LM311P-NG Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
LM311P-NG is a general-purpose single voltage comparator from Texas Instruments, featuring a wide supply range of 5 V to 28 V, open-collector output compatible with TTL and CMOS logic, and 200 ns response time in an 8-pin DIP package. From $0.50 in stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- LM311P-NG Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LM311P-NG?
- Open-collector output compatible with TTL, DTL, CMOS, and MOS logic for flexible system integration
- Wide supply voltage range from 5 V to 28 V (single supply) or ±15 V split supply for versatile circuit designs
- Fast 200 ns response time enabling reliable threshold detection in pulse-width modulation and zero-crossing circuits
What is LM311P-NG used for?
The LM311P-NG is widely used in window comparator circuits, zero-crossing detectors, and level-detection stages in power-supply control and motor-drive designs. Its open-collector output allows wired-OR bussing with multiple comparator outputs, making it suitable for fault-monitoring circuits in industrial equipment. Hobbyist and educational projects also rely on the LM311P-NG for simple analog threshold detection, oscillator circuits, and interfacing analog sensors to digital microcontroller I/O lines.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the LM311P-NG datasheet?
LM311P-NG Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LM311P-NG?
Compatible alternatives and drop-in replacements for LM311P-NG:
Frequently Asked Questions
What supply voltage range does LM311P-NG support, and can it run from a single supply rail?
LM311P-NG operates from a single supply of 5 V to 28 V or a dual supply up to ±15 V (30 V total), providing design flexibility for both single-rail 5 V microcontroller systems and dual ±12 V instrumentation supplies. Input common-mode range extends from 0 V to VCC minus 1.5 V on a single supply.
How fast does LM311P-NG respond, and is it suitable for pulse detection at 10 kHz?
With a typical response time of 200 ns, the LM311P-NG can reliably detect pulse transitions at frequencies well beyond 10 kHz, supporting applications such as 100 kHz PWM zero-crossing detection or 50 kHz waveform shaping. Its input offset voltage of 2 mV typical ensures accurate threshold detection with minimal hysteresis errors.
What logic families can be driven by the open-collector output of LM311P-NG without additional components?
The open-collector output of LM311P-NG can directly drive TTL, DTL, CMOS, and NMOS logic at output voltages up to 40 V and sink currents up to 50 mA, requiring only an external pull-up resistor of typically 1 kΩ to 10 kΩ. This allows the LM311P-NG to interface 5 V comparator logic with 12 V relay drivers or LED indicators in a single stage.
How does LM311P-NG in DIP-8 compare to surface-mount alternatives for prototyping and production?
The LM311P-NG's 8-pin through-hole DIP package with 2.54 mm pitch is ideal for breadboard prototyping and hand-soldered assemblies. For high-volume production, the equivalent LM311DR in an 8-pin SOIC package occupies roughly 60% less board area. Both versions share identical electrical characteristics including the 200 ns response time and 50 mA output sink current.
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Why Buy from FindMyChip
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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