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Analog Devices Inc./Maxim Integrated MAX7394ATTZY+
- Part No.:
- MAX7394ATTZY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Oscillators
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
MAX7394ATTZY+.pdf
- Description:
- MEMS OSC XO 48.0000MHZ CMOS SMD
- Quantity:
- Payment:
- Shipping:
Inventory:7,160
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Product details
Overview
MAX7394ATTZY+ from Maxim Integrated is a precision silicon oscillator with enable control, replacing quartz crystals and ceramic resonators in +2.4V to +3.6V systems. It delivers factory-set 48MHz output with ±0.25% total accuracy (0°C to +85°C, TDFN package), 5ns rise/fall time, and 40–60% duty cycle - ideal for USB timing and microcontroller clocking.
For engineers reviewing the MAX7394ATTZY+ datasheet, MAX7394ATTZY+ pinout, MAX7394ATTZY+ application, or MAX7394ATTZY+ equivalent, key selection criteria include its enable-controlled startup, rail-to-rail push-pull CLOCK output, low 12mA operating current at 48MHz, and -40°C to +125°C industrial temperature rating.
Technical Context
The MAX7394ATTZY+ integrates a temperature-compensated BiCMOS oscillator core with independent VCC and VCC2 supplies, enabling optimized noise isolation between oscillator and output driver. Its ENABLE input provides deterministic shutdown with <2µA supply current and weak-high CLOCK output state.
Unlike the autoenable MAX7393, the MAX7394ATTZY+ requires explicit logic-level control on ENABLE (high = active, low = shutdown) and does not monitor CLKIN. Its 48MHz output is production-tested at +25°C and +85°C per frequency accuracy specifications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency | 48MHz - factory-trimmed, no external load capacitors required |
| Total Accuracy (0°C to +85°C) | ±0.25% - guaranteed for TDFN package, enables USB 2.0 timing compliance |
| Supply Voltage Range | +2.4V to +3.6V - matches modern low-voltage microcontrollers and SoCs |
| Operating Current (48MHz) | 12mA - measured at VCC = VCC2 = +3.3V, CL = 10pF |
| Rise/Fall Time | 5ns - ensures clean edge integrity into CMOS clock inputs without termination |
| Duty Cycle | 40% to 60% - maintains timing margin for asymmetric clocked logic |
| Startup Time | 2ms - time for output to stabilize after ENABLE goes high |
| Output Jitter (48MHz) | 140ps peak-to-peak - supports high-speed digital interfaces requiring low phase noise |
Pinout & Package
MAX7394ATTZY+ 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 connect to GND), Pin 4 = ENABLE, Pin 5 = CLOCK, Pin 6 = VCC2. EP must be soldered to ground for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VCC | Oscillator Core Supply | Bypass to GND with 0.1µF capacitor; connects internally to VCC2 for single-supply operation |
| 2 - GND | Ground Reference | Common return for oscillator core, output driver, and ENABLE logic |
| 3 - I.C. | Internally Connected | Mandatory GND connection; floating or misconnected I.C. causes functional failure |
| 4 - ENABLE | Active-High Enable Control | Logic high enables oscillator; logic low disables oscillator and reduces ICC to <2µA |
| 5 - CLOCK | Push-Pull CMOS Output | Rail-to-rail output capable of driving 1kΩ to GND or 500Ω to VCC2 within 300mV of rails |
| 6 - VCC2 | Output Driver Supply | Independent supply for CLOCK output stage; bypass to GND with 0.1µF capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Enable-Controlled Oscillator | EN input allows precise power-gating of clock generation, reducing system standby current |
| No External Components | Eliminates crystal load caps, feedback resistors, and ESD protection networks - simplifies layout and BOM |
| Robust Environmental Operation | Specified for -40°C to +125°C and resistant to humidity/vibration - suitable for automotive under-hood and industrial controls |
| Low-Jitter 48MHz Output | 140ps peak-to-peak jitter at 48MHz meets setup/hold timing budgets for high-speed peripherals |
| Independent Output Supply (VCC2) | Allows CLOCK output to track host processor supply voltage, ensuring logic-level compatibility |
Applications
| USB 2.0 Host Controller Timing | Industrial PLC Real-Time Clock |
|---|---|
Use Scenario: Providing master clock to USB 2.0 transceivers or PHYs in embedded host controllers. IC Role / Device Role / Timing Role: Primary 48MHz reference oscillator replacing crystal-based solutions with tighter accuracy and faster startup. Use Value: ±0.25% accuracy over 0°C to +85°C ensures USB packet timing compliance; 2ms startup enables rapid resume-from-suspend. | Use Scenario: Synchronizing real-time operations in programmable logic controllers deployed in factory automation cabinets. IC Role / Device Role / Timing Role: High-stability clock source for microcontroller instruction execution and I/O sampling. Use Value: -40°C to +125°C rating and ±1.0% accuracy over full range maintain deterministic timing across ambient extremes. |
| White Goods Microcontroller Clock | Automotive Body Control Module |
Use Scenario: Driving main MCU clock in washing machines, refrigerators, and HVAC systems. IC Role / Device Role / Timing Role: Low-power, vibration-resistant timing source replacing fragile ceramic resonators. Use Value: 12mA at 48MHz and <2µA shutdown current extend energy efficiency; TDFN package withstands mechanical stress during appliance operation. | Use Scenario: Supplying clock to CAN controller and sensor interface ICs in body electronics modules. IC Role / Device Role / Timing Role: Precision oscillator meeting AEC-Q200 environmental requirements for non-safety-critical timing. Use Value: Humidity/vibration resistance and ±1.0% accuracy over -40°C to +125°C ensure reliable CAN bus synchronization in harsh under-dash environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision oscillator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SiT8008BI-73-33E-48.000000 | ±20ppm (±0.002%) frequency stability, 3.2mm × 2.5mm 4-pin SMD, no enable pin | Higher accuracy but lacks ENABLE control; requires external gating logic for power management | Select when ultra-low jitter (<100ps) and long-term stability outweigh need for integrated enable functionality |
| DS3231M+ | Integrated TCXO + RTC; 32.768kHz only; I²C interface; ±2ppm accuracy | Functionally distinct - real-time clock with calendar, not a general-purpose MHz oscillator | Select only for timekeeping applications; not a functional substitute for MAX7394ATTZY+'s 48MHz clock generation |
Compared with SiT8008BI-73-33E-48.000000 and DS3231M+, the MAX7394ATTZY+ uniquely combines factory-set 48MHz output, integrated ENABLE control, ±0.25% accuracy in TDFN, and rail-to-rail push-pull drive - making it optimal for space-constrained, power-aware microcontroller clocking where deterministic startup and shutdown are required.
Availability
MAX7394ATTZY+ is available at Aetrix Electronics and suitable for USB 2.0 timing, industrial PLC synchronization, and white goods microcontroller clocking requiring stable component supply across extended temperature ranges.
Supply support for MAX7394ATTZY+ 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 for power, sensing, connectivity, and timing applications.
The MAX7393/MAX7394 product line delivers precision silicon oscillators as drop-in replacements for crystals and resonators - designed specifically for systems needing robust, small-footprint, enable-controllable clock sources in industrial and consumer environments.
FAQ
What is the function of the I.C. pin on the MAX7394ATTZY+?
The I.C. (Internally Connected) pin on the MAX7394ATTZY+ must be connected directly to GND. It is not an input or output but a dedicated internal node requiring a low-impedance ground connection for proper oscillator operation. Leaving I.C. unconnected or routing it to any other signal violates the absolute maximum ratings and will cause functional failure or instability in the MAX7394ATTZY+.
Does the MAX7394ATTZY+ require external load capacitance like a crystal oscillator?
No, the MAX7394ATTZY+ does not require external load capacitance. As a fully integrated silicon oscillator, it contains all necessary compensation and tuning circuitry internally. Unlike quartz crystals or ceramic resonators, the MAX7394ATTZY+ operates with zero external components - eliminating load capacitors, feedback resistors, and matching networks required by traditional oscillator circuits.
What happens to the CLOCK output when ENABLE is driven low on the MAX7394ATTZY+?
When ENABLE is driven low on the MAX7394ATTZY+, the oscillator core shuts down and the CLOCK output enters a weak-high state, pulled through an internal 10kΩ resistor to VCC2. This behavior prevents floating nodes and ensures predictable logic levels during system sleep modes. Total supply current drops below 2µA, preserving power while maintaining defined output voltage.
Can the MAX7394ATTZY+ operate from separate VCC and VCC2 supplies?
Yes, the MAX7394ATTZY+ supports independent VCC (oscillator core) and VCC2 (output driver) supplies, though they are typically tied together. Separating them allows the CLOCK output to track a different voltage domain - for example, interfacing with a 1.8V microcontroller while powering the oscillator core from 3.3V. Both supplies must remain within +2.4V to +3.6V, and each requires its own 0.1µF bypass capacitor to GND.
Is the MAX7394ATTZY+ pin-compatible with the MAX7393ATTZY+?
No, the MAX7394ATTZY+ is not pin-compatible with the MAX7393ATTZY+. While both use the same 6-pin TDFN package, Pin 4 is ENABLE on the MAX7394ATTZY+ but CLKIN on the MAX7393ATTZY+. Swapping them without board revision will result in incorrect enable behavior or failure to start. The MAX7394ATTZY+ requires explicit ENABLE control, whereas the MAX7393ATTZY+ relies on autoenable via CLKIN inversion detection.
MAX7394ATTZY+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- MAX7394
- Package/Case:
- 6-WDFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Active
- Base Resonator:
- MEMS
- Type:
- XO (Standard)
- Frequency:
- 48 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):
- 12mA
- 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)
MAX7394ATTZY+ FAQ
1.How can I place an order for MAX7394ATTZY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX7394ATTZY+ 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 MAX7394ATTZY+ reliable?
The price and inventory of MAX7394ATTZY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX7394ATTZY+ is usually 5 days.
3.What payment methods are accepted for MAX7394ATTZY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX7394ATTZY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX7394ATTZY+?
MAX7394ATTZY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX7394ATTZY+ 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 MAX7394ATTZY+?
For technical support, including MAX7394ATTZY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX7394ATTZY+ requirements.
6.How does Aetrix verify that MAX7394ATTZY+ is sourced from the original manufacturer or authorized distributors?
All MAX7394ATTZY+ 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 MAX7394ATTZY+ meets industry standards.
7.What is the process for return or replacement of MAX7394ATTZY+?
All MAX7394ATTZY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX7394ATTZY+, 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 MAX7394ATTZY+ part is unused and in its original packaging.
Return procedure for MAX7394ATTZY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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