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Analog Devices Inc./Maxim Integrated MAX3378EETD+
- Part No.:
- MAX3378EETD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
MAX3378EETD+.pdf
- Description:
- IC TRANSLTR BIDIRECTIONAL 14TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:200
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Product details
Overview
The MAX3378EETD+ from Maxim Integrated is a quad bidirectional logic-level translator enabling voltage-domain interoperability 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, features ±15kV HBM ESD protection on VCC-side I/Os, operates with 130µA typical supply current, and includes three-state output control for multidrop bus applications - used in I²C/SPI interfaces between 1.8V microcontrollers and 3.3V peripherals.
For engineers reviewing the MAX3378EETD+ datasheet, MAX3378EETD+ pinout, MAX3378EETD+ application, or MAX3378EETD+ equivalent, key selection considerations include bidirectional translation capability, 8Mbps/10Mbps/16Mbps voltage-dependent data rates, thermal short-circuit protection, slew-rate limiting for EMI reduction, and compatibility with UCSP/TDFN/TSSOP quad-level-shifter footprints.
Technical Context
The MAX3378EETD+ implements a transmission-gate-based architecture enabling true bidirectional level shifting (VL ↔ VCC) on all four independent channels without direction-control pins. Its speed-up circuitry - comprising one-shot-triggered pull-up MOSFETs (PU1/PU2) - accelerates rise times for both VL- and VCC-referenced I/Os, enabling 16Mbps operation under specific voltage conditions (+1.8V ≤ VL ≤ VCC ≤ +2.5V or +2.5V ≤ VL ≤ VCC ≤ +3.3V).
Three-state output mode is activated by pulling the dedicated THREE-STATE pin low (logic referenced to VL), disabling internal 10kΩ pullups and placing all eight I/O terminals (I/O VL1–4 and I/O VCC1–4) into high-impedance state with <1µA total supply current. Thermal shutdown engages at +152°C junction temperature, forcing automatic entry into three-state mode until cooling to +142°C.
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 battery-powered controllers. |
| Supply Range VCC | +1.65V to +5.5V - supports legacy 3.3V/5V systems while maintaining compatibility with modern 1.8V/2.5V domains. |
| Guaranteed Data Rate | 8Mbps over full voltage range - ensures reliable SPI/MICROWIRE timing margins without external buffering. |
| ESD Protection | ±15kV HBM on I/O VCC lines - eliminates need for discrete TVS diodes in handheld/portable designs with exposed connectors. |
| Quiescent Current | 130µA typical - reduces system standby power in always-on communication modules like smart-card readers. |
| Three-State Supply Current | <1µA - allows dynamic bus arbitration in multi-master I²C systems without compromising power budget. |
| Propagation Delay | 4ns to 30ns (typ) - meets sub-100ns timing budgets for 8MHz SPI clocking with margin. |
Pinout & Package
MAX3378EETD+ is packaged in a 14-pin TDFN-EP (3mm × 3mm) with exposed pad. Pin assignments are electrically identical to the 14-pin TSSOP variant, supporting drop-in replacement where board space and thermal performance permit.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 14) | High-side supply input | Power domain reference for I/O VCC1–4; must be ≥1.65V and ≤5.5V; decoupling capacitor required for ESD robustness. |
| VL (Pin 3) | Low-side supply input | Power domain reference for I/O VL1–4; valid down to +1.2V; must not exceed VCC + 0.3V during operation. |
| THREE-STATE (Pin 8) | Output enable control | Active-low signal referenced to VL; drives all I/Os into high-Z state when pulled low; connect to VL for normal operation. |
| GND (Pin 7) | Common reference | Analog/digital ground return; EP must be soldered to PCB ground plane for thermal and ESD performance. |
| I/O VL1–4 (Pins 1,2,4,5) | Bidirectional low-voltage I/O | Four independent channels referenced to VL; support rail-to-rail signaling and open-drain driving modes. |
| I/O VCC1–4 (Pins 13,12,11,10) | Bidirectional high-voltage I/O | Four independent channels referenced to VCC; compatible with standard CMOS/LVTTL logic thresholds. |
| N.C. (Pins 6,9) | No connection | Unbonded die pads; must remain unconnected on PCB to avoid parasitic coupling or latch-up risk. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional translation | Eliminates direction-control signals and simplifies PCB routing for I²C SDA/SCL and UART TX/RX pairs. |
| Rise-time acceleration | One-shot triggered PU1/PU2 circuitry reduces tR to ≤15ns under +2.5V/+3.3V conditions, enabling 16Mbps operation. |
| Thermal short-circuit protection | Automatic three-state entry at +152°C prevents permanent damage during sustained bus contention or wiring faults. |
| Slew-rate limiting | Reduces EMI emissions in portable devices meeting FCC Class B radiated emission limits without added filtering. |
| ±15kV HBM ESD on VCC I/Os | Enables direct connection to USB, SIM, or SD card slots in cell-phone cradles without external protection components. |
Applications
| Smart Card Readers | Portable POS Systems |
|---|---|
Use Scenario: Interfacing ISO 7816-compliant smart cards (5V/3V/1.8V) with low-power ARM-based host processors (1.8V I/O). IC Role / Device Role / Timing Role: Bidirectional level translator for I/O, RST, CLK, and VCC lines; maintains protocol timing integrity across voltage domains. Use Value: Eliminates discrete MOSFET translators and reduces BOM count by 4× per card slot while preserving 10Mbps contactless transaction throughput. | Use Scenario: Connecting 3.3V barcode scanners and magnetic stripe readers to 1.8V application processors in handheld retail terminals. IC Role / Device Role / Timing Role: Quad-channel voltage translator for synchronous serial interfaces (SPI) and GPIO control lines. Use Value: Enables single-chip solution for all level-shifted signals, reducing layout area by >30% versus dual-SOT23 alternatives and supporting hot-plug detection. |
| Cell-Phone Cradles | GPS Modules |
Use Scenario: Docking station translating UART, I²C, and USB D+/D− control signals between 5V USB host and 1.8V mobile SoC. IC Role / Device Role / Timing Role: Bidirectional translator for debug/charging control lines; supports 8Mbps burst transfers during firmware updates. Use Value: Withstands ±15kV ESD events from repeated cable insertion, eliminating field failures in consumer docking accessories. | Use Scenario: Level-shifting NMEA 0183 serial output (3.3V GPS module) to 1.8V baseband processor in automotive infotainment head units. IC Role / Device Role / Timing Role: Asynchronous serial translator for GPS data stream; handles variable baud rates up to 115.2kbps with zero framing errors. Use Value: Guarantees signal integrity across wide temperature range (−40°C to +85°C) without timing skew between RX/TX paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional level translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TXB0104RUTR | Auto-direction sensing; no THREE-STATE pin; 1.2V–3.6V VL/VCC range; 100Mbps max (but only 20Mbps guaranteed at 3.3V). | Requires no external direction control but lacks thermal shutdown and has lower ESD rating (±8kV HBM). | Select for high-speed, auto-sensing applications where thermal protection is secondary and ESD exposure is controlled. |
| SN74AVC4T245PW | Direction-controlled (DIR pin); 1.2V–3.6V supply; 32mA drive strength; no integrated ESD beyond standard IO structures. | Higher drive capability suits noisy industrial buses but requires external ±15kV TVS diodes on all I/Os. | Select when driving long traces or capacitive loads >30pF, and when board space allows discrete ESD protection. |
Compared with TXB0104RUTR and SN74AVC4T245PW, the MAX3378EETD+ delivers guaranteed 8Mbps bidirectional translation with integrated ±15kV HBM ESD and thermal shutdown - making it optimal for space-constrained, safety-critical portable electronics where reliability trumps raw speed.
Availability
MAX3378EETD+ 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 extended temperature ranges and high-volume production cycles.
Supply support for MAX3378EETD+ 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 was engineered specifically for low-power, high-reliability multivoltage system interfacing - targeting portable, battery-operated, and ESD-prone applications where discrete level-shifting solutions increase cost and failure risk.
FAQ
What voltage ranges does the MAX3378EETD+ support for VL and VCC supplies?
The MAX3378EETD+ 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 during operation. This enables interoperability between sub-1.8V logic (e.g., advanced microcontrollers) and legacy 3.3V/5V peripherals. The MAX3378EETD+ guarantees 8Mbps data rate across the full overlapping range (+1.65V ≤ VCC ≤ +5.5V, +1.2V ≤ VL ≤ VCC).
Does the MAX3378EETD+ require external direction-control signals?
No, the MAX3378EETD+ does not require external direction-control signals. It uses a transmission-gate architecture that enables true bidirectional level translation (VL ↔ VCC) on each of its four independent channels. This eliminates the need for DIR pins or additional GPIO resources - a key advantage over direction-controlled alternatives like SN74AVC4T245PW. The MAX3378EETD+ enters three-state mode only when the dedicated THREE-STATE pin is actively pulled low.
How does the MAX3378EETD+ achieve 16Mbps operation despite its 8Mbps guarantee?
The MAX3378EETD+ achieves 16Mbps operation through integrated rise-time acceleration circuitry - one-shot-triggered pull-up MOSFETs (PU1/PU2) that temporarily boost drive strength during low-to-high transitions. This capability is voltage-dependent: 16Mbps is guaranteed only when +1.8V ≤ VL ≤ VCC ≤ +2.5V or +2.5V ≤ VL ≤ VCC ≤ +3.3V. At other voltages, the MAX3378EETD+ maintains its 8Mbps guaranteed rate. Timing data is validated in the device's Timing Characteristics table.
What protection features does the MAX3378EETD+ include beyond ESD?
Beyond ±15kV HBM ESD protection on VCC-side I/Os, the MAX3378EETD+ integrates thermal short-circuit protection that disables outputs at +152°C junction temperature and resumes operation at +142°C. It also features slew-rate limiting to reduce EMI emissions and a three-state output mode drawing <1µA supply current. These features collectively enhance system reliability in portable, hot-pluggable, and electrically noisy environments where the MAX3378EETD+ is commonly deployed.
Can the MAX3378EETD+ be used in I²C applications with pull-up resistors on both sides?
Yes, the MAX3378EETD+ is explicitly designed for I²C level translation. Its bidirectional architecture and rail-to-rail output swing allow standard I²C pull-up resistors to be placed on both VL and VCC sides - preserving bus timing and open-drain behavior. The device's low quiescent current (130µA typ) minimizes static power draw on the VL side, critical for battery-powered I²C slaves. Application circuits in the MAX3378EETD+ datasheet confirm proper termination for 100kHz/400kHz/1MHz I²C modes.
MAX3378EETD+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- Packaging:
- Tube
- Product Status:
- Active
- Translator Type:
- Voltage Level
- Channel Type:
- Bidirectional
- 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:
- -
- Data Rate:
- 16Mbps
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-WFDFN Exposed Pad
MAX3378EETD+ FAQ
1.How can I place an order for MAX3378EETD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX3378EETD+ 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 MAX3378EETD+ reliable?
The price and inventory of MAX3378EETD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX3378EETD+ is usually 5 days.
3.What payment methods are accepted for MAX3378EETD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX3378EETD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX3378EETD+?
MAX3378EETD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX3378EETD+ 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 MAX3378EETD+?
For technical support, including MAX3378EETD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX3378EETD+ requirements.
6.How does Aetrix verify that MAX3378EETD+ is sourced from the original manufacturer or authorized distributors?
All MAX3378EETD+ 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 MAX3378EETD+ meets industry standards.
7.What is the process for return or replacement of MAX3378EETD+?
All MAX3378EETD+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX3378EETD+, 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 MAX3378EETD+ part is unused and in its original packaging.
Return procedure for MAX3378EETD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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