Specifications
| Type | Description |
|---|---|
| Part Number | LM2903DR |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | SOIC-8 (D), 4.90 mm x 3.91 mm nominal body |
| Number of Comparators | 2; device consists of two independent voltage comparators |
| Supply Voltage Range | 2 to 30 V; LM2903 recommended operating condition, non-V devices |
| Absolute Maximum Supply Voltage | -0.3 to 36 V; non-B versions |
| Differential Input Voltage | -36 to 36 V; absolute maximum rating, non-B versions |
| Input Voltage | -0.3 to 36 V; absolute maximum rating, either input, non-B versions |
| Output Voltage | -0.3 to 36 V; absolute maximum rating, non-B versions |
| Output Current | 20 mA max; absolute maximum rating, non-B versions |
| Input Current | -50 mA max; absolute maximum rating |
| Output Short Circuit Duration | Unlimited; short circuit to ground |
| Operating Virtual-Junction Temperature | 150 °C max; absolute maximum rating |
| Storage Temperature | -65 to 150 °C; absolute maximum rating |
| Input Voltage Range | 0 to (V+) - 2.0 V; recommended operating condition, non-B devices |
| Ambient Operating Temperature | -40 to 125 °C; LM2903, LM2903V, LM2903AV, LM2903B |
| Total Supply Current | 1 to 2.5 mA; LM2903 family comparison, 5 V to 30 V max |
| Input Offset Voltage | ±15 mV max over temperature; LM2903 family comparison |
| Input Bias Current | 25 nA typ, 250 nA max; LM2903 family comparison |
| Response Time | 1.3 µs typ; LM2903 family comparison |
| ESD Rating HBM | ±2000 V; human body model, ANSI/ESDA/JEDEC JS-001 |
| ESD Rating CDM | ±1000 V; charged-device model, JEDEC JESD22-C101 |
| Junction-to-Ambient Thermal Resistance | 148.5 °C/W; D package, SOIC-8 |
| Junction-to-Case Top Thermal Resistance | 90.2 °C/W; D package, SOIC-8 |
| Junction-to-Board Thermal Resistance | 91.8 °C/W; D package, SOIC-8 |
| Junction-to-Top Characterization Parameter | 38.5 °C/W; D package, SOIC-8 |
| Junction-to-Board Characterization Parameter | 91.1 °C/W; D package, SOIC-8 |
| Output Compatibility | TTL, MOS, and CMOS compatible |
| Common-Mode Input Range Includes Ground | Yes |
| Pin 1 Function | 1OUT, comparator 1 output |
| Pin 2 Function | 1IN-, comparator 1 negative input |
| Pin 3 Function | 1IN+, comparator 1 positive input |
| Pin 4 Function | GND |
| Pin 5 Function | 2IN+, comparator 2 positive input |
| Pin 6 Function | 2IN-, comparator 2 negative input |
| Pin 7 Function | 2OUT, comparator 2 output |
| Pin 8 Function | VCC, positive supply |
| Datasheet Status | request_only |
Product Overview
The LM2903DR is a Texas Instruments dual voltage comparator for Signal_Chain designs. It contains two independent voltage comparators, with comparator 1 pins assigned to 1OUT, 1IN-, and 1IN+, and comparator 2 pins assigned to 2IN+, 2IN-, and 2OUT. The supply pins are GND and VCC.
For non-V LM2903 operating conditions, the recommended supply voltage range is 2 to 30 V and the input voltage range is 0 to (V+) - 2.0 V. The LM2903 family comparison lists 1 to 2.5 mA total supply current, ±15 mV maximum input offset voltage over temperature, 25 nA typical and 250 nA maximum input bias current, and 1.3 µs typical response time.
The SOIC-8 (D) package has a 4.90 mm x 3.91 mm nominal body. Thermal data for the D package includes 148.5 °C/W junction-to-ambient resistance and 90.2 °C/W junction-to-case top resistance. Applications include dual threshold comparison, ground-referenced sensing, logic-compatible comparator outputs, and supply or signal limit detection.
Key Features
- Two independent voltage comparators in one device
- 2 to 30 V recommended supply range
- Input range from 0 to (V+) - 2.0 V
- 1 to 2.5 mA total supply current
- ±15 mV maximum input offset over temperature
- 25 nA typical input bias current
- 1.3 µs typical response time
- TTL, MOS, and CMOS compatible output
- Common-mode input range includes ground
- SOIC-8 package with 4.90 mm x 3.91 mm body
Typical Applications
- Dual voltage threshold comparison
- Ground-referenced signal sensing
- TTL-compatible comparator outputs
- MOS-compatible comparator outputs
- CMOS-compatible comparator outputs
- Supply voltage limit detection
- Signal-chain level detection
Procurement Notes
When requesting a quote for LM2903DR, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For analog and signal-chain sourcing, supply voltage, bandwidth, accuracy, noise level, package, temperature grade, input/output configuration and qualification requirements should be verified before approval.
FAQ
How many comparators are inside the LM2903DR?
The LM2903DR contains two independent voltage comparators. The SOIC-8 pinout provides separate inputs and outputs for comparator 1 and comparator 2, with shared GND and VCC supply pins.
What supply voltage range is recommended for LM2903DR?
For LM2903 non-V devices, the recommended operating supply voltage range is 2 to 30 V. The extracted absolute maximum supply voltage for non-B versions is -0.3 to 36 V.
Does the LM2903DR input common-mode range include ground?
Yes. The extracted datasheet facts state that the common-mode input range includes ground. The recommended input voltage range for non-B devices is 0 to (V+) - 2.0 V.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: June 30, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.