LM339AMIn StockTexas Instruments
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.
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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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.5000 | $0.50 |
| 11+ | $0.2500 | $2.75 |
| 41+ | $0.1500 | $6.15 |
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