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Product Detailed Parameters
- Description：IC COMPARATOR 1 GEN PUR SOT23-5
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Tape & Reel (TR)
- Type：General Purpose
- Number of Elements：1
- 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：SC-74A, SOT-753
- Mounting Type：Surface Mount
- Supplier Device Package：SOT-23-5
- Grade：-
- Qualification：-
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Overview
The MAX9140EUK+T is a single-channel high-speed analog comparator from the MAX9140 family, manufactured by Analog Devices (Maxim Integrated). It operates on a single supply voltage ranging from 2.7V to 5.5V with a typical supply current of 150µA per comparator at 3V. The device features a propagation delay of 40ns with a 10mV overdrive and includes internal hysteresis of 1.5mV for clean switching. It supports rail-to-rail input voltage ranges extending beyond the power-supply rails and provides CMOS/TTL-compatible outputs that swing within 300mV of either supply rail without external pullup circuitry. The component is housed in a 5-pin SOT-23 package.
Feature Summary
- Rail-to-rail input voltage range extending beyond both power-supply rails
- Internal hysteresis ensures clean output switching even with slow-moving input signals
- Outputs pull to within 300mV of either supply rail without external pullup circuitry
- All input and output pins tolerate continuous short-circuit fault conditions to either rail
Applications
- Line Receivers
- Battery-Powered Systems
- Threshold Detectors/Discriminators
- Zero-Crossing Detectors
- Sampling Circuits
Procurement Notes
Verify the specific suffix 'EUK' corresponds to the SOT-23-5 package and E-grade temperature rating (-40°C to +85°C) as listed in the official ordering information. Confirm RoHS compliance status indicated by the '+' symbol. Ensure the datasheet revision matches the design requirements, noting that specifications are guaranteed by design over temperature ranges. Cross-reference pin configurations to avoid confusion with other variants like the MAX9141 which includes latch and shutdown functions.
Selection Notes
Select this component when a single-channel comparator with low power consumption and fast response is required for 3V or 5V systems. It serves as a direct upgrade to industry-standard comparators like the MAX941/MAX942/MAX944. Choose this part if rail-to-rail inputs and outputs are necessary to interface directly with CMOS and TTL logic without additional components. Note that unlike the MAX9141, this variant does not include latch enable or shutdown functionality.
Part Context
The MAX9140 is part of a family of high-speed, low-power comparators optimized for single-supply operation. The family includes single (MAX9140), dual (MAX9142), and quad (MAX9144) channel versions, along with the feature-rich MAX9141. These devices are designed to replace older standard comparators while offering improved speed and lower power dissipation. The MAX9140 specifically focuses on providing essential comparison capabilities in a compact footprint suitable for portable and space-constrained applications.
Replacement Considerations
Public confirmed substitute part numbers: MAX9140EXK+T (SC70 package), MAX9140AAUK+T (Automotive grade, SOT-23 package), MAX9140AAXK+T (Automotive grade, SC70 package).
