Features and Benefits
- Ultralow Quiescent Current: 3.5µA Typ
- Reference Output Drives 0.01µF Capacitor
- Adjustable Hysteresis
- 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 MAX923/933
- 8-Pin DIP and SO-8 Package
The LTC1442 is an ultralow power dual comparator with a built-in voltage reference. The comparators feature less than 5.7µA supply current over temperature, a 1.182V ±1% reference, programmable hysteresis and TTL/CMOS outputs that sink and source current. The voltage reference output can drive a bypass capacitor of up to 0.01µF without oscillation.
The comparators operate from a single 2V to 11V supply or a dual ±1V to ±5.5V supply. Comparator hysteresis is easily programmed by using two resistors and the HYST pin. Each comparator’s input operates from the negative supply to within 1.3V of the positive supply. The comparator output stage can continuously source up to 40mA. By eliminating the cross-conducting current that normally happens when the comparator changes logic states, the power supply glitches are eliminated.
The LTC1442 is available in an 8-pin PDIP and SO package.
- Battery-Powered System Monitoring
- Threshold Detectors
- Window Comparators
- Oscillator Circuits
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Documentation & Resources
R312 Reliability Data3/23/2018
DN160 - Dual PowerPath™ Controller Simplifi es Power Management5/29/2014
DN114 - The LTC1267 Dual Switching Regulator Controller Operates from High Input Voltages8/21/2007
Design Note 137: New Comparators Feature Micropower Operation Under All Conditions9/9/1996
Design Note 123: Ultralow Power Comparators Include Reference1/1/1996
High Speed Comparators1/27/2015
Low Voltage PowerPath Driver Switches from a 3.3V or 5V Supply to Battery Backup6/1/1999 LT Journal
Tools & Simulations
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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
|Part Number||Material Declaration||Reliability Data||Pin/Package Drawing||CAD Symbols, Footprints & 3D Models|
|LTC1442CN8#PBF||Material Declaration||Reliability Data||8-Lead PDIP (Narrow 0.3 Inch)|
|LTC1442CS8#PBF||Material Declaration||Reliability Data||8-Lead SOIC (Narrow 0.15 Inch)|
|LTC1442CS8#TRPBF||Material Declaration||Reliability Data||8-Lead SOIC (Narrow 0.15 Inch)|
|LTC1442DICE||Material Declaration||Reliability Data||CHIPS OR DIE|
|LTC1442IN8#PBF||Material Declaration||Reliability Data||8-Lead PDIP (Narrow 0.3 Inch)|
|LTC1442IS8#PBF||Material Declaration||Reliability Data||8-Lead SOIC (Narrow 0.15 Inch)|
|LTC1442IS8#TRPBF||Material Declaration||Reliability Data||8-Lead SOIC (Narrow 0.15 Inch)|
|Wafer Fabrication Data||R312 Reliability Data|
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