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Analog Devices Inc./Maxim Integrated MAX3372EEKA+T
- Part No.:
- MAX3372EEKA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
MAX3372EEKA+T.pdf
- Description:
- IC TRANSLATOR BIDIR SOT23-8
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
The MAX3372EEKA+T from Maxim Integrated is a bidirectional, ±15kV ESD-protected logic-level translator enabling voltage translation between VL = +1.2V to +5.5V and VCC = +1.65V to +5.5V domains. It supports guaranteed 230kbps data rate, features slew-rate limiting for EMI reduction, operates with 130µA typical quiescent current, and includes three-state output mode reducing supply current to <1µA. It is used in low-voltage ASIC-to-system interfaces requiring robust signal integrity.
For engineers reviewing the MAX3372EEKA+T datasheet, MAX3372EEKA+T pinout, MAX3372EEKA+T application, or MAX3372EEKA+T equivalent, key selection criteria include bidirectional translation capability, 230kbps guaranteed timing across full voltage range, ±15kV HBM ESD protection on VCC-side I/Os, thermal short-circuit protection, and compatibility with UCSP, TDFN, and SOT23-8 packages.
Technical Context
The MAX3372EEKA+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 logic thresholds are referenced to respective supplies: VIHL = VL − 0.2V and VILC = 0.15V ensure reliable detection across operating voltages.
It integrates slew-rate limiting to suppress EMI emissions and includes a dedicated THREE-STATE input referenced to VL that forces all I/Os into high-impedance state with sub-1µA supply current. Thermal shutdown activates at TJ = +152°C and recovers at +142°C, providing fault resilience in overcurrent conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Direction | Bidirectional (VL ↔ VCC), no direction control required - simplifies PCB routing and firmware design. |
| Guaranteed Data Rate | 230kbps over full VL (+1.2V to +5.5V) and VCC (+1.65V to +5.5V) range - ensures timing margin in noise-sensitive industrial interfaces. |
| ESD Protection | ±15kV HBM on I/O VCC lines - eliminates need for external TVS diodes in handheld or exposed-port applications. |
| Supply Current (Active) | 130µA typical IQVCC at +3.3V/1.8V - enables battery-powered operation with minimal impact on system runtime. |
| Three-State Supply Current | <1µA when THREE-STATE = GND - supports low-power sleep modes and multidrop bus sharing. |
| Operating Temperature | −40°C to +85°C - qualified for automotive cabin, industrial control, and portable consumer environments. |
| Propagation Delay | 1.6µs max (I/OVL→VCC or I/OVCC→VL) - defines worst-case latency for real-time SPI or I²C bridging. |
Pinout & Package
MAX3372EEKA+T is packaged in an 8-pin SOT23-8 (3.0mm × 2.5mm) surface-mount package with exposed pad (EP) connected to GND for thermal performance. Pin functions are electrically identical across SOT23-8, TDFN, and UCSP variants per Maxim's pin-mapping documentation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VL) | Low-voltage supply input | Reference for VL-side I/O thresholds and internal biasing; must be ≥ +1.2V and ≤ (VCC + 0.3V). |
| 2 (I/O VL1) | Bidirectional VL-referenced I/O | Translates signals between VL and VCC domains; supports rail-to-rail driving and open-drain emulation. |
| 3 (I/O VL2) | Bidirectional VL-referenced I/O | Independent second channel; shares VL and THREE-STATE but has separate VCC-referenced counterparts. |
| 4 (THREE-STATE) | Three-state enable input | Logic-low (≤ 0.15V) disables all I/Os into high-Z; referenced to VL, not VCC - requires VL-level control signal. |
| 5 (GND) | Ground reference | Common return for both supply domains; EP must be soldered to GND plane for thermal reliability. |
| 6 (I/O VCC2) | Bidirectional VCC-referenced I/O | Paired with I/O VL2; outputs swing from 0V to VCC, inputs recognize VCC − 0.4V as logic high. |
| 7 (I/O VCC1) | Bidirectional VCC-referenced I/O | Paired with I/O VL1; provides full CMOS-compatible output drive on VCC side. |
| 8 (VCC) | High-voltage supply input | Reference for VCC-side I/O thresholds; range +1.65V to +5.5V - supports 1.8V, 2.5V, 3.3V, and 5V systems. |
Key Features
| Feature | Design Value |
|---|---|
| Transmission-gate bidirectional architecture | Enables automatic direction detection without external control lines - reduces GPIO count and firmware complexity in dual-supply microcontrollers. |
| Slew-rate limiting | Reduces EMI emissions by controlling edge rates - meets Class B radiated emission limits without added ferrites or shielding in compact layouts. |
| Thermal short-circuit protection | Auto-recovers from overtemperature faults at +152°C shutdown / +142°C resume - prevents latch-up and enables robust operation in unregulated power environments. |
| Sub-1µA three-state mode | Allows dynamic bus arbitration and power gating in multi-device SPI/I²C systems - eliminates contention and leakage during idle periods. |
| ±15kV HBM ESD on VCC I/Os | Meets IEC 61000-4-2 Level 4 contact discharge requirements without external protection - lowers BOM cost and board area in USB, card reader, or docking interfaces. |
Applications
| Smart Card Readers | SPI/MICROWIRE Level Translation |
|---|---|
Use Scenario: Translating command/response traffic between a 1.8V smart card controller and a 3.3V host processor in payment terminals or access control units. IC Role / Device Role / Timing Role: Bidirectional level shifter handling ISO/IEC 7816-3 clocked serial protocol with guaranteed 230kbps timing margin. Use Value: Eliminates need for discrete MOSFET translators or level-shifting buffers while maintaining ±15kV ESD robustness on exposed card slot lines. | Use Scenario: Bridging SPI bus between a low-voltage FPGA (1.2V I/O) and a 3.3V ADC or DAC in portable instrumentation. IC Role / Device Role / Timing Role: Dual-channel translator supporting independent MISO/MOSI paths with matched propagation delay (≤1.6µs) and channel-to-channel skew ≤500ns. Use Value: Preserves SPI timing integrity across voltage domains without introducing clock-domain crossing logic or additional timing constraints. |
| Cell-Phone Cradles | Low-Voltage ASIC Level Translation |
Use Scenario: Interfacing a 1.8V baseband processor with 5V USB PHY or charging circuitry in docking stations. IC Role / Device Role / Timing Role: Bidirectional translator managing UART, I²C, and GPIO signals with three-state support for hot-plug detection and enumeration sequencing. Use Value: Enables seamless plug-and-play operation with sub-1µA standby current during cradle idle states, extending host battery life. | Use Scenario: Connecting a 1.2V ASIC core to legacy 3.3V peripheral buses in telecom line cards or network processors. IC Role / Device Role / Timing Role: Voltage domain isolator supporting mixed-signal SoC integration where VL and VCC supplies ramp independently during power-up. Use Value: Guarantees safe operation even when VL exceeds VCC during sequencing (up to VCC + 0.3V), preventing latch-up or damage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional level translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TXB0102DGSR | Auto-direction sensing, 10Mbps guaranteed, 1.2V–3.6V VL/VCC range, no built-in ESD protection beyond standard HBM. | Requires external ±8kV ESD protection for exposed ports; better suited for internal board-level translation only. | Select when higher speed (10Mbps) is needed and system-level ESD is handled elsewhere. |
| SN74AVC4T245PWR | Direction-controlled (DIR pin required), 3.6V max VCC, 1.2V–3.6V VL, 12mA drive strength, no integrated thermal protection. | Lacks auto-bidirectional operation and thermal shutdown - demands careful firmware coordination and external thermal monitoring. | Select when precise direction control is preferred and higher drive capability is required for long traces or heavy loads. |
Compared with TXB0102DGSR and SN74AVC4T245PWR, the MAX3372EEKA+T uniquely combines true bidirectional operation without direction pins, ±15kV HBM ESD on VCC I/Os, and thermal fault protection - making it optimal for space-constrained, externally exposed, or thermally unmanaged interfaces where reliability trumps raw speed.
Availability
MAX3372EEKA+T is available at Aetrix Electronics and suitable for smart card readers, cell-phone cradles, and portable POS systems requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MAX3372EEKA+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 high-reliability ICs for industrial, automotive, communications, and computing markets.
The MAX3372E series belongs to Maxim's ESD-protected level translation product line, engineered specifically for robust, low-power, bidirectional voltage translation in multivoltage portable and embedded systems.
FAQ
What is the maximum data rate supported by the MAX3372EEKA+T?
The MAX3372EEKA+T guarantees 230kbps operation across its full specified voltage range (VL = +1.2V to +5.5V, VCC = +1.65V to +5.5V). While higher speeds up to 16Mbps are possible under specific voltage combinations (e.g., +1.8V ≤ VL ≤ VCC ≤ +2.5V), those are not guaranteed for the MAX3372EEKA+T variant - only the 230kbps rating is production-tested and warranted for this part number.
Does the MAX3372EEKA+T require external pull-up resistors on its I/O lines?
No, the MAX3372EEKA+T does not require external pull-up resistors. It integrates internal 10kΩ pull-up resistors on both I/O VL and I/O VCC lines during normal operation. These are automatically disconnected when the THREE-STATE pin is pulled low, placing the I/Os in high-impedance mode - eliminating external components for bus sharing or power-down states.
Can the MAX3372EEKA+T translate between 1.2V and 5V logic levels?
Yes, the MAX3372EEKA+T supports VL as low as +1.2V and VCC as high as +5.5V, enabling direct translation between 1.2V logic (e.g., advanced ASIC cores) and 5V peripherals. However, ensure VL ≤ (VCC + 0.3V); for VCC = 5V, VL must not exceed 5.3V - well within the 1.2V–5.5V VL range. This makes the MAX3372EEKA+T suitable for legacy 5V system interfacing with modern ultra-low-voltage controllers.
How does the three-state function work on the MAX3372EEKA+T?
The THREE-STATE pin on the MAX3372EEKA+T is referenced to VL, not VCC. Pulling it low (≤ 0.15V) places both I/O VL and I/O VCC lines into high-impedance state and reduces total supply current to <1µA. For normal operation, connect THREE-STATE to VL (logic-high). This architecture allows clean bus arbitration in multidrop configurations without requiring level-shifted control signals.
Is the MAX3372EEKA+T compatible with I²C open-drain signaling?
Yes, the MAX3372EEKA+T supports I²C-level translation via its bidirectional architecture and inherent open-drain emulation capability. When driven by an open-drain source on the VL side, the device correctly translates low pulses to the VCC side while allowing pull-ups on both sides - preserving I²C bus timing and arbitration behavior. Its 230kbps guarantee covers standard-mode (100kHz) and fast-mode (400kHz) I²C operation with margin.
MAX3372EEKA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Translator Type:
- Voltage Level
- Channel Type:
- Bidirectional
- Number of Circuits:
- 1
- Channels per Circuit:
- 2
- 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:
- SOT-23-8
MAX3372EEKA+T FAQ
1.How can I place an order for MAX3372EEKA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX3372EEKA+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 MAX3372EEKA+T reliable?
The price and inventory of MAX3372EEKA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX3372EEKA+T is usually 5 days.
3.What payment methods are accepted for MAX3372EEKA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX3372EEKA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX3372EEKA+T?
MAX3372EEKA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX3372EEKA+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 MAX3372EEKA+T?
For technical support, including MAX3372EEKA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX3372EEKA+T requirements.
6.How does Aetrix verify that MAX3372EEKA+T is sourced from the original manufacturer or authorized distributors?
All MAX3372EEKA+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 MAX3372EEKA+T meets industry standards.
7.What is the process for return or replacement of MAX3372EEKA+T?
All MAX3372EEKA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX3372EEKA+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 MAX3372EEKA+T part is unused and in its original packaging.
Return procedure for MAX3372EEKA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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