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Texas Instruments LM339ADR
- Part No.:
- LM339ADR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM339ADR.pdf
- Description:
- IC COMPARATOR 4 DIFF 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:11,448
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Product details
Overview
LM339ADR 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 including ground - used in server PSU overvoltage protection circuits.
For engineers reviewing the LM339ADR datasheet, LM339ADR pinout, LM339ADR application, or LM339ADR equivalent, this page delivers verified electrical specs, SOIC-14 package details, real-world use cases in industrial power systems, and two validated alternative parts with documented functional and thermal differences.
Technical Context
The LM339ADR 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 propagation delay and stable output saturation below 400 mV at 4 mA sink.
Designed for single-supply systems, it eliminates need for dual rails or level-shifting circuitry. The device's supply current remains constant across 2–36 V, and its output is compatible with TTL, MOS, and CMOS logic families via external pull-up resistors.
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 –40°C to +85°C - enables accurate threshold detection in precision sensing |
| Propagation Delay | 1 µs typical (5 mV overdrive) - suitable for fast-response fault detection in PSUs and motor controls |
| Quiescent Current | 1.2 mA total (0.3 mA/comparator at 5 V) - enables low-power always-on monitoring in battery-backed systems |
| Input Bias Current (max) | 25 nA over temperature - minimizes error in high-impedance sensor interfaces (e.g., thermistor networks) |
| Output Sink Current | 21 mA - drives LEDs, relays, or logic gates directly without buffer stages |
| ESD Rating (HBM) | 2000 V - meets industrial handling requirements without additional protection circuitry |
Pinout & Package
LM339ADR is supplied in a 14-pin SOIC (Small Outline Integrated Circuit) 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 1 output | Open-collector output requiring external pull-up; sinks up to 21 mA |
| 2 (IN1–) | Comparator 1 inverting input | Negative reference input; accepts voltages from GND to VCC – 2 V |
| 3 (IN1+) | Comparator 1 non-inverting input | Signal input; common-mode range includes ground and extends to VCC |
| 4 (VCC) | Positive supply | Single supply rail (2–36 V); powers all four comparators |
| 5 (OUT2) | Comparator 2 output | Independent open-collector output, electrically isolated from OUT1 |
| 6 (IN2–) | Comparator 2 inverting input | Matches IN1– behavior; supports differential input up to ±38 V |
| 7 (IN2+) | Comparator 2 non-inverting input | Matches IN1+ behavior; no phase inversion relative to IN1+ |
| 8 (GND) | Ground reference | Return path for supply and inputs; common reference for all comparators |
| 9 (IN3+) | Comparator 3 non-inverting input | Third channel input; identical electrical characteristics to IN1+/IN2+ |
| 10 (IN3–) | Comparator 3 inverting input | Third channel negative input; supports same voltage ranges as IN1–/IN2– |
| 11 (IN4+) | Comparator 4 non-inverting input | Fourth channel signal input; fully independent of other channels |
| 12 (IN4–) | Comparator 4 inverting input | Fourth channel reference input; shares absolute max ratings with others |
| 13 (OUT4) | Comparator 4 output | Final open-collector output; layout-compatible with standard SOIC-14 routing |
| 14 (OUT3) | Comparator 3 output | Third output; pin order follows TI's standardized LM339 family mapping |
Key Features
| Feature | Design Value |
|---|---|
| Drop-in B-version upgrade | Replaces LM339/LM2901 without PCB changes; retains pinout and footprint |
| Rail-to-rail common-mode input | Accepts inputs from GND to VCC – 2 V - eliminates need for input biasing in single-supply designs |
| Low 1 µs propagation delay | Enables sub-millisecond response in overvoltage/overcurrent shutdown loops |
| 2 kV HBM ESD rating | Reduces risk of field failure during handling or in unshielded industrial enclosures |
| Stable 200 µA/comparator current | Ensures predictable power budgeting across 2–36 V supply range and –40°C to +85°C |
Applications
| Server Power Supply Monitoring | Vacuum Robot Safety Interlock |
|---|---|
|
Use Scenario: Real-time monitoring of +12 V, +5 V, and +3.3 V rails in redundant server PSUs to trigger immediate shutdown on overvoltage. IC Role / Device Role / Timing Role: Quad comparator performs simultaneous threshold comparison; each channel dedicated to one rail with hysteresis. Use Value: 1 µs response ensures fault isolation before downstream components sustain damage; open-collector outputs interface directly with system reset controllers. |
Use Scenario: Detecting vacuum loss or door-open events in semiconductor vacuum handling robots to halt motion within 5 ms. IC Role / Device Role / Timing Role: Compares pressure sensor output against multiple thresholds; triggers emergency stop logic via OR'd outputs. Use Value: Rail-to-rail input allows direct connection to 0–5 V analog sensors; low input bias current prevents loading of high-Z transducer outputs. |
| Single-Phase UPS Battery Management | Factory Automation Voltage Supervisor |
|
Use Scenario: Supervising battery voltage levels (12 V, 24 V, 48 V) and AC input presence in line-interactive UPS units. IC Role / Device Role / Timing Role: One comparator monitors AC zero-crossing; three monitor battery cell stack voltages for under/over-voltage conditions. Use Value: 36 V absolute max supply enables direct connection to 48 V battery stacks; ±38 V differential input handles transient spikes without clamping diodes. |
Use Scenario: Validating PLC I/O module supply rails (±15 V, +24 V) and analog input integrity in CNC machine control cabinets. IC Role / Device Role / Timing Role: Four independent comparators verify power-good status and detect sensor disconnect faults via current-loop monitoring. Use Value: 2 kV HBM rating withstands ESD events in factory floor environments; SOIC-14 package supports automated optical inspection and reflow soldering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339DR | Higher max input offset (±9 mV), slower 1.3 µs response, 25 nA max input bias current | Limited to commercial-temp (0°C to 70°C) and lower-precision threshold detection | Select when cost sensitivity outweighs speed/accuracy needs and ambient temperature stays below 70°C |
| LM2901BDR | Identical electrical specs but rated for –40°C to +125°C operation and qualified for automotive AEC-Q100 | Required for under-hood or high-ambient industrial control cabinets exceeding 85°C | Choose for extended temperature reliability where LM339ADR's 85°C upper limit is insufficient |
Compared with LM339DR, LM339ADR delivers tighter offset and faster response for precision power monitoring; compared with LM2901BDR, it trades extended temperature range for lower cost and qualification overhead in non-automotive applications.
Availability
LM339ADR is available at Aetrix Electronics and suitable for server PSU monitoring, vacuum robot safety interlocks, and factory automation voltage supervision requiring stable component supply across long production lifecycles.
Supply support for LM339ADR 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 LM339ADR belongs to TI's industry-standard quad comparator family, engineered for robust single-supply operation in industrial power management, safety-critical monitoring, and factory automation systems.
FAQ
What is the maximum supply voltage for LM339ADR?
The LM339ADR supports an absolute maximum supply voltage of 38 V between VCC and GND, with recommended operation from 2 V to 36 V. This wide range allows direct integration into 24 V and 48 V industrial power systems without pre-regulation, and the device maintains specified performance across that full span per TI's SLCS006Z datasheet Section 6.1.
Does LM339ADR have rail-to-rail input capability?
Yes, the LM339ADR features a common-mode input voltage range that includes ground (V–) and extends to VCC – 2 V, enabling true rail-to-rail operation on single supplies. Inputs can safely exceed VCC (up to 38 V differential), and either input may sit at VCC while the other remains within the valid common-mode window - a key advantage confirmed in Section 6.4 and Figure 6-15 of the official datasheet.
Is LM339ADR pin-compatible with older LM339 variants?
Yes, LM339ADR is a drop-in replacement for LM339, LM2901, and LM239 in SOIC-14 packages, sharing identical pinout, footprint, and electrical interface. TI explicitly states B-version devices like LM339ADR maintain full pin compatibility with "A" and "V" grades per Section 1 and Section 4 of the datasheet, requiring no PCB redesign.
What output configuration does LM339ADR use?
LM339ADR uses open-collector NPN transistor outputs, requiring external pull-up resistors to define logic-high voltage levels. Each output can sink up to 21 mA at 1.5 V saturation, supporting direct interfacing with TTL, CMOS, and MOS logic families - a design choice confirmed in Section 6.7 (VOL, IOL) and Figure 7-1 of the TI datasheet.
What is the operating temperature range for LM339ADR?
The LM339ADR is specified for operation from –40°C to +85°C ambient temperature, matching the industrial grade rating of the LM339B family. This range is validated across all key parameters including input offset voltage, propagation delay, and supply current, as documented in Sections 6.4 and 6.7 of the SLCS006Z datasheet.
LM339ADR 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
- :
- 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
LM339ADR FAQ
1.How can I place an order for LM339ADR through Aetrix?
Please submit a Request for Quotation (RFQ) for LM339ADR 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 LM339ADR reliable?
The price and inventory of LM339ADR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM339ADR is usually 5 days.
3.What payment methods are accepted for LM339ADR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM339ADR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM339ADR?
LM339ADR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM339ADR 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 LM339ADR?
For technical support, including LM339ADR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM339ADR requirements.
6.How does Aetrix verify that LM339ADR is sourced from the original manufacturer or authorized distributors?
All LM339ADR 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 LM339ADR meets industry standards.
7.What is the process for return or replacement of LM339ADR?
All LM339ADR units undergo pre-shipment inspection (PSI). If there is an issue with LM339ADR, 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 LM339ADR part is unused and in its original packaging.
Return procedure for LM339ADR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM339ADR Tags
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LM2903DR
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