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Analog Devices Inc./Maxim Integrated MAX7393ALTWB-T
- Part No.:
- MAX7393ALTWB-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Oscillators
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
MAX7393ALTWB-T.pdf
- Description:
- OSC XO 16.0000MHZ CMOS SMD
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX7393ALTWB-T 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 TDFN package, and supports automotive-grade operation from −40°C to +125°C. Its rail-to-rail push-pull CLOCK output drives microcontrollers directly without external components.
For engineers reviewing the MAX7393ALTWB-T datasheet, MAX7393ALTWB-T pinout, MAX7393ALTWB-T application, or MAX7393ALTWB-T equivalent, key selection criteria include autoenable (CLKIN) behavior, 16MHz frequency stability across temperature, TDFN-6 package compatibility, and supply current of 6.5mA at 16MHz - critical for USB timing, white goods control, and industrial embedded clocking.
Technical Context
The MAX7393ALTWB-T integrates a temperature-compensated silicon oscillator core with an autoenable circuit that monitors CLKIN for an inverted feedback signal to activate/deactivate the oscillator. It requires no load capacitance or biasing components and operates with dual supplies (VCC/VCC2) tied together at +2.4V to +3.6V.
Its CLOCK output is a CMOS push-pull driver capable of sourcing/sinking 5mA while maintaining rail-to-rail swing, with 5ns rise/fall times and 40–60% duty cycle over full temperature and voltage range. Startup time is 2ms, and peak-to-peak jitter is not specified for 16MHz but follows family trends (e.g., 180ps at 16MHz for MAX7394).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency | 16MHz - factory-trimmed, no user programming required; matches standard microcontroller clock inputs. |
| Total Accuracy (0°C to +85°C) | ±0.25% - guaranteed over commercial temperature range; enables USB 2.0 full-speed timing compliance. |
| Total Accuracy (−40°C to +125°C) | ±1.0% - meets AEC-Q200-relevant stability for automotive and industrial control applications. |
| Supply Voltage Range | +2.4V to +3.6V - compatible with 3.3V logic domains and low-voltage microcontrollers. |
| Operating Current (16MHz) | 6.5mA - measured at VCC = VCC2 = +3.3V; enables power budgeting for battery-backed or energy-conscious designs. |
| Output Rise/Fall Time | 5ns - ensures clean edge integrity for high-speed digital interfaces without added termination. |
| Duty Cycle Range | 40% to 60% - maintains robust setup/hold margins for synchronous logic across voltage and temperature. |
Pinout & Package
MAX7393ALTWB-T uses 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 ground for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VCC | Primary supply input | Bypassed to GND with 0.1µF capacitor; connected internally to VCC2; powers oscillator core. |
| 2 - GND | Ground reference | Common return path for VCC, VCC2, and output stage; must be low-impedance for jitter control. |
| 3 - I.C. | Internally connected terminal | Must be externally tied to GND; floating or misconnected I.C. causes functional failure. |
| 4 - CLKIN | Autoenable control input | Monitors inverted clock feedback to enable/disable oscillator; high-impedance disable state when inactive. |
| 5 - CLOCK | CMOS clock output | Rail-to-rail push-pull output; drives µC/µP clock inputs directly; no external load capacitance needed. |
| 6 - VCC2 | Output driver supply | Bypassed separately to GND with 0.1µF capacitor; same voltage as VCC; powers CLOCK output stage. |
| EP - Exposed Paddle | Thermal & electrical ground | Must be soldered to PCB ground plane; improves thermal dissipation and reduces EMI susceptibility. |
Key Features
| Feature | Design Value |
|---|---|
| Autoenable via CLKIN | Eliminates external enable logic by using returned clock inversion - reduces BOM count and PCB area in µC-based systems. |
| No external components | Removes need for load capacitors, pull-ups, or bias resistors - simplifies crystal replacement and improves layout reliability. |
| Robust environmental operation | Specified for −40°C to +125°C with ±1.0% accuracy - suitable for under-hood automotive modules and industrial motor controls. |
| Low-jitter CMOS output | 5ns edge rates and stable 40–60% duty cycle minimize timing skew in synchronous peripherals like USB PHYs and SPI masters. |
| Humidity/vibration resistance | Silicon MEMS-like construction avoids crystal fragility - ideal for handheld, appliance, and transportation equipment. |
Applications
| USB Full-Speed Timing | Industrial Motor Control |
|---|---|
|
Use Scenario: Providing precise 16MHz clock to USB 2.0 transceivers in embedded host controllers. IC Role / Device Role / Timing Role: Primary system clock source replacing 16MHz crystal oscillator module. Use Value: ±0.25% accuracy at 0°C to +85°C ensures USB packet timing compliance without margin padding. |
Use Scenario: Clocking real-time PWM generators and position encoder interfaces in variable-frequency drives. IC Role / Device Role / Timing Role: Stable timing reference for deterministic interrupt scheduling and ADC sampling. Use Value: ±1.0% accuracy over −40°C to +125°C maintains loop timing integrity in wide-temperature motor enclosures. |
| Smart Appliance MCU Clocking | Automotive Body Control Module |
|
Use Scenario: Driving main microcontroller clock in washing machine control boards exposed to humidity and vibration. IC Role / Device Role / Timing Role: Drop-in crystal replacement with enhanced mechanical reliability. Use Value: Silicon oscillator construction resists board flexure and condensation better than quartz resonators. |
Use Scenario: Supplying clock to LIN or CAN subsystem MCUs in dashboard or lighting control units. IC Role / Device Role / Timing Role: Secondary timing source for non-critical communication peripherals. Use Value: Autoenable (CLKIN) allows synchronized startup with main ECU clock, reducing system wake-up latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision oscillator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX7393ALTTP-T | Factory-set to 8MHz; identical TDFN-6 package, pinout, and autoenable architecture. | Used where lower clock frequency reduces EMI or matches legacy peripheral timing requirements. | Select when 8MHz suffices for target µC clock domain and system timing budget allows halved frequency. |
| SiT8008AI-12-XXE-16.000000 | 16MHz, ±20ppm (±0.002%) accuracy, 3.2mm × 2.5mm SMD package; no autoenable function. | Requires external enable logic or always-on operation; superior stability but higher cost and larger footprint. | Choose when ultra-high stability (<±0.002%) is mandatory and autoenable is unnecessary or implemented externally. |
Compared with MAX7393ALTWB-T, MAX7393ALTTP-T offers identical interface and reliability at half the frequency, while SiT8008AI-12-XXE-16.000000 trades autoenable capability for significantly tighter frequency tolerance - making it suitable only where precision outweighs functional integration needs.
Availability
MAX7393ALTWB-T is available at Aetrix Electronics and suitable for USB timing, industrial motor control, and smart appliance applications requiring stable component supply, long-term lifecycle support, and automotive-grade temperature performance.
Supply support for MAX7393ALTWB-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 high-performance analog and mixed-signal ICs for industrial, automotive, communications, and computing markets.
The MAX7393 product line delivers factory-programmed silicon oscillators with autoenable or enable control, targeting space-constrained, high-reliability systems needing crystal replacement without design rework.
FAQ
What is the factory-set frequency of the MAX7393ALTWB-T?
The MAX7393ALTWB-T is factory-trimmed to 16MHz. This frequency is laser-programmed during manufacturing and cannot be adjusted in-circuit. The "WB" suffix in the part number explicitly denotes the 16MHz variant per Maxim's Selector Guide, and it is verified across all production lots for ±0.25% accuracy from 0°C to +85°C.
Does the MAX7393ALTWB-T require external load capacitors like quartz crystals?
No, the MAX7393ALTWB-T does not require external load capacitors. As a fully integrated silicon oscillator, it contains internal compensation and drive circuitry. Removing all crystal-related biasing components (e.g., 12–22pF caps, series resistors) is required when retrofitting - confirmed in the Applications Information section of the datasheet.
How does the autoenable (CLKIN) function work on the MAX7393ALTWB-T?
The MAX7393ALTWB-T monitors CLKIN for an inverted version of its own CLOCK output. When active inversion is detected (e.g., via external NAND gate), the oscillator enables; absence of inversion places it in shutdown, drawing <2µA. This eliminates external enable logic and synchronizes startup with system clock tree activation.
What is the recommended PCB layout for the exposed paddle (EP) on the MAX7393ALTWB-T?
The exposed paddle (EP) of the MAX7393ALTWB-T must be soldered to a solid PCB ground plane using ≥4 thermal vias (0.3mm diameter) placed within the paddle area. Per Maxim's package drawings (T633-2), EP is electrically and thermally connected to GND - omitting this connection degrades thermal performance and may increase jitter or cause instability.
Can the MAX7393ALTWB-T operate from a single 3.3V supply?
Yes, the MAX7393ALTWB-T operates from a single 3.3V supply. VCC and VCC2 must be connected to the same 3.3V rail, each bypassed independently with 0.1µF ceramic capacitors to GND. This configuration satisfies the +2.4V to +3.6V specification and ensures proper core and output driver operation per the Power-Supply Considerations section.
MAX7393ALTWB-T 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-T FAQ
1.How can I place an order for MAX7393ALTWB-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX7393ALTWB-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 MAX7393ALTWB-T reliable?
The price and inventory of MAX7393ALTWB-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX7393ALTWB-T is usually 5 days.
3.What payment methods are accepted for MAX7393ALTWB-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX7393ALTWB-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX7393ALTWB-T?
MAX7393ALTWB-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX7393ALTWB-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 MAX7393ALTWB-T?
For technical support, including MAX7393ALTWB-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX7393ALTWB-T requirements.
6.How does Aetrix verify that MAX7393ALTWB-T is sourced from the original manufacturer or authorized distributors?
All MAX7393ALTWB-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 MAX7393ALTWB-T meets industry standards.
7.What is the process for return or replacement of MAX7393ALTWB-T?
All MAX7393ALTWB-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX7393ALTWB-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 MAX7393ALTWB-T part is unused and in its original packaging.
Return procedure for MAX7393ALTWB-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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