DESCRIPTION
The LTC ®1440/LTC1441/LTC1442 are ultralow power single and dual comparators with built-in references. The comparators feature less than 3.7µA supply current over temperature (LTC1440), a 1.182V ±1% reference, programmable hysteresis (LTC1440/LTC1442) and TTL/CMOS outputs that sink and source current. The reference output can drive a bypass capacitor of up to 0.01µF without oscillation.

FEATURES
■ Ultralow Quiescent Current: 2.1µA Typ (LTC1440)
■ Reference Output Drives 0.01µF Capacitor
■ Adjustable Hysteresis (LTC1440/LTC1442)
■ Wide Supply Range: Single: 2V to 11V Dual: ±1V to ±5.5V
■ Input Voltage Range Includes the Negative Supply
■ TTL/CMOS Compatible Outputs
■ 12µs Propagation Delay with 10mV Overdrive
■ No Crowbar Current
■ 40mA Continuous Source Current
■ Pin Compatible Upgrades for MAX921/922/923
■ 3mm x 3mm x 0.75mm DFN Package (LTC1440)

APPLICATIONS
■ Battery-Powered System Monitoring
■ Threshold Detectors
■ Window Comparators
■ Oscillator Circuits