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Analog Devices Inc./Maxim Integrated MAX7375AXR485+
- Part No.:
- MAX7375AXR485+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Oscillators
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX7375AXR485+.pdf
- Description:
- IC SUPERVISOR
- Quantity:
- Payment:
- Shipping:
Inventory:1,438
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Product details
Overview
MAX7375AXR485+ from Maxim Integrated is a factory-trimmed 4.00MHz silicon oscillator in SC70-3 package, designed as a vibration- and EMI-resistant clock source for microcontrollers and UARTs in 2.7V–5.5V systems. It delivers rail-to-rail 50% duty cycle square-wave output, ±2% initial accuracy at +25°C, ±50ppm/°C temp drift, and 5ns rise/fall time with 160psP-P jitter at 8MHz (scaled).
For engineers reviewing the MAX7375AXR485+ datasheet, MAX7375AXR485+ pinout, MAX7375AXR485+ application, or MAX7375AXR485+ equivalent, key selection criteria include its no-external-components operation, fast 5µs startup, -40°C to +125°C industrial temperature range, and push-pull CMOS output capable of ±10mA drive into 1kΩ or 500Ω loads.
Technical Context
The MAX7375AXR485+ uses a direct silicon oscillator architecture-no PLL-generating stable 4.00MHz output with minimal supply voltage sensitivity (±0.2% over 2.7V–5.5V) and monotonic duty cycle variation (47%–55% across voltage and temperature). Its push-pull output eliminates high-impedance nodes, reducing susceptibility to humidity and EMI.
It operates across full 2.7V–5.5V supply range with supply current scaling from 1.7mA (typ) to 4.2mA (max) at V+ = 5V and TA = +25°C, and maintains functional stability up to +135°C (characterized), though production-tested from -40°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency | 4.00MHz nominal; factory-trimmed, no external tuning required |
| Initial Accuracy | ±2% at +25°C; ensures reliable µC clock initialization without calibration |
| Temp Drift | ±50ppm/°C; enables stable timing across industrial temperature range |
| Supply Voltage | 2.7V to 5.5V; compatible with 3V, 3.3V, and 5V logic domains |
| Output Drive | ±10mA push-pull; directly drives µC clock inputs without level-shifting or buffering |
| Startup Time | 5µs; supports fast system wake-up and low-power mode recovery |
| Jitter (8MHz ref) | 160psP-P; meets UART and synchronous peripheral timing margins |
Pinout & Package
Package: SC70-3 (3-pin surface-mount, 1.25mm × 0.85mm × 0.55mm body, 0.65mm pitch). RoHS-compliant, tape-and-reel only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (V+) | Positive Supply Input | Accepts 2.7V–5.5V; requires local 0.1µF ceramic decoupling to GND |
| 2 (CLOCK) | CMOS Push-Pull Output | Delivers rail-to-rail square wave; drives µC clock input directly, no load caps needed |
| 3 (GND) | Ground Reference | Return path for supply and output; must be low-impedance connection to system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| No external components | Eliminates load capacitors, bias resistors, and feedback networks required by crystals/resonators |
| Vibration/EMI immunity | Silicon oscillator core avoids mechanical resonance and high-impedance node coupling issues |
| Rail-to-rail 50% duty cycle | Ensures balanced high/low time for synchronous logic and UART sampling windows |
| Low-output jitter | 160psP-P at 8MHz (scalable) supports reliable serial communication at up to 1Mbps |
| Fast startup | Stabilizes within 5µs after V+ exceeds 1.65V, enabling rapid power-cycle response |
Applications
| White Goods Control Systems | Industrial Microcontroller Clocking |
|---|---|
Use Scenario: Timing-critical control loops in washing machines, dishwashers, and HVAC units operating in humid, vibration-prone environments. IC Role / Device Role / Timing Role: Primary system clock source for 8-/16-bit MCUs replacing ceramic resonators subject to mechanical stress. Use Value: Immunity to cabinet vibration and condensation ensures consistent boot timing and real-time task scheduling over product lifetime. |
Use Scenario: Clocking embedded controllers in programmable logic controllers (PLCs) and motor drives exposed to wide ambient temperature swings (-40°C to +125°C). IC Role / Device Role / Timing Role: Stable, factory-calibrated oscillator providing deterministic instruction execution timing independent of board-level noise. Use Value: ±50ppm/°C drift and ±2% initial accuracy maintain UART baud rate error <0.5% across full temperature range. |
| Portable Medical Devices | Smart Appliance User Interfaces |
Use Scenario: Battery-powered glucose meters and portable ECG monitors requiring fast wake-from-sleep and low-jitter timing for ADC sampling. IC Role / Device Role / Timing Role: Low-power, fast-start oscillator synchronizing MCU and analog front-end peripherals. Use Value: 5µs startup and 160psP-P jitter enable sub-millisecond sensor readout cycles with minimal timing uncertainty. |
Use Scenario: Touch-button and display timing in smart refrigerators and ovens where EMI from compressors and heating elements disrupts crystal-based clocks. IC Role / Device Role / Timing Role: EMI-hardened clock source for UI microcontrollers, eliminating spurious resets during compressor cycling. Use Value: Push-pull output and absence of high-impedance nodes prevent false triggering caused by conducted noise on PCB traces. |
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-4.000000 | MEMS oscillator; ±10ppm initial accuracy; 1.62V–3.63V supply; 1.5µs startup | Narrower voltage range; superior accuracy but higher cost; optimized for ultra-low-power wearables | Select when ±10ppm accuracy and sub-2µs startup outweigh cost and voltage flexibility |
| ABM3B-4.000MHZ-D2Y-T | 4.00MHz ceramic resonator; requires external load caps and inverter; ±0.5% accuracy; 10ms startup | Higher EMI susceptibility; longer stabilization; needs PCB layout adjustments for stability | Select only for legacy designs where resonator footprint and BOM compatibility are mandatory |
Compared with SiT1533AI-H4-33E-4.000000, the MAX7375AXR485+ offers wider supply range and lower cost but trades off initial accuracy; compared with ABM3B-4.000MHZ-D2Y-T, it eliminates external components and cuts startup time by >99%, improving system responsiveness in dynamic power modes.
Availability
MAX7375AXR485+ is available at Aetrix Electronics and suitable for white goods control systems, industrial microcontroller clocking, and portable medical devices requiring stable component supply, long-term lifecycle support, and guaranteed factory-trimmed frequency performance.
Supply support for MAX7375AXR485+ 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 MAX7375AXR485+ belongs to Maxim's silicon oscillator family, engineered to replace quartz and ceramic timing devices in cost-sensitive, noise-prone, and space-constrained embedded systems where reliability under mechanical stress and environmental variation is critical.
FAQ
What is the exact output frequency tolerance of the MAX7375AXR485+ at room temperature?
The MAX7375AXR485+ has ±2% initial frequency accuracy at +25°C and V+ = 3.0V, as specified in the Electrical Characteristics table. This tolerance expands to ±4% across the full 2.7V–5.5V supply range at +25°C. The device does not require calibration or trimming after assembly, and this specification is guaranteed by design and characterization-not production tested per unit.
Can the MAX7375AXR485+ directly replace a 4MHz ceramic resonator in an existing design?
Yes-the MAX7375AXR485+ is a drop-in replacement for 4MHz ceramic resonators. It requires no external load capacitors, feedback resistors, or inverter buffers. Simply remove the resonator and associated components, connect V+ and GND, and route the CLOCK pin to the MCU's XTAL1 or CLKIN pin. Ensure the MCU is configured for external clock input mode, not crystal oscillator mode.
Does the MAX7375AXR485+ support operation beyond its rated -40°C to +125°C range?
The MAX7375AXR485+ was characterized to function normally up to +135°C, but production testing and qualification are limited to -40°C to +125°C. Operation outside this range is not guaranteed or supported by warranty. For extended-range applications, contact Analog Devices (formerly Maxim) for characterization data and feasibility assessment before design-in.
What is the maximum capacitive load the MAX7375AXR485+ can drive reliably?
The MAX7375AXR485+ is specified with CL = 10pF in timing measurements, but its ±10mA push-pull output can drive loads up to 50pF while maintaining rise/fall times <10ns and jitter increase <2×. For >50pF loads, add series resistance (22Ω–47Ω) near the output pin to damp ringing and preserve signal integrity without degrading startup or duty cycle.
How does the MAX7375AXR485+ handle power-supply noise, and what decoupling is recommended?
The MAX7375AXR485+ requires a 0.1µF X7R ceramic capacitor placed between V+ and GND, mounted as close as possible to pins 1 and 3. This minimizes supply impedance and preserves power-supply rejection ratio (PSRR). If driving large capacitive loads (>50pF) or operating in noisy environments, add a 1µF–10µF bulk capacitor nearby. Avoid shared supply traces with switching regulators or high-current digital ICs.
MAX7375AXR485+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- MAX7375
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Base Resonator:
- MEMS
- Type:
- XO (Standard)
- Frequency:
- -
- Function:
- -
- Output:
- CMOS
- Voltage - Supply:
- 2.7V ~ 5.5V
- Frequency Stability:
- -
- Absolute Pull Range (APR):
- -
- Operating Temperature:
- -40°C ~ 125°C
- Spread Spectrum Bandwidth:
- -
- Current - Supply (Max):
- -
- Ratings:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-VDFN (3.2x2.5)
- Size / Dimension:
- 0.087" L x 0.053" W (2.20mm x 1.35mm)
- Height - Seated (Max):
- 0.043" (1.10mm)
MAX7375AXR485+ FAQ
1.How can I place an order for MAX7375AXR485+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX7375AXR485+ 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 MAX7375AXR485+ reliable?
The price and inventory of MAX7375AXR485+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX7375AXR485+ is usually 5 days.
3.What payment methods are accepted for MAX7375AXR485+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX7375AXR485+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX7375AXR485+?
MAX7375AXR485+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX7375AXR485+ 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 MAX7375AXR485+?
For technical support, including MAX7375AXR485+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX7375AXR485+ requirements.
6.How does Aetrix verify that MAX7375AXR485+ is sourced from the original manufacturer or authorized distributors?
All MAX7375AXR485+ 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 MAX7375AXR485+ meets industry standards.
7.What is the process for return or replacement of MAX7375AXR485+?
All MAX7375AXR485+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX7375AXR485+, 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 MAX7375AXR485+ part is unused and in its original packaging.
Return procedure for MAX7375AXR485+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX7375AXR485+ Tags
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