My Inquiry
My Account
Texas Instruments LM339ADE4
- Part No.:
- LM339ADE4
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM339ADE4.pdf
- Description:
- IC COMPARATOR 4 DIFF 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,024
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM339ADE4 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 enable logic, and industrial sensor threshold monitoring.
For engineers reviewing the LM339ADE4 datasheet, LM339ADE4 pinout, LM339ADE4 application, or LM339ADE4 equivalent, this page delivers verified electrical specs, SOIC-14 package details, real-world use cases, and two confirmed alternative parts with documented functional and thermal differences.
Technical Context
The LM339ADE4 implements four independent open-collector comparators with internal ESD clamps (2 kV HBM), enabling robust input handling up to ±38 V differential voltage and operation with inputs extending to VCC without damage. Its architecture supports TTL/MOS/CMOS-compatible outputs and maintains stable quiescent current independent of supply voltage.
Designed for wide-input-voltage industrial systems, it operates across –40°C to +85°C ambient temperature, supports common-mode input voltages from ground to (VCC – 2 V), and delivers low output saturation voltage (≤400 mV at 4 mA sink) for reliable interfacing with legacy logic families.
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 power rails without level-shifting. |
| Input Offset Voltage (max) | ±5.5 mV over temperature - ensures accurate threshold detection in precision analog sensing applications. |
| Propagation Delay | 1 µs (typ) at 5 V - supports fast response in overcurrent protection and PWM feedback loops. |
| Quiescent Current | 0.8–1.2 mA total (all four comparators) - minimizes standby power in battery-backed or energy-sensitive systems. |
| Input Bias Current (typ) | 3.5 nA - allows high-impedance sensor interfaces (e.g., thermistors, RTDs) without significant loading error. |
| Output Sink Current | 21 mA (min) - drives standard LED indicators, relay coils, or logic-level MOSFET gates directly. |
| ESD Rating (HBM) | 2000 V - meets industrial handling requirements and reduces susceptibility to assembly-line electrostatic discharge. |
Pinout & Package
LM339ADE4 is packaged in a 14-pin SOIC (D package) with nominal body size 8.70 mm × 3.90 mm and standard JEDEC MS-012 footprint. Pin functions are electrically identical to industry-standard LM339 variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Comparator 1 output | Open-collector output requiring external pull-up; sinks current when IN1– > IN1+. |
| 2 (IN2–) | Comparator 2 inverting input | Accepts reference or feedback signal; common-mode range includes ground. |
| 3 (IN2+) | Comparator 2 non-inverting input | Accepts sensed signal; supports input voltages up to VCC without damage. |
| 4 (IN1–) | Comparator 1 inverting input | Used for fixed threshold comparison; compatible with resistive divider networks. |
| 5 (IN1+) | Comparator 1 non-inverting input | Accepts variable input (e.g., sensor output); tolerant of overvoltage transients. |
| 6 (VCC) | Positive supply | Single supply input; supports 2–36 V operation with no negative rail required. |
| 7 (OUT2) | Comparator 2 output | Independent open-collector output; shares no internal connection with OUT1. |
| 8 (IN3–) | Comparator 3 inverting input | Enables third independent comparison channel; same electrical specs as pins 2 and 4. |
| 9 (IN3+) | Comparator 3 non-inverting input | Supports cascaded or multi-threshold detection schemes in control logic. |
| 10 (IN4–) | Comparator 4 inverting input | Provides fourth decision node; used for fault redundancy or window-comparator configurations. |
| 11 (IN4+) | Comparator 4 non-inverting input | Completes quad-channel capability; all inputs share identical bias and offset characteristics. |
| 12 (GND) | Negative supply / reference | System ground return; must be connected directly for proper common-mode operation. |
| 13 (OUT4) | Comparator 4 output | Final open-collector output; electrically isolated from other outputs for independent load driving. |
| 14 (OUT3) | Comparator 3 output | Third output channel; supports parallel or sequential logic sequencing in safety-critical paths. |
Key Features
| Feature | Design Value |
|---|---|
| Drop-in replacement for LM339/LM239 | Pin- and function-compatible with legacy designs; no PCB or firmware changes required. |
| Rail-to-rail input common-mode range | Operates with inputs from ground to (VCC – 2 V), enabling direct interface with 0 V–referenced sensors. |
| Low input offset drift | ±0.37 mV typical at 25°C, ±5.5 mV max over –40°C to +85°C - improves long-term accuracy in thermal-varying environments. |
| High ESD ruggedness | 2 kV HBM rating - eliminates need for external TVS diodes in board-level ESD protection schemes. |
| Fast propagation delay | 1 µs response time - supports real-time monitoring in motor phase commutation and UPS transfer switching. |
Applications
| Server Power Supply Monitoring | Industrial Motor Drive Enable Logic |
|---|---|
Use Scenario: Detects overvoltage, undervoltage, and brownout conditions on +12 V, +5 V, and +3.3 V rails in redundant server PSUs. IC Role / Device Role / Timing Role: Quad comparator performs simultaneous rail validation using resistor-divider references and latched fault signaling. Use Value: Enables immediate shutdown or failover before downstream ASICs or memory modules sustain damage. | Use Scenario: Validates encoder position, current sense, and thermal sensor thresholds before enabling IGBT gate drivers in servo amplifiers. IC Role / Device Role / Timing Role: Provides hardware-enforced interlock logic with sub-microsecond response to prevent shoot-through or stall-induced overheating. Use Value: Eliminates software-based safety checks, reducing latency and improving SIL-2 functional safety compliance. |
| Building Automation Sensor Interface | Appliance Control Panel Threshold Detection |
Use Scenario: Converts analog HVAC temperature, humidity, and CO₂ sensor outputs into digital occupancy or setpoint deviation flags. IC Role / Device Role / Timing Role: Four independent channels condition signals from disparate sensors with matched gain and offset performance. Use Value: Reduces BOM count by replacing four discrete comparators or an ADC + microcontroller subsystem. | Use Scenario: Monitors door latch status, water level, heating element temperature, and spin balance in washing machines and dishwashers. IC Role / Device Role / Timing Role: Implements hardwired safety cutoffs and user interface feedback without MCU intervention. Use Value: Ensures fail-safe behavior during power loss or firmware crash, meeting IEC 60335-1 appliance safety standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad differential comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339BDR | Same SOIC-14 package; improved specs including ±0.37 mV offset (vs. ±5.5 mV max), 2 kV HBM ESD, and extended 36 V abs max rating. | Preferred for new designs requiring tighter offset tolerance and higher reliability in harsh environments. | Select LM339BDR when upgrading legacy LM339ADE4 layouts for enhanced accuracy and ESD immunity. |
| LM2901DT | TSSOP-14 package (5.0 mm × 4.4 mm); identical electrical specs but smaller footprint and higher thermal resistance (RθJA = 136.6°C/W). | Suitable for space-constrained consumer electronics where board area is critical and ambient temperature stays below 70°C. | Choose LM2901DT only if PCB real estate is limited and thermal derating analysis confirms safe operation at full load. |
Compared with LM339BDR and LM2901DT, the LM339ADE4 offers proven manufacturability in SOIC-14, lower thermal resistance (111.2°C/W), and broad qualification history in industrial power systems-making it optimal for cost-sensitive, high-volume, and thermally demanding applications.
Availability
LM339ADE4 is available at Aetrix Electronics and suitable for server PSU monitoring, industrial motor drive enable logic, and building automation sensor interface requiring stable component supply across extended temperature and voltage ranges.
Supply support for LM339ADE4 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 for industrial, automotive, and personal electronics markets.
The LM339ADE4 belongs to TI's legacy quad comparator product line, engineered for robust, low-cost, single-supply threshold detection in power management, motor control, and safety-critical system monitoring.
FAQ
What is the maximum supply voltage rating for LM339ADE4?
The LM339ADE4 has an absolute maximum supply voltage rating of 36 V. This allows direct operation from common industrial rails including 24 V DC systems without external regulation. Exceeding 36 V risks permanent device damage, and operation above 36 V is not supported under any condition per TI's SLCS006Z datasheet Section 6.1.
Does LM339ADE4 support rail-to-rail input operation?
Yes, the LM339ADE4 supports a common-mode input voltage range from ground (V–) to (VCC – 2 V). This enables direct interfacing with 0 V–referenced sensors and allows one input to reach VCC while the other remains within valid range-ensuring correct output state without damage, as specified in Section 6.7 of the LM339B datasheet.
Can LM339ADE4 replace older LM339 variants without design changes?
Yes, LM339ADE4 is a drop-in replacement for LM339, LM239, and LM2901 in SOIC-14 packages. It maintains identical pinout, electrical behavior, and thermal profile. No PCB layout, bill-of-materials, or firmware modifications are needed-verified by TI's family comparison table and "B-version is drop-in replacement" statement in Section 1 Features.
What is the typical input offset voltage of LM339ADE4?
The LM339ADE4 exhibits a typical input offset voltage of ±0.37 mV at 25°C and 5 V supply, with a maximum of ±5.5 mV across the full operating temperature range (–40°C to +85°C). This value is confirmed in Section 6.7 Electrical Characteristics for LM339B and applies identically to LM339ADE4 per TI's packaging and specification alignment.
Is LM339ADE4 qualified for automotive applications?
No, LM339ADE4 is not AEC-Q100 qualified. It is rated for industrial temperature range (–40°C to +85°C) and intended for commercial and industrial equipment. For automotive use, TI recommends LM2901B-Q1 or LM339B-Q1, which undergo additional stress testing and qualification per AEC-Q100 Rev H standards.
LM339ADE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- 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:
- Surface Mount
- :
- 14-SOIC
LM339ADE4 FAQ
1.How can I place an order for LM339ADE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM339ADE4 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 LM339ADE4 reliable?
The price and inventory of LM339ADE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM339ADE4 is usually 5 days.
3.What payment methods are accepted for LM339ADE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM339ADE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM339ADE4?
LM339ADE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM339ADE4 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 LM339ADE4?
For technical support, including LM339ADE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM339ADE4 requirements.
6.How does Aetrix verify that LM339ADE4 is sourced from the original manufacturer or authorized distributors?
All LM339ADE4 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 LM339ADE4 meets industry standards.
7.What is the process for return or replacement of LM339ADE4?
All LM339ADE4 units undergo pre-shipment inspection (PSI). If there is an issue with LM339ADE4, 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 LM339ADE4 part is unused and in its original packaging.
Return procedure for LM339ADE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM339ADE4 Tags
-
LM2903DR
Texas Instruments
-
LM339DR
Texas Instruments
-
LM339PWR
Texas Instruments
-
LM393DT
STMicroelectronics
-
LM2901PWR
Texas Instruments
-
LM2903DT
STMicroelectronics
-
LM393DR
Texas Instruments
-
LM239DR
Texas Instruments
-
LM339APWR
Texas Instruments
-
LM2903P
Texas Instruments
-
LM393ADR
Texas Instruments
-
NCX2200GMAZ
NXP Semiconductors
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
