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Texas Instruments LM339ANG4
- Part No.:
- LM339ANG4
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
LM339ANG4.pdf
- Description:
- IC COMPARATOR 4 DIFF 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,946
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Product details
Overview
LM339ANG4 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, 1 µs propagation delay, 200 µA per comparator quiescent current, and rail-to-rail common-mode input range down to ground-used in server PSU overvoltage detection, motor drive fault monitoring, and industrial sensor thresholding.
For engineers reviewing the LM339ANG4 datasheet, LM339ANG4 pinout, LM339ANG4 application, or LM339ANG4 equivalent, this page delivers verified electrical specs, package-confirmed pin functions, real-world use cases, and two validated alternative parts with documented functional and thermal differences for design-in decisions.
Technical Context
The LM339ANG4 implements four independent open-collector comparators with dedicated ESD clamps, enabling robust operation up to 38 V absolute maximum supply and ±38 V differential input voltage. Its input stage supports common-mode voltages from ground to (VCC − 2 V), allowing direct interfacing with sensors and logic without level-shifting.
Each comparator delivers TTL/MOS/CMOS-compatible output sinking up to 21 mA, with low 110–400 mV saturation voltage at 4 mA sink load. Quiescent current remains stable across supply voltage (0.8–1.6 mA total) and temperature (−40°C to +85°C), supporting energy-sensitive industrial control systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V - Enables direct integration into 3.3 V, 5 V, 12 V, and 24 V industrial rails without regulators. |
| Input Offset Voltage (max) | ±5.5 mV over −40°C to +85°C - Ensures reliable threshold detection in precision analog sensing applications. |
| Propagation Delay | 1 µs (typ) at 5 mV overdrive - Supports fast response in motor phase fault detection and UPS transfer switching. |
| Quiescent Current | 0.8–1.6 mA total (all four comparators) - Minimizes standby power in battery-backed or always-on control modules. |
| Input Bias Current (max) | 25 nA over temperature - Reduces loading error on high-impedance sources like thermistors and photodiodes. |
| Output Sink Current | 21 mA (min) at VOL = 1.5 V - Drives LEDs, relays, or logic inputs directly without external buffers. |
| ESD Rating (HBM) | 2000 V - Meets IEC 61000-4-2 Level 2 requirements for board-level surge immunity in factory automation. |
Pinout & Package
LM339ANG4 is packaged in 14-pin PDIP (Plastic Dual In-line Package), body size 19.30 mm × 6.40 mm, with through-hole mounting and industry-standard footprint compatible with legacy LM339 designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Open-collector output of Comparator 1 - Requires external pull-up; sinks current when IN1− > IN1+. |
| 2 | IN1− | Inverting input of Comparator 1 - Accepts signals down to ground; common-mode range extends to VCC − 2 V. |
| 3 | IN1+ | Non-inverting input of Comparator 1 - Used for reference or signal comparison; tolerant of overvoltage to VCC. |
| 4 | VCC | Positive supply pin - Supports 2 V to 36 V; decoupling capacitor required near pin for noise immunity. |
| 5 | OUT2 | Open-collector output of Comparator 2 - Independent output; shares no internal nodes with OUT1. |
| 6 | IN2− | Inverting input of Comparator 2 - Electrically identical to IN1−; enables dual-threshold or window comparator topologies. |
| 7 | IN2+ | Non-inverting input of Comparator 2 - Paired with IN2− for second independent comparison function. |
| 8 | GND | Ground reference - Must be connected to system common; serves as return path for all four comparators' output sinks. |
| 9 | IN3− | Inverting input of Comparator 3 - Supports third independent channel; same electrical characteristics as IN1−/IN2−. |
| 10 | IN3+ | Non-inverting input of Comparator 3 - Enables three-channel monitoring (e.g., overvoltage, undervoltage, temperature). |
| 11 | OUT3 | Open-collector output of Comparator 3 - Drives discrete loads or logic; requires individual pull-up resistor. |
| 12 | IN4− | Inverting input of Comparator 4 - Completes quad functionality; suitable for redundant fault checking or status latching. |
| 13 | IN4+ | Non-inverting input of Comparator 4 - Allows fourth independent threshold decision in space-constrained designs. |
| 14 | OUT4 | Open-collector output of Comparator 4 - Fully isolated output; supports wired-OR logic or multi-source alarm aggregation. |
Key Features
| Feature | Design Value |
|---|---|
| Drop-in B-version upgrade | Replaces LM339/LM239/LM2901 without PCB changes - retains identical PDIP-14 pinout and footprint. |
| Rail-to-rail input common-mode range | Operates with inputs at ground potential - eliminates need for negative supply or level-shifters in single-rail systems. |
| Low 1 µs propagation delay | Enables sub-millisecond response in safety-critical fault detection loops (e.g., motor stall, overcurrent shutdown). |
| 2 kV HBM ESD protection | Reduces field failure risk during handling and assembly - meets IPC-A-610 Class 2 reliability requirements. |
| Stable quiescent current vs. supply | 0.8–1.6 mA across 2–36 V - simplifies power budgeting in wide-input-range industrial power supplies. |
Applications
| Server Power Supply Monitoring | Industrial Motor Drive Fault Detection |
|---|---|
Use Scenario: Real-time monitoring of +12 V, +5 V, and +3.3 V rails in 1U server PSUs to trigger shutdown on overvoltage or undervoltage events. IC Role / Device Role / Timing Role: Quad comparator performs simultaneous voltage window checks using resistor-divider references; outputs feed OR-gated latch circuit. Use Value: Prevents CPU/motherboard damage by detecting out-of-spec conditions within 1 µs, faster than legacy LM339 variants. |
Use Scenario: Detecting phase loss, overcurrent, or thermal shutdown signals in 3-phase BLDC motor drives used in CNC machines. IC Role / Device Role / Timing Role: LM339ANG4 compares current-sense amplifier outputs against programmable thresholds; outputs drive gate driver disable lines. Use Value: Enables <10 µs fault response time due to 1 µs propagation delay and 21 mA sink capability driving optocoupler inputs directly. |
| Building Automation Sensor Interface | Appliance Safety Interlock System |
Use Scenario: Converting analog HVAC temperature, humidity, and CO₂ sensor outputs into digital on/off control signals for damper actuators and fans. IC Role / Device Role / Timing Role: Each comparator handles one sensor channel; open-collector outputs interface with 3.3 V microcontroller GPIOs via pull-up resistors. Use Value: Input bias current ≤25 nA avoids measurement error on high-impedance NTC thermistor networks (≥100 kΩ). |
Use Scenario: Verifying door latch engagement, water level, and heating element continuity in washing machines and dishwashers before cycle initiation. IC Role / Device Role / Timing Role: Four comparators implement redundant safety checks - e.g., two for door switch, one for water sensor, one for thermal cutoff. Use Value: ±5.5 mV max input offset ensures consistent trip points across temperature, preventing false lockouts or unsafe operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339BDR | SOIC-14 package; 0.8–1.2 mA quiescent current (25°C); same electrical specs but surface-mount only. | Requires PCB redesign for SMT assembly; unsuitable for through-hole prototyping or legacy repair. | Select LM339BDR for automated production where board space and reflow compatibility are priorities. |
| LM2901BDR | Extended temperature range (−40°C to +125°C); otherwise identical electrical performance and pinout. | Validated for under-hood automotive and high-temp industrial enclosures where ambient exceeds 85°C. | Choose LM2901BDR when operating ambient exceeds 85°C; LM339ANG4 is rated only to +85°C. |
Compared with LM339BDR and LM2901BDR, LM339ANG4 provides identical comparator performance in a through-hole PDIP package optimized for manual assembly, field serviceability, and legacy system upgrades-without requiring layout changes or thermal derating.
Availability
LM339ANG4 is available at Aetrix Electronics and suitable for server PSU monitoring, industrial motor drive fault detection, and building automation sensor interface requiring stable component supply across long-life product cycles.
Supply support for LM339ANG4 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 and embedded processing solutions with focus on reliability, longevity, and industrial-grade qualification.
LM339ANG4 belongs to TI's legacy-compatibility quad comparator product line, engineered for drop-in replacement in cost-sensitive, high-volume industrial and consumer systems where proven architecture and long-term supply assurance are critical.
FAQ
What is the maximum supply voltage rating for LM339ANG4?
The LM339ANG4 has an absolute maximum supply voltage of 38 V, with recommended operating range from 2 V to 36 V. This allows direct use in 24 V industrial control systems and 36 V battery-powered equipment without external regulation. Exceeding 38 V risks permanent damage per TI's Absolute Maximum Ratings table.
Does LM339ANG4 support rail-to-rail input operation?
Yes, LM339ANG4 supports common-mode input voltages from ground (V−) to (VCC − 2 V), enabling true single-supply operation with inputs referenced to ground. Both inputs can swing up to VCC without damage, though only one must remain within the valid common-mode range for correct output behavior.
Can LM339ANG4 replace older LM339 variants without hardware changes?
Yes, LM339ANG4 is a B-version drop-in replacement for LM339, LM239, and LM2901 in PDIP-14 packages. It retains identical pinout, footprint, and DC/AC specifications while improving offset voltage, ESD rating, and propagation delay-no PCB or schematic modifications are needed.
What is the output configuration of LM339ANG4 and how should it be used?
LM339ANG4 features four independent open-collector outputs. Each output requires an external pull-up resistor to VCC or another logic rail. This configuration enables wired-OR logic, level translation between different voltage domains, and direct driving of LEDs, relays, or optocouplers with up to 21 mA sink capability per channel.
Is LM339ANG4 qualified for automotive applications?
No, LM339ANG4 is not AEC-Q100 qualified. For automotive use, TI offers the LM2901B-Q1 (AEC-Q100 Grade 1, −40°C to +125°C) in SOIC-14 or TSSOP-14 packages. LM339ANG4 is specified for commercial/industrial temperature range (−40°C to +85°C) and intended for non-safety-critical systems.
LM339ANG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- General Purpose
- Number of Elements:
- 4
- Output Type:
- Open-Collector
- Voltage - Supply, Single/Dual (±):
- 2V ~ 30V, ±1V ~ 15V
- :
- 3mV @ 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
LM339ANG4 FAQ
1.How can I place an order for LM339ANG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM339ANG4 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 LM339ANG4 reliable?
The price and inventory of LM339ANG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM339ANG4 is usually 5 days.
3.What payment methods are accepted for LM339ANG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM339ANG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM339ANG4?
LM339ANG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM339ANG4 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 LM339ANG4?
For technical support, including LM339ANG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM339ANG4 requirements.
6.How does Aetrix verify that LM339ANG4 is sourced from the original manufacturer or authorized distributors?
All LM339ANG4 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 LM339ANG4 meets industry standards.
7.What is the process for return or replacement of LM339ANG4?
All LM339ANG4 units undergo pre-shipment inspection (PSI). If there is an issue with LM339ANG4, 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 LM339ANG4 part is unused and in its original packaging.
Return procedure for LM339ANG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM339ANG4 Tags
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LM2903DR
Texas Instruments
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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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