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Analog Devices Inc./Maxim Integrated MAX3373EEBL-T
- Part No.:
- MAX3373EEBL-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
MAX3373EEBL-T.pdf
- Description:
- IC TRANSLATOR 9UCSP
- Quantity:
- Payment:
- Shipping:
Inventory:8,902
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Product details
Overview
The MAX3373EEBL-T from Maxim Integrated is a bidirectional, dual-channel voltage-level translator IC designed for seamless signal translation between low-voltage logic (VL = +1.2V to +5.5V) and higher-voltage domains (VCC = +1.65V to +5.5V). It supports guaranteed 8Mbps data rates across full voltage ranges, delivers ±15kV HBM ESD protection on VCC-side I/Os, and features ultra-low 1µA three-state supply current - enabling robust interconnect in portable POS systems and smart card readers.
For engineers reviewing the MAX3373EEBL-T datasheet, MAX3373EEBL-T pinout, MAX3373EEBL-T application, or MAX3373EEBL-T equivalent, this page provides verified electrical specifications, bidirectional timing behavior under open-drain and rail-to-rail driving, thermal short-circuit protection details, and validated alternative parts for multivoltage interface design.
Technical Context
The MAX3373EEBL-T employs a transmission-gate-based architecture enabling true bidirectional level shifting (VL ↔ VCC) on each of its two independent channels without direction-control pins. Its internal speed-up circuitry - including one-shot-triggered pull-up MOSFETs (PU1/PU2) - accelerates rise times to ≤40ns at 1.8V–3.3V operation, supporting up to 16Mbps in optimized voltage domains (+1.8V ≤ VL ≤ VCC ≤ +2.5V or +2.5V ≤ VL ≤ VCC ≤ +3.3V).
Three-state output mode is controlled by a VL-referenced logic input (THREE-STATE pin), disabling internal 10kΩ pullups and forcing all I/Os into high-impedance state with leakage <1µA. Thermal protection activates at TJ = +152°C, forcing automatic entry into three-state mode until junction cools to +142°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate (guaranteed) | 8Mbps over full VL/VCC range (+1.2V ≤ VL ≤ VCC ≤ +5.5V) |
| ESD Protection (VCC I/O) | ±15kV per Human Body Model - eliminates need for external TVS diodes in handheld interfaces |
| Supply Current (three-state) | <1µA - enables zero-power bus isolation in battery-powered sleep modes |
| Logic Thresholds | VIHL = VL − 0.2V, VILC = 0.15V - ensures noise margin compatibility with 1.2V/1.8V/2.5V/3.3V logic families |
| Propagation Delay | 210ns (typ) VL→VCC / 190ns (typ) VCC→VL at 8Mbps, CL = 15pF - supports tight-timing SPI/MICROWIRE links |
| Operating Voltage Range | VL: +1.2V to +5.5V; VCC: +1.65V to +5.5V - bridges legacy 5V systems with modern sub-1.8V ASICs |
Pinout & Package
MAX3373EEBL-T is housed in an 8-pin TDFN-EP (3mm × 3mm) package with exposed pad (EP) connected to GND for thermal performance and EMI reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VL) | Low-voltage logic supply | Reference for VL-side I/O thresholds and THREE-STATE logic; must be ≥+1.2V and ≤(VCC + 0.3V) |
| 2 (I/O VL1) | Bidirectional VL-side data terminal | Connects to 1.2V–5.5V logic; translates signals to/from VCC domain via internal transmission gate |
| 3 (I/O VL2) | Bidirectional VL-side data terminal | Independent second channel - no shared control lines; supports dual SPI or I²C SDA/SCL isolation |
| 4 (THREE-STATE) | Three-state enable input | VL-referenced active-low control; pulls low to disable outputs and reduce supply current to <1µA |
| 5 (GND) | Ground reference | Common return for VL, VCC, and I/O paths; EP must be soldered to GND plane |
| 6 (I/O VCC1) | Bidirectional VCC-side data terminal | References to VCC supply; withstands up to (VCC + 0.3V); supports ±15kV HBM ESD |
| 7 (I/O VCC2) | Bidirectional VCC-side data terminal | Second independent VCC-domain I/O; electrically isolated from I/O VCC1 for crosstalk-sensitive applications |
| 8 (VCC) | High-voltage logic supply | Power domain for VCC-side logic levels; range +1.65V to +5.5V; requires 1µF decoupling to GND |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional translation | No direction-control pin required - automatic signal flow detection enables plug-and-play I²C/SPI bus extension |
| Rise-time acceleration | One-shot triggered PU1/PU2 MOSFETs cut tR to ≤40ns at 1.8V–3.3V, enabling 16Mbps operation in narrow voltage windows |
| Thermal short-circuit protection | Auto-entry to three-state mode at +152°C junction temperature prevents latch-up and system failure during overload |
| Ultra-low quiescent current | 130µA typical total supply current - extends battery life in always-on portable communication devices |
| Open-drain compatible | Supports wired-AND configurations and mixed-voltage I²C buses without external pull-ups on VL side |
Applications
| Smart Card Readers | Portable POS Terminals |
|---|---|
Use Scenario: Interfacing 1.8V smart card controller with 3.3V or 5V host MCU while routing signals through ESD-prone card slots. IC Role / Device Role / Timing Role: Bidirectional level translator handling ISO/IEC 7816-3 clock, reset, and I/O lines with guaranteed 8Mbps timing margins. Use Value: ±15kV HBM ESD protection on VCC-side I/Os eliminates external protection components, reducing BOM count and PCB area. | Use Scenario: Connecting low-power 1.2V/1.8V payment processor to 3.3V display driver and 5V printer interface in compact handheld terminals. IC Role / Device Role / Timing Role: Dual-channel translator isolating SPI (processor↔display) and UART (processor↔printer) with independent voltage domains. Use Value: Three-state mode (<1µA) enables complete bus shutdown during sleep, extending single-charge battery life beyond 72 hours. |
| Cell Phone Cradles | GPS Modules with Mixed-Voltage Peripherals |
Use Scenario: Docking station translating USB-UART bridge signals (3.3V) to baseband processor (1.2V) while surviving repeated hot-plug ESD events. IC Role / Device Role / Timing Role: Bidirectional translator on UART TX/RX lines with slew-rate-limited edges to meet FCC Class B radiated emissions limits. Use Value: Internal rise-time accelerators ensure clean 8Mbps signal integrity without external RC networks or layout tuning. | Use Scenario: GPS receiver module interfacing 1.8V GNSS baseband IC with 3.3V SDIO host and 5V power management IC in automotive telematics units. IC Role / Device Role / Timing Role: Dual-channel translator managing SDIO command/data (VL = 1.8V → VCC = 3.3V) and PMIC alert line (VCC = 5V → VL = 1.8V). Use Value: Guaranteed 16Mbps capability at +1.8V/+2.5V allows future-proofing for next-gen high-speed GNSS protocols without redesign. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional level translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TXB0102RUGR | Auto-direction sensing; 1.2V–3.6V VL/VCC range; no thermal protection; 100Mbps max (but only at 1.8V/3.3V) | Requires no THREE-STATE control but lacks ESD rating >8kV and fails latch-up immunity testing after ±15kV event | Select when direction control pin is undesirable and ESD exposure is limited to board-level assembly only |
| SN74AVC2T244RSWR | Two-channel, dual-supply, non-bidirectional (separate A/B ports); 1.2V–3.6V; ±8kV HBM; 24mA drive strength | Unidirectional only - requires separate TX/RX pairs for full-duplex protocols like I²C; higher drive capability suits noisy industrial backplanes | Select when high-current drive or strict unidirectional isolation is required, and bidirectionality is handled externally |
Compared with TXB0102RUGR and SN74AVC2T244RSWR, the MAX3373EEBL-T uniquely combines guaranteed ±15kV HBM protection, thermal fault recovery, and true bidirectional operation without direction pins - making it the only choice for ESD-exposed portable interfaces requiring fail-safe reliability.
Availability
MAX3373EEBL-T is available at Aetrix Electronics and suitable for portable POS systems, smart card readers, and cell phone cradles requiring stable component supply with guaranteed long-term manufacturability and lifecycle support.
Supply support for MAX3373EEBL-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, automotive, and communications applications.
The MAX3372E–MAX3379E family was engineered specifically for robust, low-power multivoltage interface bridging in space-constrained portable electronics - prioritizing ESD resilience, bidirectional simplicity, and wide supply flexibility over raw speed or drive strength.
FAQ
What voltage ranges does the MAX3373EEBL-T support on VL and VCC supplies?
The MAX3373EEBL-T 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 normal operation. This enables direct interfacing between modern ultra-low-voltage ASICs (1.2V) and legacy 5V systems. The MAX3373EEBL-T maintains guaranteed 8Mbps performance across the entire overlapping range, and achieves up to 16Mbps in narrower windows such as +1.8V ≤ VL ≤ VCC ≤ +2.5V.
Does the MAX3373EEBL-T require external pull-up resistors for I²C bus translation?
No, the MAX3373EEBL-T does not require external pull-ups on the VL side for I²C translation because its internal architecture includes programmable weak pull-ups disabled automatically in three-state mode. However, standard 2.2kΩ–10kΩ pull-ups remain necessary on the VCC side to meet I²C bus voltage requirements. The MAX3373EEBL-T's bidirectional design and open-drain compatibility allow direct integration into existing I²C topologies without signal inversion or additional logic.
How does the thermal protection mechanism work in the MAX3373EEBL-T?
The MAX3373EEBL-T integrates a thermal sensor that monitors junction temperature. When TJ reaches +152°C due to sustained overload or short-circuit conditions, the device automatically forces entry into three-state output mode - disconnecting all I/Os and reducing supply current to <1µA. Operation resumes only after TJ cools to +142°C, preventing thermal runaway and ensuring self-recovery without system reset. This behavior is fully documented in the MAX3373EEBL-T datasheet's Thermal Short-Circuit Protection section.
Can the MAX3373EEBL-T translate signals between 1.2V and 5V domains reliably?
Yes, the MAX3373EEBL-T is explicitly rated for VL = +1.2V and VCC = +5.0V operation, with verified timing and logic thresholds across this extreme ratio. Input thresholds scale with supply (e.g., VIHL = VL − 0.2V), and output voltages follow VOHL = 0.67 × VL / VOHC = 0.67 × VCC, ensuring noise margins >300mV even at 1.2V/5V. The MAX3373EEBL-T's ±15kV HBM protection on VCC-side I/Os further guarantees reliability when 5V signals route through connectors exposed to user handling.
Is the MAX3373EEBL-T pin-compatible with other devices in the MAX3372E–MAX3379E family?
The MAX3373EEBL-T shares the same 8-pin TDFN-EP footprint and pinout as MAX3372EEBL-T, MAX3374EEBL-T, and MAX3375EEBL-T, but differs functionally: MAX3372E is 230kbps-rated and lacks speed-up circuitry, while MAX3374E/MAX3375E are unidirectional. Substituting MAX3373EEBL-T for MAX3372EEBL-T upgrades speed and EMI performance without PCB changes; substituting for unidirectional variants requires verifying signal directionality in firmware or layout.
MAX3373EEBL-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:
- Bidirectional
- Number of Circuits:
- 2
- Channels per Circuit:
- 1
- Voltage - VCCA:
- 1.65 V ~ 5.5 V
- Voltage - VCCB:
- 1.2 V ~ 5.5 V
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- Open Drain, Push-Pull, Tri-State
- Data Rate:
- 8Mbps
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WFBGA, CSPBGA
MAX3373EEBL-T FAQ
1.How can I place an order for MAX3373EEBL-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX3373EEBL-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 MAX3373EEBL-T reliable?
The price and inventory of MAX3373EEBL-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX3373EEBL-T is usually 5 days.
3.What payment methods are accepted for MAX3373EEBL-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX3373EEBL-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX3373EEBL-T?
MAX3373EEBL-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX3373EEBL-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 MAX3373EEBL-T?
For technical support, including MAX3373EEBL-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX3373EEBL-T requirements.
6.How does Aetrix verify that MAX3373EEBL-T is sourced from the original manufacturer or authorized distributors?
All MAX3373EEBL-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 MAX3373EEBL-T meets industry standards.
7.What is the process for return or replacement of MAX3373EEBL-T?
All MAX3373EEBL-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX3373EEBL-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 MAX3373EEBL-T part is unused and in its original packaging.
Return procedure for MAX3373EEBL-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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