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Texas Instruments LM339M/NOPB
- Part No.:
- LM339M/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM339M/NOPB.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,167
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Product details
Overview
LM339M/NOPB from Texas Instruments is a quad open-collector voltage comparator IC designed for industrial and embedded signal conditioning. It operates from 2 V to 36 V single supply (or ±1 V to ±18 V dual), features ±3 mV max input offset voltage, 0.8 mA typical supply current per comparator, and input common-mode range extending to ground - enabling direct sensing of low-side signals in battery-powered or rail-to-rail systems.
For engineers reviewing the LM339M/NOPB datasheet, LM339M/NOPB pinout, LM339M/NOPB application, or LM339M/NOPB equivalent, this page delivers verified electrical specs, SOIC-14 package details, TTL/CMOS-compatible output behavior, and real-world use cases including limit detection, analog-to-digital conversion, and multivibrator timing circuits.
Technical Context
The LM339M/NOPB integrates four independent high-gain comparators with PNP input stages, enabling input voltages down to GND on single-supply operation. Its uncommitted NPN open-collector outputs support wired-OR logic, level-shifting up to 36 V, and sink currents up to 16 mA with 250 mV saturation voltage at 4 mA.
It uses no antisaturation clamps, yielding ultra-low 0.1 nA output leakage in OFF state - critical for high-impedance node switching. Bias current is supply-independent across 2–36 V, and differential input voltage tolerance exceeds supply rails (up to ±36 V), provided inputs stay ≥ −0.3 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V DC (single) or ±1 V to ±18 V (dual) - supports wide-input industrial power rails and battery-backed systems. |
| Input Offset Voltage | ±3 mV max - enables accurate threshold detection without trimming in precision limit-comparator applications. |
| Supply Current | 0.8 mA typical per comparator - allows four-channel comparison in low-power portable devices. |
| Input Bias Current | 25 nA max - minimizes loading on high-impedance sensor sources like thermistors or photodiodes. |
| Output Saturation Voltage | 250 mV at 4 mA sink - ensures reliable TTL/CMOS logic-level compatibility when pulled up to 5 V. |
| Input Common-Mode Range | Includes GND to V+−1.5 V - permits direct interface with ground-referenced sensors and ADC references. |
| Response Time | 300 ns (large-signal, 5 mV overdrive) - suitable for medium-speed pulse shaping and window detection. |
Pinout & Package
LM339M/NOPB is supplied 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; support wired-OR logic and level translation. |
| 3 | V+ | Positive supply input - powers all four comparators; accepts 2–36 V DC or split supplies. |
| 4, 6, 8, 10 | INPUT1− / INPUT2− / INPUT3− / INPUT4− | Inverting inputs - accept signals down to GND; used for reference or feedback connections. |
| 5, 7, 9, 11 | INPUT1+ / INPUT2+ / INPUT3+ / INPUT4+ | Non-inverting inputs - sense analog signals; common-mode range includes ground for single-supply use. |
| 12 | GND | Ground reference - serves as return path for all comparators and bias network; must be low-impedance. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation with GND-referenced inputs | Enables direct interface with ground-based sensors (e.g., current-sense shunts, thermocouples) without level-shifting circuitry. |
| Open-collector outputs compatible with TTL/DTL/ECL/MOS/CMOS | Allows flexible logic interfacing and multi-comparator wired-OR functions (e.g., window comparators, alarm OR-ing). |
| Low 0.8 mA supply current per comparator | Supports always-on monitoring in battery-powered equipment such as smoke detectors and portable data loggers. |
| ±3 mV max input offset voltage | Reduces need for calibration in precision threshold applications like overvoltage lockout and battery charge control. |
| 25 nA max input bias current | Preserves accuracy when driving high-impedance sources like piezoelectric sensors or RC timing networks. |
Applications
| Limit Comparators | Analog-to-Digital Conversion |
|---|---|
Use Scenario: Monitoring battery voltage against overcharge/undervoltage thresholds in portable electronics. IC Role / Device Role / Timing Role: Quad comparator configured as independent high/low trip-point detectors with hysteresis. Use Value: Enables precise, low-power battery protection using only one LM339M/NOPB instead of discrete comparators. |
Use Scenario: Building a 3-bit flash ADC for panel meter display or sensor readout. IC Role / Device Role / Timing Role: Four comparators serve as parallel threshold detectors feeding a priority encoder. Use Value: Delivers cost-effective medium-resolution digitization without dedicated ADC ICs or microcontroller resources. |
| Pulse & Time Delay Generation | Multivibrators & Logic Gates |
Use Scenario: Generating fixed-duration pulses for LED strobing or motor timing in industrial controls. IC Role / Device Role / Timing Role: One-shot multivibrator using internal hysteresis and RC timing network. Use Value: Eliminates need for dedicated timer ICs; achieves stable delay with <1% drift over temperature. |
Use Scenario: Implementing AND/OR logic gates in legacy analog-digital hybrid systems. IC Role / Device Role / Timing Role: Wired-OR configuration of open-collector outputs to emulate combinational logic. Use Value: Provides glue logic without additional gate ICs - especially valuable in space-constrained PCB layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad open-collector comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339DR | Same electrical specs and SOIC-14 package; RoHS-compliant but lacks TI's NOPB (no lead-free plating) marking. | Identical functional behavior; differs only in packaging compliance documentation and traceability. | Select LM339DR for standard RoHS production; LM339M/NOPB preferred where lead-free plating verification is required. |
| TLV339IPW | Lower supply current (35 µA/comparator), rail-to-rail inputs, but 5.5 V max supply - not drop-in for 12–24 V systems. | Suitable for ultra-low-power battery apps below 5.5 V; cannot replace LM339M/NOPB in industrial 24 V control panels. | Choose TLV339IPW only when supply voltage ≤5.5 V and sub-100 µA total quiescent current is mandatory. |
Compared with LM339DR and TLV339IPW, the LM339M/NOPB uniquely balances wide 2–36 V operation, GND-sensing capability, and proven industrial reliability - making it the default choice for legacy-compatible, high-voltage, and mixed-supply designs where long-term component availability matters.
Availability
LM339M/NOPB is available at Aetrix Electronics and suitable for industrial control panels, battery management systems, and analog front-end signal conditioning requiring stable component supply across extended product lifecycles.
Supply support for LM339M/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 experience in precision analog IC design and high-volume manufacturing.
The LM339M/NOPB belongs to TI's legacy LMx39-N series of quad comparators, engineered for robustness in industrial environments - emphasizing wide supply range, ground-sensing inputs, and open-collector flexibility for system-level integration.
FAQ
What is the maximum supply voltage for LM339M/NOPB?
The LM339M/NOPB supports a maximum single-supply voltage of 36 V DC or ±18 V dual supply. Absolute maximum ratings specify 36 V across V+ and GND; exceeding this risks permanent damage. Operation at 30–36 V is fully characterized in the datasheet and commonly used in industrial 24 V systems where headroom is needed for transients.
Does LM339M/NOPB require external pull-up resistors on its outputs?
Yes, LM339M/NOPB has open-collector NPN outputs and requires external pull-up resistors to define HIGH-state voltage levels. Typical values range from 1 kΩ to 10 kΩ depending on load capacitance and speed requirements. Pull-ups may connect to any voltage within the device's 2–36 V operating range - enabling level-shifting between logic families or higher-voltage interfaces.
Can LM339M/NOPB operate with input voltages below ground?
No - the LM339M/NOPB input stage tolerates only −0.3 V minimum input voltage relative to GND (at 25°C). Driving inputs below this risks forward-biasing internal PNP base-emitter junctions, causing unpredictable output states and potential latch-up. External clamp diodes are recommended if negative transients are expected.
What is the typical response time of LM339M/NOPB?
The LM339M/NOPB exhibits a typical large-signal response time of 300 ns under 5 mV overdrive conditions with TTL-level inputs. For larger overdrives (>100 mV), response improves to ~300 ns; small-signal transitions (e.g., near threshold) may take up to 1.3 µs. Layout practices - especially minimizing input trace capacitance - are critical to achieving specified speed.
Is LM339M/NOPB pin-compatible with other LM339 variants like LM339N?
Yes - LM339M/NOPB (SOIC-14) shares identical pinout and electrical functionality with LM339N (PDIP-14) and LM339DR (SOIC-14). All variants use the same 14-pin configuration: outputs on pins 1,2,13,14; inputs on pins 4–5,6–7,8–9,10–11; V+ on pin 3; GND on pin 12. Mechanical differences exist only in package outline and thermal characteristics.
LM339M/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- 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
LM339M/NOPB FAQ
1.How can I place an order for LM339M/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM339M/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 LM339M/NOPB reliable?
The price and inventory of LM339M/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM339M/NOPB is usually 5 days.
3.What payment methods are accepted for LM339M/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM339M/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM339M/NOPB?
LM339M/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM339M/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 LM339M/NOPB?
For technical support, including LM339M/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM339M/NOPB requirements.
6.How does Aetrix verify that LM339M/NOPB is sourced from the original manufacturer or authorized distributors?
All LM339M/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 LM339M/NOPB meets industry standards.
7.What is the process for return or replacement of LM339M/NOPB?
All LM339M/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM339M/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 LM339M/NOPB part is unused and in its original packaging.
Return procedure for LM339M/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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