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Analog Devices Inc./Maxim Integrated MAX7381AXR136+T
- Part No.:
- MAX7381AXR136+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Oscillators
- Package:
- -
- Datasheet:
-
MAX7381AXR136+T.pdf
- Description:
- MAX7381 3-PIN SILICON OSCILLATOR
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
MAX7381AXR136+T 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 offers ±2% initial frequency accuracy, -40°C to +125°C operation, 5µs startup time, and ±100ppm/°C temperature drift-designed as a vibration- and EMI-resistant replacement for ceramic resonators and crystals in automotive and appliance control units.
For engineers reviewing the MAX7381AXR136+T datasheet, MAX7381AXR136+T pinout, MAX7381AXR136+T application, or MAX7381AXR136+T equivalent, key selection criteria include its no-PLL architecture, 13MHz fixed-frequency output, SC70-3 footprint compatibility, push-pull CMOS drive capability, and guaranteed operation across extended industrial temperature range without external load capacitors.
Technical Context
The MAX7381AXR136+T implements a direct silicon-based oscillator core without phase-locked loop (PLL) circuitry, generating stable 13MHz output via BiCMOS process. Its push-pull output stage drives 1kΩ to ground or 500Ω to V+, eliminating high-impedance nodes and ensuring immunity to humidity, vibration, and EMI.
Frequency stability is maintained across 2.7V–5.5V supply and -40°C to +125°C ambient, with 180psP-P jitter at 16MHz (scalable), 5ns rise/fall times, and 40–60% duty cycle tolerance over voltage and temperature-enabling drop-in replacement of quartz-based timing sources in noise-sensitive embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency | 13MHz nominal; factory-trimmed, no external tuning required |
| Initial Accuracy | ±2% at +25°C; eliminates need for post-solder calibration |
| Temp Drift | ±100ppm/°C; stable timing across full -40°C to +125°C range |
| Supply Range | 2.7V to 5.5V; interoperable with 3V, 3.3V, and 5V logic domains |
| Startup Time | 5µs; enables fast system boot without external reset coordination |
| Output Drive | ±10mA; directly drives MCU clock inputs without level-shifting or buffering |
| Jitter (16MHz) | 180psP-P; meets timing margin requirements for high-speed UART and SPI peripherals |
Pinout & Package
The MAX7381AXR136+T is housed in a 3-pin SC70-3 surface-mount package (2.0mm × 2.1mm × 0.9mm), optimized for space-constrained PCB layouts in automotive and white-goods applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - V+ | Positive supply input | Accepts 2.7V–5.5V; requires local 0.1µF ceramic bypass to GND |
| 2 - CLOCK | CMOS push-pull clock output | Delivers rail-to-rail 13MHz square wave; drives MCU/UART clock pins directly |
| 3 - GND | Ground reference | Low-impedance return path; must be connected to system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| No PLL architecture | Eliminates lock-time uncertainty and phase noise associated with feedback-based oscillators |
| Rail-to-rail CMOS output | Ensures full logic-level swing across supply range, compatible with all standard MCU clock inputs |
| Vibration/EMI immunity | Robust operation in engine compartments and motor-driven appliances where crystal oscillators fail |
| Zero external components | Removes load capacitors, bias resistors, and feedback networks required by crystal/resonator circuits |
| Fast 5µs startup | Reduces power-on delay in battery-powered handheld and portable equipment |
Applications
| Automotive Engine Control Units | Smart Appliance Microcontrollers |
|---|---|
Use Scenario: Timing-critical ignition sequencing and sensor sampling in under-hood ECUs exposed to thermal cycling and mechanical shock. IC Role / Device Role / Timing Role: Primary system clock source replacing quartz crystals vulnerable to vibration-induced frequency shift. Use Value: Maintains ±2% frequency accuracy across -40°C to +125°C and survives 20g vibration per AEC-Q200, enabling reliable real-time control. | Use Scenario: Synchronizing display refresh, motor control, and communication stacks in washing machines and refrigerators. IC Role / Device Role / Timing Role: Fixed-frequency clock generator for 8-bit and 32-bit MCUs managing multiple concurrent I/O tasks. Use Value: Eliminates moisture-related start-up failures common with ceramic resonators in humid environments. |
| Industrial UART Communication Modules | Portable Medical Diagnostic Devices |
Use Scenario: Providing baud-rate-stable clocks for RS-232/RS-485 transceivers in factory automation gateways. IC Role / Device Role / Timing Role: Precision timing reference for asynchronous serial data transmission at up to 1Mbps. Use Value: 180psP-P jitter ensures <0.1% bit-error rate margin at 16× oversampling, even with noisy 24V DC supply rails. | Use Scenario: Clocking low-power ARM Cortex-M0+ processors in handheld blood glucose meters and pulse oximeters. IC Role / Device Role / Timing Role: Low-jitter, fast-start oscillator supporting rapid wake-from-sleep transitions. Use Value: 5µs startup and 2.7V minimum operation extend battery life while guaranteeing deterministic boot timing. |
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; 1.62–3.63V supply; 1.54mm × 0.84mm DFN | Narrower supply range; tighter accuracy but higher cost; requires different PCB footprint | Select when ultra-high stability and miniaturization outweigh cost and design change effort |
| ABM3B-13.000MHZ-B2-T | Quartz crystal; requires external load capacitors and Pierce oscillator circuit; ±20ppm tolerance | Higher EMI susceptibility; longer startup (>10ms); needs PCB layout revision for oscillator loop | Select only if legacy crystal-based design must be minimally modified and vibration exposure is negligible |
Compared with SiT1533AI-H4-33E-13.000000 and ABM3B-13.000MHZ-B2-T, the MAX7381AXR136+T provides superior EMI/vibration resilience, simpler integration (no external components), and broader supply voltage support-making it optimal for cost-sensitive, ruggedized embedded timing where ±2% accuracy suffices.
Availability
MAX7381AXR136+T is available at Aetrix Electronics and suitable for automotive engine control units, smart appliance microcontrollers, and industrial UART communication modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX7381AXR136+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 timing ICs for demanding industrial, automotive, and computing applications.
The MAX7381 series belongs to Maxim's silicon oscillator product line, engineered to replace quartz and ceramic timing elements with robust, integrated, no-external-component solutions for microcontroller clocking in harsh environments.
FAQ
What is the exact output frequency of the MAX7381AXR136+T?
The MAX7381AXR136+T is factory-trimmed to a nominal output frequency of 13.000MHz. This value is specified in the Ordering Information table and confirmed in the Selector Guide; it does not require external calibration or adjustment. The device maintains this frequency across its full operating supply (2.7V–5.5V) and temperature (-40°C to +125°C) ranges, with ±2% initial accuracy and ±100ppm/°C drift.
Does the MAX7381AXR136+T require external load capacitors or biasing components?
No, the MAX7381AXR136+T requires zero external components. Unlike quartz crystals or ceramic resonators, it integrates all oscillator circuitry on-die and delivers a push-pull CMOS output capable of directly driving microcontroller clock inputs. The only recommended external component is a 0.1µF ceramic capacitor between V+ and GND for power-supply decoupling-explicitly stated in the Pin Description and Power-Supply Considerations sections of the datasheet.
What is the startup time specification for the MAX7381AXR136+T?
The MAX7381AXR136+T achieves stable oscillation within 5µs after V+ rises above the functional threshold (~1.65V at +25°C). This value is guaranteed in the Electrical Characteristics table under "Startup Time" and verified in the Typical Operating Characteristics figure toc08. It enables rapid system initialization in portable and battery-powered applications where boot latency must be minimized.
Can the MAX7381AXR136+T operate in automotive under-hood environments?
Yes, the MAX7381AXR136+T is qualified for automotive under-hood use. It is specified from -40°C to +125°C and guaranteed to function from -55°C to +135°C. Its silicon oscillator architecture provides inherent resistance to vibration, shock, and EMI-key failure modes for quartz crystals in engine compartments. The device meets reliability requirements for automotive control modules as documented in its Absolute Maximum Ratings and Applications sections.
Is the MAX7381AXR136+T pin-compatible with other MAX7381 variants like MAX7381AXR126-T or MAX7381AXR166-T?
Yes, all MAX7381 variants-including MAX7381AXR136+T, MAX7381AXR126-T, and MAX7381AXR166-T-share identical SC70-3 package, pinout (V+, CLOCK, GND), and electrical interface. They differ only in factory-set output frequency (12MHz, 13MHz, 16MHz) and top-mark codes (APG, APE, APH). No PCB redesign is needed when substituting between these variants, provided system timing margins accommodate the frequency change.
MAX7381AXR136+T 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+T FAQ
1.How can I place an order for MAX7381AXR136+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX7381AXR136+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 MAX7381AXR136+T reliable?
The price and inventory of MAX7381AXR136+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX7381AXR136+T is usually 5 days.
3.What payment methods are accepted for MAX7381AXR136+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX7381AXR136+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX7381AXR136+T?
MAX7381AXR136+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX7381AXR136+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 MAX7381AXR136+T?
For technical support, including MAX7381AXR136+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX7381AXR136+T requirements.
6.How does Aetrix verify that MAX7381AXR136+T is sourced from the original manufacturer or authorized distributors?
All MAX7381AXR136+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 MAX7381AXR136+T meets industry standards.
7.What is the process for return or replacement of MAX7381AXR136+T?
All MAX7381AXR136+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX7381AXR136+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 MAX7381AXR136+T part is unused and in its original packaging.
Return procedure for MAX7381AXR136+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX7381AXR136+T Tags
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