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Analog Devices Inc./Maxim Integrated MAX3391EEBC
- Part No.:
- MAX3391EEBC
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
MAX3391EEBC.pdf
- Description:
- DUAL LOW-VOLT LEVEL TRANSLATOR
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MAX3391EEBC from Maxim Integrated is a quad bidirectional ±15kV ESD-protected level translator enabling voltage-level shifting between 1.2V and 5.5V logic domains (VL) and 1.65V–5.5V domains (VCC). It supports guaranteed 8Mbps data rate across full voltage range, features ultra-low 1µA three-state supply current, and operates in 14-pin TDFN (3mm × 3mm) package. It is used in portable communication devices requiring robust I²C/SPI signal translation between low-voltage microcontrollers and higher-voltage peripherals.
For engineers reviewing the MAX3391EEBC datasheet, MAX3391EEBC pinout, MAX3391EEBC application, or MAX3391EEBC equivalent, key selection criteria include bidirectional translation capability, 1.2V VL compatibility, ±15kV HBM ESD rating on VCC-side I/Os, thermal short-circuit protection, and support for 16Mbps operation under +1.8V ≤ VL ≤ VCC ≤ +2.5V conditions.
Technical Context
The MAX3391EEBC employs a transmission-gate-based bidirectional architecture that enables seamless level translation in both VL ↔ VCC directions on each of its four independent channels. Its speed-up circuitry includes edge- and level-sensitive rise-time accelerators on both sides, reducing propagation delay to 15ns at 16Mbps under optimized voltage conditions.
It integrates thermal overload detection that forces automatic entry into three-state mode when junction temperature reaches +152°C, resuming normal operation at +142°C. The device requires no external pullups and maintains high-impedance I/O states during three-state mode with leakage <1µA per supply rail.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Direction | Bidirectional (VL ↔ VCC) - enables shared-bus applications like I²C without direction control pins |
| VL Supply Range | +1.2V to +5.5V - supports direct interface with 1.2V/1.8V/2.5V/3.3V ASICs and PLDs |
| VCC Supply Range | +1.65V to +5.5V - compatible with 1.8V/2.5V/3.3V/5V systems and mixed-voltage backplanes |
| Max Data Rate | 16Mbps (at +1.8V ≤ VL ≤ VCC ≤ +2.5V) - meets high-speed SPI timing requirements in portable designs |
| ESD Protection | ±15kV HBM on I/O VCC pins - eliminates need for external TVS diodes in handheld product interfaces |
| Three-State Current | <1µA total supply current - enables zero-power bus isolation in battery-powered sleep modes |
| Propagation Delay | 15ns (typ, +2.5V domain) - ensures sub-62.5ns timing margin for 16Mbps clocked interfaces |
Pinout & Package
MAX3391EEBC is housed in a 14-pin TDFN package (3mm × 3mm, exposed pad), optimized for space-constrained portable electronics. Pin functions are referenced to either VL or VCC supply domains, with dedicated THREE-STATE enable referenced to VL.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| I/O VL1–VL4 | Low-voltage bidirectional I/O | Referenced to VL; accepts 1.2V logic, drives VL-compatible outputs; supports open-drain or push-pull |
| I/O VCC1–VCC4 | High-voltage bidirectional I/O | Referenced to VCC; translates VL signals to VCC levels and vice versa; ±15kV HBM protected |
| VCC | High-side supply input | +1.65V to +5.5V power rail; powers VCC-side logic and I/O drivers; decoupling capacitor required |
| VL | Low-side supply input | +1.2V to +5.5V logic reference; sets thresholds for VL-side inputs and output drive strength |
| THREE-STATE | Enable input (VL-referenced) | Pull low to place all eight I/Os in high-impedance state; reduces total supply current to <1µA |
| GND | Analog/digital ground | Common return path; must be connected to system ground plane; EP tied to GND for thermal performance |
| EP | Exposed thermal pad | Internally connected to GND; soldering pad improves thermal dissipation and EMI shielding |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional translation | Eliminates direction-control logic and external MOSFETs in I²C/SMBus applications |
| Rise-time accelerators | Reduces tR/tF to ≤15ns at 16Mbps, enabling clean signal edges without external RC networks |
| Thermal short-circuit protection | Auto-recovers from overtemperature faults without host intervention or reset signaling |
| 1.2V VL compatibility | Direct interface with advanced low-power SoCs and FPGA I/O banks without level-shifter staging |
| Ultra-low three-state current | Enables true zero-power bus parking in always-on IoT sensor nodes and wearable sleep states |
Applications
| Smart Card Readers | Portable POS Systems |
|---|---|
Use Scenario: Translating contactless smart card interface signals (ISO/IEC 14443 Type A/B) between 1.8V secure element and 3.3V host controller. IC Role / Device Role / Timing Role: Bidirectional level shifter for CLK, DATA, and RST lines; maintains strict ISO timing margins under 16Mbps burst transfers. Use Value: Eliminates discrete MOSFET solutions and reduces BOM count by 4× while retaining ±15kV ESD robustness required for public-access terminals. | Use Scenario: Interfacing 1.2V/1.8V payment processor SoC with 3.3V display driver, NFC transceiver, and USB PHY. IC Role / Device Role / Timing Role: Quad-channel voltage translator supporting concurrent I²C (display), SPI (NFC), and UART (USB bridge) level shifting. Use Value: Single-chip solution replaces three separate translators, saving 22 mm² PCB area and simplifying layout routing in compact handheld enclosures. |
| Cell Phones | GPS Modules |
Use Scenario: Level-shifting camera sensor interface (MIPI D-PHY auxiliary I²C) between 1.2V image signal processor and 2.8V camera module. IC Role / Device Role / Timing Role: Bidirectional translator handling SCL/SDA with sub-100ns propagation delay to meet MIPI I²C timing budget. Use Value: Guarantees reliable communication at 400kHz+ speeds while surviving 15kV ESD events common in consumer handling environments. | Use Scenario: Translating NMEA 0183 serial data and PPS timing pulse between 1.8V GPS baseband IC and 3.3V host MCU. IC Role / Device Role / Timing Role: Unidirectional (TX) and bidirectional (PPS sync) translation channel; supports 115.2kbps UART with <1µs skew. Use Value: Maintains nanosecond-level PPS edge accuracy across voltage domains, critical for time-synchronized IoT node deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional level translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TXS0104E | 4-channel, 1.65V–5.5V VL/VCC range; 60Mbps max; no integrated thermal protection; 1.2V VL not supported | Targeted at high-speed industrial buses; lacks ±15kV HBM rating on VCC I/Os | Choose TXS0104E only if >8Mbps operation is mandatory and 1.2V VL interface is unnecessary |
| SN74AVC4T245 | 4-channel, 1.2V–3.6V VL/VCC; 32mA drive; no ESD beyond standard HBM; no thermal shutdown | Designed for board-to-board interconnect; requires external ESD protection for handheld use | Select SN74AVC4T245 when cost sensitivity outweighs field reliability requirements and external TVS diodes are acceptable |
Compared with TXS0104E and SN74AVC4T245, MAX3391EEBC uniquely combines 1.2V VL compatibility, ±15kV HBM on VCC I/Os, and autonomous thermal protection-making it the only qualified option for ruggedized portable designs where ESD survival and fault resilience are non-negotiable.
Availability
MAX3391EEBC is available at Aetrix Electronics and suitable for portable communication devices, smart card readers, and GPS modules requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for MAX3391EEBC 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 demanding industrial, automotive, and communications applications.
The MAX3372E–MAX3393E family was engineered specifically for multivoltage system interoperability in battery-powered portable electronics, emphasizing ESD resilience, ultra-low quiescent current, and flexible bidirectional translation without direction control overhead.
FAQ
What voltage ranges does the MAX3391EEBC support on its VL and VCC supplies?
The MAX3391EEBC supports VL from +1.2V to +5.5V and VCC from +1.65V to +5.5V, with the constraint that VL must not exceed VCC + 0.3V. This allows direct interfacing with 1.2V logic cores and 3.3V/5V peripherals. Operation at the 1.2V VL minimum is fully specified and guaranteed across temperature, making MAX3391EEBC suitable for next-generation ultra-low-power SoCs.
Does the MAX3391EEBC require external pullup resistors for I²C bus operation?
No, the MAX3391EEBC does not require external pullup resistors for I²C operation. Its internal architecture provides active drive capability on both VL and VCC sides, eliminating the need for external pullups. This simplifies design, reduces component count, and avoids timing uncertainty introduced by external RC networks-key advantages confirmed in the MAX3391EEBC functional description and timing characterization.
How does the thermal protection feature operate in the MAX3391EEBC?
The MAX3391EEBC incorporates autonomous thermal short-circuit protection: when junction temperature reaches +152°C, it automatically enters three-state mode, forcing all I/Os into high-impedance and reducing supply current to <1µA. Normal operation resumes once temperature drops to +142°C. This behavior is fully characterized and documented in the MAX3391EEBC datasheet's Thermal Short-Circuit Protection section.
Can the MAX3391EEBC translate signals between 1.8V and 5V logic domains reliably?
Yes, the MAX3391EEBC supports translation between 1.8V (VL) and 5V (VCC) domains within its specified operating ranges. Electrical characteristics-including VOHC, VOLC, VIHC, and VILC-are guaranteed across the full VL (1.2V–5.5V) and VCC (1.65V–5.5V) ranges. The MAX3391EEBC datasheet confirms valid operation at VL = +1.8V and VCC = +5.0V, with propagation delay <1000ns and ESD protection intact.
What is the maximum guaranteed data rate for the MAX3391EEBC across its full voltage range?
The MAX3391EEBC guarantees 8Mbps operation across its entire specified voltage range (+1.2V ≤ VL ≤ VCC ≤ +5.5V). At narrower voltage windows-specifically +1.8V ≤ VL ≤ VCC ≤ +2.5V and +2.5V ≤ VL ≤ VCC ≤ +3.3V-it achieves 16Mbps, as verified in the Timing Characteristics table of the MAX3391EEBC datasheet. These rates are measured with CLOAD = 15pF and driver impedance ≤50Ω.
MAX3391EEBC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- Packaging:
- Bulk
- Product Status:
- Active
- Translator Type:
- Voltage Level
- Channel Type:
- Unidirectional
- Number of Circuits:
- 1
- Channels per Circuit:
- 4
- Voltage - VCCA:
- 1.65 V ~ 5.5 V
- Voltage - VCCB:
- 1.2 V ~ 5.5 V
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- Tri-State, Non-Inverted
- Data Rate:
- 8Mbps
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-WFBGA, CSPBGA
MAX3391EEBC FAQ
1.How can I place an order for MAX3391EEBC through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX3391EEBC 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 MAX3391EEBC reliable?
The price and inventory of MAX3391EEBC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX3391EEBC is usually 5 days.
3.What payment methods are accepted for MAX3391EEBC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX3391EEBC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX3391EEBC?
MAX3391EEBC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX3391EEBC 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 MAX3391EEBC?
For technical support, including MAX3391EEBC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX3391EEBC requirements.
6.How does Aetrix verify that MAX3391EEBC is sourced from the original manufacturer or authorized distributors?
All MAX3391EEBC 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 MAX3391EEBC meets industry standards.
7.What is the process for return or replacement of MAX3391EEBC?
All MAX3391EEBC units undergo pre-shipment inspection (PSI). If there is an issue with MAX3391EEBC, 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 MAX3391EEBC part is unused and in its original packaging.
Return procedure for MAX3391EEBC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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