LTC1444
PRODUCTIONUltralow Power Quad Comparators with Reference
- Part Models
- 10
- 1ku List Price
- Starting From $2.85
Part Details
- Ultralow Quiescent Current: 8.5μA Max
- Reference Output Drives 0.01μF Capacitor
- Adjustable Hysteresis (LTC1444/LTC1445)
- Wide Supply Range
Single: 2V to 11V
Dual: ±1V to ±5.5V - Input Voltage Range Includes the Negative Supply
- TTL/CMOS Compatible Outputs
- Propagation Delay: 12μs (Typ) (10mV Overdrive)
- No Crowbar Current
- 40mA Continuous Source Current
- Pin Compatible Upgrades for MAX924 (LTC1443)
- Low Profile (5mm × 4mm × 0.8mm) DFN Package
The LTC1443/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.
The comparators operate from a single 2V to 11V supply or a dual ±1V to ±5.5V supply (LTC1443). Comparator hysteresis is easily programmable using two resistors and the HYST pin (LTC1444/LTC1445). Each comparator’s input operates from the negative supply to within 1.3V of the positive supply. The LTC1443/LTC1445 comparator output stage can continuously source up to 40mA. By eliminating the cross-conducting current that normally happens when the comparator changes logic states, power supply glitches are eliminated.
The LTC1443/LTC1444/LTC1445 are available in the 16-pin SO, PDIP and DFN packages.
Applications
- Battery-Powered System Monitoring
- Threshold Detectors
- Window Comparators
- Oscillator Circuits
Documentation
Data Sheet 1
Reliability Data 1
Design Note 2
Product Selector Card 1
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 Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC1444CDHD#PBF | 16-Lead DFN (5mm x 4mm w/ EP) | ||
| LTC1444CDHD#TRPBF | 16-Lead DFN (5mm x 4mm w/ EP) | ||
| LTC1444CN#PBF | 16-Lead PDIP (Narrow 0.30 Inch) | ||
| LTC1444CS#PBF | 16-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1444CS#TRPBF | 16-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1444IDHD#PBF | 16-Lead DFN (5mm x 4mm w/ EP) | ||
| LTC1444IDHD#TRPBF | 16-Lead DFN (5mm x 4mm w/ EP) | ||
| LTC1444IN#PBF | 16-Lead PDIP (Narrow 0.30 Inch) | ||
| LTC1444IS#PBF | 16-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1444IS#TRPBF | 16-Lead SOIC (Narrow 0.15 Inch) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Oct 11, 2022 - 22_0241 Epoxy Change from Henkel 8290 to 8290A for PDIP Package |
||
| LTC1444CN#PBF | PRODUCTION | |
| LTC1444IN#PBF | PRODUCTION | |
|
Aug 6, 2022 - 22_0172 Laser Top Mark Conversion for PDIP Packages Assembled in ADPG [PNG] |
||
| LTC1444CN#PBF | PRODUCTION | |
| LTC1444IN#PBF | PRODUCTION | |
|
Oct 24, 2024 - 24_0246 Migrating Bottom Trace Code Marking to Top Side Laser Marking for SOIC_N Package |
||
| LTC1444CS#PBF | PRODUCTION | |
| LTC1444CS#TRPBF | PRODUCTION | |
| LTC1444IS#PBF | PRODUCTION | |
| LTC1444IS#TRPBF | PRODUCTION | |
|
Oct 12, 2022 - 22_0252 Epoxy Change from Henkel 8290 to 8290A for 16-Lead SOIC Package |
||
| LTC1444CS#PBF | PRODUCTION | |
| LTC1444CS#TRPBF | PRODUCTION | |
| LTC1444IS#PBF | PRODUCTION | |
| LTC1444IS#TRPBF | PRODUCTION | |
|
Aug 6, 2022 - 22_0173 Laser Top Mark Conversion for SOICN14 and SOICN16 Packages Assembled on ADPG [PNG] |
||
| LTC1444CS#PBF | PRODUCTION | |
| LTC1444CS#TRPBF | PRODUCTION | |
| LTC1444IS#PBF | PRODUCTION | |
| LTC1444IS#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LTC1444
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.