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Product Detailed Parameters
- Description：IC COMPARATOR 2 GEN PUR SOT23-8
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Tape & Reel (TR)
- 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)：-
- 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：SOT-23-8
- Mounting Type：Surface Mount
- Supplier Device Package：SOT-23-8
- Grade：-
- Qualification：-
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Overview
The MAX9142EKA-T is a dual high-speed analog comparator from Analog Devices, optimized for 3V and 5V single-supply systems. It features a 40ns propagation delay at 10mV overdrive and consumes 150µA per channel at 3V. The device supports rail-to-rail input voltage ranges extending beyond the supply rails and provides CMOS/TTL-compatible outputs that swing within 300mV of either rail. It includes internal hysteresis to ensure clean switching and withstands continuous short-circuit faults to VCC or GND.
Feature Summary
- Dual-channel architecture with fast 40ns propagation delay
- Rail-to-rail input range extending beyond power-supply rails
- CMOS and TTL logic interface compatibility without external pullups
- Internal hysteresis for noise immunity and clean output switching
Applications
- Line Receivers
- Threshold Detectors/Discriminators
- Zero-Crossing Detectors
- Sampling Circuits
Procurement Notes
Verify the specific package code K8-5 (SOT23) and tape-and-reel suffix T against the datasheet ordering information. Confirm the E-grade temperature rating (-40°C to +85°C) matches system requirements. Ensure the dual-channel configuration aligns with design needs, as single/dual/quad variants exist within the family.
Selection Notes
Select this component for applications requiring low-power operation in portable equipment. The rail-to-rail inputs simplify biasing in single-supply designs. Verify that the 150µA per-comparator current consumption fits the battery life constraints. Consider the internal hysteresis value if external noise margins are insufficient.
Part Context
This part belongs to the MAX914x series of high-speed comparators. It serves as a lower-power, higher-speed upgrade to legacy industry-standard parts like the MAX942. The MAX9142 specifically offers two channels in an 8-pin SOT23 package, distinguishing it from the single-channel MAX9140 and quad-channel MAX9144.
Replacement Considerations
MAX9142ESA+T: Same functional specifications but housed in an 8-pin SO package instead of SOT23.
