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Analog Devices Inc./Maxim Integrated MAX7393ALTWB
- Part No.:
- MAX7393ALTWB
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Oscillators
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
MAX7393ALTWB.pdf
- Description:
- OSC XO 16.0000MHZ CMOS SMD
- Quantity:
- Payment:
- Shipping:
Inventory:1,631
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Product details
Overview
MAX7393ALTWB 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 a factory-set 16MHz output with ±0.25% total accuracy (0°C to +85°C) in a 6-pin TDFN package, and is specified for -40°C to +125°C operation - ideal for USB host controllers and industrial microcontroller clocking.
For engineers reviewing the MAX7393ALTWB datasheet, MAX7393ALTWB pinout, MAX7393ALTWB application, or MAX7393ALTWB equivalent, key selection criteria include its autoenable (CLKIN) interface, rail-to-rail push-pull CLOCK output, 5ns rise/fall time, ±1.0% wide-temperature accuracy, and compatibility with space-constrained automotive and white-goods timing designs.
Technical Context
The MAX7393ALTWB implements a temperature-compensated BiCMOS oscillator core with autoenable logic that monitors CLKIN for an inverted feedback signal to autonomously enable/disable oscillation. Its dual-supply architecture separates VCC (core) and VCC2 (output driver), enabling independent voltage optimization and robust rail-to-rail CMOS output drive.
Unlike crystal-based solutions, it requires no external load capacitors or biasing components. Startup time is guaranteed ≤2ms, and output jitter is 180ps peak-to-peak at 16MHz - measured under CL = 10pF, VCC = VCC2 = 3.3V, TA = +25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency | 16MHz - factory-trimmed, no user programming required; matches standard microcontroller clock input requirements. |
| Total Accuracy (0°C to +85°C) | ±0.25% - enables reliable USB 2.0 full-speed (12MHz) and low-speed (1.5MHz) timing without recalibration. |
| Total Accuracy (-40°C to +125°C) | ±1.0% - supports automotive engine control units and industrial PLCs operating across extreme ambient conditions. |
| Supply Voltage Range | +2.4V to +3.6V - compatible with modern 3.3V and 2.5V logic domains; eliminates need for level-shifting circuitry. |
| Output Rise/Fall Time | 5ns - ensures clean edge integrity into 10pF loads, reducing EMI and meeting setup/hold timing margins for high-speed µCs. |
| Startup Time | ≤2ms - enables fast system boot in handheld and appliance applications where rapid clock availability is critical. |
| Duty Cycle | 40%–60% - maintains symmetrical timing for digital logic with balanced high/low propagation delays. |
Pinout & Package
MAX7393ALTWB is housed in a 6-pin, 3mm × 3mm × 0.8mm thin dual flat no-lead (TDFN) package with exposed paddle (EP), RoHS-compliant and lead-free. The EP must be soldered to GND for thermal and electrical stability.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Core supply input; bypass to GND with 0.1µF capacitor; must be connected to VCC2 for proper operation. |
| 2 | GND | Ground reference for both core and output stages; connects directly to PCB ground plane. |
| 3 | I.C. | Internally connected terminal; must be tied to GND - not left floating or connected to other signals. |
| 4 | CLKIN | Autoenable input; senses inverted feedback from downstream logic (e.g., µC clock generator) to autonomously start/stop oscillation. |
| 5 | CLOCK | Rail-to-rail push-pull CMOS output; drives µC clock inputs directly without external termination or load capacitance. |
| 6 | VCC2 | Output driver supply; bypass to GND with 0.1µF capacitor; sets output voltage swing and noise immunity. |
| EP | Exposed Paddle | Thermal and electrical ground pad; must be soldered to GND plane for thermal dissipation and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Autoenable via CLKIN | Eliminates external enable logic by using returned clock inversion - reduces BOM count and PCB footprint in µC-based systems. |
| No external components | Removes requirement for load capacitors, pull-ups, or bias resistors - simplifies layout and improves reliability over crystal solutions. |
| Humidity/vibration resistance | Monolithic silicon construction withstands harsh mechanical environments where quartz crystals risk microfracture or frequency drift. |
| Low-power shutdown | Reduces total supply current to <2µA when CLKIN is inactive - extends battery life in portable and IoT edge devices. |
| Wide-temp performance | Maintains ±1.0% accuracy from -40°C to +125°C - meets AEC-Q100 Grade 1 requirements for under-hood automotive use. |
Applications
| USB Host Controller Timing | Industrial Microcontroller Clocking |
|---|---|
|
Use Scenario: Providing precise 16MHz clock to USB 2.0 full-speed host controller in embedded gateways. IC Role / Device Role / Timing Role: Primary system clock source replacing 16MHz crystal oscillator module. Use Value: ±0.25% accuracy ensures compliance with USB 2.0 timing tolerance (±0.25%) without calibration firmware. |
Use Scenario: Clocking ARM Cortex-M4 microcontrollers in programmable logic controllers (PLCs) deployed in factory automation. IC Role / Device Role / Timing Role: High-stability timing reference for real-time interrupt generation and ADC sampling synchronization. Use Value: ±1.0% accuracy over -40°C to +125°C eliminates thermal recalibration cycles during ambient temperature swings. |
| Automotive Body Control Module | Smart Appliance Real-Time Clock |
|
Use Scenario: Driving CAN FD transceivers and LIN bus controllers in vehicle body electronics modules. IC Role / Device Role / Timing Role: Low-jitter (180ps p-p) 16MHz reference for baud rate generation and protocol timing. Use Value: 5ns edge speed and 40–60% duty cycle ensure stable bit sampling windows for CAN FD data rates up to 5Mbps. |
Use Scenario: Supplying clock to real-time clock (RTC) and display controller in smart refrigerators and washing machines. IC Role / Device Role / Timing Role: Robust, humidity-resistant timing source replacing fragile ceramic resonators in high-moisture environments. Use Value: Monolithic silicon construction prevents frequency shift due to condensation or long-term humidity exposure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision oscillator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SiT8008BI-13-18E-16.000000 | ±20ppm (±0.002%) frequency stability; single-supply (1.8–3.3V); 2.0mm × 1.6mm 4-pin QFN. | Higher accuracy but lacks autoenable; requires external enable control and separate power domain management. | Select when ultra-low jitter (<1ps RMS) and tighter stability are mandatory, and system design accommodates discrete enable logic. |
| DS3231M+ | Integrated TCXO + RTC; ±2ppm accuracy; I²C interface; 3.3V only; 16-pin TSSOP. | Combines timing and calendar functions; not a drop-in replacement - adds complexity and footprint. | Choose only if real-time clock functionality is co-required; not suitable as standalone clock source replacement for MAX7393ALTWB. |
Compared with SiT8008BI-13-18E-16.000000 and DS3231M+, the MAX7393ALTWB uniquely integrates autoenable logic and dual-supply drive in a compact TDFN, enabling simpler, lower-cost clocking in µC-centric designs without sacrificing wide-temperature accuracy or robustness.
Availability
MAX7393ALTWB is available at Aetrix Electronics and suitable for USB host controllers, industrial PLCs, automotive body control modules, and smart appliance timing applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX7393ALTWB 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 high-performance analog, mixed-signal, and timing solutions for industrial, automotive, and computing markets.
The MAX7393 product line was designed specifically to replace quartz-based timing elements with monolithic silicon oscillators offering superior shock/vibration immunity, faster startup, and simplified board-level integration - targeting cost-sensitive, space-constrained embedded systems.
FAQ
What is the factory-set output frequency of the MAX7393ALTWB?
The MAX7393ALTWB is factory-trimmed to deliver a precise 16MHz output frequency. This value is laser-trimmed during production and does not require user configuration or external tuning components. The 16MHz output meets standard microcontroller and USB full-speed timing requirements, and its ±0.25% accuracy over 0°C to +85°C is guaranteed per the datasheet's Electrical Characteristics table.
How does the autoenable function work on the MAX7393ALTWB?
The MAX7393ALTWB uses its CLKIN pin to automatically enable or disable oscillation based on detection of an inverted feedback signal - typically provided by a microcontroller's clock output inversion stage. When an active inversion is sensed between CLOCK and CLKIN, the oscillator starts; absence triggers shutdown. During shutdown, CLOCK is weakly driven to match CLKIN's last state, and supply current drops below 2µA.
What package type and dimensions does the MAX7393ALTWB use?
The MAX7393ALTWB is packaged in a 6-pin thin dual flat no-lead (TDFN) variant with dimensions 3.0mm × 3.0mm × 0.80mm and pkg code T633-2. It features an exposed thermal paddle (EP) that must be soldered to GND. This RoHS-compliant, lead-free package is optimized for high-density PCB layouts and thermal performance in thermally demanding applications.
Can the MAX7393ALTWB operate from a 2.5V supply?
Yes, the MAX7393ALTWB supports supply voltages from +2.4V to +3.6V on both VCC and VCC2 pins, making it fully compatible with 2.5V logic domains. At 2.5V, the CLOCK output maintains rail-to-rail CMOS swing (VOH ≥ VCC2 – 0.3V, VOL ≤ 0.3V), and total supply current remains within specification - verified in the Electrical Characteristics table under "Operating Supply Voltage" and "Total Operating Supply Current".
Is the MAX7393ALTWB pin-compatible with the MAX7394ATTWB?
No - while both share identical pin count and physical package (6-pin TDFN), the MAX7393ALTWB uses pin 4 as CLKIN (autoenable), whereas the MAX7394ATTWB uses pin 4 as ENABLE (manual enable). Swapping them without redesigning the enable interface will result in nonfunctional clock output. Their pinouts are mutually exclusive per the Pin Description table in the datasheet.
MAX7393ALTWB 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:
- 16 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):
- 6.5mA
- 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)
MAX7393ALTWB FAQ
1.How can I place an order for MAX7393ALTWB through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX7393ALTWB 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 MAX7393ALTWB reliable?
The price and inventory of MAX7393ALTWB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX7393ALTWB is usually 5 days.
3.What payment methods are accepted for MAX7393ALTWB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX7393ALTWB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX7393ALTWB?
MAX7393ALTWB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX7393ALTWB 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 MAX7393ALTWB?
For technical support, including MAX7393ALTWB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX7393ALTWB requirements.
6.How does Aetrix verify that MAX7393ALTWB is sourced from the original manufacturer or authorized distributors?
All MAX7393ALTWB 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 MAX7393ALTWB meets industry standards.
7.What is the process for return or replacement of MAX7393ALTWB?
All MAX7393ALTWB units undergo pre-shipment inspection (PSI). If there is an issue with MAX7393ALTWB, 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 MAX7393ALTWB part is unused and in its original packaging.
Return procedure for MAX7393ALTWB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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