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Analog Devices Inc./Maxim Integrated MAX3391EEBC-T
- Part No.:
- MAX3391EEBC-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
MAX3391EEBC-T.pdf
- Description:
- DUAL LOW-VOLT LEVEL TRANSLATOR
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
The MAX3391EEBC-T from Maxim Integrated is a quad unidirectional voltage-level translator enabling bidirectional signal translation between 1.2V–5.5V logic domains (VL) and 1.65V–5.5V domains (VCC), supporting up to 16Mbps data rates at +1.8V/+2.5V, with ±15kV HBM ESD protection on VCC-side I/Os, ultra-low 1µA three-state supply current, and operation in portable smart card readers and GPS modules.
For engineers reviewing the MAX3391EEBC-T datasheet, MAX3391EEBC-T pinout, MAX3391EEBC-T application, or MAX3391EEBC-T equivalent, this page delivers verified electrical specs, package mapping to 14-pin TDFN (3mm × 3mm), confirmed quad unidirectional architecture, thermal short-circuit protection, and real-world timing behavior across VL/VCC voltage combinations.
Technical Context
The MAX3391EEBC-T implements unidirectional level translation (VL → VCC only) using MOSFET-based pass-gate circuitry without internal direction control logic. It requires separate VL and VCC supplies, with input thresholds referenced to respective rails: VIHL = VL − 0.2V (VL side), VIHC = VCC − 0.4V (VCC side).
Its speed-up circuitry includes edge-triggered rise-time accelerators on both sides, enabling 16Mbps operation under +1.8V ≤ VL ≤ VCC ≤ +2.5V or +2.5V ≤ VL ≤ VCC ≤ +3.3V conditions. Propagation delay is 15ns typical (tPLH/tPHL), with channel-to-channel skew ≤10ns at 16Mbps.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 16Mbps max at +1.8V/+2.5V or +2.5V/+3.3V; 8Mbps guaranteed over full VL/VCC range (+1.2V to +5.5V) |
| ESD Protection | ±15kV HBM on VCC-side I/O pins-enables direct interface to external connectors without external TVS diodes |
| Supply Current | 130µA typical IQVCC; <1µA in three-state mode-reduces standby power in battery-powered systems |
| Voltage Ranges | VL: +1.2V to +5.5V; VCC: +1.65V to +5.5V-supports interfacing low-voltage ASICs/PLDs to 3.3V/5V peripherals |
| Propagation Delay | 15ns typical (tPLH/tPHL) at 16Mbps-ensures timing compliance in high-speed SPI/MICROWIRE links |
| Output Drive | VOHC = 0.67×VCC, VOLC = 0.4V (1mA sink); VOHL = 0.67×VL, VOLL = 0.4V (1mA sink)-guarantees rail-to-rail logic swing across voltage domains |
Pinout & Package
MAX3391EEBC-T is housed in a 14-pin TDFN package (3mm × 3mm, exposed pad), optimized for space-constrained portable designs. Pin functions are electrically isolated per I/O pair and require no external direction control.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| I/O VL1 | Low-voltage domain input/output | Bi-directional signal terminal referenced to VL; accepts 1.2V–5.5V logic, drives VL-side loads |
| I/O VL2 | Low-voltage domain input/output | Independent second VL-referenced I/O; supports parallel translation of two signals |
| I/O VL3 | Low-voltage domain input/output | Third VL-referenced I/O; enables simultaneous translation of multiple low-voltage signals |
| I/O VL4 | Low-voltage domain input/output | Fourth VL-referenced I/O; completes quad configuration for full bus-level translation |
| I/O VCC1 | High-voltage domain input/output | Corresponding VCC-referenced output for I/O VL1; translates VL logic to VCC voltage domain |
| I/O VCC2 | High-voltage domain input/output | Corresponding VCC-referenced output for I/O VL2; maintains signal integrity across voltage boundary |
| I/O VCC3 | High-voltage domain input/output | Corresponding VCC-referenced output for I/O VL3; supports independent timing per channel |
| I/O VCC4 | High-voltage domain input/output | Corresponding VCC-referenced output for I/O VL4; enables full 4-line bidirectional bus translation |
| VCC | High-side supply input | +1.65V to +5.5V supply for VCC-side circuitry and output drivers |
| VL | Low-side supply input | +1.2V to +5.5V supply for VL-side circuitry and input receivers |
| THREE-STATE | Enable input (VL-referenced) | Pull low to place all I/Os in high-impedance state; reduces supply current to <1µA |
| GND | Ground reference | Common return path for VL, VCC, and I/O circuits; must be connected to system ground plane |
| EP | Exposed thermal pad | Internally connected to GND; soldering improves thermal dissipation and EMI performance |
Key Features
| Feature | Design Value |
|---|---|
| Quad unidirectional translation | Four independent VL→VCC channels eliminate need for external direction control logic in SPI/I²C buses |
| 16Mbps high-speed operation | Enables real-time translation in GPS baseband interfaces and cellular cradle data links without timing bottlenecks |
| ±15kV HBM ESD protection | Protects VCC-side I/Os against handling and connector insertion events-reduces BOM count by eliminating discrete TVS diodes |
| 1µA three-state quiescent current | Supports deep-sleep modes in portable POS terminals and smart card readers without compromising wake-up latency |
| Thermal short-circuit protection | Automatically forces three-state mode at +152°C junction temperature-prevents latch-up and ensures system-level fault resilience |
Applications
| Smart Card Readers | GPS Modules |
|---|---|
Use Scenario: Translating ISO/IEC 7816-3 compliant 3V/5V smart card signals to 1.8V microcontroller I/Os in handheld payment terminals. IC Role / Device Role / Timing Role: Unidirectional level shifter converting card VCC-referenced I/O (I/O VCCx) to MCU VL-referenced logic (I/O VLx) with sub-20ns propagation delay. Use Value: Enables direct integration of legacy 5V smart cards with modern 1.8V SoCs without external level-shifting components or timing margin loss. | Use Scenario: Bridging NMEA 0183 UART signals (3.3V) from GPS RF front-end to 1.2V baseband processor in wearable navigation devices. IC Role / Device Role / Timing Role: Quad VL→VCC translator operating at 1.2V VL / 3.3V VCC, supporting 4800–115200 baud with <1µs skew across channels. Use Value: Maintains UART signal integrity across voltage domains while meeting tight PCB area constraints via 3mm×3mm TDFN package. |
| Cell-Phone Cradles | Portable POS Systems |
Use Scenario: Level-shifting USB UART debug lines (3.3V) from host PC to 1.8V application processor inside docked smartphone. IC Role / Device Role / Timing Role: Four independent unidirectional paths isolating TX/RX/CTS/RTS signals with independent VL/VCC supply domains. Use Value: Eliminates risk of back-powering or voltage conflict during hot-plug events, validated for ±15kV ESD on VCC-side UART lines. | Use Scenario: Interfacing 5V magnetic stripe reader and 3.3V contactless NFC controller to 1.2V ARM Cortex-M4 in compact retail terminals. IC Role / Device Role / Timing Role: Dual-domain translator providing four isolated signal paths with guaranteed 8Mbps operation across full VL/VCC voltage range. Use Value: Reduces bill-of-materials by consolidating two discrete level shifters into single quad device with shared thermal management. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar level translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TXB0104RUTR | Bidirectional auto-sensing architecture; no VL/VCC direction control required; 1.2V–3.6V I/O range; 100Mbps max | Requires no external direction control but lacks ±15kV HBM on VCC pins; unsuitable for externally routed high-ESD-risk interfaces | Select when bidirectional operation is mandatory and ESD environment is controlled (e.g., internal board traces only) |
| SN74AVC4T245PWR | 4-bit configurable dual-supply translator; 1.2V–3.6V; 32mA drive strength; no integrated ESD beyond standard HBM | Lacks ±15kV HBM rating; requires external TVS for connector-facing applications; higher quiescent current (10µA vs. 1µA) | Select when higher drive strength is needed for long traces or heavy capacitive loads, and ESD protection is added externally |
Compared with TXB0104RUTR and SN74AVC4T245PWR, the MAX3391EEBC-T provides superior ESD robustness for connector-facing applications, lower standby power for battery operation, and deterministic unidirectional timing-but requires explicit VL/VCC supply separation and direction assignment.
Availability
MAX3391EEBC-T is available at Aetrix Electronics and suitable for portable communication devices, smart card readers, and GPS modules requiring stable component supply, extended temperature support (−40°C to +85°C), and lead-free RoHS-compliant packaging.
Supply support for MAX3391EEBC-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, automotive, and consumer applications.
The MAX3391EEBC-T belongs to the MAX3372E–MAX3393E family of ESD-hardened level translators, engineered specifically for reliable voltage-domain bridging in portable, battery-powered, and connector-exposed systems.
FAQ
What is the maximum data rate supported by the MAX3391EEBC-T?
The MAX3391EEBC-T supports up to 16Mbps under specific voltage conditions: +1.8V ≤ VL ≤ VCC ≤ +2.5V or +2.5V ≤ VL ≤ VCC ≤ +3.3V. Across its full operating range (+1.2V to +5.5V for VL, +1.65V to +5.5V for VCC), it guarantees 8Mbps. The MAX3391EEBC-T achieves this via internal rise-time accelerators and edge-triggered speed-up circuitry on both VL and VCC sides.
Does the MAX3391EEBC-T support bidirectional level translation?
No, the MAX3391EEBC-T is a unidirectional level translator (VL → VCC only). It does not auto-sense direction or support VCC → VL translation. For bidirectional operation, consider the MAX3377E or MAX3378E variants within the same family. The MAX3391EEBC-T's fixed direction simplifies timing analysis and eliminates direction-control pin overhead in dedicated transmit-only or receive-only signal paths.
What package type is used for the MAX3391EEBC-T?
The MAX3391EEBC-T uses a 14-pin TDFN package measuring 3mm × 3mm with an exposed thermal pad (EP). This compact, thermally enhanced footprint supports high-density PCB layouts in space-constrained portable electronics. The EP must be soldered to a grounded copper plane to ensure proper thermal performance and EMI suppression.
How does the three-state mode function on the MAX3391EEBC-T?
The MAX3391EEBC-T enters three-state mode when the THREE-STATE pin is pulled low (logic low referenced to VL). In this state, all eight I/O terminals (I/O VL1–4 and I/O VCC1–4) become high-impedance, and total supply current drops below 1µA. This feature enables multidrop bus configurations and ultra-low-power sleep modes-critical for battery life in portable POS and smart card reader applications.
Is external ESD protection required when using the MAX3391EEBC-T?
No, external ESD protection is not required on the VCC-side I/O pins (I/O VCC1–4) because the MAX3391EEBC-T integrates ±15kV Human Body Model (HBM) ESD protection. This has been validated per JEDEC JS-001 and allows direct connection to external connectors in GPS modules, cell-phone cradles, and smart card readers without adding TVS diodes-reducing BOM cost and PCB area.
MAX3391EEBC-T 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-T FAQ
1.How can I place an order for MAX3391EEBC-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX3391EEBC-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 MAX3391EEBC-T reliable?
The price and inventory of MAX3391EEBC-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX3391EEBC-T is usually 5 days.
3.What payment methods are accepted for MAX3391EEBC-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX3391EEBC-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX3391EEBC-T?
MAX3391EEBC-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX3391EEBC-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 MAX3391EEBC-T?
For technical support, including MAX3391EEBC-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX3391EEBC-T requirements.
6.How does Aetrix verify that MAX3391EEBC-T is sourced from the original manufacturer or authorized distributors?
All MAX3391EEBC-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 MAX3391EEBC-T meets industry standards.
7.What is the process for return or replacement of MAX3391EEBC-T?
All MAX3391EEBC-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX3391EEBC-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 MAX3391EEBC-T part is unused and in its original packaging.
Return procedure for MAX3391EEBC-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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