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Product Detailed Parameters
- Description：LINEAR IC'S
- Series：-
- Mfr：STMicroelectronics
- Package：Bulk
- 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)：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 (TA)
- Package / Case：8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Mounting Type：Surface Mount
- Supplier Device Package：8-MiniSO
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The LM2903BYST is a dual low-power voltage comparator from the LM2903B series, manufactured by STMicroelectronics. It operates on a single supply of +2 V to +36 V or dual supplies of ±1 V to ±18 V. The device features a typical supply current of 0.5 mA and an input bias current of 20 nA. It includes two independent comparators with open-collector outputs compatible with TTL, DTL, ECL, MOS, and CMOS logic families. The component is housed in an 8-pin MiniSO package and meets AEC-Q100 automotive qualification standards.
Feature Summary
- Automotive grade qualification compliant with AEC-Q100 standards
- Input common-mode voltage range extends to include the negative power rail
- Open-collector output structure ensures compatibility with various digital logic families
Applications
- Level shifters
- Sampling circuits
- Peak and zero crossing detectors
- Threshold detectors
- Automotive electronics
Procurement Notes
Verify that the specific ordering code matches the required MiniSO-8 packaging configuration. Confirm compliance with AEC-Q100 automotive qualification requirements for the target application environment. Ensure the design accommodates the open-collector output nature and pull-up resistor requirements specified in the datasheet electrical characteristics.
Selection Notes
Select this component when automotive reliability is required alongside low power consumption. The B-grade variant offers improved electrical characteristics compared to standard versions. Consider the MiniSO-8 package dimensions for PCB layout constraints. Verify that the wide input common-mode range including the negative rail meets system signal requirements.
Part Context
This part belongs to the LM2903B family of linear comparators designed for single-supply operation over a wide voltage range. The 'Y' suffix indicates the B-grade version with enhanced specifications, while 'ST' denotes the MiniSO-8 surface-mount package. It serves as a robust alternative for general-purpose comparison tasks in industrial and automotive settings.
Replacement Considerations
LM2903BYDT (SO-8 package)
FAQ
Does the LM2903BYST support split power supply operation?
Yes, the device can operate from dual power supplies ranging from ±1 V to ±18 V.
What is the maximum operating temperature for this component?
The operating free-air temperature range extends up to +125 °C.
