LM2901NS Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments LM2901NS is a quad differential comparator operating up to 30 V supply with open-collector outputs and 0.25 µA bias current. The 14-pin SOIC package houses 4 independent comparator channels suited for threshold detection and logic-level conversion in industrial systems.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- OBSOLETE
- Datasheet
- LM2901NS Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LM2901NS?
- Quad independent comparator channels in a single 14-pin SOIC package reducing component count versus discrete solutions
- Open-collector output structure allowing wired-AND configurations and direct interfacing to 5 V or 3.3 V logic buses
- Wide 30 V supply range with 0.25 µA maximum bias current enabling low-power threshold detection from automotive to industrial supply rails
What is LM2901NS used for?
The LM2901NS is widely used in window comparator circuits, zero-crossing detectors, and analog-to-digital threshold conversion applications operating from supplies up to 30 V. Its four open-collector outputs are ideal for driving indicator LEDs, relays, and logic inputs simultaneously in industrial sensor interfaces and battery management systems. The 14-pin SOIC package fits standard PCB layouts used in automotive body electronics and HVAC control panels.
What are the specifications of LM2901NS?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Amplifier Type | COMPARATOR |
| Average Bias Current-Max (IIB) | 0.5 µA |
| Bias Current-Max (IIB) @25C | 0.25 µA |
| Input Offset Voltage-Max | 15000 µV |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e4 |
| Number of Functions | 4 |
| Output Type | OPEN-COLLECTOR |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Response Time-Nom | 1300ns |
| Supply Current-Max | 2.5mA |
| Supply Voltage Limit-Max | 36V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Malaysia |
Where can I find the LM2901NS datasheet?
LM2901NS Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LM2901NS?
Compatible alternatives and drop-in replacements for LM2901NS:
Comparator, 4 Func, 7000uV Offset-Max, 1300ns Response Time, BIPolar, PDIP14
Comparator, 4 Func, 7000uV Offset-Max, 1300ns Response Time, BIPolar, PDIP14
Frequently Asked Questions
How does the LM2901NS open-collector output simplify interfacing between 5 V comparator logic and 3.3 V microcontroller inputs?
The open-collector output of the LM2901NS allows the pull-up resistor to be connected to a 3.3 V rail even when the comparator is powered from a 5 V supply, translating logic levels without additional level-shifter ICs. With a 10 kΩ pull-up to 3.3 V, the output high level meets most microcontroller VIH thresholds, and the low state is pulled to below 0.4 V, satisfying standard VOL specifications.
Which battery monitoring designs benefit from the LM2901NS 0.25 µA bias current and 30 V supply range?
Lead-acid and Li-ion battery management circuits benefit because the 0.25 µA maximum bias current at 25°C introduces negligible loading on high-impedance voltage dividers used to sense cell voltage, and the 30 V maximum supply supports 24 V industrial battery stacks directly. All 4 comparator channels can monitor overvoltage, undervoltage, and overcurrent thresholds simultaneously within a single 14-pin SOIC package.
For a 4-channel window comparator design, how does the LM2901NS compare to using four discrete single-comparator ICs?
Using the LM2901NS saves board space and cost by integrating 4 independent comparator channels in one 14-pin SOIC (JESD-30 code R-PDSO-G14) versus four separate SO-5 or SOT-23 packages. The shared supply decoupling requirement also reduces capacitor count, and the maximum input offset voltage of 15 mV is adequate for most threshold detection tasks in industrial signal conditioning.
What is the maximum input offset voltage of the LM2901NS, and when does it limit comparator accuracy?
The LM2901NS specifies a maximum input offset voltage of 15000 µV (15 mV), which limits accuracy when the differential input signals are separated by less than 15 mV. For applications requiring threshold detection at millivolt-level differences, such as precision current sensing across a 0.1 Ω shunt, a lower-offset comparator should be selected; the LM2901NS is better suited for coarser threshold comparisons where signals differ by 50 mV or more.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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