My Inquiry
My Account
Texas Instruments LP339DRG4
- Part No.:
- LP339DRG4
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LP339DRG4.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,412
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LP339DRG4 from Texas Instruments is a low-power quadruple voltage comparator IC designed for single-supply operation in industrial and consumer signal-conditioning circuits. It features 60 µA typical supply current, ±2 mV input offset voltage, ±0.5 nA input offset current, rail-to-rail common-mode input range (including ground), and 30 mA output sink capability at VO = 2 V - enabling direct interface with CMOS logic in battery-powered or space-constrained systems.
For engineers reviewing the LP339DRG4 datasheet, LP339DRG4 pinout, LP339DRG4 application, or LP339DRG4 equivalent, key selection considerations include its 0°C to 70°C temperature rating, SOIC-14 package, open-collector outputs compatible with mixed-voltage logic, and functional equivalence to LM339 in standard-comparator roles where extended temperature range is not required.
Technical Context
The LP339DRG4 implements four independent p-n-p input stage comparators with ultra-low quiescent current independent of supply voltage (3 V to 30 V). Its input stage allows common-mode voltage down to ground, eliminating need for level-shifting in single-supply sensor interfaces.
Output stage uses bimodal Darlington/ground-emitter architecture: delivers 30 mA sink at VO ≥ 1.5 V (Darlington mode) and ~700 µA at VO ≤ 0.4 V (ground-emitter mode), supporting both high-current loads (e.g., relays, LEDs) and low-voltage logic interfacing without external pull-ups.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 30 V - supports wide-input industrial rails and battery-backed systems without regulation. |
| Quiescent Supply Current | 60 µA typ - enables multi-year operation on coin-cell batteries in always-on monitoring nodes. |
| Input Offset Voltage | ±2 mV max at 25°C - ensures accurate threshold detection in precision window or zero-crossing applications. |
| Input Offset Current | ±0.5 nA max at 25°C - minimizes error in high-impedance sensor interfaces (e.g., photodiode, thermistor bridges). |
| Output Sink Current | 30 mA at VO = 2 V - directly drives LEDs, small relays, or TTL/CMOS inputs without external transistors. |
| Common-Mode Input Range | 0 V to VCC − 2 V - accepts ground-referenced signals (e.g., thermocouple, resistive divider) without biasing networks. |
| Operating Temperature | 0°C to 70°C - qualified for commercial-grade embedded control, HVAC, and appliance applications. |
Pinout & Package
LP339DRG4 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 assembly and IPC-7351 land patterns.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 12, 13, 14 | Comparator Inputs & Outputs | Pins 1–2 (1IN−/1IN+), 4–5 (2IN−/2IN+), 8–9 (3IN−/3IN+), 12–13 (4IN−/4IN+) are differential inputs; Pins 1, 7, 8, 14 are open-collector outputs (1OUT, 2OUT, 3OUT, 4OUT). |
| 3, 11 | Power Supply | Pin 3 = VCC (positive supply); Pin 11 = GND (reference ground) - single-supply configuration only. |
| 7, 14 | Outputs | Uncommitted collector outputs require external pull-up resistors; multiple outputs can be wire-OR'd for dot-logic functions. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow Power Consumption | 60 µA typical ICC enables >10-year battery life in wireless sensor nodes using CR2032 cells. |
| Ground-Sensing Input Stage | Common-mode range includes 0 V - eliminates need for input biasing in single-supply analog front-ends. |
| Bimodal Output Architecture | Darlington mode (≥1.5 V) delivers 30 mA; ground-emitter mode (≤0.4 V) sustains 700 µA - supports mixed-load interfacing. |
| Reverse-Supply Protection | Withstands −36 V on VCC pin - prevents latch-up during board insertion or power sequencing faults. |
| CMOS/TTL Logic Compatibility | Output voltage swing matches MOS/CMOS input thresholds - simplifies interface to microcontrollers and FPGAs. |
Applications
| Temperature Monitoring | Power Supply Sequencing |
|---|---|
Use Scenario: Detecting overtemperature conditions in motor drivers or power converters using NTC thermistor voltage dividers. IC Role / Device Role / Timing Role: Quadruple comparator acts as independent threshold detector for multiple thermal zones, with each channel comparing sensor voltage against reference. Use Value: Enables discrete, low-cost thermal shutdown without MCU intervention - critical for Class A safety-critical subsystems. | Use Scenario: Validating correct power-up order across +5 V, +3.3 V, and +1.8 V rails in FPGA-based systems. IC Role / Device Role / Timing Role: Each comparator monitors one rail against a precision reference; outputs feed OR-gate to generate global "POWER_GOOD" signal. Use Value: Prevents FPGA configuration corruption by ensuring all supplies stabilize before reset release - no firmware dependency. |
| LED Status Indication | Window Comparator |
Use Scenario: Driving bi-color LED indicators showing system state (e.g., standby vs. active) in home appliances. IC Role / Device Role / Timing Role: Two comparators drive LED anodes via open-collector outputs; third comparator controls enable logic based on user input. Use Value: Eliminates need for discrete transistors or dedicated LED drivers - reduces BOM count and PCB area by 40%. | Use Scenario: Monitoring battery voltage within safe operating window (e.g., 3.0 V to 4.2 V) in portable medical devices. IC Role / Device Role / Timing Role: Two comparators form high/low thresholds; third generates "IN_WINDOW" signal; fourth provides hysteresis control. Use Value: Provides fail-safe battery management with <±2 mV threshold accuracy - meets IEC 62304 Class C requirements. |
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 industrial temp range. | Supports wider ambient environments (e.g., outdoor kiosks, automotive cabins) where LP339DRG4's 0°C–70°C range is insufficient. | Select LM339DR when extended temperature qualification is required; otherwise LP339DRG4 remains cost-optimized for commercial-grade designs. |
| LP2901DR | Same SOIC-14 package and pinout; rated for −40°C to 85°C; input offset voltage ±5 mV (vs. ±2 mV for LP339DRG4). | Valid for automotive and industrial control where cold-start operation below 0°C is mandatory, accepting minor offset trade-off. | Choose LP2901DR for AEC-Q100-qualified systems; LP339DRG4 is preferred for cost-sensitive commercial products with no sub-zero requirement. |
Compared with LM339DR and LP2901DR, the LP339DRG4 offers the tightest input offset voltage (±2 mV) among the three while maintaining lowest unit cost - making it optimal for precision threshold detection in commercial temperature environments where extended range adds unnecessary expense.
Availability
LP339DRG4 is available at Aetrix Electronics and suitable for industrial control panels, consumer appliance logic boards, and battery-powered sensor nodes requiring stable component supply and long-term obsolescence management.
Supply support for LP339DRG4 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 - serving industrial, automotive, and consumer markets since 1930.
The LP339DRG4 belongs to TI's legacy low-power comparator family, engineered for cost-effective, reliable signal comparison in resource-constrained systems where ultra-low quiescent current and ground-sensing capability are essential.
FAQ
What is the operating temperature range specified for the LP339DRG4?
The LP339DRG4 is characterized for operation from 0°C to 70°C. This commercial-grade temperature range is documented in the official Texas Instruments datasheet SLCS004B and applies specifically to the LP339 variant - distinct from the LP2901 (−40°C to 85°C) and LP239 (−25°C to 85°C). The LP339DRG4's thermal specification makes it suitable for indoor consumer electronics and industrial equipment operating in climate-controlled environments.
Is the LP339DRG4 pin-compatible with the LM339?
Yes, the LP339DRG4 is pin-for-pin compatible with the LM339, as confirmed in the TI datasheet SLCS004B which states "Pin-for-Pin Compatible With LM239, LM339, LM2901". Both devices use the same SOIC-14 (D) package footprint and identical pin assignments for VCC, GND, inputs, and open-collector outputs - enabling drop-in replacement in existing LM339 designs without layout changes.
Does the LP339DRG4 support dual-supply operation?
The LP339DRG4 is designed primarily for single-supply operation, but split-supply operation is possible per the datasheet: "Operation from split power supplies also is possible". However, its input common-mode range is specified relative to ground (0 V to VCC − 2 V), and performance parameters like input offset voltage and supply current are guaranteed only under single-supply conditions. For robust dual-supply use, TI recommends the LM339 or LP2901 variants with broader characterization.
What is the maximum output sink current of the LP339DRG4 and at what voltage is it specified?
The LP339DRG4 delivers up to 30 mA output sink current at VO = 2 V, as stated in the "Key Specifications" section of the SLCS004B datasheet. This value reflects operation in the Darlington mode of its bimodal output stage - activated when output voltage remains above ~1.5 V. At lower voltages (e.g., VO = 0.4 V), sink current drops to ~700 µA due to transition into ground-emitter mode.
Why is the LP339DRG4 marked as obsolete in TI's packaging addendum?
The LP339DRG4 is listed as obsolete in TI's Package Option Addendum because it is no longer in active production or supported for new designs - though existing inventory may still be available through authorized distributors. TI recommends migration to active alternatives such as LP339DR (same specs, active status) or LP2901DR (wider temperature range). The LP339DRG4 remains functionally identical to LP339DR but lacks ongoing manufacturing commitment.
LP339DRG4 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:
- 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
LP339DRG4 FAQ
1.How can I place an order for LP339DRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP339DRG4 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 LP339DRG4 reliable?
The price and inventory of LP339DRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP339DRG4 is usually 5 days.
3.What payment methods are accepted for LP339DRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP339DRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP339DRG4?
LP339DRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP339DRG4 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 LP339DRG4?
For technical support, including LP339DRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP339DRG4 requirements.
6.How does Aetrix verify that LP339DRG4 is sourced from the original manufacturer or authorized distributors?
All LP339DRG4 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 LP339DRG4 meets industry standards.
7.What is the process for return or replacement of LP339DRG4?
All LP339DRG4 units undergo pre-shipment inspection (PSI). If there is an issue with LP339DRG4, 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 LP339DRG4 part is unused and in its original packaging.
Return procedure for LP339DRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LP339DRG4 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
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
