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Texas Instruments LM339ANS
- Part No.:
- LM339ANS
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- -
- Datasheet:
-
LM339ANS.pdf
- Description:
- QUAD COMPARATOR
- Quantity:
- Payment:
- Shipping:
Inventory:9,050
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Product details
Overview
LM339ANS from Texas Instruments is a quad open-collector differential voltage comparator IC designed for single-supply operation (2 V to 36 V) in industrial control, power supply monitoring, and level-detection circuits. It delivers 0.8 mA typical supply current, 2 mV typical input offset voltage, 25 nA typical input bias current, and supports common-mode input down to ground - enabling direct sensing of 0 V referenced signals.
For engineers reviewing the LM339ANS datasheet, LM339ANS pinout, LM339ANS application, or LM339ANS equivalent, key selection criteria include its 0°C to 70°C operating temperature range, NS package (14-pin plastic small-outline), open-collector output compatibility with TTL/MOS/CMOS, and verified wired-AND capability across four independent comparators.
Technical Context
The LM339ANS implements four independent high-gain comparators with internal current-regulated input stages and open-collector NPN output transistors. Its input stage operates with rail-to-rail common-mode range down to ground and ±36 V differential input tolerance, while maintaining low input bias and offset currents across temperature.
Each comparator features a 200 V/mV large-signal differential voltage amplification at 25°C and achieves 0.3 µs typical propagation delay for TTL-level transitions under 15 pF load, enabled by optimized internal current sourcing and saturation control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V - supports wide-input industrial and automotive auxiliary rails without external regulation. |
| Input Offset Voltage (Typ) | 2 mV - enables accurate threshold detection within ±10 mV windows at room temperature. |
| Input Bias Current (Typ) | 25 nA - minimizes loading error on high-impedance sensor or divider networks. |
| Output Type | Open-collector - allows wired-AND logic, level translation, and direct interface to 3.3 V/5 V/12 V loads. |
| Operating Temperature | 0°C to 70°C - qualified for commercial-grade embedded systems and consumer electronics applications. |
| Supply Current (Typ) | 0.8 mA - stable across full voltage range, simplifying power budgeting in battery-backed or energy-sensitive designs. |
| Common-Mode Input Range | Includes ground (0 V) - permits direct comparison of signals referenced to system ground without level-shifting. |
Pinout & Package
LM339ANS is housed in a 14-pin plastic small-outline (NS) package with standard SOIC footprint and gull-wing leads. Thermal resistance θJA is 76°C/W, supporting up to 880 mW dissipation at TA ≤ 25°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 8, 9, 10, 12, 13, 14 | Comparator Inputs & Outputs | Pins 1–2 (IN+, IN−), 4–5 (IN+, IN−), 8–9 (IN+, IN−), 12–13 (IN+, IN−); Pins 3, 6, 11, 14 are open-collector outputs (OUT1–OUT4). |
| 7 | GND | Ground reference for all comparators and internal bias circuitry. |
| 14 | VCC | Positive supply terminal - powers all four comparators and output transistors. |
Key Features
| Feature | Design Value |
|---|---|
| Single- or dual-supply operation | Operates from 2 V to 36 V single supply or ±1 V to ±18 V dual supply - eliminates need for split-rail generation in many systems. |
| Input common-mode range includes ground | Enables direct comparison of 0 V–referenced sensors (e.g., thermistors, current shunts) without external level shifters. |
| Wired-AND output capability | Multiple LM339ANS outputs can be tied together to implement logic functions (e.g., OR/NOR) without external diodes or resistors. |
| Differential input voltage tolerance | ±36 V - withstands transient overvoltage events exceeding supply rails, improving robustness in noisy environments. |
| Low input offset current (3 nA typ) | Maintains accuracy in high-impedance feedback or reference paths where leakage would otherwise cause drift. |
Applications
| Power Supply Monitoring | Industrial Threshold Detection |
|---|---|
|
Use Scenario: Detect undervoltage/overvoltage conditions on 12 V or 24 V DC power rails in PLC I/O modules. IC Role / Device Role / Timing Role: Quad comparator monitors multiple rail thresholds simultaneously using resistor-divider references; outputs drive LED indicators or MCU GPIOs via pull-up resistors. Use Value: Enables fail-safe shutdown or alarm activation with <2 mV offset-induced error, ensuring reliable trip points across 0°C–70°C ambient. |
Use Scenario: Monitor temperature, pressure, or flow sensor outputs against programmable setpoints in HVAC controllers. IC Role / Device Role / Timing Role: Each comparator compares one analog sensor signal to a fixed reference voltage; open-collector outputs interface directly to microcontroller interrupt pins. Use Value: Ground-referenced inputs eliminate level-shifting components; 25 nA input bias prevents loading errors on high-Z sensor bridges. |
| Motor Control Feedback | Battery Management System |
|
Use Scenario: Sense zero-crossing or overcurrent in H-bridge motor drivers using current-sense amplifier outputs. IC Role / Device Role / Timing Role: Comparator detects polarity reversal or current limit breach; fast 0.3 µs response ensures timely fault latching before MOSFET damage occurs. Use Value: Sub-microsecond propagation delay and ±36 V differential input tolerance allow safe integration into high-side sensing paths with minimal protection circuitry. |
Use Scenario: Implement cell voltage balancing enable/disable logic and charge termination in 3S Li-ion packs. IC Role / Device Role / Timing Role: Four comparators monitor individual cell voltages against upper/lower thresholds; wired-AND outputs generate unified fault flag for BMS controller. Use Value: Open-collector outputs simplify multi-cell fault aggregation; 0.8 mA supply current minimizes quiescent drain on backup batteries. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad differential comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339N | Same electrical specs but in 14-pin PDIP package; θJA = 80°C/W vs. 76°C/W for NS package. | Preferred for through-hole prototyping or legacy board rework; less suitable for high-density SMT layouts. | Select LM339N when manual soldering, breadboarding, or socket-based testing is required. |
| LM2901DR | Wider –40°C to 125°C temp range; higher 7 mV max VIO at 25°C vs. 5 mV for LM339ANS. | Required for automotive under-hood or industrial outdoor deployments; trades precision for extended thermal coverage. | Choose LM2901DR only when operating beyond 70°C ambient or requiring AEC-Q100 alignment. |
Compared with LM339N and LM2901DR, the LM339ANS offers optimal balance of commercial-temperature performance, SOIC packaging for automated assembly, and proven reliability in cost-sensitive industrial controls - making it the preferred choice for volume production where 0°C–70°C operation suffices.
Availability
LM339ANS is available at Aetrix Electronics and suitable for power supply monitoring, industrial threshold detection, motor control feedback, and battery management systems requiring stable component supply and long-term manufacturability.
Supply support for LM339ANS 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, embedded processing, and digital signal technologies with over 50 years of innovation in precision analog ICs.
The LM339 family was engineered for general-purpose voltage comparison in cost-sensitive commercial systems, emphasizing wide supply range, ground-sensing capability, and interoperability with legacy TTL/CMOS logic families.
FAQ
What is the maximum supply voltage rating for LM339ANS?
The LM339ANS has an absolute maximum supply voltage (VCC) of 36 V. Operation above this risks permanent device damage. For reliable long-term use, TI specifies recommended operating conditions up to 30 V - consistent with LM339-series data sheet limits and validated across temperature ranges. Always observe derating curves in the dissipation rating table when operating near maximum ratings.
Does LM339ANS support dual-supply operation?
Yes, LM339ANS supports dual-supply operation provided the total supply difference is between 2 V and 36 V, and the positive rail (VCC) remains at least 1.5 V more positive than the most negative input common-mode voltage. This configuration enables bipolar signal comparison while retaining the same input offset and propagation characteristics as single-supply mode.
Can LM339ANS outputs be directly connected to 3.3 V logic inputs?
Yes - the open-collector outputs of LM339ANS are compatible with 3.3 V logic when used with an appropriate external pull-up resistor to 3.3 V. The output transistor's saturation voltage remains ≤400 mV at 4 mA sink current, ensuring valid LOW-level signaling. No level-shifter IC is required for interfacing with 3.3 V microcontrollers or FPGAs.
What is the input common-mode voltage range of LM339ANS?
The LM339ANS features a common-mode input voltage range that includes ground (0 V) and extends up to VCC − 1.5 V at 25°C, or VCC − 2 V across the full 0°C to 70°C operating range. This allows direct comparison of signals referenced to system ground - such as thermistor dividers or current-sense amplifier outputs - without external level-shifting circuitry.
Is LM339ANS pin-compatible with other members of the LM339 family?
Yes - LM339ANS shares identical pinout and electrical behavior with LM339D, LM339N, LM339PWR, and LM339DBR across all 14 pins. Differences are limited to package type (NS vs. D/N/PW/DB), thermal characteristics, and temperature grading - not pin function or connectivity. PCB layout can be reused across these variants with only footprint adaptation.
LM339ANS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- -
- Series:
- *
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- -
- Number of Elements:
- -
- Output Type:
- -
- Voltage - Supply, Single/Dual (±):
- -
- :
- -
- Voltage - Input Offset (Max):
- -
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- -
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
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- :
- -
LM339ANS FAQ
1.How can I place an order for LM339ANS through Aetrix?
Please submit a Request for Quotation (RFQ) for LM339ANS 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 LM339ANS reliable?
The price and inventory of LM339ANS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM339ANS is usually 5 days.
3.What payment methods are accepted for LM339ANS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM339ANS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM339ANS?
LM339ANS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM339ANS 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 LM339ANS?
For technical support, including LM339ANS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM339ANS requirements.
6.How does Aetrix verify that LM339ANS is sourced from the original manufacturer or authorized distributors?
All LM339ANS 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 LM339ANS meets industry standards.
7.What is the process for return or replacement of LM339ANS?
All LM339ANS units undergo pre-shipment inspection (PSI). If there is an issue with LM339ANS, 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 LM339ANS part is unused and in its original packaging.
Return procedure for LM339ANS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM339ANS 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
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