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Analog Devices Inc./Maxim Integrated MAX7381AXR136+
- Part No.:
- MAX7381AXR136+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Oscillators
- Package:
- -
- Datasheet:
-
MAX7381AXR136+.pdf
- Description:
- MAX7381 3-PIN SILICON OSCILLATOR
- Quantity:
- Payment:
- Shipping:
Inventory:896
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Product details
Overview
MAX7381AXR136+ from Maxim Integrated is a factory-trimmed 13MHz silicon oscillator in SC70-3 package, delivering rail-to-rail 50% duty-cycle square-wave output for microcontroller and UART clocking in 2.7V–5.5V systems. It features ±2% initial frequency accuracy, 5µs startup time, ±10mA drive capability, and operates across –40°C to +125°C.
For engineers reviewing the MAX7381AXR136+ datasheet, MAX7381AXR136+ pinout, MAX7381AXR136+ application, or MAX7381AXR136+ equivalent, key selection criteria include vibration/EMI immunity, no external components required, low jitter (180psP-P at 16MHz), and compatibility with ceramic resonator/crystal replacement in automotive and appliance designs.
Technical Context
The MAX7381AXR136+ is a direct-replacement silicon oscillator that generates 13MHz without PLL or external load capacitors. Its push-pull CMOS output drives 1kΩ to GND or 500Ω to V+, with stable timing over supply voltage (2.7V–5.5V) and temperature (–40°C to +125°C).
It eliminates high-impedance nodes found in crystal-based oscillators, making it inherently resistant to EMI, mechanical vibration, and humidity. Startup occurs within 5µs after V+ exceeds 1.65V, and output rise/fall times are each ≤5ns with CL = 10pF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency | 13MHz nominal - factory-trimmed, no adjustment needed; replaces discrete crystal + load caps. |
| Initial Accuracy | ±2% at +25°C - enables reliable boot timing without calibration in MCU systems. |
| Supply Voltage Range | 2.7V to 5.5V - supports 3V, 3.3V, and 5V logic domains without level-shifting. |
| Output Drive | ±10mA - directly drives MCU clock inputs and small capacitive loads (≤100pF) without buffer. |
| Startup Time | 5µs - ensures rapid system initialization; reset circuitry must delay enable by ≥20µs after V+ > 2.7V. |
| Jitter (16MHz ref) | 180psP-P over 20s - low phase noise suitable for UART baud rate generation and synchronous peripherals. |
| Temp Drift | ±100ppm/°C - predictable frequency shift across industrial temp range; no thermal compensation required. |
Pinout & Package
MAX7381AXR136+ is housed in a 3-pin SC70-3 surface-mount package (2.0mm × 2.1mm × 0.9mm), with exposed pad not connected. Requires 0.1µF ceramic bypass capacitor between V+ and GND, placed adjacent to the device.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - V+ | Positive supply input | Accepts 2.7V–5.5V; must be decoupled locally to suppress supply noise affecting frequency stability. |
| 2 - CLOCK | CMOS push-pull clock output | Directly interfaces to µC/UART clock input; no series resistor or termination required; drives 1kΩ to GND or 500Ω to V+. |
| 3 - GND | Ground reference | Low-impedance return path; must be connected to system ground plane with minimal trace inductance. |
Key Features
| Feature | Design Value |
|---|---|
| No external components | Eliminates load capacitors, feedback resistors, and bias networks required by crystals/resonators - reduces BOM count and layout area. |
| Vibration/EMI immunity | Robust operation in harsh environments (e.g., engine bays, washing machines) due to solid-state design and absence of high-Z nodes. |
| Rail-to-rail 50% duty cycle | Ensures balanced high/low time for symmetric timing in synchronous logic and ADC sampling clocks. |
| Fast 5µs startup | Enables rapid wake-up from low-power states; compatible with short watchdog timeout windows. |
| –40°C to +125°C operation | Guaranteed performance across full industrial/automotive ambient range without derating. |
Applications
| Automotive Body Control Module | Smart Appliance MCU Clock |
|---|---|
Use Scenario: Timing source for 8-bit/32-bit MCUs managing door locks, lighting, and sensor polling in under-hood or cabin modules. IC Role / Device Role / Timing Role: Primary system clock generator replacing 13MHz crystal oscillator. Use Value: Immunity to engine vibration and EMI ensures deterministic boot and real-time task scheduling without clock glitches. |
Use Scenario: Clocking microcontrollers in washing machines, dishwashers, and HVAC controllers exposed to humidity and thermal cycling. IC Role / Device Role / Timing Role: Standalone clock source for UART communication and motor control timing. Use Value: Stable 13MHz output across –40°C to +125°C enables consistent serial baud rates and PWM resolution despite condensation or thermal stress. |
| Industrial Handheld Scanner | White Goods Display Controller |
Use Scenario: Powering ARM Cortex-M based barcode scanners requiring fast startup and shock resistance during drop events. IC Role / Device Role / Timing Role: System clock for MCU and image sensor interface logic. Use Value: 5µs startup and mechanical robustness eliminate need for crystal mounting grommets or additional ESD protection on clock lines. |
Use Scenario: Driving display microcontrollers and touch interface ICs in refrigerators and ovens with wide ambient temperature swings. IC Role / Device Role / Timing Role: Low-jitter clock for SPI/I²C peripherals and LCD refresh timing. Use Value: 180psP-P jitter at 16MHz reference ensures clean pixel clock edges and reduced display artifacts during thermal transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar silicon oscillator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SiT1533AI-H4-33E-13.000000 | MEMS-based; ±10ppm initial accuracy; 1.62V–3.63V supply; 1.2µA standby current | Better accuracy and lower power, but requires external 3.3V LDO and lacks ±10mA drive strength | Select when ultra-low power and tight frequency tolerance are prioritized over drive capability and supply flexibility. |
| DS1086L-13.0 | Tri-tempo oscillator; ±0.5% accuracy; 4.5V–5.5V only; 10mA drive; 10ms startup | Narrower supply range and slower startup; designed for legacy 5V-only systems | Choose only for drop-in replacement in existing 5V designs where 10ms startup is acceptable and 13MHz is pre-validated. |
Compared with SiT1533AI-H4-33E-13.000000 and DS1086L-13.0, the MAX7381AXR136+ offers broader supply range (2.7V–5.5V), faster startup (5µs vs. 10ms), higher drive (±10mA), and proven EMI/vibration resilience - making it optimal for new industrial and automotive MCU clocking where robustness and flexibility outweigh ultra-fine accuracy needs.
Availability
MAX7381AXR136+ is available at Aetrix Electronics and suitable for automotive body control modules, smart appliance MCUs, and industrial handheld scanners requiring stable component supply, extended temperature support, and vibration-immune timing.
Supply support for MAX7381AXR136+ 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 timing solutions for industrial, automotive, and computing applications.
The MAX7381 family delivers robust, low-cost silicon oscillators targeting replacement of ceramic resonators and crystals in microcontroller clock trees - emphasizing mechanical reliability, fast startup, and wide supply/temperature operation.
FAQ
What is the exact output frequency of the MAX7381AXR136+?
The MAX7381AXR136+ is factory-trimmed to 13.000000MHz nominal frequency. Initial accuracy is ±2% at +25°C, and frequency drift is bounded by ±100ppm/°C over –40°C to +125°C. No external tuning or calibration is required - the MAX7381AXR136+ delivers stable 13MHz output directly from power-on.
Does the MAX7381AXR136+ require external load capacitors like a crystal?
No, the MAX7381AXR136+ does not require external load capacitors or biasing components. It is a fully integrated oscillator with internal timing elements. Unlike quartz crystals, the MAX7381AXR136+ uses a silicon-based oscillator core and outputs a CMOS-compatible square wave directly - eliminating matching capacitors, feedback resistors, and associated PCB layout constraints.
Can the MAX7381AXR136+ drive a microcontroller clock input directly?
Yes, the MAX7381AXR136+ CLOCK pin provides a rail-to-rail CMOS push-pull output capable of driving standard µC clock inputs without series termination or level translation. It delivers ±10mA drive strength and maintains 40%–60% duty cycle across voltage and temperature - ensuring reliable edge detection and timing margin for devices like STM32, PIC, or Renesas RL78 MCUs.
What is the startup behavior of the MAX7381AXR136+?
The MAX7381AXR136+ achieves stable oscillation within 5µs after V+ rises above ~1.65V at +25°C. For reliable system reset, a voltage supervisor must hold downstream logic in reset until at least 20µs after V+ exceeds 2.7V. This ensures full internal biasing and output stabilization before clock-dependent peripherals begin operation - a critical timing requirement for the MAX7381AXR136+.
Is the MAX7381AXR136+ suitable for automotive applications?
Yes, the MAX7381AXR136+ is qualified for automotive use with guaranteed operation from –40°C to +125°C and functional specification over –55°C to +135°C. Its solid-state silicon oscillator architecture provides inherent immunity to mechanical vibration and EMI - validated in engine control units and body electronics where quartz crystals exhibit microphonic sensitivity or frequency shifts under shock.
MAX7381AXR136+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Base Resonator:
- -
- Type:
- -
- Frequency:
- -
- Function:
- -
- Output:
- -
- Voltage - Supply:
- -
- Frequency Stability:
- -
- Absolute Pull Range (APR):
- -
- Operating Temperature:
- -
- Spread Spectrum Bandwidth:
- -
- Current - Supply (Max):
- -
- Ratings:
- -
- Mounting Type:
- -
- Supplier Device Package:
- 4-VDFN (3.2x2.5)
- Size / Dimension:
- -
- Height - Seated (Max):
- -
MAX7381AXR136+ FAQ
1.How can I place an order for MAX7381AXR136+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX7381AXR136+ 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 MAX7381AXR136+ reliable?
The price and inventory of MAX7381AXR136+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX7381AXR136+ is usually 5 days.
3.What payment methods are accepted for MAX7381AXR136+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX7381AXR136+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX7381AXR136+?
MAX7381AXR136+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX7381AXR136+ 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 MAX7381AXR136+?
For technical support, including MAX7381AXR136+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX7381AXR136+ requirements.
6.How does Aetrix verify that MAX7381AXR136+ is sourced from the original manufacturer or authorized distributors?
All MAX7381AXR136+ 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 MAX7381AXR136+ meets industry standards.
7.What is the process for return or replacement of MAX7381AXR136+?
All MAX7381AXR136+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX7381AXR136+, 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 MAX7381AXR136+ part is unused and in its original packaging.
Return procedure for MAX7381AXR136+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX7381AXR136+ Tags
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