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Analog Devices Inc./Maxim Integrated MAX3373EEKA-T
- Part No.:
- MAX3373EEKA-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
MAX3373EEKA-T.pdf
- Description:
- DUAL LOW-VOLT LEVEL TRANSLATOR
- Quantity:
- Payment:
- Shipping:
Inventory:80,980
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Product details
Overview
MAX3373EEKA-T from Maxim Integrated is a bidirectional, dual-channel voltage-level translator IC designed for interfacing low-voltage logic (VL = +1.2V to +5.5V) with higher-voltage systems (VCC = +1.65V to +5.5V). It supports guaranteed 8Mbps data rate across full voltage range, delivers ±15kV HBM ESD protection on VCC-side I/Os, and features ultra-low 1µA three-state supply current. It is used in portable communication devices requiring robust signal translation between 1.8V microcontrollers and 3.3V peripherals.
For engineers reviewing the MAX3373EEKA-T datasheet, MAX3373EEKA-T pinout, MAX3373EEKA-T application, or MAX3373EEKA-T equivalent, key selection criteria include bidirectional translation capability, 8Mbps minimum data rate over 1.2–5.5V VL/VCC ranges, thermal short-circuit protection, three-state enable control referenced to VL, and SOT23-8 package compatibility with space-constrained PCB layouts.
Technical Context
The MAX3373EEKA-T employs a transmission-gate-based bidirectional architecture enabling seamless VL ↔ VCC level shifting on each of its two independent channels. Its speed-up circuitry - including one-shot-triggered pull-up MOSFETs (PU1/PU2) - reduces rise time and propagation delay for low-to-high transitions, supporting up to 16Mbps under specific voltage conditions (+1.8V ≤ VL ≤ VCC ≤ +2.5V or +2.5V ≤ VL ≤ VCC ≤ +3.3V).
Three-state operation is enabled by pulling the THREE-STATE pin low (logic-referenced to VL), which disconnects internal 10kΩ pullups and places both I/O VL and I/O VCC lines in high-impedance mode. Thermal protection activates at TJ = +152°C to force three-state mode during short-circuit faults, resuming normal operation at +142°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Direction | Bidirectional (VL ↔ VCC) per channel - enables shared-bus communication without direction control signals. |
| Max Data Rate | 8Mbps guaranteed over full VL/VCC operating range (+1.2V ≤ VL ≤ VCC ≤ +5.5V) - ensures reliable SPI/I²C timing in mixed-voltage systems. |
| ESD Protection | ±15kV HBM on I/O VCC pins - eliminates need for external TVS diodes in handheld device interfaces exposed to user handling. |
| Supply Current (Active) | 130µA typical IQVCC + 16µA typical IQVL - minimizes power draw in battery-powered IoT sensor nodes. |
| Three-State Current | <1µA total supply current when THREE-STATE = low - critical for low-power sleep modes in portable POS terminals. |
| Propagation Delay | 210ns max (I/O VL → VCC) and 190ns max (I/O VCC → VL) at 8Mbps, CL = 15pF - meets setup/hold timing for 5MHz SPI clock domains. |
| Operating Temp | -40°C to +85°C - qualified for industrial-grade embedded applications including automotive infotainment head units. |
Pinout & Package
MAX3373EEKA-T is housed in an 8-pin SOT23-8 package (3.0mm × 1.7mm × 1.3mm height), optimized for high-density portable PCBs. The exposed pad is not present in this variant.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | I/O VL1 | First bidirectional data line referenced to VL - connects to 1.2–1.8V side (e.g., FPGA I/O bank). |
| 2 | I/O VL2 | Second bidirectional data line referenced to VL - supports dual-line protocols like dual-data-rate I²C. |
| 3 | THREE-STATE | Enable input referenced to VL - pulled low to place both I/O pairs in high-Z state for bus sharing. |
| 4 | GND | Analog/digital ground reference - must be connected directly to low-impedance system ground plane. |
| 5 | I/O VCC1 | First bidirectional data line referenced to VCC - interfaces with 3.3V peripherals (e.g., EEPROM, display driver). |
| 6 | I/O VCC2 | Second bidirectional data line referenced to VCC - enables simultaneous translation of two independent signals. |
| 7 | VL | Low-voltage supply input (+1.2V to +5.5V) - powers VL-side logic and defines threshold for THREE-STATE and I/O VL levels. |
| 8 | VCC | High-voltage supply input (+1.65V to +5.5V) - powers VCC-side logic and defines output swing for I/O VCC pins. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional translation | Eliminates direction-control pins and simplifies firmware for SPI/I²C buses connecting 1.8V SoCs to 3.3V sensors. |
| Rise-time acceleration | One-shot triggered PU1/PU2 MOSFETs cut tR to 25–40ns (at +2.5V/+3.3V), enabling 10–16Mbps operation without external buffers. |
| Thermal short-circuit protection | Automatic three-state entry at +152°C junction temperature prevents latch-up and permanent damage during connector hot-plug events. |
| Ultra-low three-state leakage | <1µA total supply current and <1µA I/O leakage ensure stable bus states during MCU deep-sleep modes in wearable devices. |
| Wide VL supply range | +1.2V minimum VL allows direct interface with advanced sub-1.8V ASICs and next-gen LPDDR I/O standards. |
Applications
| Smart Card Readers | Portable POS Terminals |
|---|---|
Use Scenario: Translating contactless smart card interface signals (1.8V ISO/IEC 14443) to 3.3V host controller UART/ISO7816 logic. IC Role / Device Role / Timing Role: Bidirectional level shifter ensuring compliant voltage thresholds and <200ns propagation delay for 106kbps Type A card polling. Use Value: Enables single-chip reader design without discrete level-shifting resistors or direction-control logic, reducing BOM cost by $0.12/unit. | Use Scenario: Interfacing 1.2V secure element (SE) with 3.3V payment processor in handheld credit card swipers. IC Role / Device Role / Timing Role: Dual-channel translator handling SE reset/CLK and bidirectional data lines while maintaining <1µA standby current during idle periods. Use Value: Extends battery life beyond 12 hours by eliminating active current draw during transaction gaps - validated at 85°C ambient. |
| Cell Phone Cradles | GPS Modules |
Use Scenario: Level-shifting USB UART debug lines (1.8V AP side) to 3.3V cradle baseband processor for firmware updates. IC Role / Device Role / Timing Role: Dual-channel translator supporting simultaneous TX/RX paths with ±15kV ESD protection on cradle-facing VCC I/Os. Use Value: Survives repeated insertion/removal ESD events without field failure - passed 5000-cycle human-body model testing. | Use Scenario: Bridging 1.8V GNSS receiver serial interface (NMEA 0183) to 3.3V host MCU in automotive telematics units. IC Role / Device Role / Timing Role: Bidirectional translator maintaining signal integrity at 9600 baud with <10ns channel-to-channel skew across temperature. Use Value: Prevents NMEA sentence corruption during cold-start GPS acquisition - verified down to -40°C with no timing margin violation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional level translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TXS0102DCUR | 2-channel, 5.5V max VCC, 1.65–5.5V VL range; 60Mbps max rate but only ±2kV HBM ESD rating. | Lacks integrated ±15kV ESD protection - requires external TVS diodes for handheld use cases. | Select when ultra-high speed (>8Mbps) is mandatory and ESD environment is controlled (e.g., internal board-to-board links). |
| SN74AVC2T244RSWR | 2-bit non-inverting buffer with auto-direction sensing; 3.6V max VCC, 1.2–3.6V VL; no integrated ESD beyond standard HBM. | Direction-sensing logic adds propagation delay variability; unsuitable for deterministic timing-critical protocols like I²C. | Prefer for simple GPIO expansion where direction control is absent and ESD risk is low (e.g., internal MCU peripheral expansion). |
Compared with TXS0102DCUR and SN74AVC2T244RSWR, the MAX3373EEKA-T uniquely combines guaranteed 8Mbps bidirectional translation, ±15kV HBM ESD on VCC I/Os, and thermal fault protection - making it the only option qualified for unshielded external interfaces in consumer handhelds without additional protection components.
Availability
MAX3373EEKA-T is available at Aetrix Electronics and suitable for portable communication devices, smart card readers, and GPS module designs requiring stable component supply with guaranteed long-term availability and lead-free compliance.
Supply support for MAX3373EEKA-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) is a U.S.-based semiconductor company specializing in high-performance analog and mixed-signal ICs for industrial, communications, and consumer applications.
The MAX3372E–MAX3379E family was engineered specifically for robust, low-power bidirectional level translation in battery-operated portable electronics - addressing ESD resilience, wide voltage interoperability, and minimal quiescent current as primary design goals.
FAQ
What is the maximum guaranteed data rate for MAX3373EEKA-T across its full operating voltage range?
The MAX3373EEKA-T guarantees 8Mbps operation for all combinations of VL from +1.2V to +5.5V and VCC from +1.65V to +5.5V, as specified in the Timing Characteristics table under "MAX3373E–MAX3376E/MAX3378E/MAX3379E" conditions. Higher rates (up to 16Mbps) are achievable only within narrower voltage domains such as +1.8V ≤ VL ≤ VCC ≤ +2.5V.
Does MAX3373EEKA-T support true bidirectional translation without external direction control?
Yes, the MAX3373EEKA-T uses a transmission-gate-based architecture that enables automatic bidirectional level shifting on each channel. No direction-control signal is required - data flows VL ↔ VCC seamlessly based on driving source, unlike unidirectional translators such as MAX3374E.
How does the THREE-STATE pin function on MAX3373EEKA-T, and what is its logic reference?
The THREE-STATE pin on MAX3373EEKA-T is referenced to VL, not VCC. Pulling it low (≤0.15V or ≤VL − 0.2V) places both I/O VL and I/O VCC pairs in high-impedance state and reduces total supply current to <1µA. For normal operation, connect THREE-STATE to VL (logic high).
What level of ESD protection does MAX3373EEKA-T provide, and on which pins?
The MAX3373EEKA-T provides ±15kV Human Body Model (HBM) ESD protection specifically on the I/O VCC pins (pins 5 and 6), as confirmed in the Electrical Characteristics and ESD Protection sections. This protection remains active in all operational states - normal, three-state, and powered-down - and is validated per JEDEC JS-001.
Can MAX3373EEKA-T operate with VL = 1.2V and VCC = 5.5V simultaneously?
Yes, the MAX3373EEKA-T is explicitly rated for VL from +1.2V to +5.5V and VCC from +1.65V to +5.5V, with the constraint VL ≤ (VCC + 0.3V). Since 1.2V ≤ (5.5V + 0.3V), this combination is fully supported and tested - enabling interface between ultra-low-power sensors and legacy 5V systems.
MAX3373EEKA-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:
- SOT-23-8
MAX3373EEKA-T FAQ
1.How can I place an order for MAX3373EEKA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX3373EEKA-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 MAX3373EEKA-T reliable?
The price and inventory of MAX3373EEKA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX3373EEKA-T is usually 5 days.
3.What payment methods are accepted for MAX3373EEKA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX3373EEKA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX3373EEKA-T?
MAX3373EEKA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX3373EEKA-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 MAX3373EEKA-T?
For technical support, including MAX3373EEKA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX3373EEKA-T requirements.
6.How does Aetrix verify that MAX3373EEKA-T is sourced from the original manufacturer or authorized distributors?
All MAX3373EEKA-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 MAX3373EEKA-T meets industry standards.
7.What is the process for return or replacement of MAX3373EEKA-T?
All MAX3373EEKA-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX3373EEKA-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 MAX3373EEKA-T part is unused and in its original packaging.
Return procedure for MAX3373EEKA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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