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Analog Devices Inc./Maxim Integrated MAX7381AXR116+T
- Part No.:
- MAX7381AXR116+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Oscillators
- Package:
- -
- Datasheet:
-
MAX7381AXR116+T.pdf
- Description:
- MAX7381 3-PIN SILICON OSCILLATOR
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX7381AXR116+T from Maxim Integrated is a factory-trimmed 3-pin silicon oscillator delivering a precise 11MHz rail-to-rail square-wave clock output with ±2% initial accuracy, 5µs startup time, and ±100ppm/°C temperature drift-designed as a robust, vibration- and EMI-resistant replacement for ceramic resonators and crystal oscillators in microcontroller and UART clocking applications operating from 2.7V to 5.5V.
For engineers reviewing the MAX7381AXR116+T datasheet, MAX7381AXR116+T pinout, MAX7381AXR116+T application, or MAX7381AXR116+T equivalent, key selection considerations include its SC70-3 package, no-PLL architecture, 11MHz fixed frequency, -40°C to +125°C operational range, and compatibility with 3V/3.3V/5V systems without external load capacitors or biasing components.
Technical Context
The MAX7381AXR116+T implements a fully integrated BiCMOS oscillator core that generates frequency directly-without PLL multiplication or external timing components-ensuring deterministic startup and low jitter (180psP-P at 16MHz, scalable per frequency). Its push-pull CMOS output drives 1kΩ to GND or 500Ω to V+, delivering ±10mA drive strength with 5ns rise/fall times.
It operates across 2.7V–5.5V supply rails and maintains stable duty cycle (40%–60%) and frequency accuracy over temperature (-40°C to +125°C), with guaranteed functional operation from -55°C to +135°C. No high-impedance nodes exist, making it inherently resistant to EMI, humidity, and mechanical vibration-critical for automotive and appliance environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency | 11MHz nominal; factory-trimmed, no adjustment required-enables drop-in replacement of crystals/resonators in µC clock trees. |
| Initial Accuracy | ±2% at +25°C; eliminates need for post-solder calibration or trimming circuits in production. |
| Temp Drift | ±100ppm/°C over -40°C to +125°C; ensures stable timing across automotive under-hood and industrial control environments. |
| Startup Time | 5µs; allows rapid system wake-up and synchronizes with µC reset timing without external delay circuitry. |
| Supply Range | 2.7V to 5.5V; supports direct interfacing with 3V, 3.3V, and 5V logic domains without level-shifting. |
| Output Drive | ±10mA push-pull; drives heavy capacitive loads (up to 100pF) and long traces without buffer stages. |
| Jitter (P-P) | 180psP-P at 16MHz (scalable); meets timing margin requirements for UART baud-rate generation and synchronous peripherals. |
Pinout & Package
MAX7381AXR116+T is housed in a space-saving 3-pin SC70-3 package (JEDEC MO-203AA), with exposed pad not electrically connected. Pin 1 = V+, Pin 2 = CLOCK (push-pull CMOS output), Pin 3 = GND. A 0.1µF ceramic capacitor must be placed between V+ and GND, mounted adjacent to the device.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive supply input | Accepts 2.7V–5.5V; requires local 0.1µF bypass to GND for PSRR integrity and noise immunity. |
| CLOCK | CMOS square-wave output | Push-pull, rail-to-rail, 50% typical duty cycle; directly interfaces µC/UART clock inputs without series termination or AC coupling. |
| GND | Reference ground | 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-reduces BOM count and PCB area vs. crystal-based solutions. |
| Vibration/EMI immunity | Zero high-impedance nodes and monolithic BiCMOS design prevent frequency shift or stoppage under mechanical shock or RF noise. |
| Rail-to-rail output | Ensures full logic swing across supply range, guaranteeing reliable clock edge detection by µC inputs regardless of V+ variation. |
| Wide temp range | -40°C to +125°C specification enables use in engine control units, smart meters, and white-goods motor controllers without derating. |
| Fast startup | 5µs stabilization enables immediate clock availability after power-on, simplifying reset sequencing in battery-powered handhelds. |
Applications
| Automotive Body Control Module | Smart Appliance MCU Clock |
|---|---|
|
Use Scenario: Timing-critical CAN/LIN communication and sensor polling in door modules and lighting controllers exposed to under-hood thermal cycling and EMI. IC Role / Device Role / Timing Role: Primary system clock source for 8-bit/16-bit MCUs replacing quartz crystals prone to microphonics and frequency drift. Use Value: Maintains ±2% frequency stability over -40°C to +125°C and resists vibration-induced jitter-reducing communication errors and field returns. |
Use Scenario: Synchronizing motor control, display refresh, and user-interface response in washing machines, dishwashers, and HVAC systems. IC Role / Device Role / Timing Role: Fixed-frequency clock generator for main application MCU, eliminating crystal aging and moisture sensitivity in humid cabinet environments. Use Value: Delivers 11MHz with <5µs startup and no external caps-enabling faster boot and higher reliability than ceramic resonators in condensing enclosures. |
| Industrial UART Bridge | Portable Medical Device Clock |
|
Use Scenario: Providing stable baud-rate timing for RS-485/RS-232 bridge ICs in programmable logic controllers and remote I/O terminals. IC Role / Device Role / Timing Role: Low-jitter clock reference for UART peripherals requiring consistent bit timing across wide supply and temperature ranges. Use Value: 180psP-P jitter at 11MHz ensures <0.1% timing error in 9600–115200 baud operation-meeting EN 55032 Class A emission limits. |
Use Scenario: Powering real-time clocks and data-acquisition sampling in handheld glucose meters and portable ECG monitors. IC Role / Device Role / Timing Role: Primary clock for ultra-low-power µC during active measurement cycles, with fast wake-up from standby. Use Value: 5µs startup and 2.7V minimum operation enable immediate timing recovery after battery brownout-preserving data integrity and user session continuity. |
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-11.000000 | 11MHz MEMS oscillator; ±10ppm initial accuracy; 1.62–3.63V supply; 1.5µs startup; 2.0 × 1.2mm DFN. | Higher accuracy and lower power, but requires tighter layout control for ESD-sensitive MEMS element and lacks SC70 footprint compatibility. | Select when sub-50ppm total stability over temperature is mandatory and board space allows DFN placement. |
| ABM3B-11.000MHZ-B2-T | 11MHz fundamental-mode quartz crystal; ±20ppm tolerance; requires external load caps and Pierce oscillator circuit; 3.2 × 2.5mm SMD. | Lower cost per unit but adds two 12–22pF capacitors, increases layout complexity, and suffers from start-up delay (>10ms) and microphonic sensitivity. | Select only for legacy designs where crystal-based timing is mandated by qualification standards or existing schematic reuse. |
Compared with SiT1533AI-H4-33E-11.000000 and ABM3B-11.000MHZ-B2-T, MAX7381AXR116+T offers superior EMI/vibration resilience and simpler integration (no caps, no layout constraints), trading off initial accuracy for ruggedness and ease-of-use in harsh environments.
Availability
MAX7381AXR116+T is available at Aetrix Electronics and suitable for automotive body control modules, smart appliance microcontrollers, industrial UART bridges, and portable medical devices requiring stable component supply, extended temperature support, and simplified clock-tree design.
Supply support for MAX7381AXR116+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) is a U.S.-based semiconductor company specializing in precision analog, mixed-signal, and power-management ICs for industrial, automotive, and computing applications.
The MAX7381 family was designed as a rugged, plug-and-play silicon oscillator alternative to quartz and ceramic timing devices-targeting high-reliability applications where environmental stress, board space, and BOM simplicity are critical.
FAQ
What is the exact output frequency of the MAX7381AXR116+T?
The MAX7381AXR116+T is factory-trimmed to deliver a nominal output frequency of 11.000MHz. This value is specified with ±2% initial accuracy at +25°C and remains stable across the full -40°C to +125°C operating range, with ±100ppm/°C temperature coefficient. The frequency is fixed and non-adjustable-no external components or programming are required to set or maintain it.
Does the MAX7381AXR116+T require external load capacitors like quartz crystals?
No, the MAX7381AXR116+T does not require any external load capacitors, feedback resistors, or biasing components. It is a fully integrated oscillator with an internal BiCMOS timing core and push-pull CMOS output stage. Unlike quartz crystals or ceramic resonators, the MAX7381AXR116+T operates as a self-contained clock source-only a 0.1µF bypass capacitor between V+ and GND is needed for power-supply decoupling.
Can the MAX7381AXR116+T operate from a 3.3V supply?
Yes, the MAX7381AXR116+T is fully specified to operate from 2.7V to 5.5V, making it compatible with standard 3.3V logic systems. At 3.3V, it delivers rail-to-rail output swing, maintains 5µs startup time, and sustains ±2% initial accuracy and ±100ppm/°C temperature drift. Electrical characteristics-including output drive (±10mA), rise/fall time (5ns), and jitter-are guaranteed across this entire voltage range.
Is the MAX7381AXR116+T pin-compatible with other MAX7381 variants?
Yes, all MAX7381 variants-including MAX7381AXR106-T, MAX7381AXR126-T, MAX7381AXR146-T, and MAX7381AXR166-T-share identical SC70-3 packaging and pinout (V+, CLOCK, GND). The MAX7381AXR116+T is mechanically and electrically interchangeable with these parts on the same PCB footprint; only the output frequency differs (11MHz vs. 10/12/14/16MHz), so no layout changes are needed when selecting among them.
What is the maximum capacitive load the MAX7381AXR116+T can drive?
The MAX7381AXR116+T is characterized to drive up to 100pF load capacitance while maintaining 5ns rise/fall times and stable 40%–60% duty cycle. Its ±10mA push-pull output ensures signal integrity even with longer PCB traces or multiple fan-outs. For loads exceeding 100pF, Maxim recommends increasing the V+/GND bypass capacitor to ≥1000× the output-load capacitance (e.g., ≥100nF for 100pF load) to preserve startup behavior and jitter performance.
MAX7381AXR116+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):
- -
MAX7381AXR116+T FAQ
1.How can I place an order for MAX7381AXR116+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX7381AXR116+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 MAX7381AXR116+T reliable?
The price and inventory of MAX7381AXR116+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX7381AXR116+T is usually 5 days.
3.What payment methods are accepted for MAX7381AXR116+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX7381AXR116+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX7381AXR116+T?
MAX7381AXR116+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX7381AXR116+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 MAX7381AXR116+T?
For technical support, including MAX7381AXR116+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX7381AXR116+T requirements.
6.How does Aetrix verify that MAX7381AXR116+T is sourced from the original manufacturer or authorized distributors?
All MAX7381AXR116+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 MAX7381AXR116+T meets industry standards.
7.What is the process for return or replacement of MAX7381AXR116+T?
All MAX7381AXR116+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX7381AXR116+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 MAX7381AXR116+T part is unused and in its original packaging.
Return procedure for MAX7381AXR116+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX7381AXR116+T Tags
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