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Maxim > Products > [Supervisors, Voltage Monitors, Sequencers]  [Timekeeping, Timers, and Counters] 
MAX7387, MAX7388
System Monitoring Oscillator with Watchdog and Power Fail


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 608kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX7387/MAX7388 replace ceramic resonators, crystals, and supervisory functions for microcontrollers in 3.3V and 5V applications.

The MAX7387/MAX7388 provide a clock source together with integrated reset, watchdog, and power-fail functions. The watchdog timer is pin programmable and provides watchdog timeout values in the 16ms to 2048ms range. The power-fail output provides early warning of power failure. The power-fail threshold on the MAX7388 is internally set. The MAX7387 also provides a separate watchdog output that is used as a status indicator or to control safety-critical system elements.

The MAX7387/MAX7388 clock outputs are factory programmed to a frequency in the 1MHz to 16MHz range. Four standard frequencies are available. Other frequencies are available upon request. The maximum operating supply current is 5.5mA (max) with a clock frequency of 12MHz.

Unlike typical crystal and ceramic resonator oscillator circuits, the MAX7387/MAX7388 are resistant to EMI, vibration, and operate reliably at high temperatures. The high-output drive current and absence of high-impedance nodes make the oscillator invulnerable to dirty or humid operating conditions.

The MAX7387/MAX7388 are available in 10-pin and 8-pin µMAX® packages. The MAX7387/MAX7388 standard operating temperature range is from -40°C to +125°C.

Key Features   Applications/Uses
  		• Robust Microcontroller Clock and Supervisor in a Single Package
  		• Integrated Reset, Watchdog, and Power-Fail Functions
  		• Pin-Programmable Watchdog Timeout
  		• +2.7V to +5.5V Operation
  		• Factory-Trimmed Oscillator
  		• Reset Valid Down to 1.1V Supply Voltage
  		• ±10mA Clock-Output Drive Current
  		• ±4% Total Accuracy for -40°C to +125°C
  		• ±2.75% Total Accuracy for 0°C to +85°C
  		• -40°C to +125°C Temperature Range
  		• 8- and 10-Pin µMAX Surface-Mount Package
  		• 5.5mA Operating Current (12MHz)
  		• 1MHz to 16MHz Factory Preset Frequency

    		  
  		• Appliances and Controls
  		• Automotive
  		• Handheld Products
  		• Microcontroller Systems
  		• Portable Equipment
  		• White Goods

    Diagram
    MAX7387, MAX7388: Typical Application Circuit
    Typical Application Circuit

    Application Notes
  		• Application Note 3582: Replacing Crystals and Ceramic Resonators with Silicon Oscillators - MAX7387, MAX7388

    Design Guides
  		• Microprocessor Supervisory (PDF)
  		• System Timing & Control (PDF)

    Reliability Reports
  		• Show FIT data for:
  		• Request Reliability Report for:

    Software/Models
    none

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-36 of 36

    MAX7387 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX7387CSAC    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX7387CMAC    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX7387CMVB-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX7387CMWB-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX7387CSRD    
    		Active µMAX;10 pin;15.4 mm²
    Outline Drawing: 21-0061 (PDF)
    Land Pattern: 90-0330 (PDF)
    Use pkgcode/variation: U10-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX7387CSTP    
    		Active µMAX;10 pin;15.4 mm²
    Outline Drawing: 21-0061 (PDF)
    Land Pattern: 90-0330 (PDF)
    Use pkgcode/variation: U10-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX7387CSVB    
    		Active µMAX;10 pin;15.4 mm²
    Outline Drawing: 21-0061 (PDF)
    Land Pattern: 90-0330 (PDF)
    Use pkgcode/variation: U10-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX7387CSWB    
    		Active µMAX;10 pin;15.4 mm²
    Outline Drawing: 21-0061 (PDF)
    Land Pattern: 90-0330 (PDF)
    Use pkgcode/variation: U10-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX7387CMWB    
    		Active µMAX;10 pin;15.4 mm²
    Outline Drawing: 21-0061 (PDF)
    Land Pattern: 90-0330 (PDF)
    Use pkgcode/variation: U10-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX7387CSRD-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX7387CSTP-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX7387CSVB-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX7387CSWB-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX7387CMRD-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX7387CMTP-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX7387CMRD    
    		Active µMAX;10 pin;15.4 mm²
    Outline Drawing: 21-0061 (PDF)
    Land Pattern: 90-0330 (PDF)
    Use pkgcode/variation: U10-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX7387CMTP    
    		Active µMAX;10 pin;15.4 mm²
    Outline Drawing: 21-0061 (PDF)
    Land Pattern: 90-0330 (PDF)
    Use pkgcode/variation: U10-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX7387CMVB    
    		Active µMAX;10 pin;15.4 mm²
    Outline Drawing: 21-0061 (PDF)
    Land Pattern: 90-0330 (PDF)
    Use pkgcode/variation: U10-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX7388 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX7388CMAC    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX7388CSAC    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX7388CMRD    
    		Active µMAX;8 pin;16.2 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX7388CMRD-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX7388CMTP    
    		Active µMAX;8 pin;16.2 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX7388CMTP-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX7388CMVB    
    		Active µMAX;8 pin;16.2 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX7388CMVB-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX7388CMWB    
    		Active µMAX;8 pin;16.2 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX7388CMWB-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX7388CSRD    
    		Active µMAX;8 pin;16.2 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX7388CSRD-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX7388CSTP    
    		Active µMAX;8 pin;16.2 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX7388CSTP-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX7388CSVB    
    		Active µMAX;8 pin;16.2 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX7388CSVB-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX7388CSWB    
    		Active µMAX;8 pin;16.2 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX7388CSWB-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet

    More Information
  		• New Product Press Release 2006-02-17 
  		• Product Ad: Download

    Related Products
    MAX7391 Speed-Switching Clock Generator with Power Fail
    MAX7387, MAX7388 System Monitoring Oscillator with Watchdog and Power Fail
    MAX7389, MAX7390 Microcontroller Clock Generator with Watchdog

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     Description 
     Key Features 
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     Diagram 

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    Document Ref.: 19-3896; Rev 1; 2006-02-14
    This page last modified: 2006-08-02


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