DESCRIPTION
The LTC®1443/LTC1444/LTC1445 are ultralow power quad comparators with a built-in reference. The comparators feature less than 8.5µA supply current over temperature, an internal reference (1.182V ±1% for LTC1443 or 1.221V ±1% for LTC1444/LTC1445), programmable hysteresis (LTC1444/LTC1445) and TTL/CMOS output (LTC1443/ LTC1445) that sinks and sources current (open-drain output for LTC1444). The reference output can drive a bypass capacitor of up to 0.01µF without oscillation.

FEATURES
■ Ultralow Quiescent Current: 8.5µA Max
■ Wide Supply Range Single: 2V to 11V Dual: ±1V to ±5.5V
■ Input Voltage Range Includes the Negative Supply
■ Reference Output Drives 0.01µF Capacitor
■ Adjustable Hysteresis (LTC1444/LTC1445)
■ TTL/CMOS Compatible Outputs
■ Propagation Delay: 12µs (Typ) (10mV Overdrive)
■ No Crowbar Current
■ 40mA Continuous Source Current
■ Pin Compatible Upgrades for MAX924 (LTC1443)

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