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Product Detailed Parameters
- Description：IC COMPARATOR 2 GEN PUR 8UFSON
- Series：-
- Mfr：STMicroelectronics
- 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)：-
- Current - Input Bias (Max)：-
- Current - Output (Typ)：-
- Current - Quiescent (Max)：2.5mA
- CMRR, PSRR (Typ)：-
- Propagation Delay (Max)：-
- Hysteresis：-
- Operating Temperature：-
- Package / Case：8-UFDFN Exposed Pad
- Mounting Type：Surface Mount
- Supplier Device Package：8-UFSON (2x2)
- Grade：-
- Qualification：-
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Overview
The LM293QT is a dual low-power voltage comparator manufactured by STMicroelectronics, housed in an SOIC-8 package. It features two independent comparators designed for single-supply operation over a wide voltage range of 2 V to 36 V, or split supplies from ±1 V to ±18 V. The device exhibits very low supply current of 0.45 mA, with input bias current typically at 20 nA and input offset voltage at ±1 mV. Its input common-mode voltage range includes ground, and outputs are compatible with TTL, DTL, ECL, MOS, and CMOS logic families.
Feature Summary
- Dual independent low-voltage comparators optimized for single-supply applications
- Wide operating voltage range supporting both single and split power supplies
- Low power consumption with minimal supply current independent of voltage
- Output compatibility with standard digital logic families including TTL and CMOS
Applications
- Battery-powered systems requiring low quiescent current
- Voltage monitoring and level detection circuits
- Signal conditioning for microcontroller interfaces
Procurement Notes
Verify the specific suffix 'Q' against the official datasheet to confirm it denotes automotive qualification or specific reliability standards as defined by STMicroelectronics. Ensure the SOIC-8 package variant matches your PCB footprint requirements. Cross-reference the manufacturer part number with authorized distributors to confirm authenticity and traceability before procurement.
Selection Notes
Select this component when designing circuits that require precise voltage comparison with minimal power draw from a single supply rail. It is suitable for applications where the input signal may approach ground potential while the system operates on higher voltages. Consider the output drive capability and logic compatibility if interfacing directly with digital inputs without additional buffering.
Part Context
The LM293QT belongs to the LM193/LM293/LM393 family of dual comparators. These devices share core architectural similarities but differ in temperature ranges, packaging options, and specific electrical characteristics. The 'QT' designation indicates a specific package and potentially industrial or automotive grade availability within the broader comparator portfolio offered by STMicroelectronics.
Replacement Considerations
LM393QT: Pin-compatible alternative with similar electrical specifications. LM2903QT: Industrial grade version with comparable performance. TS3121: Automotive-grade single comparator alternative.
