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Product Detailed Parameters
- Description：IC COMPARATOR 2 GEN PUR 8SOIC
- Series：-
- Mfr：Texas Instruments
- Package：Bulk,Tube
- Type：General Purpose
- Number of Elements：2
- Output Type：Open-Collector, Rail-to-Rail
- Voltage - Supply, Single/Dual (±)：2V ~ 36V, ±1V ~ 18V
- Voltage - Input Offset (Max)：7mV @ 30V
- Current - Input Bias (Max)：0.25µA @ 5V
- Current - Output (Typ)：16mA @ 5V
- Current - Quiescent (Max)：2.5mA
- CMRR, PSRR (Typ)：-
- Propagation Delay (Max)：-
- Hysteresis：-
- 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 LM2903M is a dual differential voltage comparator from Texas Instruments designed for single or split power supply operation. It features a wide supply voltage range of 2.0 V to 36 V and very low supply current drain of 0.4 mA, independent of the supply voltage. The device includes two precision comparators with an input common-mode voltage range that includes ground. It utilizes open-collector outputs compatible with TTL, DTL, ECL, MOS, and CMOS logic systems.
Feature Summary
- Low power consumption with supply current independent of voltage magnitude
- Input common-mode voltage range includes ground potential
- Open-collector outputs allow direct interfacing with various logic families
- Differential input voltage range matches the power supply voltage
Applications
- Battery powered applications
- Industrial applications
- Limit comparators
- Simple analog to digital converters
- Time delay generators
Procurement Notes
Verify the specific suffix 'M' indicates the SOIC-8 package variant when ordering. Confirm the operating temperature range requirements match the LM2903 specifications (-40°C to +85°C) rather than other variants in the series. Ensure the design accounts for the open-collector output requirement by including appropriate pull-up resistors.
Selection Notes
Select this component for designs requiring low offset voltage and low bias current on high impedance nodes. It is suitable for battery-operated systems due to its minimal power drain. Consider the LM193 if military-grade temperature ranges are needed, or the LM393 for cost-sensitive commercial applications within narrower temperature limits.
Part Context
The LM2903 belongs to the LMx93-N family of low-power, low-offset voltage dual comparators manufactured by Texas Instruments. This series was specifically engineered to operate efficiently from a single power supply over a wide voltage range while maintaining precision comparable to higher-cost operational amplifiers used in comparator configurations.
Replacement Considerations
LM2903DR
FAQ
Can the LM2903 be operated with a negative supply voltage?
Yes, the device supports dual supply configurations ranging from ±1.0 V to ±18 V.
What happens if the input voltage goes negative?
The low input voltage state must not be less than -0.3 V; otherwise, internal diode clamping may occur.
