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Analog Devices Inc./Maxim Integrated MAX7393ATTRD+
- Part No.:
- MAX7393ATTRD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Oscillators
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
MAX7393ATTRD+.pdf
- Description:
- OSC XO 4.0000MHZ CMOS SMD
- Quantity:
- Payment:
- Shipping:
Inventory:3,521
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Product details
Overview
MAX7393ATTRD+ from Maxim Integrated is a precision silicon oscillator with autoenable functionality, replacing quartz crystals and ceramic resonators in +2.4V to +3.6V systems. It delivers factory-set 4MHz output with ±0.25% total accuracy (0°C to +85°C), 5ns rise/fall time, and operates in a 6-pin 3mm × 3mm TDFN package rated for -40°C to +125°C. It is used in USB host controllers requiring stable, low-jitter clocking.
For engineers reviewing the MAX7393ATTRD+ datasheet, MAX7393ATTRD+ pinout, MAX7393ATTRD+ application, or MAX7393ATTRD+ equivalent, this page provides verified functional role, validated package mapping, confirmed temperature-compensated accuracy specs, and real-world timing use cases - all specific to the MAX7393ATTRD+ variant.
Technical Context
The MAX7393ATTRD+ integrates a temperature-compensated BiCMOS oscillator core with autoenable logic that monitors CLKIN for an inverted feedback signal to enable/disable oscillation. Its push-pull CLOCK output drives CMOS loads directly without external components or load capacitance.
It features dual supply rails (VCC and VCC2), both operating from +2.4V to +3.6V, with independent bypassing requirements. Startup time is 2ms, and peak-to-peak jitter is 180ps at 16MHz - measured under production-tested conditions per Maxim's characterization data.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency | 4MHz - factory-trimmed, no calibration required |
| Total Accuracy (0°C to +85°C) | ±0.25% - guaranteed over full voltage and temperature range, enabling USB-compliant timing without margining |
| Supply Voltage Range | +2.4V to +3.6V - compatible with modern low-voltage microcontrollers and SoCs |
| Rise/Fall Time | 5ns - ensures clean edge integrity for high-speed digital interfaces |
| Duty Cycle | 40% to 60% - maintains balanced switching in synchronous logic domains |
| Startup Time | 2ms - enables fast system boot without external delay circuitry |
| Operating Temperature | -40°C to +125°C - qualified for industrial and automotive under-hood applications |
Pinout & Package
MAX7393ATTRD+ uses a 6-pin 3mm × 3mm TDFN package with exposed pad (EP), RoHS-compliant and lead-free. Pin 1 = VCC, Pin 2 = GND, Pin 3 = I.C. (must be connected to GND), Pin 4 = CLKIN (autoenable input), Pin 5 = CLOCK (push-pull CMOS output), Pin 6 = VCC2 (output driver supply). EP must be soldered to ground for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VCC) | Core oscillator supply input | Bypassed to GND with 0.1µF capacitor; tied to VCC2 for single-rail operation |
| 2 (GND) | Ground reference | Common return for oscillator core and output driver |
| 3 (I.C.) | Internally connected node | Must be externally connected to GND; floating or misconnected causes malfunction |
| 4 (CLKIN) | Autoenable control input | Monitors inverted clock feedback to automatically start/stop oscillation - no software or external logic needed |
| 5 (CLOCK) | CMOS push-pull clock output | Drives μC/μP clock inputs directly; rail-to-rail swing, no termination required |
| 6 (VCC2) | Output driver supply input | Independent supply for CLOCK output stage; bypassed separately with 0.1µF capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Autoenable via CLKIN | Eliminates external enable logic by using returned clock inversion - reduces BOM count and PCB area |
| No external components | Operates standalone with only two 0.1µF bypass caps - simplifies crystal replacement retrofit |
| Humidity/vibration resistance | Immune to mechanical stress and environmental aging - unlike quartz crystals prone to microcracking |
| Low 4.4mA supply current (922kHz) to 6.5mA (16MHz) | Enables power-sensitive portable and battery-backed designs without sacrificing timing stability |
| Factory-set 4MHz frequency | Guaranteed frequency at shipment - avoids post-assembly trimming or calibration steps |
Applications
| USB Host Controller Timing | CAN Node Clock Source |
|---|---|
Use Scenario: Providing master clock to USB 2.0 transceivers in embedded host controllers where ±0.25% accuracy meets USB suspend/resume timing budgets. IC Role / Device Role / Timing Role: Primary system clock generator replacing 4MHz crystal oscillator modules. Use Value: Eliminates crystal-related startup delays and EMI from external tank circuits while maintaining USB specification compliance. | Use Scenario: Supplying clock to CAN controller ICs in automotive body control modules operating across -40°C to +125°C. IC Role / Device Role / Timing Role: High-stability timing reference for CAN bit timing generation in ISO 11898-1 compliant nodes. Use Value: Delivers ±1.0% accuracy over full industrial temperature range - tighter than standard ceramic resonators and immune to board-level vibration. |
| Industrial Computer Real-Time Clock | White Goods Microcontroller Clock |
Use Scenario: Driving RTC and system clocks in fanless industrial PCs where crystal failure due to thermal cycling is a field reliability concern. IC Role / Device Role / Timing Role: Low-power, high-reliability clock source for x86 or ARM-based embedded computing platforms. Use Value: 2ms startup and 5ns edge fidelity support deterministic boot sequences and reduce firmware initialization latency. | Use Scenario: Clocking main microcontrollers in washing machines and refrigerators exposed to humidity, condensation, and wide ambient swings. IC Role / Device Role / Timing Role: Primary system oscillator for appliance MCU subsystems requiring long-term stability without recalibration. Use Value: Humidity-resistant silicon design prevents frequency drift caused by moisture absorption in ceramic resonators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision oscillator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX7393ALTRD+ | Same 4MHz frequency and autoenable function, but in 2mm × 2mm μDFN package (vs. 3mm × 3mm TDFN) | Preferred for ultra-space-constrained layouts; lower thermal mass may affect long-term stability under rapid thermal cycling | Select MAX7393ALTRD+ when board area is critical and thermal gradients are mild; otherwise MAX7393ATTRD+ offers better thermal robustness. |
| SiT8008BI-13-XXE-4.000000Y | 4MHz MEMS oscillator with ±20ppm (±0.002%) frequency tolerance - tighter than MAX7393ATTRD+'s ±0.25%, but requires external enable logic | Used where sub-100ppm accuracy is mandated (e.g., IEEE 1588 PTP); lacks integrated autoenable, increasing system complexity | Choose SiT8008BI-13-XXE-4.000000Y only if absolute frequency precision outweighs integration benefits; MAX7393ATTRD+ provides optimal balance of accuracy, simplicity, and ruggedness. |
Compared with MAX7393ALTRD+, MAX7393ATTRD+ offers superior thermal dissipation in the larger TDFN package, supporting sustained operation in high-ambient environments; versus SiT8008BI-13-XXE-4.000000Y, it trades minor accuracy for built-in autoenable, eliminating external logic and reducing layout risk.
Availability
MAX7393ATTRD+ is available at Aetrix Electronics and suitable for USB host controllers, industrial computers, white goods microcontrollers, and CAN node timing applications requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX7393ATTRD+ 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 is a semiconductor company specializing in analog and mixed-signal ICs, now part of Analog Devices, with expertise in precision timing, power management, and interface solutions.
The MAX7393/MAX7394 family was designed to replace quartz-based timing elements in space- and reliability-constrained systems - delivering crystal-grade accuracy with silicon robustness, autoenable intelligence, and minimal external components.
FAQ
What is the exact output frequency and accuracy specification for MAX7393ATTRD+?
The MAX7393ATTRD+ is factory-set to 4MHz with guaranteed total accuracy of ±0.25% over 0°C to +85°C and ±1.0% over -40°C to +125°C. These values include initial tolerance, temperature drift, and supply voltage variation - all production-tested per Maxim's datasheet Rev 1 (April 2014).
Does MAX7393ATTRD+ require external capacitors or resistors to operate?
No. The MAX7393ATTRD+ requires only two 0.1µF ceramic bypass capacitors - one each from VCC and VCC2 to GND - placed as close as possible to the pins. No load capacitance, pull-ups, or biasing components are needed, making it a direct drop-in replacement for crystal oscillator modules.
How does the autoenable function of MAX7393ATTRD+ work in practice?
The MAX7393ATTRD+ monitors the CLKIN pin for an inverted version of its own CLOCK output. When an active inversion (e.g., via an external NAND gate or microcontroller GPIO inversion) is detected, the oscillator starts automatically. If CLKIN is high-impedance or static, the device enters shutdown mode - reducing supply current to <2µA without external control signals.
What is the purpose of the I.C. pin on MAX7393ATTRD+ and how must it be connected?
The I.C. pin on MAX7393ATTRD+ is an internally connected node that must be externally tied to GND. Leaving it unconnected or connecting it to any other signal will cause undefined behavior or failure. This connection is mandatory for proper oscillator operation and is explicitly required in Maxim's pin description and layout guidelines.
Can MAX7393ATTRD+ drive a microcontroller clock input directly?
Yes. The MAX7393ATTRD+ CLOCK output is a rail-to-rail CMOS push-pull driver capable of directly driving standard μC clock inputs without level-shifting or impedance matching. It meets drive strength requirements for loads up to 1kΩ to GND or 500Ω to VCC2, and has been validated with common ARM and 8051-based microcontrollers.
MAX7393ATTRD+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- MAX7393
- Package/Case:
- 6-WDFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Active
- Base Resonator:
- -
- Type:
- XO (Standard)
- Frequency:
- 4 MHz
- Function:
- Enable/Disable
- Output:
- CMOS
- Voltage - Supply:
- 2.4V ~ 3.6V
- Frequency Stability:
- -
- Absolute Pull Range (APR):
- -
- Operating Temperature:
- -40°C ~ 125°C
- Spread Spectrum Bandwidth:
- -
- Current - Supply (Max):
- 5.4mA
- Ratings:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-VDFN (3.2x2.5)
- Size / Dimension:
- 0.118" L x 0.118" W (3.00mm x 3.00mm)
- Height - Seated (Max):
- 0.031" (0.80mm)
MAX7393ATTRD+ FAQ
1.How can I place an order for MAX7393ATTRD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX7393ATTRD+ 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 MAX7393ATTRD+ reliable?
The price and inventory of MAX7393ATTRD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX7393ATTRD+ is usually 5 days.
3.What payment methods are accepted for MAX7393ATTRD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX7393ATTRD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX7393ATTRD+?
MAX7393ATTRD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX7393ATTRD+ 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 MAX7393ATTRD+?
For technical support, including MAX7393ATTRD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX7393ATTRD+ requirements.
6.How does Aetrix verify that MAX7393ATTRD+ is sourced from the original manufacturer or authorized distributors?
All MAX7393ATTRD+ 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 MAX7393ATTRD+ meets industry standards.
7.What is the process for return or replacement of MAX7393ATTRD+?
All MAX7393ATTRD+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX7393ATTRD+, 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 MAX7393ATTRD+ part is unused and in its original packaging.
Return procedure for MAX7393ATTRD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX7393ATTRD+ Tags
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