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Product Detailed Parameters
- Description：IC COMPARATOR 2 W/VOLT REF 8SOIC
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Bulk,Tube
- Type：with Voltage Reference
- Number of Elements：2
- Output Type：CMOS, Push-Pull, Rail-to-Rail, TTL
- Voltage - Supply, Single/Dual (±)：2.5V ~ 5.5V
- Voltage - Input Offset (Max)：1mV @ 5V
- Current - Input Bias (Max)：1pA @ 5V
- Current - Output (Typ)：8mA
- Current - Quiescent (Max)：130µA
- CMRR, PSRR (Typ)：80dB CMRR, 80dB PSRR
- Propagation Delay (Max)：450ns
- Hysteresis：±3mV
- 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 MAX9042BESA+T is a micropower, single-supply comparator integrated with a precision voltage reference. It features dual comparators and one reference in an 8-pin SOIC package. Operating from 2.5V to 5.5V, it consumes only 55µA of supply current. The device provides rail-to-rail inputs and outputs, with a common-mode input range extending 250mV beyond the supply rails. Input bias current is typically 1.0pA, and input offset voltage is typically 0.5mV. Internal hysteresis ensures clean output switching. The reference output voltage is set to 2.048V.
Feature Summary
- Integrates dual comparators with a precision voltage reference for space-constrained designs
- Features rail-to-rail inputs and outputs with extended common-mode voltage range
- Includes internal ±3mV hysteresis to ensure clean output switching
- Utilizes a unique output stage design that minimizes supply current surges during switching
Applications
- Precision Battery Management
- Window Comparators
- IR Receivers
- Level Translators
- Digital Line Receivers
Procurement Notes
Verify the specific suffix (E or B) against the required accuracy grade, as the base part number covers multiple grades. Confirm the package type matches the design footprint. Check the manufacturer's official documentation for the latest status, as this component may be subject to discontinuation notices. Ensure the ordering information aligns with the desired temperature range and initial accuracy specifications.
Selection Notes
Select the MAX9042 when dual comparators are needed alongside a stable 2.048V reference. Choose this part over single-comparator variants if board space allows for the additional functionality without increasing component count. Consider the B grade for standard applications where 1% initial accuracy is sufficient, or the A grade for higher precision requirements. Evaluate the low supply current benefit for battery-operated systems.
Part Context
This component belongs to the MAX9038–MAX9043/MAX9050–MAX9053 family of micropower comparators with precision references. These devices are designed for low-voltage, single-supply operation. The family includes single and dual comparator options with varying reference voltages. The MAX9042 specifically offers dual comparators with a 2.048V reference, distinguishing it from single-channel counterparts and other voltage reference variants within the series.
Replacement Considerations
Public confirmed substitute part numbers: MAX9042AEUA, MAX9042BEUA.
