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Product Detailed Parameters
- Description：IC COMPARATOR 2 W/VOLT REF 8DIP
- 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-DIP (0.300", 7.62mm)
- Mounting Type：Through Hole
- Supplier Device Package：8-PDIP
- Grade：-
- Qualification：-
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Overview
The LTC1442IN8#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. Input common mode range extends from the negative supply to within 1.3V of the positive supply. Propagation delay is 8µs with 100mV overdrive. It is housed in an 8-lead PDIP package.
Feature Summary
- Dual comparators with built-in 1.182V reference
- Programmable hysteresis capability
- CMOS outputs with high source current
- Glitch-free switching operation
Applications
- Battery-powered system monitoring
- Threshold detectors
- Window comparators
- Oscillator circuits
Procurement Notes
Verify the specific ordering suffix #PBF indicates lead-free compliance when procuring. Confirm the N8 package designation matches the required through-hole mounting style for your PCB layout. Ensure the 'I' grade temperature range aligns with your operational environment requirements before finalizing orders.
Selection Notes
Select this component when low quiescent current is critical alongside the need for dual comparison channels. The integrated reference eliminates external resistor networks for threshold setting. Consider the 40mA output drive capability if direct interfacing with logic gates or small loads is required without additional buffering stages.
Part Context
This part belongs to the LTC1440/LTC1441/LTC1442 family of micropower comparators. While the LTC1440 offers single-channel performance and the LTC1441 provides dual channels without a reference, the LTC1442 specifically combines dual comparators with the internal bandgap reference and hysteresis control features.
Replacement Considerations
The datasheet identifies MAX921/922/923 as pin-compatible upgrades. Verify functional equivalence regarding reference availability and hysteresis control when substituting these specific Maxim Integrated parts.
