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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/NOPB is a dual differential voltage comparator manufactured by Texas Instruments, designed for single-supply operation across a wide voltage range. It features an open-collector output configuration compatible with CMOS and TTL logic families. The device operates on supply voltages from 2V to 36V, with a typical response time of 1.5μs. It includes two independent channels within an 8-pin PDIP package, supporting an operating temperature range from -40°C to +85°C.
Feature Summary
- Dual-channel differential input architecture optimized for single-supply applications
- Open-collector outputs enabling flexible interfacing with various logic standards
- Wide single-supply voltage operational capability up to 36V
Applications
- General-purpose analog signal comparison circuits
- Voltage monitoring and threshold detection systems
- Simple oscillator and pulse generation designs
Procurement Notes
Verify the specific suffix 'N' corresponds to the PDIP-8 through-hole package variant rather than surface-mount options. Confirm the 'NOPB' designation indicates lead-free and RoHS compliance status as per current manufacturer specifications. Ensure the source documentation explicitly lists this exact part number to avoid confusion with similar variants like LM2903M or LM2903D which utilize different packaging technologies.
Selection Notes
Select this component when a robust, low-power dual comparator is required for single-supply environments. The open-collector output necessitates an external pull-up resistor for proper high-state logic levels. Consider the 7mV maximum input offset voltage for precision requirements. Verify that the through-hole PDIP-8 package aligns with the target PCB layout constraints and assembly methods.
Part Context
This device belongs to the LMx93/LM2903 series of dual comparators from Texas Instruments. It shares functional similarities with the LM193, LM293, and LM393, differing primarily in temperature ranges and specific electrical characteristics. The LM2903 variant typically offers improved performance over the standard LM393 while maintaining pin compatibility and general application versatility.
Replacement Considerations
LM2903MX/NOPB (SOIC-8 Surface Mount)
FAQ
What is the maximum power dissipation for the LM2903N/NOPB?
The datasheet specifies a power dissipation rating of 510 mW.
Does the LM2903N/NOPB include a shutdown feature?
No, the device does not have a shutdown mode; it operates continuously when powered.
