My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX3343EEUD
- Part No.:
- MAX3343EEUD
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
MAX3343EEUD.pdf
- Description:
- USB LEVEL TRANSLATOR
- Quantity:
- Payment:
- Shipping:
Inventory:16,453
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX3343EEUD 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 termination 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 14-pin TSSOP packaging - ideal for compact USB peripheral interfaces.
For engineers reviewing the MAX3343EEUD datasheet, MAX3343EEUD pinout, MAX3343EEUD application, or MAX3343EEUD equivalent, key selection criteria include its dual-mode (single-ended/differential) system-side interface, suspend-mode current <200µA, OE-controlled directionality, and compliance with USB 1.1/2.0 physical layer specifications for both 1.5Mbps and 12Mbps operation.
Technical Context
The MAX3343EEUD implements a dual-rail architecture: VCC (4V–5.5V) powers the USB side and feeds an internal 3.3V LDO (VTRM), while VL (1.8V–3.6V) supplies the logic side - eliminating supply sequencing requirements. Its MODE pin selects between single-ended (MODE = 0) and differential (MODE = 1) logic-side input interpretation, and SPEED pin configures internal 1.5kΩ pullup connection to D+ (full-speed) or D− (low-speed).
Direction control is managed exclusively by the OE pin: low enables transmit (VP/VM → D+/D−), high enables receive (D+/D− → VP/VM/RCV). Unlike the MAX3340E, the MAX3343EEUD separates enumeration control (ENUMERATE pin) from OE, allowing software-triggered USB reenumeration without disrupting data flow - critical for hot-protocol-switching applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Data Rate | Supports both full-speed (12Mbps) and low-speed (1.5Mbps) per USB 1.1/2.0 - enables single device deployment across legacy and modern USB hosts. |
| VTRM Output | 3.3V ±0.3V regulated output sourcing up to 15mA - powers external logic (e.g., microcontroller I/O banks or level shifters) directly from USB VCC. |
| ESD Protection | ±15kV HBM on D+/D− pins - eliminates need for external TVS diodes in portable consumer designs like MP3 players and PDAs. |
| Suspend Current | <200µA at VCC when SUSP = high and OE floating - meets USB suspend current budget for battery-powered peripherals. |
| Logic-Side Voltage Range | VL = 1.8V to 3.6V - ensures compatibility with modern low-voltage ASICs and 1.8V/2.5V/3.3V FPGA I/O banks. |
| Propagation Delay | 25ns (D+/D− to RCV), 12ns (D+/D− to VP/VM) - preserves timing margins in high-speed USB signaling paths. |
| Internal Termination | 1.5kΩ ±5% resistor switchable between D+ and D− via SPEED pin - removes external resistor placement and BOM count. |
Pinout & Package
MAX3343EEUD is housed in a 14-pin Thin Shrink Small Outline Package (TSSOP), 5.0mm × 6.4mm × 1.2mm, with standard JEDEC MO-153 footprint and exposed pad thermal enhancement.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RCV | Single-ended CMOS receiver output - provides logic-level representation of USB differential state (SE0, J, K) for simple host-side monitoring. |
| 2 | VP | System-side bidirectional data pin - functions as driver input or receiver output depending on OE state; paired with VM for differential mode. |
| 3 | MODE | Logic-side interface mode select - low enables single-ended VP-only operation; high (or floating) enables differential VP/VM operation. |
| 4 | VM | System-side bidirectional data pin - complements VP in differential mode; driven low with MODE=0 for SE0 generation. |
| 5 | OE | Output Enable / Direction Control - low enables VP/VM as driver inputs (transmit); high enables VP/VM/RCV as outputs (receive). |
| 6 | ENUMERATE | Software-controlled USB reenumeration - low disconnects internal 1.5kΩ pullup from D+/D−, triggering host re-detection without power cycle. |
| 7 | SUSP | Suspend mode enable - high forces low-power state: RCV = low, D+/D− = high-Z, VP/VM remain active, VTRM stays on. |
| 8 | SPEED | USB speed selection - high configures 1.5kΩ pullup on D+ (full-speed); low configures pullup on D− (low-speed). |
| 9 | VCC | USB-side supply input (4V–5.5V) - powers internal circuitry and VTRM regulator; requires 0.1µF + 10µF decoupling. |
| 10 | GND | Analog/digital ground reference - common return for VCC, VL, and signal paths; must be low-impedance plane. |
| 11 | D− | USB differential data I/O - ESD-protected (±15kV HBM); connects to host/device D− via 24.3Ω ±1% series resistor. |
| 12 | D+ | USB differential data I/O - ESD-protected (±15kV HBM); connects to host/device D+ via 24.3Ω ±1% series resistor. |
| 13 | VTRM | 3.3V regulated output - powers external circuitry; requires ≥1µF ceramic capacitor to GND; max load = 15mA. |
| 14 | VL | Logic-side supply input (1.8V–3.6V) - powers VP/VM/RCV/OE/ENUMERATE/SUSP/MODE/SPEED; requires 1µF decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 3.3V LDO (VTRM) | Eliminates external regulator for powering companion logic - reduces BOM count and PCB area in space-constrained USB peripherals. |
| Separate ENUMERATE pin | Enables firmware-triggered USB reenumeration without toggling OE - avoids data loss during protocol changes (e.g., CDC ↔ HID mode switch). |
| Configurable MODE/SPEED pins | Allows hardware-selectable interface topology (single-ended vs. differential) and USB speed - supports flexible design reuse across product variants. |
| ±15kV HBM ESD on D+/D− | Meets IEC 61000-4-2 Level 4 for contact discharge - enables direct USB connector routing without external protection components. |
| No power-supply sequencing required | VL and VCC can be powered in any order - simplifies power management design in multi-rail embedded systems. |
Applications
| Mobile Phone Cradle | Industrial USB Data Logger |
|---|---|
|
Use Scenario: Docking station connecting legacy serial-based sensors to a smartphone via USB OTG. IC Role / Device Role / Timing Role: Translates 1.8V UART signals from sensor MCU to USB D+/D−; provides VTRM to power level-shifting buffers. Use Value: Enables seamless integration without external regulators or ESD diodes - reduces bill-of-materials and improves robustness against handling ESD. |
Use Scenario: Battery-powered environmental monitor transmitting temperature/humidity over USB to PC. IC Role / Device Role / Timing Role: Bridges 3.3V microcontroller UART to USB; enters <200µA suspend mode when idle to extend battery life. Use Value: Eliminates need for discrete USB transceiver + LDO + ESD array - cuts solution size by >40% and lowers standby power. |
| Medical PDA Interface | USB Audio Adapter |
|
Use Scenario: Handheld diagnostic device syncing patient data to clinic PC via USB cable. IC Role / Device Role / Timing Role: Converts differential USB signals to single-ended 2.5V logic for ARM Cortex-M3 interface; supports hot-reenumeration after firmware update. Use Value: ENUMERATE pin allows in-field USB descriptor reload without disconnecting cable - maintains clinical workflow continuity. |
Use Scenario: Compact DAC dongle converting USB audio stream to analog output. IC Role / Device Role / Timing Role: Interfaces USB controller to 1.8V audio codec; uses MODE=0 for single-ended control lines and MODE=1 for differential I²S clock/data. Use Value: Dual-mode logic interface accommodates mixed-signal SoC I/O configurations - avoids custom PCB revisions for different codec families. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB level translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX3340EEUD | Shares identical pinout and package but combines OE/ENUMERATE into one pin; lacks dedicated ENUMERATE control; OE floating triggers reenumeration. | Less suitable for firmware-controlled reenumeration; requires careful OE timing to avoid unintended SE0 states during transitions. | Select MAX3343EEUD when deterministic software-initiated enumeration is required; choose MAX3340EEUD only if OE timing constraints permit floating-state reenum. |
| FTDI FT232RL | Full USB-to-serial UART bridge IC with integrated crystal, EEPROM, and USB PHY - not a level translator; requires external 3.3V supply. | Replaces entire USB interface stack (PHY + protocol + UART); adds host driver dependency and larger footprint. | Choose MAX3343EEUD for minimal-footprint, driverless USB peripheral interfaces where MCU handles USB protocol; use FT232RL only when UART bridging is primary requirement. |
Compared with MAX3340EEUD, MAX3343EEUD offers precise enumeration control and lower suspend current; versus FT232RL, it delivers smaller size, zero driver overhead, and direct MCU-level USB signaling - making it optimal for resource-constrained, embedded USB peripheral designs.
Availability
MAX3343EEUD is available at Aetrix Electronics and suitable for mobile phone cradles, industrial USB data loggers, medical PDAs, and USB audio adapters requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MAX3343EEUD 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 MAX3343EEUD belongs to Maxim's USB interface product line, designed specifically to simplify USB peripheral implementation in space- and power-constrained embedded systems while maintaining full USB 1.1/2.0 compliance.
FAQ
What is the primary function of the MAX3343EEUD in a USB interface design?
The MAX3343EEUD serves as a bidirectional level translator between a low-voltage logic system (1.8V–3.6V) and the USB differential bus (D+/D−). It converts single-ended or differential logic signals to USB-compliant differential signals and vice versa, while integrating essential functions including ±15kV ESD protection, internal 1.5kΩ termination, and a 3.3V LDO (VTRM). The MAX3343EEUD eliminates the need for external USB transceivers, regulators, and protection components - enabling compact, cost-effective USB peripheral implementations.
How does the ENUMERATE pin on the MAX3343EEUD differ from the OE/ENUMERATE pin on the MAX3340E?
The MAX3343EEUD features a dedicated ENUMERATE pin that solely controls USB reenumeration: driving it low disconnects the internal 1.5kΩ pullup resistor from D+/D−, triggering host re-detection without affecting data flow. In contrast, the MAX3340E combines OE (direction control) and enumeration into one OE/ENUMERATE pin - where floating OE for >200ns initiates reenumeration, risking unintended behavior during transient states. This separation makes the MAX3343EEUD more reliable for firmware-driven protocol switching in production systems.
Can the MAX3343EEUD operate without an external 24.3Ω series resistor on D+ and D−?
No - the MAX3343EEUD requires external 24.3Ω ±1% resistors in series with D+ and D− to comply with USB specification 1.1 impedance and rise/fall time requirements. These resistors limit slew rate and ensure signal integrity on the USB bus. While the MAX3343EEUD integrates the 1.5kΩ pullup resistor and ±15kV ESD protection, the 24.3Ω series resistors are mandatory per USB-IF compliance testing and must be placed as close as possible to the MAX3343EEUD package pins.
What is the maximum load current supported by the VTRM pin on the MAX3343EEUD?
The VTRM pin on the MAX3343EEUD delivers a regulated 3.3V output capable of sourcing up to 15mA continuously. This output is derived from the VCC supply (4V–5.5V) and is intended to power external logic such as microcontroller I/O banks, level shifters, or small sensors. To maintain regulation and stability, a minimum 1.0µF ceramic capacitor must be placed between VTRM and GND. Exceeding 15mA may cause VTRM dropout or thermal shutdown, so load current must be verified in final design conditions.
Does the MAX3343EEUD support both full-speed and low-speed USB operation simultaneously?
No - the MAX3343EEUD supports either full-speed (12Mbps) or low-speed (1.5Mbps) operation, selected at runtime via the SPEED pin. When SPEED = high, the internal 1.5kΩ pullup is connected to D+ for full-speed; when SPEED = low, it connects to D− for low-speed. The device cannot auto-negotiate or dynamically switch speeds during active communication - speed selection must be fixed before USB enumeration and maintained throughout the session.
MAX3343EEUD 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
MAX3343EEUD FAQ
1.How can I place an order for MAX3343EEUD through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX3343EEUD 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 MAX3343EEUD reliable?
The price and inventory of MAX3343EEUD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX3343EEUD is usually 5 days.
3.What payment methods are accepted for MAX3343EEUD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX3343EEUD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX3343EEUD?
MAX3343EEUD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX3343EEUD 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 MAX3343EEUD?
For technical support, including MAX3343EEUD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX3343EEUD requirements.
6.How does Aetrix verify that MAX3343EEUD is sourced from the original manufacturer or authorized distributors?
All MAX3343EEUD 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 MAX3343EEUD meets industry standards.
7.What is the process for return or replacement of MAX3343EEUD?
All MAX3343EEUD units undergo pre-shipment inspection (PSI). If there is an issue with MAX3343EEUD, 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 MAX3343EEUD part is unused and in its original packaging.
Return procedure for MAX3343EEUD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX3343EEUD Tags
-
74LVC1T45GW,125
Nexperia USA Inc.
-
74LVCH2T45DC,125
Nexperia USA Inc.
-
SN74LVC1T45DBVR
Texas Instruments
-
SN74LVC1T45DRLR
Texas Instruments
-
SN74LVC1T45DPKR
Texas Instruments
-
SN74LVC2T45DCTR
Texas Instruments
-
74LVC2T45GT,115
Nexperia USA Inc.
-
SN74LVC1T45YZPR
Texas Instruments
-
LSF0102DCUR
Texas Instruments
-
SN74LVC1T45DCKR
Texas Instruments
-
TXS0102DCTR
Texas Instruments
-
FXLP34P5X
onsemi
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
