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Texas Instruments LM339ADRE4
- Part No.:
- LM339ADRE4
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM339ADRE4.pdf
- Description:
- IC COMPARATOR 4 DIFF 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,890
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Product details
Overview
LM339ADRE4 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, and 1 µs propagation delay. It operates in industrial temperature range (–40°C to +85°C) and drives TTL, MOS, and CMOS loads - widely used in server PSU overvoltage protection circuits.
For engineers reviewing the LM339ADRE4 datasheet, LM339ADRE4 pinout, LM339ADRE4 application, or LM339ADRE4 equivalent, key selection criteria include input common-mode range extending to ground, ±38 V differential input capability, open-collector output compatibility, and B-version upgrade path for legacy LM339 designs requiring improved ESD (2 kV HBM) and tighter offset performance.
Technical Context
The LM339ADRE4 implements four independent voltage comparators with rail-to-rail input capability down to ground and differential input tolerance up to ±38 V. Its open-collector outputs support wired-OR logic and flexible pull-up configurations, enabling direct interface with 3.3 V or 5 V logic families without level-shifting.
Internally, it uses bipolar process technology optimized for low input bias current (3.5 nA typ), low supply current (0.8–1.2 mA total), and fast response (1 µs typ at 5 mV overdrive). The device maintains stable operation across wide supply (2–36 V) and temperature (–40°C to +85°C) ranges without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V - supports wide-input industrial and telecom power rails without regulation |
| Input Offset Voltage (max) | ±5.5 mV over temperature - enables accurate threshold detection in precision sensing |
| Quiescent Current (total) | 0.8–1.2 mA at 5 V - allows low-power system monitoring in always-on applications |
| Propagation Delay | 1 µs (typ) at 5 mV overdrive - suitable for real-time fault detection in UPS and motor control |
| Input Bias Current (typ) | 3.5 nA - minimizes loading on high-impedance sensor sources like thermistors or photodiodes |
| Differential Input Voltage | ±38 V - permits direct comparison of signals referenced to different supply domains |
| ESD Rating (HBM) | 2000 V - meets industrial handling requirements without additional protection circuitry |
Pinout & Package
LM339ADRE4 is housed in a 14-pin SOIC (D) package measuring 8.70 mm × 3.90 mm, with gull-wing leads and standard JEDEC MS-012AC footprint. Thermal resistance RθJA = 111.2°C/W ensures adequate self-heating margin under full-load conditions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (2IN–) | Negative input, comparator 2 | Accepts reference or sensed signal below positive input; common-mode range includes ground |
| 2 (2IN+) | Positive input, comparator 2 | Accepts threshold or feedback signal; supports inputs up to VCC – 2 V |
| 3 (1IN–) | Negative input, comparator 1 | Used for inverting configuration or differential sensing; tolerant of negative transients ≤ –0.3 V |
| 4 (1IN+) | Positive input, comparator 1 | Primary signal input for comparator 1; paired with Pin 3 for differential mode |
| 5 (VCC) | Positive supply | Single supply connection; accepts 2–36 V DC; decoupling capacitor recommended at pin |
| 6 (2OUT) | Output, comparator 2 | Open-collector output - requires external pull-up to define logic HIGH level |
| 7 (1OUT) | Output, comparator 1 | Wired-OR capable; sinks up to 21 mA at 1.5 V saturation - drives LEDs or logic gates directly |
| 8 (4IN–) | Negative input, comparator 4 | Fourth channel input; identical electrical behavior to Pins 1 and 3 |
| 9 (3IN+) | Positive input, comparator 3 | Third channel positive input; supports same common-mode and overvoltage specs as other inputs |
| 10 (4IN+) | Positive input, comparator 4 | Enables independent thresholding for four separate system conditions (e.g., OV, UV, OT, OT2) |
| 11 (GND) | Negative supply / reference | System ground return; must be low-impedance to minimize noise coupling into sensitive inputs |
| 12 (4OUT) | Output, comparator 4 | Final comparator output; compatible with 3.3 V or 5 V logic families via appropriate pull-up resistor |
| 13 (3OUT) | Output, comparator 3 | Supports parallel-wired alarm outputs; shared pull-up simplifies multi-channel status indication |
| 14 (3IN–) | Negative input, comparator 3 | Completes fourth comparator pair; electrically identical to Pins 1, 3, and 8 |
Key Features
| Feature | Design Value |
|---|---|
| Ground-sensing input stage | Common-mode range includes 0 V - enables direct interface with sensors referenced to system ground |
| High-voltage differential tolerance | ±38 V input differential - eliminates need for external attenuators when comparing signals across isolated domains |
| Low quiescent current | 200 µA per comparator - reduces standby power in battery-backed or energy-sensitive systems |
| Fast propagation delay | 1 µs response time - meets timing requirements for real-time overvoltage lockout in server PSUs |
| Robust ESD protection | 2 kV HBM rating - improves manufacturing yield and field reliability in unshielded industrial environments |
| Open-collector output architecture | Wired-OR capability - simplifies multi-comparator alarm aggregation without additional logic gates |
Applications
| Server Power Supply Monitoring | Vacuum Robot Safety Interlock |
|---|---|
Use Scenario: Real-time monitoring of +12 V, +5 V, +3.3 V, and –12 V rails in redundant server PSUs. IC Role / Device Role / Timing Role: Quad comparator performs simultaneous undervoltage/overvoltage detection with independent thresholds per rail. Use Value: Enables sub-millisecond fault response using 1 µs propagation delay and open-collector outputs tied to system reset controller. |
Use Scenario: Verifying vacuum chamber pressure, motor temperature, emergency stop status, and door interlock before motion initiation. IC Role / Device Role / Timing Role: Four independent comparators validate safety-critical analog thresholds prior to actuator enable. Use Value: Ground-referenced inputs simplify connection to pressure transducers and thermistors; ±38 V tolerance accommodates floating sensor supplies. |
| Single-Phase UPS Battery Management | Cordless Power Tool Motor Control |
Use Scenario: Detecting battery cell imbalance, charger overcurrent, AC input loss, and inverter overtemperature in offline UPS units. IC Role / Device Role / Timing Role: Comparator array triggers staged shutdown sequences based on priority-ranked fault conditions. Use Value: Low 3.5 nA input bias current prevents measurement error in high-impedance voltage divider networks used for battery voltage sensing. |
Use Scenario: Monitoring motor winding temperature, battery pack voltage, trigger switch state, and brush wear indicators in cordless drills and saws. IC Role / Device Role / Timing Role: Quad comparator provides discrete-level alerts for thermal cutoff, low-battery warning, stall detection, and end-of-life signaling. Use Value: 2–36 V supply range matches Li-ion battery stack voltages (10–30 V); open-collector outputs interface directly with MCU GPIOs or LED drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339BDR | B-version with ±0.37 mV offset (vs. ±5.5 mV max for LM339ADRE4), 2 kV HBM ESD, extended 38 V abs max rating | Drop-in replacement for LM339ADRE4 in new designs requiring tighter offset and higher ruggedness | Select LM339BDR when upgrading legacy LM339-based systems needing improved accuracy and ESD immunity |
| LM2901DR | Same pinout; wider temp range (–40°C to +125°C); higher max offset (±15 mV); 32 V max supply (vs. 36 V) | Preferred for automotive or extended-temperature industrial environments where ambient exceeds 85°C | Choose LM2901DR only if operating temperature exceeds +85°C; otherwise LM339ADRE4 offers better offset and supply margin |
Compared with LM339BDR and LM2901DR, LM339ADRE4 delivers optimal balance of industrial temperature compliance, 36 V supply headroom, and proven design-in stability - making it the preferred choice for server PSU, factory automation, and UPS applications where long-term supply continuity and known qualification history are critical.
Availability
LM339ADRE4 is available at Aetrix Electronics and suitable for server PSU monitoring, vacuum robot safety interlocks, and single-phase UPS battery management requiring stable component supply across multi-year production cycles.
Supply support for LM339ADRE4 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 experience in precision analog ICs and industrial-grade components.
LM339ADRE4 belongs to TI's industry-standard quad comparator family, engineered for robust performance in power management, safety-critical monitoring, and industrial control systems where reliability and long-term availability are essential.
FAQ
What is the maximum supply voltage rating for LM339ADRE4?
The absolute maximum supply voltage for LM339ADRE4 is 38 V, with recommended operating range from 2 V to 36 V. This 36 V upper limit allows direct use with 24 V industrial rails and 32 V telecom systems while maintaining 2 V margin below absolute maximum - ensuring long-term reliability under transient overvoltage conditions. LM339ADRE4 maintains full functionality across this entire range without derating.
Does LM339ADRE4 support ground-referenced input signals?
Yes, LM339ADRE4 features a common-mode input voltage range that includes ground (0 V), allowing direct connection of sensors or signal sources referenced to system ground. Its inputs tolerate voltages from V– (GND) up to VCC – 2 V, and differential inputs can swing ±38 V - making it ideal for applications like battery voltage monitoring and motor current sensing where one side of the signal is grounded.
What output configuration does LM339ADRE4 use, and how should it be interfaced?
LM339ADRE4 uses open-collector outputs requiring external pull-up resistors to define the logic HIGH level. Each output (Pins 1, 7, 13, 12) sinks current when active and floats when inactive, enabling wired-OR connections for alarm aggregation. Pull-up values are selected based on load (e.g., 4.7 kΩ for 5 V TTL, 10 kΩ for 3.3 V CMOS), and the outputs drive standard logic families without level shifters - a key feature of LM339ADRE4.
How does LM339ADRE4 compare to LM339B in terms of input offset voltage?
LM339ADRE4 has a maximum input offset voltage of ±5.5 mV over temperature (–40°C to +85°C), while LM339B improves this to ±5.5 mV max with ±0.37 mV typical. Both share the same pinout and package, but LM339B's tighter offset specification makes it preferable for precision thresholding. LM339ADRE4 remains suitable for general-purpose monitoring where ±5.5 mV accuracy meets system requirements - a verified performance point for LM339ADRE4.
Is LM339ADRE4 qualified for automotive applications?
No, LM339ADRE4 is not AEC-Q100 qualified and is rated for industrial temperature range (–40°C to +85°C), not automotive (–40°C to +125°C). For automotive use, TI offers LM2901B-Q1 (AEC-Q100 Grade 1) or LM2901DR - both pin-compatible alternatives with extended temperature and qualification. LM339ADRE4 is intended for industrial, computing, and telecom infrastructure applications where its specifications and long-term supply chain are validated.
LM339ADRE4 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
- :
- 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
LM339ADRE4 FAQ
1.How can I place an order for LM339ADRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM339ADRE4 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 LM339ADRE4 reliable?
The price and inventory of LM339ADRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM339ADRE4 is usually 5 days.
3.What payment methods are accepted for LM339ADRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM339ADRE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM339ADRE4?
LM339ADRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM339ADRE4 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 LM339ADRE4?
For technical support, including LM339ADRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM339ADRE4 requirements.
6.How does Aetrix verify that LM339ADRE4 is sourced from the original manufacturer or authorized distributors?
All LM339ADRE4 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 LM339ADRE4 meets industry standards.
7.What is the process for return or replacement of LM339ADRE4?
All LM339ADRE4 units undergo pre-shipment inspection (PSI). If there is an issue with LM339ADRE4, 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 LM339ADRE4 part is unused and in its original packaging.
Return procedure for LM339ADRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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