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Analog Devices Inc./Maxim Integrated MAX3377EEUD
- Part No.:
- MAX3377EEUD
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
MAX3377EEUD.pdf
- Description:
- DUAL LOW-VOLT LEVEL TRANSLATOR
- Quantity:
- Payment:
- Shipping:
Inventory:8,593
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Product details
Overview
The MAX3377EEUD from Maxim Integrated is a quad bidirectional ±15kV ESD-protected logic-level translator IC designed for voltage translation between low-voltage (VL = +1.2V to +5.5V) and higher-voltage (VCC = +1.65V to +5.5V) domains in multivoltage systems. It supports guaranteed 230kbps data rate, features ultra-low 1µA three-state supply current, and operates in TDFN-14 (3mm × 3mm) package. It enables reliable SPI/I²C level shifting in portable POS terminals and smart card readers.
For engineers reviewing the MAX3377EEUD datasheet, MAX3377EEUD pinout, MAX3377EEUD application, or MAX3377EEUD equivalent, this page delivers verified electrical specs, bidirectional timing behavior, thermal short-circuit protection, ESD robustness, and real-world interface design guidance for low-power embedded interconnects.
Technical Context
The MAX3377EEUD uses a transmission-gate-based architecture enabling true bidirectional level translation (VL ↔ VCC) on all four I/O channels without direction control pins. Its logic thresholds are VL-referenced for inputs on the VL side (VIHL = VL − 0.2V, VILL = 0.15V) and VCC-referenced for inputs on the VCC side (VIHC = VCC − 0.4V, VILC = 0.15V), ensuring compatibility across mixed-supply interfaces.
It integrates slew-rate limiting for EMI reduction at 230kbps operation, thermal shutdown activation at TJ = +152°C, and automatic recovery at +142°C. The THREE-STATE input (VL-referenced) forces high-impedance on all eight I/O terminals while reducing total supply current to <1µA - critical for battery-powered multidrop bus architectures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | Guaranteed 230kbps; enables reliable low-speed serial communication (e.g., I²C clock stretching, MICROWIRE control lines). |
| ESD Protection | ±15kV HBM on I/O VCC pins; eliminates need for external TVS diodes in handheld device I/O routing. |
| Supply Range | VL: +1.2V to +5.5V; VCC: +1.65V to +5.5V; supports direct interfacing of 1.8V/2.5V/3.3V ASICs with 5V peripherals. |
| Three-State Current | <1µA total (VCC + VL); allows >1000 devices on shared bus without violating power budgets in sleep mode. |
| Propagation Delay | 1.6µs max (I/O VL ↔ VCC); ensures deterministic timing for synchronous protocols like SPI frame alignment. |
| Logic Thresholds | VIHL = VL − 0.2V, VIHC = VCC − 0.4V; guarantees noise margins ≥0.3V across full voltage range. |
| Package | TDFN-14 (3mm × 3mm, 0.5mm pitch); enables compact layout in space-constrained portable electronics. |
Pinout & Package
MAX3377EEUD is housed in a 14-pin TDFN-EP (3mm × 3mm) package with exposed pad connected to GND for thermal and EMI performance. Pin numbering follows standard top-view orientation with pin 1 marked by dot or chamfer.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 14) | High-side supply input | Accepts +1.65V to +5.5V; powers VCC-side logic and I/O drivers; requires local 1µF decoupling per Maxim recommendation. |
| VL (Pin 2) | Low-side supply input | Accepts +1.2V to +5.5V; sets VL-side logic thresholds and drives VL-side I/O; must be ≤ VCC + 0.3V. |
| THREE-STATE (Pin 6) | Enable input (VL-referenced) | Pull low to place all I/Os in high-Z state; reduces total supply current to <1µA; connects to VL for normal operation. |
| GND (Pin 7) | Ground reference | Common return for both supply domains; EP must be soldered to PCB ground plane for thermal stability. |
| I/O VL1–VL4 (Pins 3,4,11,12) | Bidirectional low-voltage I/O | Each connects to VL domain; supports rail-to-rail signaling; internal 10kΩ pullups disabled in three-state mode. |
| I/O VCC1–VCC4 (Pins 1,5,8,13) | Bidirectional high-voltage I/O | Each connects to VCC domain; withstands ±15kV HBM; output VOHC = 0.67×VCC, VOLC = 0.4V. |
| N.C. (Pins 9,10) | No connection | Not internally bonded; must remain unconnected on PCB to avoid parasitic coupling or leakage paths. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional translation | Four independent VL ↔ VCC channels with no direction-control pins - simplifies PCB routing and firmware logic. |
| ±15kV ESD protection | HBM-rated on all VCC-side I/Os; meets IEC 61000-4-2 Level 3 system requirements without external protection components. |
| Thermal short-circuit protection | Auto-enters three-state mode at TJ = +152°C and recovers at +142°C - prevents latch-up and permanent damage during bus contention. |
| Ultra-low quiescent current | 130µA typical total supply current (IQVCC + IQVL); enables always-on level-shifting in energy-harvesting sensor nodes. |
| Slew-rate limited outputs | Controlled edge rates reduce radiated EMI in handheld devices - critical for FCC/CE compliance in portable POS systems. |
Applications
| Smart Card Readers | Portable POS Terminals |
|---|---|
Use Scenario: Interfacing 3.3V microcontroller with ISO 7816-compliant 5V smart card via UART signals. IC Role / Device Role / Timing Role: Bidirectional level translator for CLK, I/O, RST lines; maintains signal integrity across voltage domains with <1.6µs propagation delay. Use Value: Eliminates discrete MOSFET translators and external pull-ups, reducing BOM count by 7 components per interface. | Use Scenario: Connecting 1.8V NFC controller to 5V display driver and 3.3V thermal printer interface. IC Role / Device Role / Timing Role: Quad-channel voltage translator enabling simultaneous SPI (display) and UART (printer) communication with independent VL/VCC domains. Use Value: Supports 230kbps guaranteed data rate with <1µA standby current - extends battery life beyond 12 months in sleep mode. |
| Cell Phone Cradles | Low-Cost Serial Interfaces |
Use Scenario: Level-shifting USB UART debug signals (3.3V host) to 1.2V SoC test points in production programming fixtures. IC Role / Device Role / Timing Role: Bidirectional translator for TX/RX/CTS/RTS lines; THREE-STATE pin enables hot-plug isolation during cradle insertion/removal. Use Value: ±15kV ESD protection prevents field failures from user-handling discharge events on exposed USB ports. | Use Scenario: Replacing legacy discrete level-shifter solutions in industrial RS-232/RS-485 adapter modules. IC Role / Device Role / Timing Role: Quad translator handling multiple control lines (EN, DIR, FAULT, READY) between 2.5V FPGA and 5V transceivers. Use Value: TDFN-14 footprint saves 42% board area vs. SOIC-14 alternatives while maintaining thermal performance via EP grounding. |
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; 100Mbps max; 1.2V–3.6V only; no ±15kV HBM rating. | Requires no THREE-STATE control but lacks ESD robustness for handheld I/O exposure. | Select when speed >230kbps is required and external ESD protection is acceptable. |
| SN74AVC4T245PW | Direction-controlled (DIR pin); 3.6V max VCC; 10µA three-state current; no integrated thermal protection. | Needs additional GPIO for direction control; unsuitable for thermally constrained sealed enclosures. | Select when precise direction control is needed and thermal fault resilience is not critical. |
Compared with TXB0104RUTR and SN74AVC4T245PW, the MAX3377EEUD uniquely combines guaranteed 230kbps operation, ±15kV HBM protection, thermal shutdown, and true bidirectional operation without direction pins - making it optimal for ruggedized portable interfaces where reliability trumps raw speed.
Availability
MAX3377EEUD is available at Aetrix Electronics and suitable for smart card readers, portable POS terminals, and cell phone cradles requiring stable component supply and long-term industrial availability.
Supply support for MAX3377EEUD 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, medical, and communications applications.
The MAX3372E–MAX3379E family targets low-voltage interoperability in battery-powered portable systems, emphasizing ESD resilience, ultra-low standby power, and compact packaging for space-constrained designs.
FAQ
What is the maximum capacitive load the MAX3377EEUD can drive at 230kbps?
The MAX3377EEUD is characterized for 230kbps operation with up to 50pF load capacitance per channel. At CLOAD = 50pF, rise/fall times remain within specification (tRVL ≤ 600ns, tFVL ≤ 1100ns). Driving >50pF may degrade timing margins and increase propagation delay beyond the guaranteed 1.6µs - verify with oscilloscope measurements in final layout.
Can the MAX3377EEUD translate between 1.2V and 5.5V logic levels?
Yes, the MAX3377EEUD supports VL from +1.2V to +5.5V and VCC from +1.65V to +5.5V, with the constraint that VL ≤ VCC + 0.3V. For example, it safely translates 1.2V I²C signals to 3.3V microcontroller buses or 1.8V FPGA I/O to 5V display controllers - confirmed by Electrical Characteristics tables across voltage combinations.
Does the MAX3377EEUD require external pull-up resistors on its I/O lines?
No, the MAX3377EEUD does not require external pull-ups. Internal 10kΩ pull-up resistors are present on all I/O VCC and I/O VL lines during normal operation. These are automatically disconnected when THREE-STATE is asserted, placing all I/Os in high-impedance mode - eliminating external components for bus arbitration or hot-swap isolation.
How does the thermal protection feature work in the MAX3377EEUD?
The MAX3377EEUD monitors junction temperature and forces entry into three-state mode at +152°C to halt current flow and prevent damage. Once the die cools to +142°C, it automatically resumes normal operation. This behavior is documented in the Thermal Short-Circuit Protection section and verified across -40°C to +85°C ambient conditions - critical for unventilated portable enclosures.
Is the MAX3377EEUD pin-compatible with other devices in the MAX3372E–MAX3379E family?
Yes, the MAX3377EEUD shares identical pinout and footprint with MAX3378EEUD and MAX3379EEUD in the 14-pin TDFN-EP package. However, MAX3377EEUD is rated for 230kbps (not 8Mbps), so substituting it for a MAX3378EEUD in high-speed applications will violate timing specifications - always cross-check data rate requirements before replacement.
MAX3377EEUD 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:
- Bidirectional
- 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:
- 230kbps
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP (0.173", 4.40mm Width)
MAX3377EEUD FAQ
1.How can I place an order for MAX3377EEUD through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX3377EEUD 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 MAX3377EEUD reliable?
The price and inventory of MAX3377EEUD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX3377EEUD is usually 5 days.
3.What payment methods are accepted for MAX3377EEUD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX3377EEUD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX3377EEUD?
MAX3377EEUD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX3377EEUD 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 MAX3377EEUD?
For technical support, including MAX3377EEUD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX3377EEUD requirements.
6.How does Aetrix verify that MAX3377EEUD is sourced from the original manufacturer or authorized distributors?
All MAX3377EEUD 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 MAX3377EEUD meets industry standards.
7.What is the process for return or replacement of MAX3377EEUD?
All MAX3377EEUD units undergo pre-shipment inspection (PSI). If there is an issue with MAX3377EEUD, 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 MAX3377EEUD part is unused and in its original packaging.
Return procedure for MAX3377EEUD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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