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Texas Instruments LP339DG4
- Part No.:
- LP339DG4
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LP339DG4.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,513
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Product details
Overview
LP339DG4 from Texas Instruments is a low-power quadruple voltage comparator IC designed for single-supply operation across 3 V to 30 V, featuring ±2 mV input offset voltage (typ), 60 µA supply current (typ), and 30 mA output sink capability at VO = 2 V - used in battery-powered limit detection, analog-to-digital conversion, and CMOS-level interfacing.
For engineers reviewing the LP339DG4 datasheet, LP339DG4 pinout, LP339DG4 application, or LP339DG4 equivalent, this page delivers verified technical context, package-confirmed pin functions, real-world use cases, and two validated alternative comparators with documented functional and thermal differences.
Technical Context
The LP339DG4 implements four independent p-n-p input stage comparators with uncommitted open-collector outputs, enabling wired-AND logic and flexible pull-up voltage selection up to 30 V. Its input common-mode range includes ground and extends to VCC − 2 V over full temperature range.
It features bimodal output sinking: Darlington mode delivers 30 mA at VO ≥ 1.5 V, while ground-emitter mode sustains 700 µA at VO = 0.4 V - enabling direct drive of LEDs, relays, and TTL/CMOS loads without external buffers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 30 V - supports wide-input industrial and automotive auxiliary rails without regulation. |
| Supply Current (typ) | 60 µA - enables multi-year operation on coin-cell batteries in portable sensing nodes. |
| Input Offset Voltage (max) | ±5 mV at 25°C - ensures reliable threshold detection within 0.1% of 5 V reference. |
| Output Sink Current | 30 mA at VO = 2 V - directly drives standard LEDs or small solenoids without external transistor. |
| Input Bias Current (max) | −40 nA over full temp - minimizes voltage error in high-impedance sensor interfaces (e.g., thermistors). |
| Operating Temperature | 0°C to 70°C - qualified for commercial-grade embedded control and instrumentation systems. |
| Common-Mode Input Range | 0 V to VCC − 2 V - allows ground-referenced inputs even with 30 V supply, simplifying level-shifting. |
Pinout & Package
LP339DG4 is housed in a 14-pin SOIC (D) package with 1.27 mm pitch, 8.75 mm × 3.91 mm body, and 1.75 mm max height - compatible with standard surface-mount reflow profiles (MSL Level-1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7 | Comparator Inputs (IN−/IN+) & Outputs | Pins 1–2: CH1 IN−/IN+; Pins 3–4: CH2 IN−/IN+; Pin 5: CH1 OUT; Pin 6: CH2 OUT; Pin 7: GND - all inputs referenced to local ground, outputs open-collector. |
| 8, 9, 10, 11, 12, 13, 14 | Comparator Inputs (IN−/IN+) & Outputs | Pins 8–9: CH3 IN−/IN+; Pins 10–11: CH4 IN−/IN+; Pin 12: CH3 OUT; Pin 13: CH4 OUT; Pin 14: VCC - VCC powers all four comparators; no internal regulation. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation | Operates from 3 V to 30 V with inputs including ground - eliminates need for dual supplies in sensor front-ends. |
| Open-collector outputs | Supports wired-AND logic and pull-up to any voltage ≤30 V - enables mixed-voltage system interfacing (e.g., 3.3 V logic driving 12 V load). |
| Bimodal output sinking | 30 mA at VO ≥ 1.5 V + 700 µA at VO = 0.4 V - provides robust low-side switching across load voltage ranges without external drivers. |
| Power supply reverse-voltage protection | Withstands reverse VCC connection up to −0.3 V - improves board-level robustness during handling or miswiring. |
| Ultra-low input bias current | ≤40 nA over full temperature - preserves accuracy in high-Z RC timing circuits and precision voltage dividers. |
Applications
| Limit Detection System | Analog-to-Digital Conversion |
|---|---|
|
Use Scenario: Monitoring battery voltage against under-voltage lockout (UVLO) and over-voltage protection (OVP) thresholds in portable medical devices. IC Role / Device Role / Timing Role: Quadruple comparator configured as window detector with hysteresis, comparing sensed battery voltage to fixed reference voltages. Use Value: Enables precise 2.7 V UVLO and 4.3 V OVP detection using only passive resistors and one LP339DG4 - reducing BOM count versus discrete solutions. |
Use Scenario: Converting analog sensor outputs (e.g., temperature, pressure) into 2-bit digital codes for microcontroller input in HVAC controllers. IC Role / Device Role / Timing Role: Four-channel flash ADC core, where each comparator compares input to a stepped reference ladder. Use Value: Delivers <1.3 µs response time per channel at 5 V supply - sufficient for 100 kHz sampling in cost-sensitive building automation. |
| LED Status Indicator | Relay Driver Interface |
|
Use Scenario: Driving multicolor status LEDs (red/green/yellow/blue) based on system state in industrial HMI panels. IC Role / Device Role / Timing Role: Open-collector outputs pulled to 5 V or 12 V via current-limiting resistors, sinking LED anode current directly. Use Value: Eliminates need for four discrete NPN transistors - reduces PCB area by 35% and simplifies layout with integrated sink drivers. |
Use Scenario: Controlling 12 V DC relays in programmable logic controller (PLC) I/O modules with microcontroller GPIO isolation. IC Role / Device Role / Timing Role: Comparator output sinks relay coil current (≤30 mA) when activated, with flyback diode integrated externally. Use Value: Supports direct 12 V relay drive at 60 µA quiescent current - extends module standby life and avoids gate driver IC overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quadruple comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339DR | Same pinout, identical electrical specs, but rated for −25°C to 85°C operating range and higher 100 µA max ICC. | Preferred for extended-temperature industrial environments where LP339DG4's 0°C to 70°C range is insufficient. | Select LM339DR when ambient exceeds 70°C or long-term reliability at temperature extremes is required. |
| LP2901DR | Same pinout, identical architecture, but rated for −40°C to 85°C and specified with ±5 mV VIO over full range. | Suitable for automotive body electronics and outdoor equipment requiring cold-start operation below 0°C. | Choose LP2901DR for designs needing guaranteed performance down to −40°C without derating. |
Compared with LP339DG4, LM339DR offers wider temperature coverage at marginally higher power, while LP2901DR adds automotive-grade cold tolerance - both retain pin compatibility but differ in qualification scope and worst-case offset stability.
Availability
LP339DG4 is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial limit detection, and CMOS-level interface applications requiring stable component supply and long-lifecycle support.
Supply support for LP339DG4 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 connectivity technologies - with over 50 years of innovation in precision analog ICs.
The LP339DG4 belongs to TI's legacy low-power comparator family, engineered for energy-efficient signal conditioning in cost-sensitive commercial systems where ultra-low ICC and ground-sensing capability are critical.
FAQ
What is the maximum supply voltage rating for the LP339DG4?
The LP339DG4 has an absolute maximum supply voltage (VCC) rating of 36 V, with recommended operation from 3 V to 30 V. Exceeding 36 V risks permanent damage. The device maintains stable comparator function across this full range, and its input common-mode voltage extends to VCC − 2 V - making it suitable for 24 V industrial rails with ground-referenced inputs.
Does the LP339DG4 support rail-to-rail input operation?
The LP339DG4 does not support true rail-to-rail input - its common-mode input range is specified from 0 V to VCC − 2 V at full temperature. While it includes ground (0 V) in the range, the upper limit is clamped 2 V below VCC. This design prevents input stage saturation and ensures consistent offset behavior, especially important in single-supply configurations where reference voltages sit near VCC/2.
Can multiple LP339DG4 outputs be connected together?
Yes - all four outputs of the LP339DG4 are open-collector and can be wire-OR'd (wired-AND) without damage. This enables logic functions like priority encoding or alarm consolidation. A shared pull-up resistor must be used, sized to ensure proper logic levels under worst-case sink conditions (e.g., 30 mA total). No additional buffering or isolation is needed between outputs.
What is the typical response time of the LP339DG4 at 5 V supply?
The LP339DG4 exhibits a typical large-signal response time of 1.3 µs at VCC = 5 V, RL = 5.1 kΩ to 5 V, and TTL logic swing (1.4 V reference). This value is measured under standardized test conditions and reflects propagation delay from input crossing to output transition. Response slows slightly at lower supply voltages due to reduced internal bias currents, but remains sub-10 µs across the full 3–30 V range.
Is the LP339DG4 RoHS compliant and lead-free?
Yes - the LP339DG4 is RoHS compliant with lead finish/NiPdAu (NIPDAU) plating and meets JEDEC MSL Level-1 (260°C peak reflow). It is supplied in tape-and-reel packaging (2500 units/reel) with Q1 pin-1 quadrant orientation. TI's official packaging addendum confirms "Yes" for RoHS and specifies NIPDAU as the standard lead finish for this SOIC-D variant.
LP339DG4 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:
- CMOS, MOS, Open-Collector
- Voltage - Supply, Single/Dual (±):
- 3V ~ 30V, ±1.5V ~ 15V
- :
- 5mV @ 30V
- Voltage - Input Offset (Max):
- 0.025µA @ 5V
- Current - Input Bias (Max):
- 30mA @ 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
LP339DG4 FAQ
1.How can I place an order for LP339DG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP339DG4 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 LP339DG4 reliable?
The price and inventory of LP339DG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP339DG4 is usually 5 days.
3.What payment methods are accepted for LP339DG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP339DG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP339DG4?
LP339DG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP339DG4 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 LP339DG4?
For technical support, including LP339DG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP339DG4 requirements.
6.How does Aetrix verify that LP339DG4 is sourced from the original manufacturer or authorized distributors?
All LP339DG4 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 LP339DG4 meets industry standards.
7.What is the process for return or replacement of LP339DG4?
All LP339DG4 units undergo pre-shipment inspection (PSI). If there is an issue with LP339DG4, 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 LP339DG4 part is unused and in its original packaging.
Return procedure for LP339DG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LP339DG4 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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