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Product Detailed Parameters
- Description：IC COMPARATOR 2 DIFF 8SOIC
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：General Purpose
- Number of Elements：2
- Output Type：Open-Collector, Open-Drain, Rail-to-Rail
- Voltage - Supply, Single/Dual (±)：2V ~ 36V, ±1V ~ 18V
- Voltage - Input Offset (Max)：5mV @ 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：-25°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 LM293DR is a dual differential voltage comparator manufactured by Texas Instruments, designed for single-supply operation. It features an open-collector output compatible with CMOS and TTL logic families. The device operates within a supply voltage range of 2 V to 30 V and draws a typical operating supply current of 500 µA. Key electrical characteristics include a maximum input offset voltage of 5 mV and an input bias current of 250 nA. The component provides a typical response time of 300 ns and functions reliably across a temperature range from -40°C to +85°C.
Feature Summary
- Dual differential input configuration optimized for single-supply applications
- Open-collector output structure enabling direct interface with various logic families
- Low power consumption suitable for battery-operated systems
Applications
- Over-voltage and under-voltage detection circuits
- Threshold sensing and level detection
- Peak hold circuits
Procurement Notes
Verify the specific suffix 'D' confirms the SOIC-8 surface-mount package variant. Confirm RoHS compliance status as required by project specifications. Ensure the operating temperature grade matches the intended environmental conditions. Cross-reference the manufacturer part number against official datasheets to validate pinout and electrical parameters before integration.
Selection Notes
Select this component when a low-cost, dual-channel comparator is required for general-purpose threshold detection. It is suitable for designs needing open-collector outputs to drive loads or interface with different voltage domains. Consider the 300 ns response time for switching speed requirements and verify that the 500 µA supply current fits the system's power budget constraints.
Part Context
The LM293DR belongs to the LMx93/LM2903 series of dual comparators from Texas Instruments. This family shares architectural similarities with the LM193, LM293, and LM393, offering robust performance in single-supply environments. The device is widely used in industrial and consumer electronics where reliable voltage comparison is necessary without complex feedback networks.
Replacement Considerations
The LM393DR is a functional equivalent within the same product family, sharing similar pinouts and electrical characteristics. Verify compatibility regarding response time and supply current differences if substituting directly.
