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Analog Devices Inc./Maxim Integrated MAX3379EEUD+T
- Part No.:
- MAX3379EEUD+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
MAX3379EEUD+T.pdf
- Description:
- IC TRANSLATOR UNIDIR 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,705
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Product details
Overview
The MAX3379EEUD+T from Maxim Integrated is a quad unidirectional logic-level translator enabling voltage-domain bridging between low-voltage (VL = +1.2V to +5.5V) and higher-voltage (VCC = +1.65V to +5.5V) digital systems. It supports guaranteed 8Mbps data rate across full voltage range, delivers ±15kV HBM ESD protection on VCC-side I/Os, consumes only 130µA typical supply current, and features three-state output mode with <1µA quiescent draw - ideal for SPI/I²C interfacing in portable POS terminals and smart card readers.
For engineers reviewing the MAX3379EEUD+T datasheet, MAX3379EEUD+T pinout, MAX3379EEUD+T application, or MAX3379EEUD+T equivalent, key selection criteria include its unidirectional VL→VCC translation direction, 14-pin TDFN-EP package with exposed pad, thermal short-circuit protection, slew-rate-limited 8Mbps timing performance, and compatibility with 1.2V–3.3V/1.65V–5.5V dual-supply configurations.
Technical Context
The MAX3379EEUD+T implements fixed-direction level shifting using MOSFET-based pass-gate architecture optimized for VL→VCC translation only. Its input thresholds are referenced to VL (VIHL = VL − 0.2V, VILL = 0.15V) and VCC (VIHC = VCC − 0.4V, VILC = 0.15V), ensuring robust noise immunity across operating voltages. Output drive strength is specified at 20µA source / 1mA sink for VOH/VOL compliance.
Three-state control is VL-referenced: pulling the THREE-STATE pin low disables both I/O VL_ and I/O VCC_ outputs into high-impedance mode, disconnecting internal 10kΩ pullups and reducing total supply current to <1µA. Thermal shutdown activates at TJ = +152°C and recovers at +142°C, providing fault resilience during sustained overloads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range (VL) | +1.2V to +5.5V - enables interface with ultra-low-voltage ASICs, PLDs, and battery-powered peripherals. |
| Supply Voltage Range (VCC) | +1.65V to +5.5V - supports legacy 3.3V/5V systems while maintaining compatibility with modern 1.8V interfaces. |
| Guaranteed Data Rate | 8Mbps over full VL/VCC range - ensures reliable high-speed SPI/MICROWIRE communication without timing margin violations. |
| ESD Protection (I/O VCC) | ±15kV HBM - eliminates need for external TVS diodes in handheld and field-deployable equipment. |
| Quiescent Supply Current | 130µA typ (IQVCC) - minimizes system power budget in always-on or low-duty-cycle applications. |
| Three-State Supply Current | <1µA - allows safe multidrop bus operation and zero-power idle states in shared signal environments. |
| Propagation Delay | 4ns to 30ns (I/OVL→VCC) - enables sub-10ns timing closure for 100MHz clock domains with 25pF load. |
Pinout & Package
The MAX3379EEUD+T is housed in a 14-pin TDFN-EP (3mm × 3mm) package with exposed thermal pad (EP), optimized for space-constrained portable designs and efficient heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 14) | High-side supply input | Power rail for VCC-referenced I/Os; must be ≥1.65V and ≤5.5V; decoupling capacitor required for ESD robustness. |
| VL (Pin 3) | Low-side supply input | Reference for VL-side logic thresholds and I/O levels; supports down to +1.2V; must satisfy VL ≤ VCC + 0.3V. |
| THREE-STATE (Pin 8) | Output enable control | VL-referenced active-low signal; drives I/O VL_ and I/O VCC_ into high-Z state when low; connect to VL for normal operation. |
| GND (Pin 7) | Ground reference | Common return path for both supply domains; must be connected to system ground plane with low-inductance path. |
| I/O VL1–VL4 (Pins 2,4,5,6) | Low-voltage bidirectional data ports | Input/output pins referenced to VL; accept standard CMOS logic levels; internally terminated with 10kΩ pullups disabled in three-state mode. |
| I/O VCC1–VCC4 (Pins 1,12,11,10) | High-voltage unidirectional outputs | Level-shifted outputs referenced to VCC; driven only from VL-side inputs (VL→VCC direction); no reverse driving capability. |
| N.C. (Pins 9,13) | No connection | Not internally bonded; must remain unconnected on PCB to avoid parasitic coupling or latch-up risk. |
| EP | Exposed thermal pad | Internally connected to GND; must be soldered to solid ground plane for thermal management and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional VL→VCC translation | Eliminates contention risk in master-slave SPI buses where directionality is fixed and simplifies signal routing vs. bidirectional alternatives. |
| 14-pin TDFN-EP package | 3mm × 3mm footprint with exposed pad reduces board area by >50% vs. TSSOP-14 while improving thermal resistance by 40%. |
| Rise-time acceleration circuitry | Enables 16Mbps operation under specific voltage conditions (+1.8V≤VL≤VCC≤+2.5V or +2.5V≤VL≤VCC≤+3.3V) without external components. |
| Thermal short-circuit protection | Automatically forces three-state mode at +152°C junction temperature, preventing permanent damage during sustained overload events. |
| Slew-rate limiting | Reduces EMI emissions by controlling edge rates - critical for FCC/CE compliance in portable wireless devices. |
Applications
| SPI Level Translation | I²C Level Translation |
|---|---|
Use Scenario: Interfacing a 1.8V microcontroller SPI master with a 3.3V sensor peripheral in a wearable health monitor. IC Role / Device Role / Timing Role: Translates MOSI, MISO, SCLK, and CS signals unidirectionally from 1.8V domain to 3.3V domain with matched propagation delay across all four channels. Use Value: Enables direct connection without external resistors or voltage dividers, preserving 8Mbps throughput and minimizing PCB layer count. | Use Scenario: Connecting a 1.2V FPGA I²C controller to a 3.3V EEPROM in an industrial IoT gateway. IC Role / Device Role / Timing Role: Acts as open-drain-compatible level shifter for SDA/SCL lines, supporting bidirectional protocol behavior via external pull-ups on VCC side. Use Value: Maintains I²C timing integrity with <30ns propagation delay and eliminates bus contention during arbitration phases. |
| Smart Card Reader Interface | Portable POS Terminal |
Use Scenario: Bridging a 3.3V secure element to a 1.2V baseband processor in a contactless payment module. IC Role / Device Role / Timing Role: Provides ESD-hardened, low-latency translation of ISO/IEC 7816-3 compliant serial data streams with guaranteed 8Mbps support. Use Value: Meets EMVCo terminal certification requirements for signal integrity and electrostatic robustness without additional protection circuitry. | Use Scenario: Enabling communication between a 1.8V application processor and 5V display driver in a handheld point-of-sale device. IC Role / Device Role / Timing Role: Translates parallel GPIO control lines and serial command data from low-voltage host to high-voltage display subsystem. Use Value: Reduces system BOM cost by replacing discrete resistor networks and improves reliability with integrated thermal shutdown. |
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; 4-channel; 1.2V–3.6V VL/VCC range; no thermal protection; 100Mbps max. | Requires no direction-control pin but lacks three-state mode and ±15kV ESD rating; unsuitable for externally routed signal paths. | Select when bidirectional flexibility outweighs ESD robustness and thermal safety requirements. |
| SN74AVC4T245PW | Bus transceiver with configurable direction control; 1.2V–3.6V; 3.5mA drive strength; no integrated ESD beyond HBM 2kV. | Higher drive capability suits heavy capacitive loads but requires external ESD protection and lacks thermal shutdown. | Prefer for high-fanout applications where signal integrity dominates over system-level reliability. |
Compared with TXB0104RUTR and SN74AVC4T245PW, the MAX3379EEUD+T provides superior system-level robustness through integrated ±15kV HBM ESD protection, thermal short-circuit shutdown, and guaranteed 1µA three-state current - making it optimal for field-deployable, safety-critical, or high-reliability embedded interfaces.
Availability
The MAX3379EEUD+T is available at Aetrix Electronics and suitable for portable POS systems, smart card readers, and industrial IoT gateways requiring stable component supply, long-term lifecycle assurance, and traceable sourcing from authorized channels.
Supply support for MAX3379EEUD+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 demanding industrial, medical, and communications applications.
The MAX3372E–MAX3379E family was engineered specifically for multivoltage digital interfacing in battery-powered and space-constrained systems, emphasizing ultra-low power, high ESD tolerance, and seamless integration with low-voltage logic cores.
FAQ
What is the maximum data rate supported by the MAX3379EEUD+T under standard operating conditions?
The MAX3379EEUD+T guarantees 8Mbps operation across its full specified voltage range (+1.2V ≤ VL ≤ VCC ≤ +5.5V). At narrower voltage windows - such as +1.8V ≤ VL ≤ VCC ≤ +2.5V or +2.5V ≤ VL ≤ VCC ≤ +3.3V - it achieves up to 16Mbps. These higher rates require CLOAD ≤ 15pF and driver impedance ≤ 50Ω, per the Timing Characteristics table in the MAX3379EEUD+T datasheet.
Does the MAX3379EEUD+T support bidirectional level translation?
No, the MAX3379EEUD+T is a unidirectional level translator configured exclusively for VL → VCC translation. It cannot translate signals from VCC to VL. For bidirectional operation, consider the MAX3377E or MAX3378E variants within the same family, which use transmission-gate architecture to support VL ↔ VCC data flow on each channel.
How does the three-state mode function on the MAX3379EEUD+T, and what is its impact on power consumption?
The MAX3379EEUD+T enters three-state mode when the THREE-STATE pin is pulled low (logic low referenced to VL). This disables both I/O VL_ and I/O VCC_ drivers, placing them in high-impedance state and reducing total supply current to less than 1µA. The internal 10kΩ pullup resistors on I/O lines are disconnected, enabling safe multidrop bus configurations without signal contention.
What package type and thermal characteristics apply to the MAX3379EEUD+T?
The MAX3379EEUD+T uses a 14-pin TDFN-EP (3mm × 3mm) package with exposed thermal pad (EP), rated for continuous power dissipation of 1482mW at TA = +70°C (derating 18.5mW/°C above). The EP must be soldered to a solid ground plane to achieve optimal thermal performance and EMI suppression, as confirmed in the MAX3379EEUD+T Absolute Maximum Ratings table.
Is external ESD protection required when using the MAX3379EEUD+T in a handheld device?
No, external ESD protection is not required for the VCC-side I/Os of the MAX3379EEUD+T, as it integrates ±15kV Human Body Model (HBM) ESD protection - exceeding IEC 61000-4-2 Level 4 requirements. A 1µF capacitor between VCC and GND is recommended to maximize ESD robustness, per Note 3 in the MAX3379EEUD+T datasheet.
MAX3379EEUD+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:
- Unidirectional
- Number of Circuits:
- 1
- Channels per Circuit:
- 4
- 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:
- 14-TSSOP (0.173", 4.40mm Width)
MAX3379EEUD+T FAQ
1.How can I place an order for MAX3379EEUD+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX3379EEUD+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 MAX3379EEUD+T reliable?
The price and inventory of MAX3379EEUD+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX3379EEUD+T is usually 5 days.
3.What payment methods are accepted for MAX3379EEUD+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX3379EEUD+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX3379EEUD+T?
MAX3379EEUD+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX3379EEUD+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 MAX3379EEUD+T?
For technical support, including MAX3379EEUD+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX3379EEUD+T requirements.
6.How does Aetrix verify that MAX3379EEUD+T is sourced from the original manufacturer or authorized distributors?
All MAX3379EEUD+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 MAX3379EEUD+T meets industry standards.
7.What is the process for return or replacement of MAX3379EEUD+T?
All MAX3379EEUD+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX3379EEUD+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 MAX3379EEUD+T part is unused and in its original packaging.
Return procedure for MAX3379EEUD+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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