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Analog Devices Inc./Maxim Integrated MAX3340EEUD
- Part No.:
- MAX3340EEUD
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
MAX3340EEUD.pdf
- Description:
- ESD PROTECTED LEVEL TRANSLATOR
- Quantity:
- Payment:
- Shipping:
Inventory:11,589
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Product details
Overview
The MAX3340EEUD from Maxim Integrated is a bidirectional USB level translator IC that converts logic-level signals (1.8V–3.6V) to full-speed/low-speed USB differential signals and vice versa. It integrates ±15kV HBM ESD protection on D+/D−, an internal 1.5kΩ USB pullup resistor, and a 3.3V linear regulator (VTRM) capable of sourcing up to 15mA. It supports reenumeration with power applied and operates across −40°C to +85°C in a 14-pin TSSOP package - ideal for space-constrained portable USB peripherals.
For engineers reviewing the MAX3340EEUD datasheet, MAX3340EEUD pinout, MAX3340EEUD application, or MAX3340EEUD equivalent, key selection considerations include its dual-mode (single-ended/differential) system-side interface, suspend-mode current <200µA, integrated VTRM regulation, and compliance with USB 1.1 and full-speed/low-speed operation under USB 2.0.
Technical Context
The MAX3340EEUD implements a dual-path signal translation architecture: one path handles USB-side differential signaling (D+/D−) with internal termination and ±15kV ESD hardening; the other manages system-side I/O via VP/VM/RCV with MODE-selectable single-ended or differential logic interpretation. Its OE/ENUMERATE pin serves both direction control and dynamic USB reenumeration by disconnecting the internal 1.5kΩ resistor when floating >200ns.
It features a self-contained 3.3V linear regulator (VTRM) powered from VCC, eliminating external LDO requirements, and supports independent voltage domains: VCC = 4V–5.5V (USB side) and VL = 1.8V–3.6V (logic side), enabling direct interfacing with low-voltage ASICs without level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Data Rate | Supports both full-speed (12Mbps) and low-speed (1.5Mbps) per USB 1.1 and USB 2.0 specifications. |
| VTRM Output | 3.3V regulated output (3.0V–3.6V) with 15mA sourcing capability - powers external logic or PHY circuitry directly. |
| ESD Protection | ±15kV Human Body Model on D+/D− pins - eliminates need for external TVS diodes in most portable designs. |
| Suspend Current | <200µA ICC when SUSP = high and OE/ENUMERATE floating - enables ultra-low-power USB peripheral standby. |
| Logic-Side Voltage Range | VL = 1.8V to 3.6V - ensures compatibility with modern low-voltage microcontrollers and FPGAs. |
| Internal Termination | 1.5kΩ pullup resistor switchable between D+ (full-speed) or D− (low-speed) via SPEED pin - no external resistor required. |
| Operating Temperature | −40°C to +85°C - qualified for industrial and extended-temperature embedded USB applications. |
Pinout & Package
MAX3340EEUD is housed in a 14-pin Thin Shrink Small Outline Package (TSSOP), 5.0mm × 6.4mm × 1.2mm body, with standard JEDEC MO-153 footprint and 0.65mm lead pitch. The package is RoHS-compliant and designed for reflow soldering.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RCV | Single-ended CMOS receiver output - provides logic-level representation of USB D+/D− differential state (0/1/SE0). |
| 2 | VP | System-side data I/O - functions as driver input or receiver output depending on OE/ENUMERATE state and MODE setting. |
| 3 | MODE | Selects system-side interface mode: high/floating = differential (VP/VM pair); low = single-ended (VP only, VM grounded). |
| 4 | VM | System-side data I/O - complements VP in differential mode; must be held low in single-ended mode. |
| 5 | OE/ENUMERATE | Dual-function control: low = transmit (system→USB), high = receive (USB→system); floating >200ns triggers reenumeration. |
| 6 | RENB | Receive enable input - high enables VP/VM as receiver outputs; low places them in high-impedance state (RCV unaffected). |
| 7 | SUSP | Suspend control - high activates low-power mode (<200µA), forcing RCV low and D+/D− to high-Z while maintaining VP/VM receive capability. |
| 8 | SPEED | Selects USB speed: high = full-speed (12Mbps, 1.5kΩ to D+), low = low-speed (1.5Mbps, 1.5kΩ to D−). |
| 9 | VCC | USB-side supply input (4V–5.5V) - powers internal circuitry and feeds VTRM regulator; requires 0.1µF + 10µF decoupling. |
| 10 | GND | Analog/digital ground reference - common return for VCC, VL, VTRM, and signal paths. |
| 11 | D− | USB differential data I/O - ESD-hardened (±15kV HBM); connects to host/device D− via 24.3Ω series resistor. |
| 12 | D+ | USB differential data I/O - ESD-hardened (±15kV HBM); connects to host/device D+ via 24.3Ω series resistor. |
| 13 | VTRM | 3.3V regulated output - powers internal USB circuitry and up to 15mA of external load; requires ≥1µF ceramic bypass to GND. |
| 14 | VL | System-side logic supply (1.8V–3.6V) - sets VP/VM/RCV logic thresholds; requires 1.0µF ceramic decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated ±15kV HBM ESD protection | Eliminates external TVS diodes on D+/D−, reducing BOM count and PCB area in portable USB interfaces. |
| Reenumeration with power applied | Enables dynamic USB protocol changes (e.g., configuration switching) without cable disconnect or power cycle. |
| On-chip 3.3V linear regulator (VTRM) | Provides regulated 3.3V at up to 15mA - powers USB PHY support circuitry or MCU peripherals without external LDO. |
| Mode-selectable system interface | MODE pin configures VP/VM for differential signaling (ASIC/FPGA) or single-ended (legacy microcontroller) logic compatibility. |
| No power-supply sequencing required | VCC and VL can be powered in any order - simplifies power management design in battery-powered systems. |
| Low-power suspend mode | Reduces VCC supply current to <200µA while retaining USB bus presence and ability to wake on traffic - extends battery life. |
Applications
| USB Data Cradle | Industrial Handheld Terminal |
|---|---|
|
Use Scenario: Docking station connecting legacy serial/parallel devices to USB host. IC Role / Device Role / Timing Role: Translates UART-level signals (1.8V/3.3V) to USB full-speed differential bus, managing enumeration and suspend/resume. Use Value: Enables plug-and-play connectivity without external level shifters or ESD protection components. |
Use Scenario: Ruggedized barcode scanner with USB interface operating in factory environments. IC Role / Device Role / Timing Role: Bridges microcontroller GPIO to USB D+/D− with robust ±15kV ESD tolerance and −40°C to +85°C operation. Use Value: Survives repeated electrostatic discharge events during field use while maintaining USB compliance. |
| Medical Patient Monitor Interface | Automotive Infotainment Adapter |
|
Use Scenario: USB-to-serial adapter for ECG/SpO₂ sensor data transmission to PC-based analysis software. IC Role / Device Role / Timing Role: Provides isolated, low-noise USB translation with VTRM powering auxiliary analog front-end circuitry. Use Value: Reduces component count and improves signal integrity by integrating regulation and ESD in one TSSOP package. |
Use Scenario: Aftermarket USB-AUX adapter linking smartphone to vehicle stereo via USB-C or mini-B port. IC Role / Device Role / Timing Role: Handles bidirectional USB communication while supporting low-speed HID commands and full-speed audio streaming. Use Value: Supports dual-speed operation and reenumeration to switch between HID control and audio class modes seamlessly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB level translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX3343EEUD | Separates OE (direction control) and ENUMERATE (re-enumeration) functions; removes RENB pin; lower suspend current (~90µA typical). | Better suited for firmware-controlled enumeration where OE and re-enumeration must be independently managed. | Select MAX3343EEUD if precise software-triggered USB reconfiguration is required and RENB functionality is unnecessary. |
| TPD3S014RTER | TI device with integrated USB 2.0 ESD protection (IEC 61000-4-2 ±8kV contact), no integrated regulator or reenumerate feature. | Limited to ESD protection + basic level translation; requires external 3.3V supply and separate enumeration control logic. | Choose TPD3S014RTER only when cost sensitivity outweighs integration benefits and external regulation is already available. |
Compared with MAX3343EEUD, the MAX3340EEUD offers unified OE/ENUMERATE control and RENB-enabled receive flexibility but higher suspend current; versus TPD3S014RTER, it delivers full USB translation + regulation + reenumeration in one IC, reducing total solution size and complexity.
Availability
MAX3340EEUD is available at Aetrix Electronics and suitable for USB data cradles, industrial handheld terminals, medical patient monitor interfaces, and automotive infotainment adapters requiring stable component supply, extended temperature operation, and integrated ESD protection.
Supply support for MAX3340EEUD 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 semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The MAX3340E/MAX3343E product line was designed specifically for robust, integrated USB physical-layer interfacing in space-constrained portable electronics - emphasizing ESD resilience, multi-voltage compatibility, and dynamic protocol adaptability.
FAQ
What is the primary function of the MAX3340EEUD?
The MAX3340EEUD is a bidirectional USB level translator IC that converts logic-level signals (1.8V–3.6V) to USB differential signals (D+/D−) and vice versa. It integrates ±15kV ESD protection, a 3.3V linear regulator (VTRM), internal 1.5kΩ USB pullup resistor, and reenumeration capability - all in a 14-pin TSSOP package. The MAX3340EEUD enables direct connection between low-voltage microcontrollers and USB hosts without external level shifters or protection components.
How does the MAX3340EEUD achieve USB reenumeration without power cycling?
The MAX3340EEUD achieves reenumeration by floating the OE/ENUMERATE pin for more than 200ns, which disconnects the internal 1.5kΩ pullup resistor from both D+ and D−. This signals the USB host to reinitialize the device while power remains applied. The MAX3340EEUD maintains full functionality during this process - including VTRM regulation and suspend-mode readiness - making it ideal for firmware-updatable USB peripherals. This behavior is intrinsic to the MAX3340EEUD's control architecture and requires no external circuitry.
Can the MAX3340EEUD power external circuitry, and what are the limits?
Yes, the MAX3340EEUD provides regulated 3.3V output via the VTRM pin, capable of sourcing up to 15mA. This output is derived from the VCC supply (4V–5.5V) and includes 55dB PSRR at 10kHz. To ensure stability, a ≥1µF low-ESR ceramic capacitor must be placed between VTRM and GND. The MAX3340EEUD's VTRM is commonly used to power USB PHY support logic, level translators, or small microcontroller peripherals - but note that VTRM ceases operation if VCC is removed or D+/D− is shorted to +5V.
What are the key differences between MAX3340EEUD and MAX3343EEUD?
The MAX3340EEUD combines OE and ENUMERATE into a single pin and includes RENB for independent receive-enable control, whereas the MAX3343EEUD separates OE (direction) and ENUMERATE (re-enumeration) functions and omits RENB. The MAX3340EEUD also exhibits slightly higher suspend current (≤200µA vs. ≤90µA typical for MAX3343EEUD). Both share identical USB performance, ESD rating, and package options, but the MAX3340EEUD offers greater flexibility in receive-path control at the cost of tighter timing constraints on OE/ENUMERATE transitions.
Does the MAX3340EEUD require external resistors for USB compliance?
Yes, the MAX3340EEUD requires two 24.3Ω ±1% series resistors - one each on the D+ and D− lines - to meet USB 1.1 impedance and rise/fall time specifications. These resistors are not integrated and must be placed between the MAX3340EEUD pins and the USB connector. The device does integrate the 1.5kΩ pullup resistor and ±15kV ESD protection, eliminating the need for external TVS diodes or pullup networks. All recommended external components (capacitors, resistors) are specified in the MAX3340EEUD's official datasheet and application circuits.
MAX3340EEUD 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:
- 1
- Voltage - VCCA:
- 4 V ~ 5.5 V
- Voltage - VCCB:
- 1.8 V ~ 3.6 V
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- Tri-State, Non-Inverted
- Data Rate:
- 12Mbps
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-WFBGA, CSPBGA
MAX3340EEUD FAQ
1.How can I place an order for MAX3340EEUD through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX3340EEUD 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 MAX3340EEUD reliable?
The price and inventory of MAX3340EEUD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX3340EEUD is usually 5 days.
3.What payment methods are accepted for MAX3340EEUD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX3340EEUD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX3340EEUD?
MAX3340EEUD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX3340EEUD 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 MAX3340EEUD?
For technical support, including MAX3340EEUD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX3340EEUD requirements.
6.How does Aetrix verify that MAX3340EEUD is sourced from the original manufacturer or authorized distributors?
All MAX3340EEUD 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 MAX3340EEUD meets industry standards.
7.What is the process for return or replacement of MAX3340EEUD?
All MAX3340EEUD units undergo pre-shipment inspection (PSI). If there is an issue with MAX3340EEUD, 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 MAX3340EEUD part is unused and in its original packaging.
Return procedure for MAX3340EEUD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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