My Inquiry
My Account
Texas Instruments LM339ADG4
- Part No.:
- LM339ADG4
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM339ADG4.pdf
- Description:
- IC COMPARATOR 4 DIFF 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,961
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM339ADG4 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 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 LM339ADG4 datasheet, LM339ADG4 pinout, LM339ADG4 application, or LM339ADG4 equivalent, this page delivers verified electrical specs, SOIC-14 package details, real-world use cases, and two validated alternative parts with documented functional and thermal differences.
Technical Context
The LM339ADG4 implements four independent open-collector comparators with ESD-hardened inputs (2 kV HBM), enabling robust operation in noisy industrial environments. Its input stage supports common-mode voltages from ground to VCC – 2 V, and differential input range up to ±38 V, allowing direct sensing of high-side signals without level-shifting.
Each comparator delivers TTL-/CMOS-/MOS-compatible output sinking up to 21 mA, with low saturation voltage (≤400 mV at 4 mA) and supply-current independence from VCC. The device operates across –40°C to +85°C, matching the LM339B grade's extended temperature performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V - supports wide-input industrial rails and battery-backed systems without regulation. |
| Input Offset Voltage (max) | ±5.5 mV over –40°C to +85°C - enables accurate threshold detection in precision analog monitoring. |
| Propagation Delay | 1 µs (typ) at 5 mV overdrive - ensures fast response for motor fault cutoff and UPS transfer switching. |
| Quiescent Current | 0.8–1.2 mA total (200 µA/comparator) - reduces power budget impact in always-on supervisory circuits. |
| Input Bias Current (max) | 25 nA at 25°C - minimizes loading on high-impedance sensor bridges and voltage dividers. |
| Output Sink Current | 21 mA (min) - directly drives LEDs, relays, or logic gates without external buffers. |
| ESD Rating (HBM) | ±2000 V - meets IEC 61000-4-2 Level 2 for board-level robustness in factory automation. |
Pinout & Package
LM339ADG4 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 | OUT2 | Open-collector output of comparator 2 - requires external pull-up; sinks up to 21 mA. |
| 2 | OUT1 | Open-collector output of comparator 1 - shares same sink capability and logic polarity as OUT2. |
| 3 | VCC | Positive supply pin - accepts 2 V to 36 V; decoupling capacitor recommended near pin. |
| 4 | IN2– | Inverting input of comparator 1 - referenced to ground or system common; supports rail-to-rail common-mode. |
| 5 | IN2+ | Non-inverting input of comparator 1 - used with IN2– to form differential sense pair for voltage margining. |
| 6 | IN1– | Inverting input of comparator 2 - electrically identical to IN2–; channel naming follows TI convention. |
| 7 | IN1+ | Non-inverting input of comparator 2 - paired with IN1– for independent threshold comparison. |
| 8 | IN3– | Inverting input of comparator 3 - enables third independent decision path (e.g., temperature fault). |
| 9 | IN3+ | Non-inverting input of comparator 3 - configurable for hysteresis or reference-based trip point. |
| 10 | IN4– | Inverting input of comparator 4 - supports fourth monitoring function (e.g., fan tach error). |
| 11 | IN4+ | Non-inverting input of comparator 4 - allows simultaneous evaluation of multiple system parameters. |
| 12 | GND | Negative supply/reference plane - must be low-impedance connection to minimize noise coupling. |
| 13 | OUT4 | Open-collector output of comparator 4 - compatible with 3.3 V or 5 V logic families via pull-up. |
| 14 | OUT3 | Open-collector output of comparator 3 - identical electrical behavior to OUT1/OUT2/OUT4. |
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 resistors in single-supply designs. |
| Low input offset voltage (±0.37 mV typ) | Reduces false triggering in tight-tolerance applications like battery cell voltage balancing. |
| 2 kV HBM ESD protection | Enables direct PCB mounting in unshielded enclosures without additional transient suppression. |
| 1 µs propagation delay | Supports real-time response in safety-critical functions such as overcurrent shutdown in motor drives. |
| Open-collector outputs | Allow wired-OR logic, level translation, and flexible pull-up selection (e.g., 3.3 V MCU interface). |
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 redundant server PSUs to trigger graceful shutdown on undervoltage or overvoltage events. IC Role / Device Role / Timing Role: Quad comparator performs independent voltage window comparisons with hysteresis; outputs feed FPGA or microcontroller interrupt lines. Use Value: Enables sub-millisecond fault response using LM339ADG4's 1 µs propagation delay and rail-to-rail input range, avoiding brownout-induced data corruption. |
Use Scenario: Detecting phase loss, overtemperature, or DC bus overvoltage in 3-phase inverters used in HVAC compressors and CNC spindles. IC Role / Device Role / Timing Role: LM339ADG4 compares isolated analog feedback signals against fixed thresholds; outputs drive optocoupled gate drivers or PLC inputs. Use Value: Input offset ≤±5.5 mV ensures reliable trip points across –40°C to +85°C ambient, critical for field-deployed motor control cabinets. |
| Factory Automation Sensor Interface | Appliance Safety Interlock System |
|
Use Scenario: Converting analog outputs from pressure, flow, and proximity sensors into digital status flags for PLC input modules in packaging machinery. IC Role / Device Role / Timing Role: Each comparator conditions one sensor signal; open-collector outputs interface directly with 24 V PLC inputs via pull-up resistors. Use Value: 21 mA sink capability allows direct driving of PLC inputs without buffer transistors, reducing BOM count and board space. |
Use Scenario: Enforcing dual-channel door interlock logic in commercial ovens and washing machines to prevent operation when safety latches are unengaged. IC Role / Device Role / Timing Role: Two comparators verify mechanical switch states; remaining two implement redundant voltage supervision of control logic supply. Use Value: 2 kV HBM ESD rating ensures reliability during manual assembly and field service, meeting IEC 60335-1 requirements for household appliances. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339BDR | Same SOIC-14 package; improved specs - ±0.37 mV offset (vs. ±5.5 mV max), 1 µs delay, 2 kV HBM ESD, and extended 36 V abs max rating. | Drop-in replacement for LM339ADG4 in new designs requiring tighter offset or higher supply voltage margin. | Select LM339BDR when upgrading legacy LM339A-based systems needing lower drift or wider operating range. |
| LM2901DT | TSSOP-14 package (5.0 mm × 4.4 mm); identical electrical specs to LM339ADG4 but rated for –40°C to +125°C ambient. | Better thermal performance in high-temperature enclosures (e.g., motor drive cabinets), but requires PCB layout change. | Choose LM2901DT where ambient exceeds 85°C and board space permits smaller TSSOP footprint. |
Compared with LM339ADG4, LM339BDR offers superior offset and ESD performance in the same SOIC-14 package, while LM2901DT provides extended temperature operation in a smaller TSSOP-14 - both require no functional redesign but differ in thermal and layout constraints.
Availability
LM339ADG4 is available at Aetrix Electronics and suitable for server PSU monitoring, industrial motor drive fault detection, and appliance safety interlock systems requiring stable component supply across long production lifecycles.
Supply support for LM339ADG4 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 90 years of innovation in precision analog ICs.
The LM339ADG4 belongs to TI's industry-standard quad comparator family, engineered for cost-sensitive, high-reliability industrial and consumer applications demanding robust single-supply operation and long-term supply stability.
FAQ
What is the maximum supply voltage rating for LM339ADG4?
The LM339ADG4 has an absolute maximum supply voltage of 36 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 equipment without external regulators, provided input common-mode and differential voltage limits (±38 V) are respected.
Does LM339ADG4 support rail-to-rail input operation?
Yes, LM339ADG4 supports a common-mode input voltage range from ground (V–) to VCC – 2 V, enabling true rail-to-rail sensing in single-supply configurations. Either input may exceed VCC up to the ±38 V differential limit without damage, making it suitable for high-side current sensing and battery monitoring.
What is the output configuration of LM339ADG4 and how should it be interfaced?
LM339ADG4 features four open-collector outputs requiring external pull-up resistors. Each output sinks up to 21 mA and interfaces directly with TTL, CMOS, or MOS logic families. Pull-up voltage can differ from VCC (e.g., 3.3 V MCU I/O), enabling level translation without additional components.
How does LM339ADG4 compare to LM339B in terms of key performance metrics?
LM339ADG4 is the legacy A-grade version with ±5.5 mV max input offset and 1.3 µs typical response time. LM339B improves offset to ±0.37 mV typ and response to 1 µs, adds 2 kV HBM ESD, and extends absolute max supply to 38 V - all in the same SOIC-14 package, making LM339B a drop-in upgrade where tighter tolerances are needed.
Is LM339ADG4 suitable for automotive applications?
No, LM339ADG4 is not qualified for automotive use. It operates from –40°C to +85°C, but lacks AEC-Q100 qualification, extended temperature validation, or automotive-specific reliability testing. For automotive designs, TI recommends LM2901B-Q1 or LM339B-Q1, which are explicitly qualified to AEC-Q100 Grade 1.
LM339ADG4 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
LM339ADG4 FAQ
1.How can I place an order for LM339ADG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM339ADG4 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 LM339ADG4 reliable?
The price and inventory of LM339ADG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM339ADG4 is usually 5 days.
3.What payment methods are accepted for LM339ADG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM339ADG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM339ADG4?
LM339ADG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM339ADG4 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 LM339ADG4?
For technical support, including LM339ADG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM339ADG4 requirements.
6.How does Aetrix verify that LM339ADG4 is sourced from the original manufacturer or authorized distributors?
All LM339ADG4 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 LM339ADG4 meets industry standards.
7.What is the process for return or replacement of LM339ADG4?
All LM339ADG4 units undergo pre-shipment inspection (PSI). If there is an issue with LM339ADG4, 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 LM339ADG4 part is unused and in its original packaging.
Return procedure for LM339ADG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM339ADG4 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…
