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Product Detailed Parameters
- Description：IC COMPARATOR 2 DIFF 8SOIC
- 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)：20mA
- Current - Quiescent (Max)：2.5mA
- CMRR, PSRR (Typ)：-
- Propagation Delay (Max)：-
- Hysteresis：-
- Operating Temperature：-40°C ~ 125°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 LM2903D is a dual differential voltage comparator from Texas Instruments designed for single-supply operation. It features an open-collector output and operates within a supply voltage range of 2V to 30V. The device includes two independent comparators with a common-mode input voltage range that extends to ground. Key electrical characteristics include a typical response time of 1.3µs, a maximum input offset voltage of 7mV at 25°C, and a quiescent current of approximately 0.8mA at 5V. It supports an operating temperature range from -40°C to 125°C.
Feature Summary
- Dual differential voltage comparators designed for wide-range single-supply operation
- Open-collector outputs compatible with TTL, MOS, and CMOS logic families
- Common-mode input voltage range includes ground potential
Applications
- Vacuum robot systems
- Single phase UPS units
- Motor drives
- Building automation
- Factory automation & control
Procurement Notes
Verify the specific package variant (SOIC-8) against the required footprint. Confirm the manufacturer source is Texas Instruments or an authorized distributor. Ensure the component grade matches the intended environmental conditions, as standard versions support -40°C to 125°C. Check datasheet revisions for any updates to absolute maximum ratings or thermal metrics before finalizing procurement.
Selection Notes
Select this component when dual comparators are needed in a compact SOIC-8 package. It is suitable for applications requiring inputs down to ground potential. Consider the B-version variants if lower offset voltage or higher supply voltage capability is required. Verify that the open-collector output configuration aligns with the pull-up requirements of the downstream circuitry.
Part Context
The LM2903D belongs to the industry-standard LMx93/LM2903 family of dual comparators. This family is widely used in general-purpose analog switching applications. The 'D' suffix indicates an 8-pin Small Outline Integrated Circuit (SOIC) package. It serves as a foundational component for signal processing and sensing circuits where low cost and broad supply compatibility are priorities.
Replacement Considerations
LM2903B is a drop-in replacement offering improved specifications such as lower offset voltage and extended supply voltage up to 36V. Other family members like LM393 and LM293 share similar pinouts but may differ in temperature ranges or electrical limits.
