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Product Detailed Parameters
- Description：IC COMPARATOR 2 W/VOLT REF 8SO
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Type：with Voltage Reference
- Number of Elements：2
- 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)：5.7µA
- CMRR, PSRR (Typ)：80dB CMRR, 80dB PSRR
- Propagation Delay (Max)：15µs
- Hysteresis：50mV
- Operating Temperature：-40°C ~ 85°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 LTC1442IS8#PBF is a dual-channel ultralow power analog comparator with an integrated 1.182V reference, manufactured by Analog Devices Inc. It operates on a single supply voltage ranging from 2V to 11V or a dual supply of ±1V to ±5.5V. The device features programmable hysteresis via the HYST pin and CMOS outputs capable of sourcing up to 40mA. Supply current is typically 3.5µA at 5V. Propagation delay is 12µs with 10mV overdrive. Input common mode range extends from V– to V+ – 1.3V. It is housed in an 8-lead SOIC package.
Feature Summary
- Dual-channel architecture with integrated 1.182V bandgap reference
- Programmable hysteresis control via dedicated HYST pin
- CMOS output stage capable of sourcing up to 40mA continuous current
- Glitch-free switching design eliminates cross-conducting currents during state transitions
Applications
- Battery-powered system monitoring
- Threshold detectors
- Window comparators
- Oscillator circuits
Procurement Notes
Verify the specific suffix 'I' indicates the industrial temperature grade (–40°C to +85°C) rather than the commercial grade. Confirm the '#PBF' designation ensures lead-free compliance and RoHS adherence. Ensure the S8 package matches the target PCB footprint dimensions for the 8-lead plastic small outline configuration.
Selection Notes
Select this component when dual independent comparisons are required within a single package. The built-in reference simplifies biasing compared to external resistor dividers. Consider the LTC1441 if hysteresis programming is unnecessary, or the LTC1440 if a separate ground pin for split-supply operation is needed. Verify input common mode limits relative to the positive rail.
Part Context
This part belongs to the LTC1440/LTC1441/LTC1442 family of micropower comparators. While the LTC1440 includes a separate ground pin for split supplies and the LTC1441 lacks hysteresis capability, the LTC1442 provides dual channels with adjustable hysteresis in a standard single-supply configuration. All variants share similar quiescent current characteristics and reference accuracy.
Replacement Considerations
Pin-compatible upgrades include the MAX921, MAX922, and MAX923 series. Cross-reference electrical parameters such as propagation delay and supply current when substituting.
