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Texas Instruments LP339MX/NOPB
- Part No.:
- LP339MX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LP339MX/NOPB.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:12,788
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Product details
Overview
LP339MX/NOPB from Texas Instruments (formerly National Semiconductor) is an ultra-low power quad voltage comparator designed for single-supply operation with 60 µA typical supply current, ±2 mV input offset voltage, and rail-to-rail input common-mode range including ground. It interfaces directly with CMOS logic and drives loads up to 30 mA at VO = 2 VDC, making it ideal for battery-powered limit detection and analog-to-digital conversion circuits.
For engineers reviewing the LP339MX/NOPB datasheet, LP339MX/NOPB pinout, LP339MX/NOPB application, or LP339MX/NOPB equivalent, key selection considerations include its bi-modal output sink capability (30 mA Darlington mode / 700 µA grounded-emitter mode), input bias current of 3 nA, compatibility with 2–30 VDC supply range, and SOIC-14 package with industry-standard LM339 pinout.
Technical Context
The LP339MX/NOPB employs a PNP-input stage enabling ground-sensing operation and independent supply current over 2–30 VDC. Its output features a dual-mode transistor structure-Q1–Q2 Darlington configuration for high-current sinking above ~1.5 VDC, and Q3-bypassed grounded-emitter mode below ~0.8 VDC-enabling both LED/relay drive and low-voltage logic interfacing.
Input common-mode range spans 0 V to V+−1.5 V (at 25°C), supporting single-supply zero-crossing detection and transducer amplification. The device tolerates differential input voltages up to ±36 VDC and includes reverse-voltage protection on supply inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 60 µA typical - enables multi-year battery life in portable sensors and IoT edge nodes |
| Input Offset Voltage | ±2 mV - supports accurate threshold detection in precision level comparators |
| Input Bias Current | 3 nA - minimizes loading on high-impedance sources like thermistors or photodiodes |
| Output Sink Current | 30 mA at VO = 2 VDC - directly drives LEDs, small relays, or MOSFET gates without external buffers |
| Common-Mode Range | Includes ground (0 V) - allows direct sensing of signals referenced to system ground under single supply |
| Response Time | 1.3 µs (100 mV step, 5 mV overdrive) - suitable for pulse generation and time-delay circuits |
| Supply Voltage Range | 2–30 VDC or ±18 VDC - supports wide industrial and automotive auxiliary rail applications |
Pinout & Package
LP339MX/NOPB is housed in a 14-pin SOIC (D) package per JEDEC MS-012, with 1.27 mm pitch, 8.65 mm × 3.91 mm body, and RoHS-compliant matte tin (Sn) lead finish. Pin 1 orientation follows quadrant Q1 per tape-and-reel standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 5, 6 | Inverting Input (−) | Accepts reference or signal input; common-mode range includes ground |
| 3, 4, 8, 9 | Non-inverting Input (+) | Accepts sensed signal; input bias current 3 nA minimizes source loading |
| 12, 13, 14, 1 | Output (open-collector) | Uncommitted collector - supports wired-OR, pull-up to any compatible voltage rail ≤36 V |
| 4 | V+ | Positive supply input; reverse-voltage protected; operates from 2–30 VDC |
| 3 | GND | Ground reference; all inputs and outputs referenced to this node |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low supply current | 60 µA typical - reduces thermal load and extends battery runtime in always-on monitoring systems |
| Bi-modal output stage | 30 mA sink at VO ≥1.5 VDC + 700 µA sink at VO ≤0.4 VDC - enables simultaneous high-drive and low-voltage logic compatibility |
| Ground-sensing input | Input common-mode range includes 0 V - eliminates need for level-shifting in single-supply sensor interfaces |
| CMOS logic compatibility | Output voltage swing compatible with 3.3 V/5 V CMOS inputs - simplifies interface to microcontrollers and FPGAs |
| LM339 pin-compatible | Identical pinout to industry-standard LM339 - allows drop-in replacement in legacy designs without PCB changes |
Applications
| Limit Detection in Portable Sensors | Analog-to-Digital Conversion |
|---|---|
|
Use Scenario: Monitoring battery voltage, temperature thresholds, or light levels in handheld medical devices or environmental loggers. IC Role / Device Role / Timing Role: Quad comparator performs simultaneous high/low/center-band window comparisons against fixed references. Use Value: 60 µA quiescent current enables >5-year operation on coin-cell batteries; ground-sensing inputs simplify resistive divider design. |
Use Scenario: Converting analog sensor outputs (e.g., pressure, humidity) into digital codes using flash or successive-approximation architectures. IC Role / Device Role / Timing Role: Provides parallel comparison of input voltage against multiple reference ladder steps. Use Value: 1.3 µs response time supports >500 kSPS conversion rates; ±2 mV offset ensures <1 LSB error in 8-bit systems. |
| Pulse & Time-Delay Generation | LED/Relay Driver Interface |
|
Use Scenario: Building monostable multivibrators, squarewave oscillators, or programmable delay timers in industrial control panels. IC Role / Device Role / Timing Role: Configured as hysteresis comparator with RC timing network to generate precise on/off intervals. Use Value: Bi-modal output delivers stable timing edges while sourcing sufficient current to charge/discharge timing capacitors rapidly. |
Use Scenario: Directly driving status LEDs, buzzer elements, or 5 V/12 V relay coils in PLC I/O modules or smart home hubs. IC Role / Device Role / Timing Role: Acts as level translator and current amplifier between low-power MCU GPIO and higher-power peripherals. Use Value: 30 mA sink capability eliminates external transistor stages; open-collector outputs support shared pull-up for OR logic functions. |
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 supply current (500 µA typical), ±9 mV max offset, no ground-sensing guarantee below 1.5 V | Less suitable for ultra-low-power battery systems; requires higher drive margin for same load | Preferred where cost sensitivity outweighs power budget constraints and ground-referenced inputs are not required |
| TLV339IPW | Lower supply current (1 µA), rail-to-rail input, but only 10 mA output sink and 0.1 µs response time | Better for nanowatt sensing, but insufficient for relay/LED drive without buffering | Optimal for sub-microwatt wake-up comparators; use LP339MX/NOPB when combined precision, drive strength, and speed are needed |
Compared with LM339DR and TLV339IPW, the LP339MX/NOPB uniquely balances ultra-low 60 µA supply current, 30 mA output drive, and guaranteed ground-sensing operation - making it the only option among the three capable of direct battery-powered relay control with sub-2 mV accuracy.
Availability
LP339MX/NOPB is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial sensor interfaces, and embedded timing circuits requiring stable component supply across long production lifecycles.
Supply support for LP339MX/NOPB 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 (TI) is a global semiconductor leader delivering analog and embedded processing solutions, with heritage in precision analog from National Semiconductor's acquisition in 2011.
The LP339MX/NOPB belongs to TI's legacy precision comparator portfolio, engineered for ultra-low-power, single-supply industrial and portable applications where ground-referenced sensing and robust output drive are essential.
FAQ
What is the maximum supply voltage rating for LP339MX/NOPB?
The LP339MX/NOPB has an absolute maximum supply voltage rating of 36 VDC (or ±18 VDC for split supplies). Operation beyond this risks permanent damage. For reliable long-term use, TI recommends staying within 30 VDC under normal conditions, as specified in the Electrical Characteristics table for supply current independence.
Does LP339MX/NOPB support true ground-referenced input operation?
Yes, the LP339MX/NOPB guarantees input common-mode voltage range down to 0 V (ground), even when powered from a single supply - a key differentiator from many comparators that require input bias above GND. This is confirmed in the General Description and Electrical Characteristics sections of the SNOSBE0A datasheet.
Can LP339MX/NOPB outputs be wired together for OR logic?
Yes, LP339MX/NOPB features open-collector outputs, allowing multiple outputs to be tied together with a single pull-up resistor to implement wired-OR logic. This is explicitly supported by the "Output Strobing" and "ORing the Outputs" application diagrams in the datasheet and leverages the uncommitted collector architecture.
What is the output sink current behavior of LP339MX/NOPB at low voltages?
The LP339MX/NOPB exhibits bi-modal output behavior: above ~1.5 VDC, it sinks up to 30 mA in Darlington mode; below ~0.4 VDC, it switches to grounded-emitter mode and sinks ~700 µA. This transition is smooth and documented in Figure 1 and the Application Hints section of SNOSBE0A.
Is LP339MX/NOPB pin-compatible with LM339?
Yes, LP339MX/NOPB uses the identical SOIC-14 pinout as the LM339, as stated in the "Advantages" section ("Pin-out identical to LM339") and confirmed in the Schematic and Connection Diagrams. This enables direct drop-in replacement in existing LM339-based designs without layout modification.
LP339MX/NOPB 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:
- CMOS, MOS, Open-Collector
- Voltage - Supply, Single/Dual (±):
- 2V ~ 36V, ±1V ~ 18V
- :
- 5mV @ 5V
- Voltage - Input Offset (Max):
- 0.025µA @ 5V
- Current - Input Bias (Max):
- 10mA @ 5V
- Current - Output (Typ):
- 100µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-SOIC
LP339MX/NOPB FAQ
1.How can I place an order for LP339MX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LP339MX/NOPB 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 LP339MX/NOPB reliable?
The price and inventory of LP339MX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP339MX/NOPB is usually 5 days.
3.What payment methods are accepted for LP339MX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP339MX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP339MX/NOPB?
LP339MX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP339MX/NOPB 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 LP339MX/NOPB?
For technical support, including LP339MX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP339MX/NOPB requirements.
6.How does Aetrix verify that LP339MX/NOPB is sourced from the original manufacturer or authorized distributors?
All LP339MX/NOPB 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 LP339MX/NOPB meets industry standards.
7.What is the process for return or replacement of LP339MX/NOPB?
All LP339MX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LP339MX/NOPB, 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 LP339MX/NOPB part is unused and in its original packaging.
Return procedure for LP339MX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LP339MX/NOPB Tags
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