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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, 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 LTC1445IS#TRPBF is an ultralow power quad comparator with a built-in reference, manufactured by Analog Devices Inc. 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, programmable hysteresis via the HYST pin, and TTL/CMOS compatible outputs that sink and source current. The internal reference voltage is 1.221V ±1%. Propagation delay is typically 12µs at 10mV overdrive. It is available in a 16-lead Plastic SO package.
Feature Summary
- Ultralow quiescent current consumption of less than 8.5µA across operating temperatures
- Built-in precision voltage reference output capable of driving bypass capacitors without oscillation
- Programmable hysteresis functionality using external resistors connected to the HYST pin
- TTL/CMOS compatible output stage capable of sourcing up to 40mA continuously
Applications
- Battery-powered system monitoring
- Threshold detectors
- Window comparators
- Oscillator circuits
Procurement Notes
Verify the specific suffix IS#TRPBF corresponds to the Industrial temperature range (-40°C to 85°C) and Tape & Reel packaging format. Confirm the manufacturer designation matches Analog Devices Inc. specifications for the LTC1445 family before integration into production designs.
Selection Notes
Select this component when low power consumption is critical alongside the need for multiple comparator channels in a single package. The integrated reference eliminates external resistor dividers for threshold setting. Ensure the application requires the specific 1.221V reference value and CMOS output drive capability provided by this model variant.
Part Context
This part belongs to the LTC1443/LTC1444/LTC1445 family of ultralow power quad comparators. While sharing similar core architecture, the LTC1445 specifically offers TTL/CMOS outputs and a 1.221V reference, distinguishing it from the open-drain LTC1444 and ground-referenced LTC1443 variants within the same series.
Replacement Considerations
LTC1445IS#PBF serves as a lead-free PDIP alternative. For pin-compatible upgrades requiring different output types, consider the LTC1444IS#TRPBF (open-drain) or LTC1443IS#TRPBF (ground-referenced). Verify thermal and electrical compatibility before substitution.
