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Texas Instruments LP339DE4
- Part No.:
- LP339DE4
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LP339DE4.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,495
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Product details
Overview
LP339DE4 from Texas Instruments is a low-power quadruple voltage comparator IC designed for single-supply operation in industrial and consumer systems. 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 down to ground, and 30 mA output sink capability at VO = 2 V - enabling direct interface with CMOS logic in battery-powered or space-constrained applications.
For engineers reviewing the LP339DE4 datasheet, LP339DE4 pinout, LP339DE4 application, or LP339DE4 equivalent, this page delivers verified technical context, package-validated pin functions, real-world use cases, and two confirmed alternative comparators - all aligned to TI's SLCS004B specification and production-grade SOIC-D packaging.
Technical Context
The LP339DE4 integrates four independent p-n-p input stage comparators with uncommitted open-collector outputs, supporting dot-logic wiring and flexible pull-up voltage selection up to 30 V. Its bimodal output architecture delivers 30 mA sink current above VO = 1.5 V (Darlington mode) and ~700 µA below VO = 0.4 V (ground-emitter mode), maintaining ultra-low 60 µA quiescent current across 3 V–30 V supply range.
Input bias current remains stable at −2.5 nA (typ) and common-mode input range extends from ground to VCC − 2 V over full temperature range (0°C to 70°C), ensuring reliable threshold detection in analog-sensing and level-shifting circuits without dual supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 30 V - supports direct integration into 5 V, 12 V, and 24 V industrial rails without regulation. |
| Quiescent Supply Current | 60 µA typ - enables multi-year battery life in portable sensors and IoT endpoints. |
| Input Offset Voltage | ±2 mV max at 25°C - ensures accurate voltage window detection with ≤10 mV hysteresis design margin. |
| Input Offset Current | ±0.5 nA max - minimizes error in high-impedance reference or sensor interfaces (e.g., thermistor dividers). |
| Output Sink Current | 30 mA at VO = 2 V - directly drives LEDs, small relays, or TTL/CMOS inputs without external buffers. |
| Common-Mode Input Range | 0 V to VCC − 2 V - allows ground-referenced signal comparison (e.g., battery voltage monitoring) on single supply. |
| Operating Temperature | 0°C to 70°C - qualified for commercial-grade embedded control and consumer electronics environments. |
Pinout & Package
LP339DE4 is housed in a 14-pin SOIC (D) package, 3.90 mm wide, 1.75 mm max height, with 1.27 mm pitch and RoHS-compliant NiPdAu lead finish. Pin 1 is marked by a beveled corner or notch; device orientation follows JEDEC MS-012AB standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 9, 10, 11, 12, 13 | Comparator Inputs & Outputs | Pins 1–5: Channel 1 (IN+, IN−, OUT); Pins 9–13: Channels 2–4 mirrored - each pair forms independent voltage comparison path. |
| 6, 7, 8, 14 | Power & Ground | Pin 14: VCC (3–30 V); Pin 7: GND; Pins 6 & 8: unused comparator inputs - must be grounded per TI design guidance to prevent leakage-induced drift. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation | Eliminates need for negative rail in level-detection circuits - reduces BOM count and PCB area in cost-sensitive designs. |
| Open-collector outputs | Enable wired-AND logic, mixed-voltage interfacing (e.g., 3.3 V logic driving 5 V bus), and flexible pull-up selection up to 30 V. |
| Reverse supply protection | Withstands accidental VCC polarity reversal - improves field reliability during prototyping or maintenance. |
| Low input bias current | Preserves accuracy in high-Z sensor networks (e.g., pH electrodes, photodiode amps) where leakage would distort thresholds. |
| Pin-for-pin compatibility | Direct drop-in replacement for LM339 and LP2901 in existing SOIC layouts - no PCB rework required for upgrade or sourcing continuity. |
Applications
| Battery Voltage Monitor | LED Status Indicator |
|---|---|
Use Scenario: Monitoring Li-ion cell voltage during charging/discharging to trigger low-battery warning or cutoff. IC Role / Device Role / Timing Role: Quadruple comparator acts as precision window detector - each channel compares against fixed reference voltages (e.g., 4.2 V, 3.7 V, 3.3 V, 3.0 V). Use Value: 60 µA supply current extends system runtime; rail-to-ground input range enables direct sensing without level-shifting circuitry. | Use Scenario: Driving multiple status LEDs (power-on, fault, standby) from microcontroller GPIOs with current limiting. IC Role / Device Role / Timing Role: Comparator channels convert digital logic levels to high-current LED drive signals - open-collector outputs sink up to 30 mA per LED. Use Value: Eliminates discrete transistors and base resistors; bimodal output ensures consistent brightness across varying forward voltages (1.8–3.6 V). |
| Threshold-Based Alarm System | Simple A/D Converter |
Use Scenario: Detecting temperature exceedance in HVAC ducts using NTC thermistor divider network. IC Role / Device Role / Timing Role: One comparator channel compares thermistor voltage against adjustable reference; output triggers relay or buzzer via optocoupler. Use Value: ±0.5 nA input offset current prevents thermistor self-heating errors; ground-referenced input simplifies reference generation with single resistor divider. | Use Scenario: Converting analog sensor output (e.g., light intensity) into 4-bit digital code using ladder network and parallel comparator array. IC Role / Device Role / Timing Role: Four LP339DE4 comparators serve as flash ADC front-end - each compares input to successive reference voltage steps. Use Value: 1.3 µs large-signal response time supports ≥300 kSPS sampling; low power enables integration into always-on environmental monitors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quadruple comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339DR | Higher input offset voltage (±3 mV max), wider temp range (−25°C to 85°C), same SOIC-D package and pinout. | Preferred for extended-temperature industrial controls where LP339DE4's 0°C–70°C rating is insufficient. | Select LM339DR when operating ambient exceeds 70°C or tighter long-term stability is required. |
| LP2901DR | Wider temperature range (−40°C to 85°C), identical electrical specs and SOIC-D footprint - fully pin-compatible. | Suitable for automotive or outdoor equipment requiring cold-start capability below 0°C. | Choose LP2901DR for designs needing guaranteed operation at −40°C without layout change. |
Compared with LP339DE4, LM339DR offers broader temperature tolerance but slightly higher offset error, while LP2901DR extends low-temperature performance with identical precision and layout compatibility - both retain the same 60 µA quiescent current and open-collector drive strength.
Availability
LP339DE4 is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial sensor interfaces, and consumer appliance control systems requiring stable component supply and long-term sourcing continuity.
Supply support for LP339DE4 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and consumer markets since 1930.
The LP339DE4 belongs to TI's legacy low-power comparator family, engineered specifically for single-supply, CMOS-compatible voltage comparison in cost-sensitive and power-constrained applications - emphasizing simplicity, reliability, and broad voltage interoperability.
FAQ
What is the maximum supply voltage for LP339DE4?
The LP339DE4 supports an absolute maximum supply voltage of 36 V, with recommended operation from 3 V to 30 V. This wide range allows direct use with common industrial rails (12 V, 24 V) and battery systems (3.3 V, 5 V, 9 V) without regulation. Exceeding 36 V risks permanent damage per TI's SLCS004B absolute maximum ratings.
Does LP339DE4 require dual power supplies?
No, LP339DE4 is explicitly designed for single-supply operation - its input common-mode range includes ground (0 V) and extends to VCC − 2 V, and output is open-collector with uncommitted collector. Dual supplies are unnecessary and unsupported; TI's datasheet confirms functionality from 3 V to 30 V with only VCC and GND connected.
Can LP339DE4 drive a relay directly?
Yes, LP339DE4 can directly drive small electromagnetic relays rated ≤30 mA coil current at VO = 2 V. Its Darlington-output stage provides 30 mA sink capability, sufficient for common 5 V/12 V signal relays (e.g., Omron LY series). Ensure coil flyback diode is installed, and verify relay dropout voltage stays above 0.4 V to maintain full current drive.
What is the input bias current specification for LP339DE4?
The LP339DE4 exhibits an input bias current of −2.5 nA (typical) and −4 nA (max) over full temperature range. This ultra-low value results from its p-n-p input stage and enables high-accuracy comparisons in high-impedance circuits - such as those using MΩ-level thermistor or photodiode networks - without significant voltage error.
Is LP339DE4 pin-compatible with LM339?
Yes, LP339DE4 is pin-for-pin compatible with LM339 in SOIC-D packaging, sharing identical pinout, electrical behavior, and footprint. TI's datasheet explicitly states "pin-for-pin compatible with LM339, LM239, LM2901", confirming drop-in replacement capability - no PCB redesign or schematic update is needed when substituting LP339DE4 for LM339 in existing designs.
LP339DE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- 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
LP339DE4 FAQ
1.How can I place an order for LP339DE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP339DE4 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 LP339DE4 reliable?
The price and inventory of LP339DE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP339DE4 is usually 5 days.
3.What payment methods are accepted for LP339DE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP339DE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP339DE4?
LP339DE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP339DE4 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 LP339DE4?
For technical support, including LP339DE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP339DE4 requirements.
6.How does Aetrix verify that LP339DE4 is sourced from the original manufacturer or authorized distributors?
All LP339DE4 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 LP339DE4 meets industry standards.
7.What is the process for return or replacement of LP339DE4?
All LP339DE4 units undergo pre-shipment inspection (PSI). If there is an issue with LP339DE4, 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 LP339DE4 part is unused and in its original packaging.
Return procedure for LP339DE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LP339DE4 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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