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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 LM2903DE4 is a dual differential voltage comparator from Texas Instruments, designed for single-supply operation across a wide voltage range of 2V to 30V. It features an open-collector output compatible with TTL, MOS, and CMOS logic families. The device includes two independent comparators with a common-mode input voltage range that extends to the negative rail. It operates within a temperature range of -40°C to 125°C and provides low quiescent current consumption.
Feature Summary
- Dual independent voltage comparators optimized for single-supply applications
- Open-collector outputs ensure compatibility with various digital logic families
- Common-mode input voltage range includes the negative supply rail
Applications
- Vacuum robot systems
- Single phase UPS units
- Server power supply designs
- Cordless power tools
- Wireless infrastructure equipment
Procurement Notes
Verify the specific package type and thermal characteristics against your PCB layout requirements. Confirm that the operating voltage limits align with your system's power rails. Ensure proper ESD handling procedures are followed during assembly and testing to maintain device reliability.
Selection Notes
Select this component when a dual-channel comparator with ground-referenced inputs is required. It serves as a drop-in replacement for standard LM2903 variants. Consider the open-collector output structure for interfacing with different logic voltage levels without additional level shifting circuitry.
Part Context
This device belongs to the industry-standard LMx93/LM2903 family of dual comparators. It shares functional similarities with the LM193, LM293, and LM393 series but offers extended industrial temperature ranges. The 'E4' suffix typically denotes lead-free packaging compliant with RoHS standards.
Replacement Considerations
The LM2903B is documented as a drop-in replacement offering improved specifications such as lower offset voltage and higher supply voltage capability. Standard LM2903 variants are also compatible.
