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Analog Devices Inc./Maxim Integrated MAX7375AXR445-T
- Part No.:
- MAX7375AXR445-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Oscillators
- Package:
- -
- Datasheet:
-
MAX7375AXR445-T.pdf
- Description:
- MAX7375 3-PIN SILICON OSCILLATOR
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX7375AXR445-T from Maxim Integrated is a factory-trimmed 3-pin silicon oscillator delivering a 4.45MHz Rail-to-Rail® square-wave clock output with ±2% initial accuracy, ±50ppm/°C temperature drift, and 5µs startup time. It replaces ceramic resonators and crystals in microcontroller and UART clocking for 2.7V–5.5V systems operating from −40°C to +125°C.
For engineers reviewing the MAX7375AXR445-T datasheet, MAX7375AXR445-T pinout, MAX7375AXR445-T application, or MAX7375AXR445-T equivalent, key selection criteria include factory-set frequency stability, vibration/EMI immunity, push-pull drive capability (±10mA), low jitter (160psP-P at 8MHz), and SC70-3 package compatibility in demanding industrial and automotive environments.
Technical Context
The MAX7375AXR445-T uses a direct silicon oscillator architecture-no PLL, no external load capacitors-generating its 4.45MHz output via integrated BiCMOS circuitry. Its push-pull CMOS output drives 1kΩ to ground or 500Ω to V+ within 300mV of rails, ensuring robust logic-level compatibility with µC clock inputs.
It exhibits minimal supply voltage sensitivity (<±0.2% normalized frequency shift over 2.7V–5.5V) and stable duty cycle (45–57%) across temperature and voltage. Startup occurs within 5µs after V+ exceeds 1.65V, with no short-cycle glitches during power-on/off transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency | 4.45MHz - factory-trimmed, no external tuning required |
| Initial Accuracy | ±2% at +25°C - eliminates need for post-assembly calibration |
| Temp Drift | ±50ppm/°C - enables stable timing in automotive (-40°C to +125°C) operation |
| Output Drive | ±10mA push-pull - directly interfaces µC clock inputs without level-shifting or buffering |
| Startup Time | 5µs - supports fast system wake-up and deterministic boot sequencing |
| Jitter (8MHz ref) | 160psP-P - meets timing margin requirements for UART and synchronous peripherals |
| Duty Cycle | 45–57% - ensures reliable edge detection in standard CMOS clock receivers |
Pinout & Package
MAX7375AXR445-T is housed in a 3-pin SC70-3 package (2.0mm × 1.25mm × 0.9mm), optimized for space-constrained PCB layouts in portable and automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive Supply Input | Accepts 2.7V–5.5V; powers internal oscillator and output stage |
| CLOCK | CMOS Push-Pull Output | Delivers rail-to-rail 4.45MHz square wave; drives µC clock input directly |
| GND | Ground Reference | Return path for supply and output current; must be low-impedance |
Key Features
| Feature | Design Value |
|---|---|
| No external components | Eliminates load capacitors, bias resistors, and crystal matching networks-reduces BOM count and layout complexity |
| High EMI/vibration immunity | Monolithic silicon design avoids high-impedance nodes and mechanical resonance-ideal for engine control units and white goods |
| Rail-to-Rail® output | Ensures full logic swing across supply range, guaranteeing noise margin with 3.3V and 5V µCs |
| Low 5ns rise/fall time | Minimizes signal distortion on short traces; reduces radiated emissions in compact assemblies |
| Wide temp range support | Specified and production-tested from −40°C to +125°C-meets AEC-Q200 Grade 1 thermal requirements |
Applications
| Automotive Body Control Module | Smart Appliance MCU Clock |
|---|---|
Use Scenario: Timing source for 8-bit/32-bit MCUs in door module, seat control, or lighting ECU under under-hood or cabin conditions. IC Role / Device Role / Timing Role: Primary system clock generator replacing quartz crystal; provides jitter-controlled 4.45MHz reference for instruction execution and CAN peripheral timing. Use Value: Immunity to engine vibration and thermal cycling eliminates crystal microphonics and frequency drift-improving system reliability over lifetime. | Use Scenario: Clocking microcontrollers in washing machine control boards exposed to humidity, detergent vapors, and wide ambient temperature swings. IC Role / Device Role / Timing Role: Standalone clock source for real-time monitoring, motor control, and UI responsiveness in appliance main control unit. Use Value: Absence of high-impedance nodes prevents moisture-induced timing faults; SC70-3 footprint enables compact, sealed PCB designs. |
| Industrial UART Bridge | Portable Medical Sensor Hub |
Use Scenario: Providing precise baud-rate timing for RS-232/RS-485 transceivers in programmable logic controllers and HMI gateways. IC Role / Device Role / Timing Role: Stable 4.45MHz clock feeding UART prescaler to generate accurate 115.2kbps or 921.6kbps data rates. Use Value: ±50ppm/°C drift ensures <±0.5% baud error across industrial temperature range-avoiding frame loss or retransmission overhead. | Use Scenario: Synchronizing low-power sensor sampling and BLE radio wakeup in handheld diagnostic devices with tight battery life constraints. IC Role / Device Role / Timing Role: Low-jitter, fast-start clock enabling rapid transition from sleep to active measurement mode. Use Value: 5µs startup and 2.7V minimum operation allow immediate clock availability after wake-up-reducing latency and extending battery runtime. |
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-4.450000M | MEMS-based; ±10ppm initial accuracy; 1.62–3.63V supply; 1.5µs startup | Narrower voltage range; higher accuracy but lower drive strength (±4mA) | Preferred where ultra-low jitter (<100ps) and tighter initial tolerance are critical; requires level-shifting for 5V µCs |
| ABM3B-4.450MHZ-D2Y-T | Quartz crystal; requires external capacitors and Pierce oscillator circuit; ±20ppm tolerance | Higher EMI susceptibility; longer startup (>10ms); needs PCB layout optimization | Used when legacy crystal footprint must be retained; adds design complexity and test risk |
Compared with SiT1533AI-H4-33E-4.450000M and ABM3B-4.450MHZ-D2Y-T, the MAX7375AXR445-T offers superior drive strength, wider supply range, and simpler integration-making it optimal for cost-sensitive, ruggedized 3V–5V MCU clocking where ±2% accuracy suffices.
Availability
MAX7375AXR445-T is available at Aetrix Electronics and suitable for automotive body electronics, smart appliance control units, and industrial UART bridge designs requiring stable component supply, extended temperature operation, and vibration-resistant timing.
Supply support for MAX7375AXR445-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 power management ICs for industrial, automotive, and computing applications.
The MAX7375 series was developed as a drop-in silicon replacement for ceramic resonators and crystals-targeting cost-sensitive, high-reliability clocking in microcontroller and UART systems across harsh environments.
FAQ
What is the exact factory-trimmed frequency of the MAX7375AXR445-T?
The MAX7375AXR445-T is factory-trimmed to 4.45MHz, as indicated by the "445" suffix in the part number. This frequency is fixed and non-adjustable; no external components or programming are required to set or maintain it. The device achieves ±2% initial accuracy at +25°C and maintains stability across its full −40°C to +125°C operating range.
Does the MAX7375AXR445-T require external load capacitors like a crystal oscillator?
No, the MAX7375AXR445-T does not require external load capacitors. It is a fully integrated silicon oscillator with no reliance on external resonant components. Unlike quartz crystals or ceramic resonators, the MAX7375AXR445-T generates its 4.45MHz output using on-die BiCMOS circuitry-eliminating capacitors, feedback resistors, and matching networks entirely.
Can the MAX7375AXR445-T operate from a 3.3V supply and drive a 5V microcontroller clock input?
The MAX7375AXR445-T operates from 2.7V to 5.5V and delivers a Rail-to-Rail® CMOS output. When powered from 3.3V, its CLOCK pin swings from near 0V to near 3.3V-insufficient to meet typical 5V µC VIH(min) thresholds (often ≥3.5V). For 5V µCs, power the MAX7375AXR445-T from 5V or use a level-shifter; do not assume 3.3V operation guarantees 5V interface compatibility.
What is the maximum capacitive load the MAX7375AXR445-T can drive reliably?
The MAX7375AXR445-T is characterized with CL = 10pF, 50pF, and 100pF loads in its datasheet. Its ±10mA push-pull output supports heavier loads than typical crystals, but sustained operation into >100pF may degrade rise/fall times and increase jitter. For loads >100pF, add local decoupling (≥1000× load capacitance) and verify timing margins in-system.
Is the MAX7375AXR445-T qualified for automotive applications?
Yes-the MAX7375AXR445-T is specified and production-tested over −40°C to +125°C, meeting AEC-Q200 Grade 1 thermal requirements. Its monolithic silicon construction provides inherent resistance to shock, vibration, and EMI-key advantages over quartz solutions in automotive body electronics and infotainment subsystems.
MAX7375AXR445-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):
- -
MAX7375AXR445-T FAQ
1.How can I place an order for MAX7375AXR445-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX7375AXR445-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 MAX7375AXR445-T reliable?
The price and inventory of MAX7375AXR445-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX7375AXR445-T is usually 5 days.
3.What payment methods are accepted for MAX7375AXR445-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX7375AXR445-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX7375AXR445-T?
MAX7375AXR445-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX7375AXR445-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 MAX7375AXR445-T?
For technical support, including MAX7375AXR445-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX7375AXR445-T requirements.
6.How does Aetrix verify that MAX7375AXR445-T is sourced from the original manufacturer or authorized distributors?
All MAX7375AXR445-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 MAX7375AXR445-T meets industry standards.
7.What is the process for return or replacement of MAX7375AXR445-T?
All MAX7375AXR445-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX7375AXR445-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 MAX7375AXR445-T part is unused and in its original packaging.
Return procedure for MAX7375AXR445-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX7375AXR445-T Tags
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ECS-2333-160-BN-TR
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ECS-2333-240-BN-TR
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KYOCERA AVX
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O 25,0-JO32-B-1V3-1-T1-LF
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SIT1533AI-H4-DCC-32.768E
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ECS-2333-500-BN-TR
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COM1305-50.000-EXT-T-TR
Raltron Electronics
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SG-210STF 24.0000ML0
EPSON
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ECS-3225MV-320-CN-TR
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ECS-2033-240-BN
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ECS-2333-120-BN-TR
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