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Product Detailed Parameters
- Description：IC COMPARATOR 4 W/VOLT REF 16SO
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：with Voltage Reference
- Number of Elements：4
- Output Type：CMOS, Open-Drain, TTL
- Voltage - Supply, Single/Dual (±)：2V ~ 11V, ±1V ~ 5.5V
- Voltage - Input Offset (Max)：10mV @ 5V
- Current - Input Bias (Max)：-
- Current - Output (Typ)：0.015mA @ 5V
- Current - Quiescent (Max)：8.5µA
- CMRR, PSRR (Typ)：80dB CMRR, 80dB PSRR
- Propagation Delay (Max)：12µs
- Hysteresis：50mV
- Operating Temperature：-40°C ~ 85°C
- Package / Case：16-SOIC (0.154", 3.90mm Width)
- Mounting Type：Surface Mount
- Supplier Device Package：16-SO
- Grade：-
- Qualification：-
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Overview
The LTC1444IS#TRPBF is an ultralow power quad comparator with a built-in reference, housed in a 16-lead plastic SO package. It operates from a single 2V to 11V supply or dual ±1V to ±5.5V supply. The device features less than 8.5µA supply current over temperature and includes programmable hysteresis via the HYST pin. The internal reference voltage is 1.221V ±1%. Outputs are open-drain, capable of sinking current, while the reference output can drive up to 0.01µF without oscillation.
Feature Summary
- Ultralow quiescent current consumption for battery-powered applications
- Built-in precision voltage reference with programmable hysteresis capability
- Open-drain outputs compatible with TTL and CMOS logic levels
- Elimination of crowbar switching currents during state transitions
Applications
- Battery-powered system monitoring
- Threshold detectors
- Window comparators
- Oscillator circuits
Procurement Notes
Verify the specific IS suffix indicates industrial temperature range (-40°C to 85°C) and the #TRPBF suffix denotes tape and reel packaging with lead-free finish. Confirm the 16-lead SO package matches the target PCB footprint. Ensure compatibility with open-drain output requirements as sourcing current is not supported by this variant.
Selection Notes
Select this component when low power consumption is critical alongside precise threshold detection. The integrated reference eliminates external resistor dividers, simplifying design. Verify that open-drain outputs meet interface requirements, as they cannot source current above the negative supply rail. Consider the LTC1443 if TTL-compatible sourcing outputs are required instead.
Part Context
This part belongs to the LTC1443/LTC1444/LTC1445 family of micropower comparators. These devices share similar electrical characteristics but differ in output stage configuration and reference voltage accuracy. The LTC1444 specifically provides open-drain outputs and a 1.221V reference, distinguishing it from the LTC1443's sourcing outputs and 1.182V reference.
Replacement Considerations
LTC1444IN#TRPBF offers the same functionality in a PDIP package. LTC1444CS#TRPBF provides commercial temperature range options. For sourcing outputs, consider the LTC1443 series. Pin-compatible upgrades include MAX924 variants.
