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Texas Instruments LM339MX/NOPB
- Part No.:
- LM339MX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM339MX/NOPB.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:5,397
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Product details
Overview
LM339MX/NOPB from Texas Instruments is a quad open-collector voltage comparator IC designed for industrial and embedded signal conditioning. It features ±3 mV maximum input offset voltage, 0.8 mA supply current per comparator at 5 V, 25 nA input bias current, and operates from 2–36 V single or ±1–±18 V dual supply - enabling ground-sensing operation in battery-powered sensor interfaces.
For engineers reviewing the LM339MX/NOPB datasheet, LM339MX/NOPB pinout, LM339MX/NOPB application, or LM339MX/NOPB equivalent, key selection considerations include its rail-to-rail input common-mode range (including GND), TTL/CMOS-compatible open-collector outputs, low power consumption suitable for portable systems, and compatibility with wired-OR logic configurations.
Technical Context
The LM339MX/NOPB integrates four independent high-gain comparators on a single die, each with PNP differential input stage enabling input voltages down to ground under single-supply operation. Its uncommitted NPN output transistors support sinking up to 16 mA with 250 mV saturation voltage at 4 mA - allowing flexible level-shifting via external pull-up resistors.
No internal anti-saturation clamps are used, resulting in ultra-low 0.1 nA output leakage current in the OFF state. The device's bias network delivers supply-independent current draw across 2–36 V, and differential input voltage tolerance extends to ±36 V - permitting overvoltage-tolerant sensing without external protection diodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2–36 VDC single supply or ±1–±18 VDC dual supply - supports wide-input industrial sensors and legacy 5 V/12 V/24 V systems. |
| Input Offset Voltage | ±3 mV max - enables accurate threshold detection in precision level-shifters and analog-to-digital front-ends. |
| Supply Current | 0.8 mA per comparator at 5 V - allows four-channel comparison in battery-operated devices with minimal quiescent drain. |
| Input Bias Current | 25 nA max - minimizes loading on high-impedance sources like thermistors or photodiodes. |
| Output Saturation Voltage | 250 mV at 4 mA sink - ensures reliable logic LOW assertion into TTL/CMOS inputs even with moderate load currents. |
| Input Common-Mode Range | Includes GND to V+−1.5 V - permits direct interfacing with ground-referenced signals without level-shifting circuitry. |
| Differential Input Voltage | ±36 V max - allows safe operation when inputs exceed supply rails, e.g., in motor phase monitoring or fault detection. |
Pinout & Package
LM339MX/NOPB is housed in a 14-pin SOIC package (8.65 mm × 3.91 mm body size) with standard JEDEC MS-012AC footprint and 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 13, 14 | OUTPUT2 / OUTPUT1 / OUTPUT4 / OUTPUT3 | Open-collector NPN outputs - require external pull-up resistors; enable wired-OR logic and level translation to any compatible voltage rail. |
| 3 | V+ | Positive supply input - powers all four comparators; accepts 2–36 VDC or ±1–±18 VDC. |
| 4, 5, 6, 7, 8, 9, 10, 11 | INPUT1− / INPUT1+ / INPUT2− / INPUT2+ / INPUT3− / INPUT3+ / INPUT4− / INPUT4+ | Differential input pairs - PNP-input stage allows common-mode voltage down to GND under single supply. |
| 12 | GND | Ground reference - serves as return path for all comparators and output sinks; must be low-impedance for stable operation. |
Key Features
| Feature | Design Value |
|---|---|
| Ground-sensing input stage | Input common-mode range includes GND - eliminates need for negative supply or level-shifting in single-supply sensor interfaces. |
| Ultra-low output leakage | 0.1 nA typical OFF-state current - preserves high-impedance node integrity in sample-and-hold or analog switch applications. |
| Wide supply voltage independence | 0.8 mA supply current invariant across 2–36 V - simplifies power design in multi-rail systems and battery-voltage varying environments. |
| Overvoltage-tolerant inputs | Differential input rating of ±36 V - enables direct connection to motors, solenoids, or transducers without external clamping diodes. |
| TTL/CMOS-compatible outputs | Open-collector outputs sink up to 16 mA - interface directly with 5 V TTL, 3.3 V CMOS, or higher-voltage logic families using appropriate pull-ups. |
Applications
| Limit Comparators | Simple Analog-to-Digital Converters (ADCs) |
|---|---|
|
Use Scenario: Monitoring battery voltage against upper/lower thresholds to trigger charge/discharge control or low-battery alerts. IC Role / Device Role / Timing Role: Quad comparator configured as window detector - two channels compare against high/low reference voltages simultaneously. Use Value: Enables precise 2-bit quantization of analog battery levels with no external ADC required; low 0.8 mA total supply current extends runtime. |
Use Scenario: Converting linear potentiometer position or temperature sensor output into discrete digital states for microcontroller GPIO reading. IC Role / Device Role / Timing Role: Comparator-based flash ADC front-end - each channel compares input to a stepped reference ladder. Use Value: Provides cost-effective 2–4 bit resolution digitization without dedicated ADC IC; open-collector outputs simplify interface to MCU interrupt pins. |
| Pulse & Time Delay Generators | Multivibrators and Logic Gates |
|
Use Scenario: Generating fixed-duration pulses or adjustable time delays in power sequencing, LED blink timing, or relay control circuits. IC Role / Device Role / Timing Role: One-shot multivibrator using RC timing network and internal hysteresis - one comparator acts as trigger, another as reset. Use Value: Eliminates need for dedicated timer ICs; supply voltage independence ensures consistent delay accuracy across 5–24 V system rails. |
Use Scenario: Implementing AND/OR logic functions in legacy industrial controllers where discrete gates are unavailable or space-constrained. IC Role / Device Role / Timing Role: Wired-OR configuration of multiple open-collector outputs - enables hardware-level Boolean logic without additional ICs. Use Value: Reduces BOM count and PCB area; TTL/CMOS-compatible outputs ensure interoperability with existing logic families in mixed-voltage systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2901DR | Same electrical specs but rated for −40°C to +85°C industrial temp range vs. LM339MX/NOPB's 0°C to +70°C. | Preferred for automotive cabin modules or outdoor equipment requiring extended temperature operation. | Select LM2901DR when ambient operating temperature exceeds 70°C or falls below 0°C. |
| LM339D | Identical specifications and SOIC-14 package, but without TI's NOPB (no lead-free plating) compliance marking. | Suitable for non-RoHS-compliant legacy production or cost-sensitive applications where Pb-free finish is not mandated. | Choose LM339D only if RoHS exemption applies; otherwise LM339MX/NOPB ensures full regulatory compliance. |
Compared with LM2901DR and LM339D, the LM339MX/NOPB offers guaranteed RoHS compliance and tighter offset voltage (±3 mV vs. ±7 mV for LM2901), making it optimal for precision threshold detection in commercial-grade embedded systems where environmental compliance and accuracy are prioritized over extended temperature range or lowest unit cost.
Availability
LM339MX/NOPB is available at Aetrix Electronics and suitable for industrial automation, battery management systems, and sensor interface designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for LM339MX/NOPB includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision signal chain components.
The LM339MX/NOPB belongs to TI's legacy LMx39-N quad comparator family, engineered for robust, low-cost analog decision-making in industrial controls, power supplies, and sensor signal conditioning - emphasizing reliability, wide supply flexibility, and ease of integration.
FAQ
What is the operating temperature range for LM339MX/NOPB?
The LM339MX/NOPB is specified for operation from 0°C to +70°C ambient temperature. This commercial-grade range suits indoor industrial equipment, consumer electronics, and office automation systems. For applications requiring −40°C to +85°C, consider the LM2901DR as an alternative. All thermal derating guidelines in the LM339MX/NOPB datasheet apply within this 0°C–70°C window.
Does LM339MX/NOPB support single-supply operation with inputs referenced to ground?
Yes, the LM339MX/NOPB supports true single-supply operation with input common-mode voltage range extending to GND. Its PNP input stage allows both inputs to operate at 0 V while powered from a positive supply (e.g., 5 V or 12 V), eliminating the need for negative rails or level shifters in ground-referenced sensor interfaces - a key advantage confirmed in Section 7.1 of the official datasheet.
What is the maximum output sink current for LM339MX/NOPB?
The LM339MX/NOPB output transistor can sink up to 16 mA per channel while maintaining saturation. At 4 mA sink current, the output saturation voltage is guaranteed ≤250 mV - ensuring reliable logic LOW assertion into TTL or CMOS inputs. Exceeding 16 mA risks output stage overheating and degraded switching performance, as noted in Absolute Maximum Ratings Table 6.1.
Can LM339MX/NOPB outputs be wired together for OR logic?
Yes, the open-collector outputs of LM339MX/NOPB are explicitly designed for wired-OR configurations. Connecting multiple outputs to a shared pull-up resistor implements hardware-level OR logic - commonly used in window comparators, alarm consolidation, or priority interrupt generation. This functionality is documented in Section 7.1 and Figure 16 of the LM339MX/NOPB datasheet.
Is LM339MX/NOPB RoHS compliant and lead-free?
Yes, the "NOPB" suffix in LM339MX/NOPB denotes TI's lead-free, RoHS-compliant packaging - featuring matte tin lead finish and halogen-free molding compound. This compliance is verified in TI's official packaging information and orderable addendum, making LM339MX/NOPB suitable for export-controlled and environmentally regulated electronics manufacturing.
LM339MX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 4
- Output Type:
- Open-Collector
- Voltage - Supply, Single/Dual (±):
- 2V ~ 36V, ±1V ~ 18V
- :
- 5mV @ 30V
- Voltage - Input Offset (Max):
- 0.25µA @ 5V
- Current - Input Bias (Max):
- 16mA @ 5V
- Current - Output (Typ):
- 2.5mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-SOIC
LM339MX/NOPB FAQ
1.How can I place an order for LM339MX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM339MX/NOPB on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LM339MX/NOPB reliable?
The price and inventory of LM339MX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM339MX/NOPB is usually 5 days.
3.What payment methods are accepted for LM339MX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM339MX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM339MX/NOPB?
LM339MX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM339MX/NOPB order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LM339MX/NOPB?
For technical support, including LM339MX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM339MX/NOPB requirements.
6.How does Aetrix verify that LM339MX/NOPB is sourced from the original manufacturer or authorized distributors?
All LM339MX/NOPB products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LM339MX/NOPB meets industry standards.
7.What is the process for return or replacement of LM339MX/NOPB?
All LM339MX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM339MX/NOPB, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LM339MX/NOPB part is unused and in its original packaging.
Return procedure for LM339MX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM339MX/NOPB Tags
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