, and RST lines; maintains I²C timing integrity with <15ns propagation delay skew between channels. Use Value: Enables direct integration without discrete MOSFET translators or voltage dividers, reducing component count by 6+ parts and eliminating timing mismatch risks.	Use Scenario: Connecting multiple 1.2V/1.8V environmental sensors (temperature, humidity) to a 3.3V host MCU over shared I²C bus. IC Role / Device Role / Timing Role: Dual-channel translator handling SDA and SCL simultaneously; supports 8Mbps push-pull drive for fast sensor polling cycles. Use Value: Guarantees signal integrity across voltage domains while preserving I²C arbitration and clock stretching behavior-no protocol modification required.
SPI Flash Memory Bridge	Portable POS System Data Link
Use Scenario: Level-shifting SPI commands and data between a 1.2V FPGA configuration manager and a 3.3V serial NOR flash memory. IC Role / Device Role / Timing Role: Translates MOSI, MISO, SCLK, and CS signals bidirectionally; supports 16Mbps operation at 1.8V/3.3V combination. Use Value: Achieves full flash programming speed without timing margin loss, avoiding 30–50% throughput penalty typical of passive resistor-based solutions.	Use Scenario: Enabling secure communication between a 1.8V payment processor SoC and 5V magnetic stripe reader hardware in handheld POS terminals. IC Role / Device Role / Timing Role: Isolates logic domains while passing EMV-compliant serial data; withstands ±15kV ESD events from user-contacted card slots. Use Value: Meets UL/IEC safety certification requirements for consumer-facing terminals without adding external ESD protection components.

Smart Card Reader Interface

I²C Sensor Hub Translation

Use Scenario: Interfacing a 1.8V smart card controller with a 3.3V ISO 7816-compliant smart card slot.

IC Role / Device Role / Timing Role: Bidirectional level translator for CLK, I/O, and RST lines; maintains I²C timing integrity with <15ns propagation delay skew between channels.

Use Value: Enables direct integration without discrete MOSFET translators or voltage dividers, reducing component count by 6+ parts and eliminating timing mismatch risks.

Use Scenario: Connecting multiple 1.2V/1.8V environmental sensors (temperature, humidity) to a 3.3V host MCU over shared I²C bus.

IC Role / Device Role / Timing Role: Dual-channel translator handling SDA and SCL simultaneously; supports 8Mbps push-pull drive for fast sensor polling cycles.

Use Value: Guarantees signal integrity across voltage domains while preserving I²C arbitration and clock stretching behavior-no protocol modification required.

SPI Flash Memory Bridge

Portable POS System Data Link

Use Scenario: Level-shifting SPI commands and data between a 1.2V FPGA configuration manager and a 3.3V serial NOR flash memory.

IC Role / Device Role / Timing Role: Translates MOSI, MISO, SCLK, and CS signals bidirectionally; supports 16Mbps operation at 1.8V/3.3V combination.

Use Value: Achieves full flash programming speed without timing margin loss, avoiding 30–50% throughput penalty typical of passive resistor-based solutions.

Use Scenario: Enabling secure communication between a 1.8V payment processor SoC and 5V magnetic stripe reader hardware in handheld POS terminals.

IC Role / Device Role / Timing Role: Isolates logic domains while passing EMV-compliant serial data; withstands ±15kV ESD events from user-contacted card slots.

Use Value: Meets UL/IEC safety certification requirements for consumer-facing terminals without adding external ESD protection components.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TXS0102DCUR	2-channel, 1.2V–3.6V VL, 1.65V–5.5V VCC; no integrated ESD beyond 2kV HBM; 60Mbps max but only at narrow 1.8V/3.3V window.	Lacks ±15kV IEC-rated ESD protection; requires external TVS for field-deployed equipment; not suitable for unshielded I/O routing.	Select when cost sensitivity outweighs ESD robustness and system-level protection is handled elsewhere.
SN74AVC2T244RSWR	2-bit non-inverting buffer with direction control; 1.2V–3.6V I/O; no bidirectional auto-sensing; 16mA drive strength vs. MAX3397E's 1mA.	Requires dedicated DIR pin and external pull-ups; unsuitable for I²C or other bidirectional buses without additional logic.	Choose only for unidirectional parallel data paths where direction is static and high drive strength is mandatory.

Compared with TXS0102DCUR and SN74AVC2T244RSWR, the MAX3397EELA+T uniquely combines true bidirectional auto-sensing, integrated ±15kV IEC-rated ESD, and guaranteed 8Mbps operation across its full voltage range-making it the only option qualified for compact, certified, and maintenance-free I²C/SPI bridge designs.

Availability

MAX3397EELA+T is available at Aetrix Electronics and suitable for portable POS systems, smart card readers, and I²C sensor hubs requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.

Supply support for MAX3397EELA+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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.

The MAX3397EELA+T belongs to Maxim's ESD-hardened interface product line, engineered specifically for robust, space-constrained voltage translation in battery-powered and field-exposed electronics where reliability and certification readiness are critical.

FAQ

What voltage ranges does the MAX3397EELA+T support on its VL and VCC supplies?

The MAX3397EELA+T supports VL from +1.2V to +5.5V and VCC from +1.65V to +5.5V. This allows interfacing ultra-low-voltage logic (e.g., 1.2V FPGA I/O) with legacy 5V peripherals. Operation requires VL < (VCC + 0.3V) to prevent damage; the device tolerates VL ≥ (VCC + 0.3V) during power-up without latch-up or degradation. The MAX3397EELA+T maintains full functionality across this entire range, including guaranteed 8Mbps data rate and ±15kV ESD protection.

Does the MAX3397EELA+T require external pull-up resistors for I²C operation?

No, the MAX3397EELA+T includes internal 10kΩ pull-up resistors on both I/O VL and I/O VCC lines in normal operation, eliminating the need for external pull-ups in standard I²C configurations. These resistors are automatically disconnected during shutdown (EN = low) or when VCC falls >0.8V below VL, placing I/Os in high-impedance state. For I²C buses with multiple devices or long traces, external pull-ups may still be added-but the MAX3397EELA+T itself provides functional baseline termination.

How does the MAX3397EELA+T behave when one supply is disconnected?

When VCC is disconnected or grounded while VL remains powered, the MAX3397EELA+T enters automatic shutdown: internal pull-ups disable, I/Os go high-impedance, and supply current drops below 1µA. I/O VL lines remain safe to drive, but translation to VCC side halts. Similarly, if VL falls below ~0.7V while VCC is active, the device shuts down. In both cases, the MAX3397EELA+T prevents back-powering and avoids bus contention-critical for power-gated subsystems in portable electronics.

Can the MAX3397EELA+T support 16Mbps data rates across its full voltage range?

No-the 16Mbps data rate is only guaranteed when +1.8V ≤ VL ≤ VCC ≤ +3.3V. Across the full voltage range (+1.2V to +5.5V for VL, +1.65V to +5.5V for VCC), the MAX3397EELA+T guarantees 8Mbps. Higher speeds are achievable in narrower voltage windows due to optimized rise-time accelerator response, but timing margins degrade outside the 1.8V–3.3V band. Designers must consult the Timing Characteristics table in the MAX3397EELA+T datasheet to validate setup/hold and propagation delay for their specific VL/VCC pair.

What is the thermal protection behavior of the MAX3397EELA+T during short-circuit events?

The MAX3397EELA+T incorporates thermal-overload detection that triggers shutdown when junction temperature reaches +150°C. Upon activation, all I/Os enter high-impedance state and supply current drops below 1µA. Normal operation resumes automatically once the die cools to +140°C-no external reset or power cycle is needed. This self-recovering behavior ensures continuous system uptime in transient fault conditions and distinguishes the MAX3397EELA+T from competing parts that may latch up and require forced power-down.

MAX3397EELA+T Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc./Maxim Integrated

Series:: -

Package/Case:

Packaging:: Tape & Reel (TR)

Product Status:: Active

Translator Type:: Voltage Level

Channel Type:: Bidirectional

Number of Circuits:: 1

Channels per Circuit:: 2

Voltage - VCCA:: 1.2 V ~ 5.5 V

Voltage - VCCB:: 1.65 V ~ 5.5 V

Input Signal:: -

Output Signal:: -

Output Type:: Open Drain, Tri-State

Data Rate:: 16Mbps

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Features:: Power Supply Decoupling, Thermal-Shutdown Protection

Mounting Type:: Surface Mount

Supplier Device Package:: 8-WFDFN

MAX3397EELA+T FAQ

1.How can I place an order for MAX3397EELA+T through Aetrix?

Please submit a Request for Quotation (RFQ) for MAX3397EELA+T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for MAX3397EELA+T reliable?

The price and inventory of MAX3397EELA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX3397EELA+T is usually 5 days.

3.What payment methods are accepted for MAX3397EELA+T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX3397EELA+T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MAX3397EELA+T?

MAX3397EELA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MAX3397EELA+T order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for MAX3397EELA+T?

For technical support, including MAX3397EELA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX3397EELA+T requirements.

6.How does Aetrix verify that MAX3397EELA+T is sourced from the original manufacturer or authorized distributors?

All MAX3397EELA+T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX3397EELA+T meets industry standards.

7.What is the process for return or replacement of MAX3397EELA+T?

All MAX3397EELA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX3397EELA+T, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The MAX3397EELA+T part is unused and in its original packaging.

Return procedure for MAX3397EELA+T:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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