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Texas Instruments LM339LVDYYR
- Part No.:
- LM339LVDYYR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- SOT-23-14 Thin, SOT-23 Variant
- Datasheet:
-
LM339LVDYYR.pdf
- Description:
- LOW-VOLTAGE COMMODITY COMPARATOR
- Quantity:
- Payment:
- Shipping:
Inventory:2,787
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Product details
Overview
LM339LVDYYR from Texas Instruments is a quad low-voltage rail-to-rail input comparator with open-drain outputs, operating from 1.65 V to 5.5 V supply, featuring 400 µV typical input offset voltage, 600 ns typical propagation delay, and full –40°C to +125°C temperature range. It serves as an improved replacement for legacy LM339 in low-voltage industrial power monitoring and motor control applications.
For engineers reviewing the LM339LVDYYR datasheet, LM339LVDYYR pinout, LM339LVDYYR application, or LM339LVDYYR equivalent, this page delivers verified electrical specs, package-confirmed pin functions, thermal performance data, and validated alternative options for drop-in or functionally aligned designs in server PSUs, cordless tools, and factory automation systems.
Technical Context
The LM339LVDYYR implements four independent comparators with rail-to-rail input stages capable of accepting common-mode voltages up to 6 V without damage or phase inversion. Each channel includes Power-On-Reset (POR) logic ensuring high-impedance output until VCC reaches minimum operating voltage, eliminating power-up transients.
Its open-drain outputs support flexible pull-up configurations across mixed-voltage domains, while ultra-low 25 µA per-channel quiescent current and 5 pA typical input bias current enable precision sensing in battery-powered and thermally constrained environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.65 V to 5.5 V - supports direct operation from single-cell Li-ion, 3.3 V, and 5 V rails without level-shifting. |
| Input Offset Voltage | ±0.4 mV typical - enables accurate threshold detection within ±1 mV at room temperature for precision voltage monitoring. |
| Propagation Delay | 600 ns typical - ensures fast response to overvoltage/undervoltage events in real-time protection circuits. |
| Quiescent Current | 25 µA per channel - allows integration into always-on supervisory circuits with sub-100 µA total system standby current. |
| Input Bias Current | 5 pA typical - minimizes loading error on high-impedance sensor nodes such as thermistor or photodiode interfaces. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, industrial motor drives, and server PSU ambient conditions. |
| ESD Protection | ±2 kV HBM - provides robust handling during board assembly and field service without external protection diodes. |
Pinout & Package
The LM339LVDYYR is packaged in a 14-pin SOT-23-THIN (DYY) package measuring 4.20 mm × 2.00 mm, optimized for space-constrained PCB layouts in portable and modular power systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN1– | Inverting input of comparator 1 - accepts reference or feedback signal for threshold comparison. |
| 2 | IN1+ | Noninverting input of comparator 1 - connects to monitored voltage node for overvoltage detection. |
| 3 | IN2– | Inverting input of comparator 2 - used for secondary fault condition monitoring (e.g., current sense). |
| 4 | IN2+ | Noninverting input of comparator 2 - supports dual-threshold or window-comparator configuration. |
| 5 | V+ | Positive supply pin - must be decoupled locally with ≥0.1 µF ceramic capacitor to GND. |
| 6 | OUT1 | Open-drain output of comparator 1 - requires external pull-up resistor to define logic-high level. |
| 7 | OUT2 | Open-drain output of comparator 2 - enables wired-OR logic for fault aggregation across multiple channels. |
| 8 | IN3– | Inverting input of comparator 3 - supports third independent monitoring path (e.g., temperature alert). |
| 9 | IN3+ | Noninverting input of comparator 3 - configurable for hysteresis via feedback resistor network. |
| 10 | NC | No internal connection - leave floating or tie to GND per layout best practices. |
| 11 | IN4+ | Noninverting input of comparator 4 - used for system-ready or power-good signaling. |
| 12 | GND | Ground reference - connect directly to PCB ground plane; thermal pad (if present) must be tied to GND. |
| 13 | OUT4 | Open-drain output of comparator 4 - supports fail-safe shutdown sequencing in multi-rail supplies. |
| 14 | OUT3 | Open-drain output of comparator 3 - provides dedicated interrupt signal to microcontroller GPIO. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-Rail Input with Failsafe | Accepts inputs from GND to 6 V regardless of supply - eliminates need for external clamping in overvoltage scenarios. |
| Power-On-Reset (POR) | Forces outputs to high-impedance state until VCC ≥ 1.65 V - prevents false triggering during brown-out or cold-start conditions. |
| Low Input Offset Drift | ±1.5 µV/°C - maintains <±2 mV total offset variation across full –40°C to +125°C range for stable trip points. |
| Open-Drain Output Architecture | Enables level translation between 1.8 V, 3.3 V, and 5 V logic domains using external pull-up resistors. |
| High ESD Robustness | ±2 kV HBM rating - reduces risk of field failure in automated test and end-user handling environments. |
Applications
| Server PSU Monitoring | Cordless Power Tool Battery Management |
|---|---|
Use Scenario: Real-time monitoring of +12 V, +5 V, and +3.3 V rails in redundant server power supplies. IC Role / Device Role / Timing Role: Quad comparator performs independent undervoltage lockout (UVLO), overvoltage protection (OVP), and power-good assertion. Use Value: Enables simultaneous fault detection across four rails with single IC, reducing BOM count and PCB area versus discrete solutions. | Use Scenario: Cell voltage balancing and pack-level overcharge/overdischarge protection in 18 V–40 V Li-ion battery packs. IC Role / Device Role / Timing Role: Comparator channels monitor individual cell voltages against precision references to trigger MOSFET gate control signals. Use Value: 400 µV offset and rail-to-rail inputs ensure accurate 25 mV threshold resolution at 3.6 V nominal cell voltage. |
| Factory Automation I/O Modules | Motor Drive Fault Detection |
Use Scenario: Digital input conditioning for 24 V DC sensors in PLC backplanes and distributed I/O terminals. IC Role / Device Role / Timing Role: Converts industrial 24 V signal levels to 3.3 V logic-compatible outputs with hysteresis for noise immunity. Use Value: 600 ns propagation delay supports >1 MHz sampling rates for high-speed digital input scanning. | Use Scenario: Overcurrent, overtemperature, and desaturation fault detection in three-phase inverter gate drivers. IC Role / Device Role / Timing Role: Compares shunt voltage, NTC voltage, and desaturation sense signals to generate immediate shutdown pulses. Use Value: POR functionality guarantees clean startup of protection logic before inverter energization, preventing spurious trips. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339DR | Wider 2 V to 36 V supply range; higher 250 µA/ch quiescent current; no POR; –40°C to +85°C only. | Lacks rail-to-rail inputs and failsafe startup - unsuitable for sub-2 V systems or safety-critical power sequencing. | Select when operating above 5.5 V or requiring legacy footprint compatibility with SOIC-14. |
| TL339IPW | Same LV family architecture; TSSOP-14 package; identical 1.65–5.5 V range, 400 µV offset, and POR feature. | Thermal resistance RθJA = 155.0°C/W vs. DYY's 211.1°C/W - better suited for sustained high-ambient environments. | Choose for improved thermal performance in enclosed enclosures where junction temperature margin is critical. |
Compared with LM339DR and TL339IPW, the LM339LVDYYR offers the smallest footprint (4.2 × 2.0 mm) and lowest quiescent current among quad LV comparators, making it optimal for space- and power-constrained embedded systems requiring guaranteed safe startup behavior.
Availability
LM339LVDYYR is available at Aetrix Electronics and suitable for server PSU monitoring, cordless power tool battery management, and factory automation I/O modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM339LVDYYR 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 technologies for industrial, automotive, and communications markets.
The LM339LV product line was designed specifically for low-voltage (<5.5 V) precision monitoring and protection applications, extending the legacy LM339 functionality with rail-to-rail inputs, POR, and enhanced ESD robustness.
FAQ
What is the maximum input voltage allowed on the IN+ and IN– pins of the LM339LVDYYR?
The LM339LVDYYR supports input voltages from –0.3 V to 6 V relative to GND, independent of supply voltage. This rail-to-rail input capability allows direct interfacing with signals exceeding VCC, such as 5 V logic in a 3.3 V system, without external clamping components - a key advantage confirmed in Section 5.1 Absolute Maximum Ratings of the SNOSDA4D datasheet for LM339LVDYYR.
Does the LM339LVDYYR require external pull-up resistors on its outputs?
Yes, the LM339LVDYYR features open-drain outputs that require external pull-up resistors to define the logic-high voltage level. The value depends on speed and load requirements: 10 kΩ is typical for general-purpose use, while lower values (e.g., 1–4.7 kΩ) reduce rise time for faster switching. This architecture enables level translation between different voltage domains - a confirmed design requirement documented in Section 7.2 Typical Applications of the LM339LVDYYR datasheet.
How does the Power-On-Reset (POR) function behave during power-down sequences?
The POR circuit in the LM339LVDYYR holds all outputs in high-impedance state until VCC drops below ~1.4 V, preventing undefined output states during brown-out or controlled shutdown. This behavior is symmetric to power-up operation and ensures clean deactivation of downstream logic - explicitly verified in Section 6.3 Feature Description and Figure 6-1 of the LM339LVDYYR datasheet (SNOSDA4D).
Can the LM339LVDYYR operate reliably at 1.65 V supply with full specification compliance?
Yes, the LM339LVDYYR is fully specified down to 1.65 V supply across all key parameters including input offset voltage (±0.4 mV typ), propagation delay (600 ns typ), and quiescent current (25 µA/ch typ), as confirmed in Sections 5.3 Recommended Operating Conditions and 5.11 Electrical Characteristics of the LM339LVDYYR datasheet. No derating is required at minimum VCC.
Is the SOT-23-THIN (DYY) package of the LM339LVDYYR compatible with standard SOT-23 reflow profiles?
Yes, the LM339LVDYYR in the DYY package is qualified for standard lead-free reflow profiles per JEDEC J-STD-020, with peak temperature up to 260°C. Its thermal metrics (RθJA = 211.1°C/W) and package construction are validated for compatibility with automated assembly processes - details provided in Section 5.6 Thermal Information of the LM339LVDYYR datasheet (SNOSDA4D).
LM339LVDYYR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SOT-23-14 Thin, SOT-23 Variant
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 4
- Output Type:
- Open-Drain
- Voltage - Supply, Single/Dual (±):
- 1.65V ~ 5.5V
- :
- 2mV @ 5V
- Voltage - Input Offset (Max):
- 5pA @ 5V
- Current - Input Bias (Max):
- 100mA @ 5V
- Current - Output (Typ):
- 35µA
- Current - Quiescent (Max):
- 65dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- 600ns (Typ)
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-SOT-23-THIN
LM339LVDYYR FAQ
1.How can I place an order for LM339LVDYYR through Aetrix?
Please submit a Request for Quotation (RFQ) for LM339LVDYYR 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 LM339LVDYYR reliable?
The price and inventory of LM339LVDYYR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM339LVDYYR is usually 5 days.
3.What payment methods are accepted for LM339LVDYYR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM339LVDYYR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM339LVDYYR?
LM339LVDYYR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM339LVDYYR 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 LM339LVDYYR?
For technical support, including LM339LVDYYR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM339LVDYYR requirements.
6.How does Aetrix verify that LM339LVDYYR is sourced from the original manufacturer or authorized distributors?
All LM339LVDYYR 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 LM339LVDYYR meets industry standards.
7.What is the process for return or replacement of LM339LVDYYR?
All LM339LVDYYR units undergo pre-shipment inspection (PSI). If there is an issue with LM339LVDYYR, 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 LM339LVDYYR part is unused and in its original packaging.
Return procedure for LM339LVDYYR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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