Howdy,
Dave Jones of the eevblog and The Amp Hour just tweeted this special chip of the week:
Special Purpose Chip of The Week: http://www.maxwell.com/products/microelectronics/docs/HSN1000_REV3.PDF. Pin 2 goes low when it detects a NUCLEAR EXPLOSION!
From the datasheet:
Maxwell Technologies’ HSN-1000 radiation-hardened Hybrid Nuclear Event Detector (NED) senses ionizing radiation pulses generated by a nuclear event, such as the detonation of a nuclear weapon
Cheers,
Drew