MSFIPS - FIPS-140 Level 4+ Security Supervisor Print E-mail


The MSFIPS integrated circuit provides 4 physical tamper switch inputs (3 with polarity control), over/under voltage detection and a temperature sensor. The MSFIPS provides the sensor interfaces needed for the Federal Information Processing Standard (FIPS) 140.


The polarity selectable inputs are intended to interface with a variety of tamper switches, The 1 kHz lowpass filters provide better noise immunity than the single input available on other interfaces. An internal bandgap reference provides an accurate comparison voltage for sensing a overvoltage or undervoltage tampering technique. Temperature variation outside of expected environmental conditions also will trigger an alarm. The MSFIPS operates from 2.4V up to 5.5 VDC. For battery backup, the supply switching is automatically done internally.


The MSFIPS is available in die form and in a 24 pin SSOIC package. Temperature range is –40 to +85 oC.



  • Temperature sensor
  • Bandgap reference for under/over voltage detection
  • Four switch inputs (Three with polarity selection)
  • Automatic battery switchover



  • Cryptography boxes
  • Electronic Medical Storage security
  • Credit processing storage security
  • Point of Sales Terminals
  • Alarm Systems.




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