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Product Detailed Parameters
- Description：IC COMPARATOR 2 GEN PUR 8SOIC
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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 LM2903MX is a dual precision 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 operates within a junction temperature range of -40°C to +85°C. The device includes two independent comparators with an open-collector output capable of sinking up to 16 mA. Key electrical characteristics include a maximum input offset voltage of 7 mV, low input bias current of 250 nA, and a typical response time of 1.5 µs.
Feature Summary
- Low power consumption with supply current drain independent of the supply voltage magnitude
- Input common-mode voltage range includes ground, allowing sensing near zero volts
- Open-collector outputs compatible with TTL, DTL, ECL, MOS, and CMOS logic systems
- Differential input voltage range equals the full power supply voltage
Applications
- Battery powered applications
- Industrial applications
- Limit comparators
- Analog to digital converters
- Time delay generators
Procurement Notes
Verify the specific package variant (SOIC-8) against the datasheet orderable addendum. Confirm that the operating junction temperature rating aligns with system requirements, as the LM2903 is rated for -40°C to +85°C. Ensure proper pull-up resistor selection for the open-collector outputs to match the target logic voltage levels.
Selection Notes
Select this component when low power drain and high precision are required in a dual comparator configuration. The LM2903 offers lower offset voltage specifications compared to standard variants like the LM393. Consider the SOIC-8 package dimensions if space constraints exist, and verify thermal derating requirements for high-temperature environments.
Part Context
The LM2903MX belongs to the LMx93-N series, which also includes the LM193, LM293, and LM393. These devices share similar architectures but differ in temperature ranges and offset voltage specifications. The LM2903 specifically targets industrial applications requiring wider temperature coverage than the commercial LM393.
Replacement Considerations
LM2903M/NOPB
FAQ
Can the LM2903MX operate with both single and dual power supplies?
Yes, the device supports single supply operation from 2.0 V to 36 V or dual supply configurations ranging from ±1.0 V to ±18 V.
What is the maximum differential input voltage allowed?
The differential input voltage can equal the entire power supply voltage without damaging the device.
