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Texas Instruments LM339DRE4
- Part No.:
- LM339DRE4
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM339DRE4.pdf
- Description:
- IC COMPARATOR 4 DIFF 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,429
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Product details
Overview
LM339DRE4 from Texas Instruments is a quad differential comparator IC designed for precision voltage comparison in single-supply systems. It features ±0.37 mV typical input offset voltage, 1 µs propagation delay, 2–36 V supply range, 200 µA per comparator quiescent current, and rail-to-rail input common-mode range including ground - used in server PSU overvoltage detection, motor drive fault sensing, and industrial sensor interface circuits.
For engineers reviewing the LM339DRE4 datasheet, LM339DRE4 pinout, LM339DRE4 application, or LM339DRE4 equivalent, this page delivers verified specifications, SOIC-14 package details, real-world use cases, and validated alternative options for design-in and BOM optimization.
Technical Context
The LM339DRE4 implements four independent open-collector comparators with internal ESD clamps (2 kV HBM), enabling robust operation across wide input voltage ranges up to ±38 V differential. Its architecture supports direct interfacing with TTL, MOS, and CMOS logic without level-shifting.
It operates from a single 2–36 V supply with supply-current independence from voltage, and its input stage allows one input to exceed VCC while maintaining correct output state - critical for high-side sensing and battery monitoring applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V - enables direct use in 3.3 V, 5 V, 12 V, and 24 V industrial power rails without regulation. |
| Input Offset Voltage (max) | ±5.5 mV over –40°C to +85°C - ensures reliable threshold detection in temperature-varying environments like factory automation. |
| Propagation Delay | 1 µs at 5 mV overdrive - supports fast response in motor control feedback loops and UPS transfer switching. |
| Input Bias Current (typ) | 3.5 nA - minimizes loading on high-impedance sensor sources such as thermistors and 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 and reduces board-level protection component count. |
| Common-Mode Input Range | Includes ground to (VCC – 2 V) - allows direct sensing of signals referenced to system ground in single-supply configurations. |
Pinout & Package
LM339DRE4 is housed in a 14-pin SOIC (D) package measuring 8.70 mm × 3.90 mm, with standard JEDEC MS-012AC footprint and gull-wing leads for automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Comparator 2 output | Open-collector output requiring external pull-up; sinks up to 21 mA for direct logic or load driving. |
| 2 (OUT2) | Comparator 1 output | Independent open-collector output; shares no internal connection with other outputs. |
| 3 (VCC) | Positive supply | Single supply input supporting 2–36 V; powers all four comparators and internal bias circuitry. |
| 4 (IN2–) | Comparator 1 inverting input | Differential input pair with IN2+; accepts voltages from ground to VCC – 2 V. |
| 5 (IN2+) | Comparator 1 non-inverting input | Paired with IN2–; either input may exceed VCC if the other remains within common-mode range. |
| 6 (IN1–) | Comparator 2 inverting input | Electrically identical to IN2–; pin naming follows TI's channel numbering convention. |
| 7 (IN1+) | Comparator 2 non-inverting input | Paired with IN1–; supports rail-to-rail common-mode operation down to ground. |
| 8 (IN3–) | Comparator 3 inverting input | Third independent comparator input; functionally identical to IN1–/IN2–. |
| 9 (IN3+) | Comparator 3 non-inverting input | Third independent comparator input; supports same voltage range and ruggedness. |
| 10 (IN4–) | Comparator 4 inverting input | Fourth independent comparator input; fully decoupled from others for multi-threshold monitoring. |
| 11 (IN4+) | Comparator 4 non-inverting input | Enables simultaneous monitoring of four distinct voltage conditions in compact space-constrained designs. |
| 12 (GND) | Negative supply / reference | System ground return; all internal references and output saturation are referenced to this pin. |
| 13 (OUT4) | Comparator 4 output | Final open-collector output; electrically isolated and rated identically to OUT1–OUT3. |
| 14 (OUT3) | Comparator 3 output | Third open-collector output; supports independent pull-up resistors per channel for mixed-voltage interfacing. |
Key Features
| Feature | Design Value |
|---|---|
| Drop-in B-version upgrade | Replaces legacy LM339/LM2901 with improved specs - no PCB or firmware changes required. |
| Rail-to-rail input including ground | Enables direct sensing of 0 V-referenced signals (e.g., current-sense shunts) without level-shifting circuitry. |
| 2 kV HBM ESD protection | Reduces need for external TVS diodes in industrial I/O modules and field-deployable equipment. |
| Low 200 µA/comparator supply current | Supports always-on monitoring in battery-backed systems like UPS and cordless tool charge controllers. |
| ±38 V differential input capability | Allows safe comparison of signals across large potential differences - e.g., phase-to-phase AC monitoring. |
Applications
| Server Power Supply Monitoring | Vacuum Robot Safety Interlock |
|---|---|
|
Use Scenario: Real-time detection of overvoltage, undervoltage, and overcurrent faults in 12 V/48 V server PSUs. IC Role / Device Role / Timing Role: Quad comparator performs independent threshold comparisons on multiple rails and sense lines with sub-millisecond response. Use Value: Enables immediate shutdown before damage occurs, meeting IEC 62368-1 safety requirements without microcontroller intervention. |
Use Scenario: Monitoring vacuum pressure sensors and emergency stop signals in semiconductor handling robots. IC Role / Device Role / Timing Role: Compares analog sensor outputs against fixed thresholds to assert hardware-level safety cutoffs. Use Value: Provides deterministic, zero-latency response (<1 µs) independent of software stack - critical for functional safety (IEC 61508 SIL2). |
| Industrial Motor Drive Fault Detection | Building Automation Sensor Interface |
|
Use Scenario: Detecting phase loss, overtemperature, and DC bus overvoltage in HVAC and pump inverters. IC Role / Device Role / Timing Role: Four channels monitor isolated voltage and current feedback signals to trigger gate driver disable. Use Value: Eliminates reliance on slow digital sampling; hardwired comparator response prevents catastrophic failure during transient events. |
Use Scenario: Conditioning and thresholding analog outputs from CO₂, occupancy, and temperature sensors in smart thermostats. IC Role / Device Role / Timing Role: Converts linear sensor outputs into clean digital status flags for low-power MCU wake-up events. Use Value: Reduces MCU active time by >90% via hardware-triggered interrupts, extending battery life in wireless nodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad differential comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2901BDR | Identical electrical specs and SOIC-14 package; rated for –40°C to +125°C extended temperature range. | Preferred for automotive under-hood or industrial high-temp environments where LM339DRE4's 85°C max ambient is insufficient. | Select LM2901BDR when operating above 85°C ambient or when AEC-Q100 qualification is required (e.g., LM2901B-Q1 variant). |
| TL331BIDBVR | Single-channel, SOT-23-5 package; 0.37 mV offset, 1 µs delay, 2–36 V supply - same core B-version performance scaled down. | Used where only one comparator is needed and board space is constrained; not pin-compatible or functionally equivalent for quad-channel use. | Choose TL331BIDBVR for minimal footprint in point-of-load monitoring; avoid for drop-in replacement of LM339DRE4 due to channel count mismatch. |
Compared with LM2901BDR, LM339DRE4 offers identical performance at lower cost for commercial-temperature applications, while TL331BIDBVR provides scalability for space-constrained single-comparator nodes - neither is pin-compatible, but both share the same B-version silicon foundation and reliability profile.
Availability
LM339DRE4 is available at Aetrix Electronics and suitable for server PSU monitoring, vacuum robot safety interlocks, and industrial motor drive fault detection requiring stable component supply across long production lifecycles.
Supply support for LM339DRE4 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 conditioning and power management ICs.
The LM339B family - including LM339DRE4 - was engineered to replace legacy quad comparators with enhanced accuracy, speed, and ruggedness for industrial, computing, and automation systems demanding high reliability.
FAQ
What is the maximum supply voltage rating for LM339DRE4?
The LM339DRE4 has an absolute maximum supply voltage of 38 V, with recommended operating range from 2 V to 36 V. This allows direct integration into 24 V industrial systems and 36 V battery-powered tools without external regulators, while maintaining full functionality and specified timing performance across the entire range.
Does LM339DRE4 support rail-to-rail input operation?
Yes, LM339DRE4 supports a common-mode input voltage range from ground (V–) to (VCC – 2 V), enabling true rail-to-rail operation down to 0 V. This permits direct interfacing with ground-referenced sensors and shunt-based current monitors without level-shifting circuitry - a key advantage over older comparator generations.
Is LM339DRE4 pin-compatible with legacy LM339 variants?
Yes, LM339DRE4 uses the standard 14-pin SOIC (D) package and identical pinout as LM339, LM2901, and LM239. It is a documented drop-in replacement per TI's datasheet, requiring no PCB layout changes - though designers should verify that the improved B-version specs (e.g., lower offset, faster response) align with system timing and accuracy requirements.
What output configuration does LM339DRE4 use?
LM339DRE4 features four independent open-collector outputs, each capable of sinking up to 21 mA. This configuration requires external pull-up resistors but enables wired-OR logic, mixed-voltage interfacing (e.g., 3.3 V MCU with 5 V logic), and direct driving of LEDs or small relays - providing flexible signal conditioning without additional discrete components.
How does the ESD rating of LM339DRE4 compare to earlier versions?
LM339DRE4 delivers 2000 V HBM ESD rating - matching the LM339B specification and doubling the robustness of pre-B versions. This improvement stems from dedicated on-die ESD clamps, reducing susceptibility to handling damage and lowering system-level protection requirements in factory automation and field-serviceable equipment.
LM339DRE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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
LM339DRE4 FAQ
1.How can I place an order for LM339DRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM339DRE4 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 LM339DRE4 reliable?
The price and inventory of LM339DRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM339DRE4 is usually 5 days.
3.What payment methods are accepted for LM339DRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM339DRE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM339DRE4?
LM339DRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM339DRE4 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 LM339DRE4?
For technical support, including LM339DRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM339DRE4 requirements.
6.How does Aetrix verify that LM339DRE4 is sourced from the original manufacturer or authorized distributors?
All LM339DRE4 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 LM339DRE4 meets industry standards.
7.What is the process for return or replacement of LM339DRE4?
All LM339DRE4 units undergo pre-shipment inspection (PSI). If there is an issue with LM339DRE4, 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 LM339DRE4 part is unused and in its original packaging.
Return procedure for LM339DRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM339DRE4 Tags
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LM2903DR
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LM339DR
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LM393DR
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LM239DR
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LM339APWR
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LM2903P
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NCX2200GMAZ
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