High Speed Comparator - 903

Maxwell Technologies’ 903 high-speed, low power voltage comparator features differential analog inputs and TTL logic outputs with active internal pull-ups. The 903 can be powered from separate analog and digital power supplies or from a single combined supply voltage. The analog input common-mode range includes the negative rail, allowing ground sensing when powered from a single supply. When powered from +5V, the 903 consumes 18mW. The 903 is equipped with a TTL compatible latch input. The comparator output is latched when the latch input is driven low. Capable of surviving space environments, the 903 is ideal for satellite, spacecraft, and space probe missions.

Maxwell Technologies’ patented RAD-PAK® packaging technology incorporates radiation shielding in the microcircuit package. It eliminates box shielding while providing lifetime in orbit or space mission. In GEO orbit, RAD-PAK® provides greater than 100 krad (Si) radiation dose rate. This product is available with screening up to Class S.


High-speed, low-power voltage comparator
RAD-PAK® radiation-hardened against natural space radiation
Total dose hardness: 100 krad (Si) typical, dependent upon orbit
8ns typ propagation delay
18mW power consumption (typ at +5V)
Separate analog and digital supplies
Flexible analog supply: +5V to +10V or ±5V
Input range includes negative supply rail
TTL compatible outputs
TTL compatible latch inputs