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Product Detailed Parameters
- Description：IC COMPARATOR 2 GEN PUR 8DIP
- Series：-
- Mfr：Texas Instruments
- Package：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)：700ns
- Hysteresis：-
- Operating Temperature：-40°C ~ 85°C
- Package / Case：8-DIP (0.300", 7.62mm)
- Mounting Type：Through Hole
- Supplier Device Package：8-PDIP
- Grade：-
- Qualification：-
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Overview
The LM2903N 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, with a low supply current drain of 0.4 mA independent of the supply voltage. The device includes two independent comparators with an input common-mode voltage range that includes ground. Key electrical specifications include a maximum input offset voltage of 7 mV, an input bias current of 25 nA, and a response time of 1.5 μs. It operates within a junction temperature range of -40°C to 85°C.
Feature Summary
- Wide supply voltage range supporting both single and dual power configurations
- Low power consumption with supply current independent of voltage magnitude
- Input common-mode voltage range extends to ground level
- Open collector output compatible with various logic families
Applications
- Battery powered applications
- Industrial applications
- Limit comparators
- Analog to digital converters
- Time delay generators
Procurement Notes
Verify the specific package type (PDIP/SOIC) and temperature grade against project requirements. Confirm the operating junction temperature limits (-40°C to 85°C) align with environmental conditions. 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 consumption and ground-referenced inputs are required in a single-supply system. Consider the 7 mV maximum offset voltage for precision threshold detection. Verify that the 1.5 μs response time meets the speed requirements of the application compared to faster alternatives.
Part Context
The LM2903N belongs to the LMx93-N series of low-power, low-offset voltage dual comparators. It shares architectural similarities with the LM193, LM293, and LM393 but is specifically rated for industrial temperature ranges. The 'N' suffix typically denotes standard commercial/industrial packaging options like SOIC or PDIP.
Replacement Considerations
LM193N, LM293N, LM393N
