LM339AM Texas Instruments In Stock
LM339AM is a quad single-supply comparator IC by Texas Instruments, featuring four independent voltage comparators with open-collector outputs. Key specs: 2V to 36V supply voltage, 1.3µA typical supply current, 1.3µs response time. From $0.15, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- —
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- Price
- From $0.1500(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Four independent voltage comparators in a single SOIC-8 package
- Wide supply voltage range: 2V to 36V single or ±1V to ±18V dual supply
- Ultra-low supply current: 0.8mA typical for all four comparators
- Open-collector outputs allow wired-AND configurations and flexible logic interfacing
- Input common-mode range includes ground for single-supply operation
- Industry-standard pinout compatible with LM239, LM139, and LM2901 families
Applications
The LM339AM is widely used in power supply circuits for voltage monitoring, threshold detection, and over-voltage/under-voltage protection. It is a popular choice in industrial control systems for signal conditioning, window comparators, and analog-to-digital conversion front ends. Consumer electronics and automotive applications also leverage its wide supply range for battery management, motor control triggering, and zero-crossing detection circuits.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the supply voltage range for the LM339AM?
The LM339AM operates from a single supply of 2V to 36V, or a dual supply of ±1V to ±18V. This wide range makes it suitable for battery-powered systems, 5V logic circuits, and 12V/24V industrial applications alike.
What are the typical applications of the LM339AM comparator?
The LM339AM is commonly used in voltage level detection, window comparator circuits, zero-crossing detectors, oscillators, and pulse-width modulation (PWM) control. Its single-supply compatibility and open-collector outputs make it ideal for battery management, motor drive triggering, and industrial control systems.
How many comparators does the LM339AM contain and what is its package type?
The LM339AM contains four independent voltage comparators in a single SOIC-8 (Small Outline Integrated Circuit) package. Each comparator has a dedicated input pair and open-collector output, allowing flexible use in multi-threshold detection or independent signal comparison tasks.
What devices are compatible with or can replace the LM339AM?
The LM339AM is pin-compatible with the LM239AM, LM139AM, and LM2901M comparators. These devices share the same pinout and electrical characteristics but may differ in temperature range or supply current specifications. Always verify supply voltage and output drive requirements before substituting.
Related Guides
DP83848 10/100 Mbps Ethernet PHY Transceiver: How to Choose the Right Variant
A complete selection guide for the DP83848 family: compare temperature grades, packages, JTAG support, and interface options across all five variants.
Jun 2, 2026
LM5156 Wide-VIN Boost/SEPIC/Flyback Controller: How to Choose the Right Variant
A concise selection guide for the LM5156 and LM51561 family: how to choose between automotive vs industrial grade, spread-spectrum vs fixed-frequency, and WSON-8 vs HTSSOP-14 package.
Jun 2, 2026
24LC01B I2C EEPROM Design Guide: Pinout, Write Timing, and Package Selection
Complete application note for the Microchip 24LC01B 1 Kbit I2C EEPROM: address wiring, pull-up sizing, acknowledge polling, page-write alignment, and package selection.
Jun 1, 2026
AD8531ARTZ-REEL7 Application Note: High-Current Op-Amp Design Guide
A complete design guide for the AD8531ARTZ-REEL7 250 mA rail-to-rail op-amp: decoupling, thermal budgeting, capacitive load stability, and PCB layout best practices.
Jun 1, 2026
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.
More from Texas Instruments
LM3881MME/NOPB
Small Outline Packages
Integrated Circuit
CD74HCT112EE4
Dual-In-Line Packages
Integrated Circuit
CD54AC163F3A
Ceramic Dual-In-Line Packages
Integrated Circuit
TLC2552CDGK
Small Outline Packages
Integrated Circuit
5962-9555201NXDR
Small Outline Packages
Integrated Circuit
CD4002BNSRG4
Small Outline Packages
Integrated Circuit
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.5000 | $0.50 |
| 11+ | $0.2500 | $2.75 |
| 41+ | $0.1500 | $6.15 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“The anti-counterfeit verification gave us confidence we'd never had with other China suppliers.”