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Product Detailed Parameters
- Description：STD AMPLIFIERS
- Series：-
- Mfr：STMicroelectronics
- Package：Bulk
- Type：General Purpose
- Number of Elements：2
- Output Type：Open-Collector, CMOS, DTL, ECL, MOS, TTL
- Voltage - Supply, Single/Dual (±)：2V ~ 36V, ±1V ~ 18V
- Voltage - Input Offset (Max)：4mV @ 36V
- Current - Input Bias (Max)：0.15µA @ 36V
- Current - Output (Typ)：22mA
- Current - Quiescent (Max)：2.5mA
- CMRR, PSRR (Typ)：-
- Propagation Delay (Max)：-
- Hysteresis：-
- Operating Temperature：-40°C ~ 125°C
- Package / Case：8-WFDFN Exposed Pad
- Mounting Type：Surface Mount, Wettable Flank
- Supplier Device Package：8-DFN (2x2)
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The LM2903BYQ3T is a low-power dual voltage comparator manufactured by STMicroelectronics, belonging to the LM2903B series. It features an open-collector output compatible with TTL, DTL, ECL, MOS, and CMOS logic families. The device operates from a single supply of +2 V to +36 V or dual supplies of ±1 V to ±18 V. Key electrical characteristics include a maximum input offset voltage of 7 mV at 30 V, a maximum input bias current of 0.25 µA at 5 V, and a typical output current of 16 mA. It supports a maximum static current of 2.5 mA and functions within a temperature range of -40°C to 125°C. The component is supplied in an 8-MiniSO package.
Feature Summary
- Dual independent comparators designed for wide voltage range operation
- Input common-mode voltage includes the negative rail
- Open-collector outputs compatible with various logic families
- Low power consumption independent of supply voltage
Applications
- Automotive electronic systems requiring AEC-Q100 qualified components
- General-purpose signal conditioning circuits
- Voltage monitoring and threshold detection applications
Procurement Notes
Verify the specific suffix Q3T against official STMicroelectronics documentation to confirm automotive qualification status and tape-and-reel packaging specifications. Ensure the ordering part number matches the required package type and environmental compliance standards before procurement. Cross-reference the manufacturer's latest datasheet for any updates on pinout or electrical limits.
Selection Notes
Select this component when dual comparators with automotive reliability are required. It is suitable for designs needing wide single-supply operation and rail-to-rail input common-mode capability. Consider the 8-MiniSO package constraints for PCB layout. Verify that the open-collector output configuration aligns with the downstream circuit requirements.
Part Context
This part belongs to the LM2903 family of low-power dual voltage comparators. The 'B' suffix typically denotes specific performance variations within the series, while 'Q3' indicates automotive qualification under AEC-Q100 standards. The 'T' suffix designates the reel packaging format. This family is distinct from the standard LM2903 and higher-ESD variants like the LM2903W.
Replacement Considerations
The LM2903YQ3T is a confirmed substitute offering identical functionality in an 8-DFN(2x2) package. Designers must account for the physical footprint difference between the 8-MiniSO and 8-DFN packages during board redesign.
