LTC1443 - Ultralow Power Quad Comparators with Reference
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.
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.
Features
Typical Application  | Applications
Packaging  |
| Part Number | Package | Temp | Price(1-99) | Price (1k)* |
|---|---|---|---|---|
| LTC1443CDHD#PBF | 5x4 DFN-16 | C | $3.21 | $2.25 |
| LTC1443CDHD#TRPBF | 5x4 DFN-16 | C | $2.31 | |
| LTC1443CN#PBF | N-16 | C | $3.00 | $2.45 |
| LTC1443CS#PBF | SO-16 | C | $3.00 | $2.45 |
| LTC1443CS#TRPBF | SO-16 | C | $2.51 | |
| LTC1443IDHD#PBF | 5x4 DFN-16 | I | $3.86 | $2.70 |
| LTC1443IDHD#TRPBF | 5x4 DFN-16 | I | $2.76 | |
| LTC1443IN#PBF | N-16 | I | $3.50 | $2.95 |
| LTC1443IS#PBF | SO-16 | I | $3.50 | $2.95 |
| LTC1443IS#TRPBF | SO-16 | I | $3.01 |
