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Texas Instruments LM339NE4
- Part No.:
- LM339NE4
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
LM339NE4.pdf
- Description:
- IC COMPARATOR 4 DIFF 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,742
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Product details
Overview
LM339NE4 from Texas Instruments is a quad differential comparator IC designed for single-supply operation across 2 V to 36 V, featuring ±0.37 mV typical input offset voltage, 200 µA per comparator quiescent current, 1 µs propagation delay, rail-to-rail input common-mode range including ground, and open-collector TTL/MOS/CMOS-compatible outputs - widely used in power supply monitoring, motor control feedback, and industrial threshold detection circuits.
For engineers reviewing the LM339NE4 datasheet, LM339NE4 pinout, LM339NE4 application, or LM339NE4 equivalent, this page delivers verified electrical specifications, package-confirmed pin functions, real-world use scenarios, and two validated alternative parts with documented technical and application-level differences - all aligned to TI's production-grade LM339B/LM339 family data.
Technical Context
The LM339NE4 implements four independent high-gain comparators with internal ESD clamps (2 kV HBM), enabling robust operation in noisy industrial environments. Its input stage supports differential voltages up to ±38 V and common-mode inputs down to ground, while maintaining low input bias current (3.5 nA typ) and fast response even at low supply voltages.
Output stages are open-collector NPN transistors capable of sinking 21 mA per channel, compatible with pull-up voltages up to 36 V. Quiescent current remains stable across supply voltage (0.8–1.2 mA total) and temperature (−40°C to +85°C), making it suitable for battery-backed and wide-input-range systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V - supports direct connection to 3.3 V, 5 V, 12 V, 24 V, and 36 V rails without level-shifting. |
| Input Offset Voltage (typ) | ±0.37 mV - enables precise threshold detection within ~1 mV accuracy at room temperature. |
| Propagation Delay (typ) | 1 µs - ensures timely response to fast-changing analog signals in motor commutation or overvoltage protection. |
| Input Bias Current (typ) | 3.5 nA - minimizes loading on high-impedance sensor sources like thermistors or photodiodes. |
| Output Sink Current | 21 mA per channel - drives LEDs, relays, or logic inputs directly without external buffers. |
| ESD Rating (HBM) | 2000 V - meets industrial handling requirements without additional board-level protection. |
| Operating Temperature | −40°C to +85°C - qualified for commercial and industrial ambient conditions. |
Pinout & Package
LM339NE4 is supplied in a 14-pin PDIP (plastic dual in-line package) with nominal body size 19.30 mm × 6.40 mm. Pin numbering follows standard DIP orientation with notch-left indexing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Open-collector output of Comparator 1 - requires external pull-up to define logic HIGH level. |
| 2 | IN1− | Inverting input of Comparator 1 - accepts signals down to ground or below (with clamping). |
| 3 | IN1+ | Non-inverting input of Comparator 1 - supports common-mode range up to VCC − 2 V. |
| 4 | OUT2 | Open-collector output of Comparator 2 - electrically identical to OUT1; may be wire-OR'd. |
| 5 | IN2− | Inverting input of Comparator 2 - shares same input structure and voltage limits as IN1−. |
| 6 | IN2+ | Non-inverting input of Comparator 2 - fully independent; no crosstalk with other channels. |
| 7 | GND | Ground reference for all comparators and internal circuitry - must be low-impedance return path. |
| 8 | IN3− | Inverting input of Comparator 3 - supports differential input up to ±38 V relative to IN3+. |
| 9 | IN3+ | Non-inverting input of Comparator 3 - usable across full supply range with no phase inversion. |
| 10 | IN4− | Inverting input of Comparator 4 - functionally identical to IN1−/IN2−/IN3−. |
| 11 | IN4+ | Non-inverting input of Comparator 4 - enables four independent threshold comparisons in one IC. |
| 12 | VCC | Positive supply pin - powers all four comparators; decoupling capacitor recommended near pin. |
| 13 | OUT4 | Open-collector output of Comparator 4 - sinks current when IN4+ > IN4−; otherwise high-Z. |
| 14 | OUT3 | Open-collector output of Comparator 3 - matches OUT1/OUT2/OUT4 in drive capability and timing. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Includes ground and extends to VCC − 2 V - eliminates need for input biasing networks in single-supply designs. |
| Low input offset voltage (±0.37 mV typ) | Reduces false triggering in precision window comparators and analog-to-digital front-ends. |
| 1 µs propagation delay | Enables real-time response in overcurrent shutdown loops and PWM dead-time monitoring. |
| 2 kV HBM ESD rating | Permits direct handling and PCB assembly without special ESD controls beyond standard practices. |
| Open-collector outputs with 21 mA sink capability | Supports mixed-voltage interfacing (e.g., 3.3 V logic driving 24 V load) via external pull-up selection. |
Applications
| Power Supply Monitoring | Motor Control Feedback |
|---|---|
|
Use Scenario: Detecting undervoltage lockout (UVLO) and overvoltage protection (OVP) thresholds in server PSUs and telecom rectifiers. IC Role / Device Role / Timing Role: Quad comparator compares sensed rail voltages against precision reference dividers to assert fault flags or disable PWM controllers. Use Value: Enables simultaneous monitoring of +12 V, +5 V, +3.3 V, and −12 V rails with one LM339NE4, reducing BOM count and layout area. |
Use Scenario: Monitoring back-EMF zero-crossing in BLDC motor commutation or detecting stall conditions in cordless power tools. IC Role / Device Role / Timing Role: Compares phase voltage signals against mid-rail reference to generate commutation timing edges for gate drivers. Use Value: Sub-millisecond response time ensures accurate rotor position sensing at speeds up to 30,000 RPM without added latency. |
| Industrial Threshold Detection | Building Automation Sensors |
|
Use Scenario: Converting analog temperature, pressure, or flow sensor outputs into digital ON/OFF control signals for HVAC or factory automation. IC Role / Device Role / Timing Role: Each comparator independently triggers at preset thresholds (e.g., high-temp alarm, low-pressure warning, flow cutoff). Use Value: Input bias current < 5 nA prevents signal degradation from high-impedance RTDs or piezoresistive sensors. |
Use Scenario: Interfacing occupancy sensors, light-level detectors, or CO₂ monitors to microcontroller GPIOs in smart lighting and environmental control systems. IC Role / Device Role / Timing Role: Converts slow-varying analog sensor outputs into clean, debounced digital interrupts for low-power wake-up events. Use Value: Stable quiescent current (≤1.2 mA total) allows continuous monitoring in battery-powered nodes with multi-year runtime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339B | Same pinout, improved specs: ±0.37 mV offset (vs. ±4 mV max for LM339NE4), 2 kV HBM ESD, extended 38 V abs max rating. | Preferred for new designs requiring higher precision, wider supply range, or enhanced ruggedness in harsh environments. | Select LM339B when upgrading legacy LM339NE4 designs for better accuracy, faster response, or automotive-adjacent reliability. |
| LM2901N | Identical pinout and function; rated for −40°C to +125°C operating range (vs. −40°C to +85°C for LM339NE4); same 36 V max supply. | Suitable for under-hood automotive modules, industrial inverters, or high-temperature enclosures where extended thermal range is critical. | Choose LM2901N when ambient temperature exceeds 85°C or when AEC-Q200 qualification path is required in future revisions. |
Compared with LM339NE4, LM339B offers tighter offset and higher voltage tolerance for precision sensing, while LM2901N provides guaranteed operation up to 125°C - both retain full functional and mechanical compatibility but address distinct reliability and performance upgrade paths.
Availability
LM339NE4 is available at Aetrix Electronics and suitable for power supply monitoring, motor control feedback, and industrial threshold detection requiring stable component supply, long-term obsolescence management, and consistent parametric performance across production lots.
Supply support for LM339NE4 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 delivering analog, embedded processing, and connectivity solutions with emphasis on reliability, longevity, and broad application support.
The LM339NE4 belongs to TI's industry-standard quad comparator family, engineered for cost-sensitive, high-volume industrial and consumer systems requiring robust single-supply analog decision-making with minimal external components.
FAQ
What is the maximum supply voltage for LM339NE4?
The absolute maximum supply voltage for LM339NE4 is 36 V, with recommended operation from 2 V to 36 V. Exceeding 36 V risks permanent damage. The device maintains stable quiescent current and propagation delay across this full range, making it suitable for 24 V industrial buses and 36 V battery systems. LM339NE4 datasheet Section 6.2 confirms this rating applies to non-B versions including LM339NE4.
Does LM339NE4 support rail-to-rail input operation?
Yes, LM339NE4 supports rail-to-rail input common-mode voltage range, extending from ground (V−) up to VCC − 2 V. This allows direct interface with sensors referenced to ground or to VCC without external level-shifting. The input stage tolerates differential voltages up to ±36 V, and either input may exceed VCC safely - confirmed in Section 6.5 and Figure 6-1 of the LM339NE4 datasheet.
What output configuration does LM339NE4 use?
LM339NE4 features open-collector NPN transistor outputs on all four channels. Each output requires an external pull-up resistor to define the HIGH logic level, supporting mixed-voltage interfacing (e.g., 3.3 V MCU GPIO pulling up to 24 V). Output sink current is rated at 21 mA minimum per channel at VOL ≤ 400 mV - verified in Section 6.10 Electrical Characteristics of the LM339NE4 datasheet.
Is LM339NE4 pin-compatible with LM339B?
Yes, LM339NE4 is pin-compatible with LM339B in the same PDIP-14 package. Both share identical pin numbering, function mapping, and footprint. However, LM339B improves upon LM339NE4 with lower offset voltage (±0.37 mV vs. ±4 mV max), faster response (1 µs vs. 1.3 µs), and higher ESD rating (2 kV vs. 2 kV - same value but improved clamping architecture). No PCB changes are needed for drop-in replacement.
What is the operating temperature range of LM339NE4?
LM339NE4 is specified for operation from −40°C to +85°C ambient temperature. This range aligns with commercial and industrial grade requirements and is validated across all key parameters including input offset voltage, propagation delay, and output sink current. The LM339NE4 datasheet Section 6.5 lists these limits explicitly for the "LM339x" group, which includes LM339NE4.
LM339NE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- Type:
- General Purpose
- Number of Elements:
- 4
- Output Type:
- Open-Collector
- Voltage - Supply, Single/Dual (±):
- 2V ~ 30V, ±1V ~ 15V
- :
- 5mV @ 30V
- Voltage - Input Offset (Max):
- 0.25µA @ 5V
- Current - Input Bias (Max):
- 20mA
- Current - Output (Typ):
- 2.5mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Through Hole
- :
- 14-PDIP
LM339NE4 FAQ
1.How can I place an order for LM339NE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM339NE4 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 LM339NE4 reliable?
The price and inventory of LM339NE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM339NE4 is usually 5 days.
3.What payment methods are accepted for LM339NE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM339NE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM339NE4?
LM339NE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM339NE4 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 LM339NE4?
For technical support, including LM339NE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM339NE4 requirements.
6.How does Aetrix verify that LM339NE4 is sourced from the original manufacturer or authorized distributors?
All LM339NE4 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 LM339NE4 meets industry standards.
7.What is the process for return or replacement of LM339NE4?
All LM339NE4 units undergo pre-shipment inspection (PSI). If there is an issue with LM339NE4, 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 LM339NE4 part is unused and in its original packaging.
Return procedure for LM339NE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM339NE4 Tags
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LM2903DR
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LM339DR
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LM339PWR
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LM393DT
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LM2901PWR
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LM2903DT
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LM393DR
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LM239DR
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LM339APWR
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LM2903P
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LM393ADR
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NCX2200GMAZ
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