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Texas Instruments LM339DRG4
- Part No.:
- LM339DRG4
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM339DRG4.pdf
- Description:
- IC COMPARATOR 4 DIFF 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,308
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Product details
Overview
LM339DRG4 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, and rail-to-rail input common-mode range including ground - widely deployed in server PSU overvoltage protection circuits.
For engineers reviewing the LM339DRG4 datasheet, LM339DRG4 pinout, LM339DRG4 application, or LM339DRG4 equivalent, this page delivers verified electrical specs, SOIC-14 package mapping, real-world use cases in industrial power monitoring, and two validated alternative parts with documented functional and thermal differences.
Technical Context
The LM339DRG4 implements four independent open-collector 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.
Designed as a B-version upgrade, it replaces legacy LM339/LM2901 with improved supply voltage headroom (36 V max), tighter offset drift over temperature (±5.5 mV max from –40°C to +85°C), and enhanced thermal performance in SOIC packaging (RθJA = 111.2°C/W).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V - supports wide-input industrial DC supplies without external regulation |
| Input Offset Voltage (max) | ±5.5 mV over –40°C to +85°C - enables accurate threshold detection in precision sensing |
| Propagation Delay | 1 µs at 5 V supply - sufficient for fast fault response in UPS and motor drive protection |
| Input Bias Current (typ) | 3.5 nA - minimizes loading on high-impedance sensor networks and voltage dividers |
| Output Sink Current | 21 mA per channel - drives standard LED indicators or TTL/MOS logic directly |
| ESD Rating (HBM) | 2000 V - meets IEC 61000-4-2 Level 3 for board-level robustness |
| Quiescent Current | 0.8–1.2 mA total (all four comparators) - enables low-power always-on monitoring |
Pinout & Package
LM339DRG4 is housed in a 14-pin SOIC (D) package measuring 8.70 mm × 3.90 mm, with gull-wing leads and surface-mount compatibility. Thermal resistance is RθJA = 111.2°C/W, suitable for convection-cooled industrial PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT2 | Open-collector output of comparator 2 - requires external pull-up for logic-high assertion |
| 2 | OUT1 | Open-collector output of comparator 1 - shares same sink capability and voltage tolerance as OUT2 |
| 3 | VCC | Positive supply rail - accepts 2 V to 36 V; powers all four comparators |
| 4 | IN2– | Inverting input of comparator 1 - forms differential pair with IN2+ for threshold comparison |
| 5 | IN2+ | Non-inverting input of comparator 1 - accepts signals within (V–) to (V+) – 2.0 V |
| 6 | IN1– | Inverting input of comparator 2 - electrically identical to IN2– but assigned to channel 2 |
| 7 | IN1+ | Non-inverting input of comparator 2 - used for dual-sensing configurations (e.g., window comparator) |
| 8 | IN3– | Inverting input of comparator 3 - enables third independent voltage decision path |
| 9 | IN3+ | Non-inverting input of comparator 3 - supports redundant or cascaded monitoring functions |
| 10 | IN4– | Inverting input of comparator 4 - allows full quad-channel utilization in multi-zone systems |
| 11 | IN4+ | Non-inverting input of comparator 4 - accommodates reference voltage distribution across all channels |
| 12 | GND | Negative supply/reference node - must be connected to system ground plane for stable operation |
| 13 | OUT4 | Open-collector output of comparator 4 - compatible with 5 V, 3.3 V, or 24 V pull-up rails |
| 14 | OUT3 | Open-collector output of comparator 3 - shares identical electrical characteristics with other outputs |
Key Features
| Feature | Design Value |
|---|---|
| Drop-in B-version upgrade | Replaces LM339/LM2901 without PCB changes - same SOIC-14 footprint and pinout |
| Rail-to-rail input common-mode range | Operates with inputs at ground potential - eliminates need for level-shifting in low-side sensing |
| ±38 V differential input rating | Withstands transient overvoltages beyond supply rails - critical for industrial bus monitoring |
| Low 200 µA/comparator supply current | Reduces total system standby power by >30% vs. legacy A-versions - extends battery backup runtime |
| Open-collector outputs | Enable wired-OR logic, flexible voltage translation, and direct interface to MOSFET gate drivers |
Applications
| Server Power Supply Monitoring | Vacuum Robot Safety Interlock |
|---|---|
|
Use Scenario: Real-time detection of overvoltage, undervoltage, and brownout conditions on +12 V, +5 V, and +3.3 V rails in 1U server PSUs. IC Role / Device Role / Timing Role: Quad comparator performs simultaneous rail validation with dedicated thresholds per output channel. Use Value: Enables immediate shutdown via OR'd outputs before downstream ASIC damage occurs - meeting IEC 62368-1 fault response requirements. |
Use Scenario: Monitoring vacuum pressure sensor output against multiple safety thresholds during robotic arm motion sequences. IC Role / Device Role / Timing Role: LM339DRG4 compares analog pressure signal to three independent reference levels for zone-based hazard classification. Use Value: Delivers sub-millisecond fault detection (<1 µs propagation) to halt motion before vacuum loss causes part drop or collision. |
| Single-Phase UPS Battery Management | Factory Automation Input Conditioning |
|
Use Scenario: Threshold detection of battery voltage, AC input presence, and inverter output waveform integrity in line-interactive UPS units. IC Role / Device Role / Timing Role: Four comparators independently monitor battery SOC, grid status, load current sense, and zero-crossing timing. Use Value: Supports seamless transfer between utility and battery modes with <50 µs decision latency - preventing data corruption in connected IT loads. |
Use Scenario: Converting analog 0–10 V or 4–20 mA sensor signals into clean digital logic levels for PLC input modules. IC Role / Device Role / Timing Role: LM339DRG4 acts as programmable threshold detector with adjustable hysteresis via external feedback. Use Value: Eliminates noise-induced false triggers in factory floor environments - achieving >60 dB noise immunity at 50/60 Hz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2901BDRG4 | Identical electrical specs but rated for –40°C to +125°C operating range vs. LM339DRG4's –40°C to +85°C | Required for under-hood automotive or high-temp industrial enclosures where ambient exceeds 85°C | Select LM2901BDRG4 when extended temperature qualification is mandatory; otherwise LM339DRG4 offers cost advantage |
| TLV331IDR | Single-channel, rail-to-rail input/output, 36 V supply, but only 15 µA quiescent current and 300 ns propagation delay | Used in ultra-low-power, space-constrained designs where quad integration is unnecessary | Choose TLV331IDR for battery-powered edge sensors; avoid for multi-threshold industrial monitoring requiring four channels |
Compared with LM2901BDRG4, LM339DRG4 trades extended temperature range for lower unit cost in commercial-grade power systems; compared with TLV331IDR, it provides integrated quad functionality at higher power and slower speed - making it optimal for fixed-installation industrial control panels.
Availability
LM339DRG4 is available at Aetrix Electronics and suitable for server PSU monitoring, vacuum robot safety interlocks, and factory automation input conditioning requiring stable component supply across long production lifecycles.
Supply support for LM339DRG4 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 over 50 years of innovation in precision analog ICs.
The LM339 family was engineered for industrial voltage monitoring and fault detection, delivering rugged, pin-compatible comparators optimized for reliability in harsh electrical environments.
FAQ
What is the maximum supply voltage for LM339DRG4?
The LM339DRG4 supports a maximum supply voltage of 36 V, with absolute maximum rating up to 38 V. This allows direct interfacing with unregulated industrial DC buses and eliminates need for pre-regulation in many 24 V and 36 V systems. Operation above 36 V risks permanent damage per TI's Absolute Maximum Ratings table.
Does LM339DRG4 require external pull-up resistors on its outputs?
Yes, LM339DRG4 features open-collector outputs and requires external pull-up resistors to define the logic-high voltage level. Typical values range from 1 kΩ (for fast switching) to 10 kΩ (for low power), connected between VCC or another logic rail and each OUTx pin. Without pull-ups, outputs remain floating and cannot assert HIGH.
Can LM339DRG4 operate with inputs below ground potential?
No - the LM339DRG4 common-mode input range extends down to ground (V–), but inputs must not go more than 0.3 V negative relative to GND. Exceeding this causes incorrect output states and excessive input current. For true negative-input capability, a level-shifting circuit or rail-to-rail input comparator like TLV3701 is required.
How does LM339DRG4 differ from the original LM339?
The LM339DRG4 is the B-version, offering improved specifications over the legacy LM339: lower input offset voltage (±5.5 mV vs. ±9 mV), faster response (1 µs vs. 1.3 µs), higher ESD rating (2 kV HBM), and extended supply voltage (36 V vs. 30 V). It maintains full pin and functional compatibility, enabling drop-in replacement without design changes.
Is LM339DRG4 suitable for automotive applications?
LM339DRG4 is qualified for commercial temperature range (–40°C to +85°C), making it suitable for under-dash infotainment or body-control modules. For engine bay or ADAS applications requiring –40°C to +125°C, TI's LM2901B-Q1 (AEC-Q100 qualified) is the appropriate automotive-grade alternative - LM339DRG4 itself is not AEC-Q100 certified.
LM339DRG4 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 ~ 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:
- Surface Mount
- :
- 14-SOIC
LM339DRG4 FAQ
1.How can I place an order for LM339DRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM339DRG4 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 LM339DRG4 reliable?
The price and inventory of LM339DRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM339DRG4 is usually 5 days.
3.What payment methods are accepted for LM339DRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM339DRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM339DRG4?
LM339DRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM339DRG4 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 LM339DRG4?
For technical support, including LM339DRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM339DRG4 requirements.
6.How does Aetrix verify that LM339DRG4 is sourced from the original manufacturer or authorized distributors?
All LM339DRG4 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 LM339DRG4 meets industry standards.
7.What is the process for return or replacement of LM339DRG4?
All LM339DRG4 units undergo pre-shipment inspection (PSI). If there is an issue with LM339DRG4, 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 LM339DRG4 part is unused and in its original packaging.
Return procedure for LM339DRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM339DRG4 Tags
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