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Product Detailed Parameters
- Description：IC COMPARATOR 1 W/VOLT REF 8MSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：with Voltage Reference
- Number of Elements：1
- 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)：40mA
- Current - Quiescent (Max)：4.4µA
- CMRR, PSRR (Typ)：80dB CMRR, 80dB PSRR
- Propagation Delay (Max)：15µs
- Hysteresis：50mV
- Operating Temperature：0°C ~ 70°C
- Package / Case：8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Mounting Type：Surface Mount
- Supplier Device Package：8-MSOP
- Grade：-
- Qualification：-
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Overview
The LTC1440CMS8#TRPBF is an ultralow power single comparator with a built-in reference, housed in an 8-lead SOIC package. It operates from a single 2V to 11V supply or dual ±1V to ±5.5V supply. The device features a typical supply current of 2.1µA at 5V and 4.0µA over the commercial temperature range (0°C to 70°C). It includes a 1.182V ±1% reference output capable of driving up to 0.01µF without oscillation. Hysteresis is programmable via external resistors connected to the HYST pin. The CMOS output stage can source up to 40mA and sink up to 5mA, ensuring TTL/CMOS compatibility while eliminating crowbar switching currents.
Feature Summary
- Ultralow quiescent current consumption suitable for battery-powered applications
- Integrated 1.182V precision voltage reference with bypass capability
- Programmable hysteresis using external resistors on the HYST pin
- High-current CMOS output stage capable of sourcing 40mA
Applications
- Battery-powered system monitoring
- Micropower threshold detectors
- Window comparators
- Oscillator circuits
Procurement Notes
Verify the specific suffix #TRPBF indicates tape and reel packaging and lead-free compliance. Confirm the 'C' grade corresponds to the 0°C to 70°C operating temperature range. Ensure the S8 package designation matches the required 8-lead plastic small outline footprint for your PCB layout. Cross-reference the manufacturer part number with official Analog Devices documentation to confirm availability status.
Selection Notes
Select this component when low static current is critical alongside the need for a stable internal reference. The LTC1440 is appropriate for designs requiring adjustable hysteresis without external components. Consider the 40mA output drive capability if direct interfacing with logic gates or indicators is needed. Verify that the input common mode range extending to V+ minus 1.3V meets the signal requirements.
Part Context
This part belongs to the LTC1440/LTC1441/LTC1442 family of micropower comparators. While the LTC1441 and LTC1442 offer dual-channel configurations, the LTC1440 provides a single-channel solution. The family shares similar electrical characteristics, including the integrated bandgap reference and glitch-free switching architecture. Pin-compatible upgrades are available for MAX921/922/923 devices.
Replacement Considerations
Pin-compatible alternatives include the MAX921, MAX922, and MAX923 series. Verify functional equivalence regarding supply voltage ranges and output drive capabilities before substitution.
