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Product Detailed Parameters
- Description：IC COMPARATOR 2 DIFF 8SOIC
- Series：-
- Mfr：Texas Instruments
- Package：Bulk,Tube
- 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)：7mV @ 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：-40°C ~ 125°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 LM2903QDG4 is a dual differential voltage comparator manufactured by Texas Instruments. It features an open-drain output configuration and operates on a single power supply ranging from 2V to 36V. The device supports a wide operating temperature range from -40°C to +125°C. It is housed in an 8-VSSOP package with a typical propagation delay of 300ns. The input bias current is typically 250nA, and the maximum input offset voltage is 2.5mV at 5V.
Feature Summary
- Dual differential voltage comparison capability
- Open-drain output structure for flexible interfacing
- Wide single-supply voltage operation range
- Extended industrial temperature performance
Applications
- Over-voltage detection circuits
- Window comparator designs
- Threshold sensing applications
Procurement Notes
Verify the specific suffix 'DG4' indicates lead-free and RoHS compliance status as per manufacturer documentation. Confirm the package type matches the required PCB footprint. Ensure the operating conditions align with the specified electrical limits. Check for automotive qualification requirements if applicable to the target system.
Selection Notes
Select this component when dual independent comparators are needed within a compact surface-mount form factor. Consider the open-drain output requirement for pull-up resistor integration. Evaluate the 300ns propagation delay against signal speed requirements. Verify compatibility with the available single-supply voltage range.
Part Context
This part belongs to the LM2903 family of dual comparators. It shares functional similarities with the LM193, LM293, and LM393 series. The device is designed for general-purpose voltage comparison tasks. It offers a cost-effective solution for basic threshold detection needs.
Replacement Considerations
LM2903DRG4 serves as a pin-compatible alternative in different packaging. LM2903-Q1 variants offer automotive qualification for harsh environments. TLV1393 provides faster switching speeds but requires level shifting considerations.
