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Product Detailed Parameters
- Description：PROTOTYPE
- Series：-
- Mfr：Texas Instruments
- Package：Bulk
- Type：General Purpose
- Number of Elements：2
- Output Type：Open-Collector, Rail-to-Rail
- Voltage - Supply, Single/Dual (±)：2V ~ 30V, ±1V ~ 15V
- Voltage - Input Offset (Max)：7mV @ 5V
- Current - Input Bias (Max)：0.25µA @ 5V
- Current - Output (Typ)：6mA (Min)
- Current - Quiescent (Max)：1mA
- CMRR, PSRR (Typ)：-
- Propagation Delay (Max)：300ns (Typ)
- Hysteresis：-
- Operating Temperature：-40°C ~ 125°C (TA)
- 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 LM2903DR-S is an automotive-grade dual voltage comparator from the LM2903-Q1 family, manufactured by Texas Instruments. It is AEC-Q100 qualified for Grade 1 operation across a temperature range of -40°C to +125°C. The device features two independent comparators with open-drain outputs and operates on a single supply voltage ranging from 2V to 30V. Key electrical specifications include a typical response time of 1.3µs, a maximum input offset voltage of ±15mV over the full temperature range, and a typical quiescent supply current of 1mA at 5V. The inputs support a common-mode voltage range that includes ground.
Feature Summary
- AEC-Q100 qualified for Grade 1 automotive applications with extended temperature capability
- Open-drain output configuration allows flexible logic level interfacing and wired-AND functionality
- Wide single-supply operating range enables direct connection to various system voltages
- Input common-mode voltage range extends to ground for low-side signal sensing
Applications
- Automotive power train systems
- Infotainment and instrument clusters
- Body control modules
Procurement Notes
Verify the specific suffix 'S' against the manufacturer's official orderable addendum to confirm package type and tape-and-reel specifications. Ensure the component meets the required AEC-Q100 Grade 1 qualification standards for your target application environment. Cross-reference the datasheet revision date to confirm the accuracy of the electrical characteristics provided.
Selection Notes
Select this component when an automotive-qualified dual comparator is required for space-constrained designs. The LM2903-Q1 family offers a drop-in replacement for legacy parts while providing improved ESD protection in newer variants. Consider the open-drain output requirement for pull-up resistor selection based on the target logic voltage levels.
Part Context
This part belongs to the LM2903-Q1 family, which serves as the automotive version of the industry-standard LM2903 comparator. The family provides a cost-effective solution for general-purpose comparison tasks in harsh environments. The LM2903B-Q1 variant offers enhanced performance metrics, but the standard LM2903-Q1 remains widely used for its balance of speed and power consumption.
Replacement Considerations
LM2903QDRQ1
FAQ
What is the maximum differential input voltage rating?
The absolute maximum differential input voltage is rated at ±36V.
Can the inputs go negative relative to ground?
No, the input voltage range should not go negative by more than 0.3V relative to the ground pin.
