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Product Detailed Parameters
- Description：IC COMPARATOR 2 GEN PUR 8SOIC
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：General Purpose
- Number of Elements：2
- Output Type：CMOS, Push-Pull, TTL
- Voltage - Supply, Single/Dual (±)：2.7V ~ 5.5V
- Voltage - Input Offset (Max)：2mV @ 5V
- Current - Input Bias (Max)：0.32µA @ 5V
- Current - Output (Typ)：-
- Current - Quiescent (Max)：300µA
- CMRR, PSRR (Typ)：81.94dB CMRR, 81.94dB PSRR
- Propagation Delay (Max)：40ns
- Hysteresis：1.5mV
- Operating Temperature：-40°C ~ 85°C
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Mounting Type：Surface Mount
- Supplier Device Package：8-SOIC
- Grade：-
- Qualification：-
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Overview
The MAX9142ESA+T is a dual high-speed comparator optimized for 3V and 5V single-supply systems. It features rail-to-rail inputs, low power consumption of 150µA per comparator at 3V, and a fast propagation delay of 40ns with 10mV overdrive. The device includes internal hysteresis for clean switching and outputs that swing within 300mV of the supply rails without external pullups. It operates from 2.7V to 5.5V, supports continuous short-circuit conditions, and is housed in an 8-pin SO package.
Feature Summary
- Dual-channel architecture with rail-to-rail input voltage range extending beyond both power-supply rails.
- Fast propagation delay combined with low power consumption suitable for portable equipment.
- Internal hysteresis ensures clean output switching even with slow-moving input signals.
- CMOS/TTL-compatible outputs that pull to within 300mV of either supply rail without external pullup circuitry.
Applications
- Line Receivers
- Battery-Powered Systems
- Threshold Detectors/Discriminators
- Zero-Crossing Detectors
- Sampling Circuits
Procurement Notes
Verify the specific ordering suffix to confirm the tape-and-reel packaging configuration. Ensure the component grade matches the required operating temperature range for your application environment. Cross-reference the manufacturer's latest documentation to confirm current production status and availability constraints before finalizing procurement plans.
Selection Notes
Select this component when a dual-channel comparator is needed for 3V or 5V logic interfacing. It serves as a direct upgrade to industry-standard comparators like the MAX942, offering higher speed and lower power. Consider its rail-to-rail input capability and internal hysteresis for applications requiring robust noise immunity without external feedback resistors.
Part Context
This part belongs to the MAX914x family of high-speed, low-power comparators manufactured by Analog Devices/Maxim Integrated. The series includes single (MAX9140), dual (MAX9142), and quad (MAX9144) variants. The MAX9142 specifically provides two independent channels in an 8-pin package, balancing channel count with physical footprint constraints.
Replacement Considerations
The datasheet identifies the MAX9142 as a higher-speed, lower-power, and lower-cost upgrade to the MAX942. Designers replacing legacy MAX942 designs should verify pin compatibility and electrical parameter alignment with the MAX9142 specifications.
