My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX3378EEUD+
- Part No.:
- MAX3378EEUD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
MAX3378EEUD+.pdf
- Description:
- IC TRANSLATOR BIDIR 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,844
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX3378EEUD+ from Maxim Integrated is a quad bidirectional logic-level translator IC 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 quiescent current as low as 130µA, and includes three-state output mode reducing supply current to <1µA - used in portable POS systems, smart card readers, and I²C/SPI interface bridging.
For engineers reviewing the MAX3378EEUD+ datasheet, MAX3378EEUD+ pinout, MAX3378EEUD+ application, or MAX3378EEUD+ equivalent, key selection considerations include bidirectional translation capability, 14-pin TDFN-EP package compatibility, slew-rate-limited EMI control, thermal short-circuit protection, and support for mixed-voltage I/O domains down to 1.2V on VL.
Technical Context
The MAX3378EEUD+ implements a transmission-gate-based architecture enabling true bidirectional level shifting (VL ↔ VCC) on all four independent channels without direction-control pins. Its internal speed-up circuitry - comprising one-shot-triggered pull-up MOSFETs (PU1/PU2) - accelerates rise times for both VL- and VCC-referenced I/Os, enabling up to 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), disconnecting internal 10kΩ pullups and placing all eight I/O terminals (I/O VL1–VL4 and I/O VCC1–VCC4) into high-impedance state. Thermal protection triggers automatic entry into three-state mode at junction temperature ≥+152°C and resumes normal operation at +142°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range VL | +1.2V to +5.5V - enables direct interfacing with 1.2V, 1.8V, 2.5V, 3.3V, and 5V logic domains. |
| Supply Range VCC | +1.65V to +5.5V - supports legacy 5V microcontrollers while maintaining compatibility with modern low-voltage systems. |
| Guaranteed Data Rate | 8Mbps over full voltage range - ensures reliable high-speed serial communication (e.g., SPI, I²C) without timing margin violations. |
| ESD Protection | ±15kV HBM on VCC-side I/Os - eliminates need for external TVS diodes in handheld or exposed-interface applications. |
| Quiescent Current | 130µA typical - minimizes battery drain in always-on portable devices such as GPS modules and cell-phone cradles. |
| Three-State Supply Current | <1µA - allows safe multidrop bus sharing and power-gating in system-level sleep modes. |
| Propagation Delay | 4ns to 30ns (typ.) - enables sub-10ns timing margins for 8Mbps signals with 15pF load, critical for jitter-sensitive interfaces. |
Pinout & Package
The MAX3378EEUD+ is housed in a 14-pin TDFN-EP (3mm × 3mm) package with exposed pad (EP) requiring connection to GND for thermal and EMI performance. Pin numbering follows standard top-view orientation with pin 1 marked by dot or bevel.
| 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 per datasheet. |
| VL (Pin 3) | Low-side supply input | Defines logic thresholds for VL-side I/Os; accepts +1.2V to (VCC + 0.3V); not limited to lowest voltage domain. |
| THREE-STATE (Pin 8) | Output enable control | Active-low signal referenced to VL; drives device into high-Z state when pulled below 0.15V or VL − 0.2V. |
| GND (Pin 7) | Ground reference | Common return path for both supply domains; EP must be soldered to PCB ground plane. |
| I/O VL1–VL4 (Pins 2, 4, 5, 6) | Bidirectional low-voltage I/Os | Each pair (e.g., I/O VL1 ↔ I/O VCC1) forms an independent bidirectional channel; no direction pin needed. |
| I/O VCC1–VCC4 (Pins 13, 12, 11, 10) | Bidirectional high-voltage I/Os | Correspond 1:1 with VL-side pins; tolerate up to VCC + 0.3V during hot-swap or power sequencing. |
| N.C. (Pins 1, 9) | No connection | Internally unconnected; must remain floating or tied to GND per layout guidelines - not usable as spare I/O. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional translation | Four independent VL ↔ VCC channels using transmission-gate topology - eliminates external direction-control logic and reduces BOM count. |
| Rise-time acceleration | Integrated one-shot circuitry cuts tR/tF to ≤25ns (8Mbps, 15pF), enabling clean signal edges without external buffers. |
| Slew-rate limiting | Controlled edge rates reduce broadband EMI emissions - meets Class B radiated emission limits in compact portable enclosures. |
| Thermal short-circuit protection | Automatic three-state activation at +152°C junction temperature - prevents latch-up and catastrophic failure during sustained overload. |
| 1.2V VL operation | Valid logic thresholds down to +1.2V on VL side - supports next-generation ultra-low-power ASICs and PLDs without level-shifter cascading. |
Applications
| Smart Card Readers | Portable POS Systems |
|---|---|
Use Scenario: Interfacing 1.8V smart card controller with 3.3V host MCU via ISO 7816-3 compliant serial protocol. IC Role / Device Role / Timing Role: Bidirectional level translator ensuring correct voltage mapping for RST, CLK, and I/O lines with sub-10ns propagation delay. Use Value: Eliminates discrete resistor-divider networks and guarantees ±15kV ESD robustness on externally routed card-edge connectors. | Use Scenario: Bridging 1.2V NFC transceiver and 5V payment terminal processor in handheld credit-card swipers. IC Role / Device Role / Timing Role: Quad-channel voltage translator supporting simultaneous I²C (SCL/SDA) and GPIO (IRQ, RESET) level shifting. Use Value: Enables single-chip solution for multi-rail interface consolidation, reducing PCB area by >40% vs. discrete solutions. |
| Cell-Phone Cradles | GPS Modules |
Use Scenario: Synchronizing 1.8V baseband processor UART with 3.3V USB-to-serial bridge in docking station. IC Role / Device Role / Timing Role: Full-duplex bidirectional UART level shifter with automatic direction sensing and 8Mbps capability. Use Value: Maintains error-free communication at 3Mbps baud rates even with 20pF trace capacitance and noisy automotive environments. | Use Scenario: Connecting 1.2V GNSS baseband SoC to 2.8V RF front-end and 3.3V host MCU in wearable navigation devices. IC Role / Device Role / Timing Role: Low-quiescent-current level translator for SPI-controlled GNSS configuration registers and NMEA data streaming. Use Value: Draws only 130µA during continuous tracking, extending coin-cell battery life beyond 12 months in always-on location logging. |
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 ESD protection - requires external ±15kV TVS diodes. | Higher-speed requirement (>8Mbps) with external ESD management; less suitable for space-constrained consumer designs. | Select TXS0104E only if system-level ESD design already includes TVS protection and data rate exceeds 10Mbps. |
| SN74AVC4T245 | 4-bit configurable direction control; 1.2V–3.6V operation; no built-in ESD beyond 2kV HBM; 3.3V VCC max. | Requires external direction-control logic and pull-up resistors; limited to ≤3.6V domains - unsuitable for 5V legacy interface bridging. | Choose SN74AVC4T245 only for cost-sensitive industrial applications where 5V compatibility and ±15kV ESD are not required. |
Compared with TXS0104E and SN74AVC4T245, the MAX3378EEUD+ delivers integrated ±15kV ESD robustness, true bidirectional operation without direction pins, and 5V-tolerant VCC support - making it optimal for compact, high-reliability portable electronics where board space and field reliability are critical.
Availability
The MAX3378EEUD+ is available at Aetrix Electronics and suitable for portable POS systems, smart card readers, and cell-phone cradles requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.
Supply support for MAX3378EEUD+ 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 high-reliability ICs for industrial, medical, communications, and consumer applications.
The MAX3372E–MAX3379E family was engineered specifically for multivoltage system interoperability - addressing the growing need for robust, low-power, ESD-hardened level translation in battery-powered and signal-exposed portable electronics.
FAQ
What voltage ranges does the MAX3378EEUD+ support on its VL and VCC supplies?
The MAX3378EEUD+ 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 the MAX3378EEUD+ to interface 1.2V ASICs with 3.3V or 5V microcontrollers while maintaining valid logic thresholds and avoiding damage during power sequencing.
Does the MAX3378EEUD+ require external direction-control signals?
No, the MAX3378EEUD+ does not require external direction-control signals. Its transmission-gate-based architecture enables true bidirectional level translation (VL ↔ VCC) on each of its four independent channels, eliminating the need for GPIO-controlled DIR pins and simplifying firmware and PCB layout for the MAX3378EEUD+.
How does the three-state output mode function in the MAX3378EEUD+?
The MAX3378EEUD+ enters three-state output mode when the THREE-STATE pin is pulled low (≤0.15V or VL − 0.2V). This disables internal 10kΩ pullups and places all eight I/O terminals (I/O VL1–VL4 and I/O VCC1–VCC4) into high-impedance state, reducing total supply current to <1µA - a key feature for power-gated subsystems using the MAX3378EEUD+.
What is the maximum data rate achievable with the MAX3378EEUD+?
The MAX3378EEUD+ guarantees 8Mbps operation across its full VL/VCC voltage range (+1.2V ≤ VL ≤ VCC ≤ +5.5V). Under optimized conditions - specifically +1.8V ≤ VL ≤ VCC ≤ +2.5V or +2.5V ≤ VL ≤ VCC ≤ +3.3V - the MAX3378EEUD+ supports up to 16Mbps, verified by timing characteristics in the official datasheet.
Is the MAX3378EEUD+ compatible with I²C and SPI bus protocols?
Yes, the MAX3378EEUD+ is explicitly validated for I²C and SPI level translation. Its bidirectional channels, low propagation delay (4–30ns), and slew-rate control ensure signal integrity for open-drain (I²C) and push-pull (SPI) configurations - confirmed in the Applications section of the MAX3378EEUD+ datasheet.
MAX3378EEUD+ 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:
- 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)
MAX3378EEUD+ FAQ
1.How can I place an order for MAX3378EEUD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX3378EEUD+ 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 MAX3378EEUD+ reliable?
The price and inventory of MAX3378EEUD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX3378EEUD+ is usually 5 days.
3.What payment methods are accepted for MAX3378EEUD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX3378EEUD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX3378EEUD+?
MAX3378EEUD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX3378EEUD+ 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 MAX3378EEUD+?
For technical support, including MAX3378EEUD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX3378EEUD+ requirements.
6.How does Aetrix verify that MAX3378EEUD+ is sourced from the original manufacturer or authorized distributors?
All MAX3378EEUD+ 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 MAX3378EEUD+ meets industry standards.
7.What is the process for return or replacement of MAX3378EEUD+?
All MAX3378EEUD+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX3378EEUD+, 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 MAX3378EEUD+ part is unused and in its original packaging.
Return procedure for MAX3378EEUD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX3378EEUD+ Tags
-
74LVC1T45GW,125
Nexperia USA Inc.
-
74LVCH2T45DC,125
Nexperia USA Inc.
-
SN74LVC1T45DBVR
Texas Instruments
-
SN74LVC1T45DRLR
Texas Instruments
-
SN74LVC1T45DPKR
Texas Instruments
-
SN74LVC2T45DCTR
Texas Instruments
-
74LVC2T45GT,115
Nexperia USA Inc.
-
SN74LVC1T45YZPR
Texas Instruments
-
LSF0102DCUR
Texas Instruments
-
SN74LVC1T45DCKR
Texas Instruments
-
TXS0102DCTR
Texas Instruments
-
FXLP34P5X
onsemi
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
