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Product Detailed Parameters
- Description：IC COMPARATOR 2 GEN PUR 8SO
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Type：General Purpose
- Number of Elements：2
- Output Type：Open-Drain
- Voltage - Supply, Single/Dual (±)：2V ~ 11V, ±1V ~ 5.5V
- Voltage - Input Offset (Max)：10mV @ 5V
- Current - Input Bias (Max)：-
- Current - Output (Typ)：-
- Current - Quiescent (Max)：5.7µA
- CMRR, PSRR (Typ)：80dB CMRR, 80dB PSRR
- Propagation Delay (Max)：12µs
- Hysteresis：-
- Operating Temperature：0°C ~ 70°C
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Mounting Type：Surface Mount
- Supplier Device Package：8-SO
- Grade：-
- Qualification：-
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Overview
The LTC1841CS8#TRPBF is an ultralow power dual comparator housed in an 8-lead plastic SO package. It operates from a single 2V to 11V supply or a dual ±1V to ±5.5V supply. The device features a typical quiescent current of 3.5μA and open-drain outputs capable of sinking greater than 20mA. Input voltage range extends from the negative supply to within 1.3V of the positive supply. Propagation delay is typically 12μs with 10mV overdrive.
Feature Summary
- Ultralow quiescent current consumption for battery-powered applications
- Open-drain output stage capable of high sink currents
- Input common-mode range includes the negative supply rail
- Elimination of cross-conduction current spikes during logic state transitions
Applications
- Battery-powered system monitoring
- Threshold detectors
- Window comparators
- Oscillator circuits
Procurement Notes
Verify the specific suffix TRPBF indicates tape and reel packaging when sourcing this component. Confirm that the CS8 designation corresponds to the commercial temperature range of 0°C to 70°C. Ensure compatibility with standard SO-8 footprints during PCB layout. Cross-reference the manufacturer's ordering information to validate availability and lead times for the reel quantity.
Selection Notes
Select this component for designs requiring minimal static power draw while maintaining functional comparator operations. The wide input voltage range simplifies interface requirements across varying supply conditions. Consider the open-drain output configuration for level shifting or wired-OR logic arrangements. Verify that the propagation delay specifications meet the timing constraints of the target application circuit.
Part Context
This part belongs to the LTC1841/LTC1842/LTC1843 family of micropower dual comparators. While the LTC1841 lacks an internal reference, the CS8 suffix specifically identifies the commercial grade variant packaged in the narrow SO-8 format. This family is designed to provide precision comparison functions with minimal energy expenditure suitable for portable electronics.
Replacement Considerations
LTC1841CS8
FAQ
What is the maximum hysteresis voltage band achievable on the LTC1841?
The LTC1841 does not feature programmable hysteresis; this functionality is available only on the LTC1842 and LTC1843 variants.
Can the inputs be driven below the negative supply rail?
Yes, the inputs can be forced up to 300mV below the negative supply without sustaining damage.
