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Texas Instruments LM339LVQDRQ1
- Part No.:
- LM339LVQDRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM339LVQDRQ1.pdf
- Description:
- AUTOMOTIVE, 5.5-V, LOW-VOLTAGE S
- Quantity:
- Payment:
- Shipping:
Inventory:1,421
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Product details
Overview
LM339LVQDRQ1 from Texas Instruments is a quad automotive-grade rail-to-rail input voltage 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 25 µA/Ch typical quiescent current - used in motor drive fault detection and server PSU overvoltage monitoring.
For engineers reviewing the LM339LVQDRQ1 datasheet, LM339LVQDRQ1 pinout, LM339LVQDRQ1 application, or LM339LVQDRQ1 equivalent, this page delivers verified electrical specs, AEC-Q100 Grade 1 qualification details, SOIC-14 package mapping, and direct functional alternatives for low-voltage (≤5 V) automotive comparator replacement.
Technical Context
The LM339LVQDRQ1 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, and includes Power-On-Reset (POR) logic that forces outputs into high-impedance until VCC reaches minimum operating voltage - preventing false triggering during power-up/power-down sequences.
Each channel features ultra-low input bias current (5 pA typical), low input offset drift (±1.5 µV/°C), and open-drain output compatible with external pull-up voltages up to 6 V, enabling flexible interfacing with microcontrollers, FPGAs, or logic families across 1.8 V, 3.3 V, and 5 V domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.65 V to 5.5 V - supports direct integration into modern low-voltage automotive subsystems (e.g., 3.3 V MCU I/O rails). |
| Input Offset Voltage | ±0.4 mV typical - enables accurate threshold detection in precision battery monitoring and sensor signal conditioning. |
| Propagation Delay | 600 ns typical at 5 V - ensures timely response in fast fault-detection circuits such as motor overcurrent protection. |
| Quiescent Current | 25 µA per channel - reduces standby power in always-on vehicle modules like body control units. |
| Input Bias Current | 5 pA typical - minimizes voltage error when driving high-impedance sources (e.g., thermistors, photodiodes). |
| Operating Temperature | –40°C to +125°C ambient - meets AEC-Q100 Grade 1 requirements for under-hood and powertrain applications. |
| ESD Rating | HBM ±2 kV, CDM ±1 kV - provides robustness against assembly and field-level electrostatic events in automotive production environments. |
Pinout & Package
LM339LVQDRQ1 is supplied in a 14-pin SOIC package (body size 3.91 mm × 8.65 mm) with standard lead pitch and gull-wing leads. The device uses industry-standard SOIC-14 footprint and thermal pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1 (Pin 1) | Comparator 1 output | Open-drain output requiring external pull-up; sinks up to 100 mA short-circuit current. |
| OUT2 (Pin 2) | Comparator 2 output | Independent open-drain output; electrically isolated from other channels. |
| V+ (Pin 3) | Positive supply | Single supply rail shared by all four comparators; accepts 1.65–5.5 V. |
| IN1– (Pin 4) | Inverting input, Ch1 | Rail-to-rail input stage; withstands –0.3 V to 6 V common-mode range. |
| IN1+ (Pin 5) | Noninverting input, Ch1 | Same rail-to-rail capability; differential input voltage range ±100 mV typical for fast switching. |
| IN2– (Pin 6) | Inverting input, Ch2 | Identical electrical behavior to IN1–; no internal cross-talk between channels. |
| IN2+ (Pin 7) | Noninverting input, Ch2 | Supports independent reference configuration per channel without shared bias networks. |
| GND (Pin 12) | Negative supply | Common ground reference for all inputs, outputs, and internal POR circuitry. |
| OUT3 (Pin 14) | Comparator 3 output | Third open-drain output; identical sink strength and leakage (<100 pA) to OUT1/OUT2. |
| OUT4 (Pin 13) | Comparator 4 output | Fourth independent output; enables full quad-level status reporting in safety-critical systems. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-Rail Input with Failsafe | Accepts inputs from GND to 6 V without damage or inversion - eliminates need for external level-shifting in mixed-voltage systems. |
| Power-On-Reset (POR) | Forces all outputs to high-Z until V+ ≥ 1.65 V - prevents spurious logic transitions during cold cranking or brown-out conditions. |
| AEC-Q100 Qualified | Grade 1 temperature range (–40°C to +125°C), HBM ESD Level 2, CDM Level C5 - certified for automotive powertrain and chassis applications. |
| Low Quiescent Current | 25 µA per channel at 25°C - enables use in battery-backed modules where <100 µA total system standby current is required. |
| Open-Drain Output Architecture | Allows wired-OR logic, flexible pull-up voltage selection (up to 6 V), and compatibility with 1.8 V/3.3 V/5 V logic families. |
Applications
| Motor Drive Fault Detection | Server PSU Overvoltage Monitoring |
|---|---|
Use Scenario: Real-time monitoring of phase currents and DC bus voltage in BLDC motor controllers to trigger shutdown on overcurrent or overvoltage events. IC Role / Device Role / Timing Role: Quad comparator independently compares sensed signals against fixed thresholds; outputs feed OR-gated logic to MCU interrupt pin. Use Value: 600 ns propagation delay enables sub-microsecond fault response, meeting IEC 61800-5-2 functional safety timing constraints. | Use Scenario: Continuous supervision of +12 V and +48 V rails in telecom/server PSUs to detect overvoltage before downstream components are damaged. IC Role / Device Role / Timing Role: Each comparator channel monitors one rail via resistive divider; open-drain outputs connect to centralized fault bus. Use Value: Rail-to-rail input allows direct sensing without op-amp buffers, reducing BOM count and board space in high-density PSU designs. |
| Infotainment System Power Sequencing | Appliance Motor Control Logic |
Use Scenario: Enforcing strict power-up/down sequencing of display, audio processor, and connectivity ICs in automotive infotainment head units. IC Role / Device Role / Timing Role: Four comparators verify individual supply rails (1.1 V, 1.8 V, 3.3 V, 5 V) reach regulation before enabling next-stage enable signals. Use Value: POR feature guarantees known output state during ramp-up, eliminating need for external reset supervisors in multi-rail sequencing chains. | Use Scenario: Detecting end-of-travel, stall, or overload conditions in cordless power tools and smart home appliances using current-sense and position feedback signals. IC Role / Device Role / Timing Role: Comparator outputs directly drive MOSFET gate drivers or feed microcontroller GPIO pins for closed-loop control decisions. Use Value: 5 pA input bias current preserves accuracy of high-impedance current-sense resistor networks, improving torque estimation fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339QDRQ1 | Higher 2 mV max offset, 1.5–36 V supply range, no POR, no rail-to-rail input - operates down to 1.5 V but lacks failsafe input stage. | Suitable for wide-supply industrial systems; not qualified for AEC-Q100 Grade 1 operation. | Select when extended supply range (>5.5 V) or legacy pin compatibility is required, not for new automotive designs. |
| TL339IPWR | Non-automotive grade, 2.0–36 V supply, 7 mV max offset, no AEC-Q100 qualification, no POR - lower cost but unqualified for automotive use. | Applicable in consumer or industrial equipment where AEC-Q100 compliance is unnecessary. | Choose only for cost-sensitive non-automotive applications; not acceptable for OEM automotive BOMs. |
Compared with LM339QDRQ1 and TL339IPWR, LM339LVQDRQ1 delivers tighter offset, guaranteed POR behavior, rail-to-rail input tolerance, and full AEC-Q100 Grade 1 qualification - making it the sole option for new low-voltage automotive designs requiring functional safety-aware analog monitoring.
Availability
LM339LVQDRQ1 is available at Aetrix Electronics and suitable for motor drives, server PSUs, and infotainment systems requiring stable component supply, long-term automotive lifecycle support, and AEC-Q100-compliant performance verification.
Supply support for LM339LVQDRQ1 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 company specializing in analog and embedded processing technologies, with leadership in automotive, industrial, and power management solutions.
LM339LVQDRQ1 belongs to TI's LV-Q1 automotive comparator family, designed specifically to replace legacy LM339-Q1 devices in ≤5 V systems while adding rail-to-rail input, POR, and improved ESD robustness for next-generation vehicle electronics.
FAQ
What is the maximum input voltage allowed on LM339LVQDRQ1 pins?
The LM339LVQDRQ1 supports input voltages from –0.3 V to 6 V relative to GND on all IN+ and IN– pins, regardless of supply voltage - enabling safe interface with higher-voltage sensors or legacy 5 V logic without external clamping diodes. This rail-to-rail input with failsafe operation is confirmed in Section 5.1 Absolute Maximum Ratings and Section 3 Description of the datasheet.
Does LM339LVQDRQ1 have built-in Power-On-Reset functionality?
Yes, LM339LVQDRQ1 includes an integrated Power-On-Reset (POR) circuit that holds all four outputs in high-impedance until the supply voltage V+ reaches and stabilizes at ≥1.65 V. This prevents false triggering during power-up transients and is explicitly documented in Section 3 Description and Section 4.3 Pin Functions of the datasheet.
Can LM339LVQDRQ1 operate from a 1.8 V supply?
Yes, LM339LVQDRQ1 is fully specified to operate from 1.65 V to 5.5 V, including 1.8 V nominal supplies. Electrical Characteristics tables (Sections 5.7–5.11) list performance data at both 1.8 V and 5 V, confirming functionality across the entire range - critical for compatibility with modern low-voltage MCUs and SoCs.
What is the open-drain output sink current capability of LM339LVQDRQ1?
LM339LVQDRQ1 outputs can sink up to 100 mA in short-circuit condition (ISC) at 5 V supply, with typical VOL = 200 mV at 4 mA sink current. This enables direct driving of LEDs, small relays, or logic inputs without external buffer transistors - verified in Sections 5.7–5.11 Electrical Characteristics and Figure 5-7 through 5-9.
Is LM339LVQDRQ1 pin-compatible with standard LM339-Q1 devices?
No, LM339LVQDRQ1 is not pin-compatible with LM339-Q1. While both are quad comparators in SOIC-14 packages, LM339LVQDRQ1 uses a different pinout: OUT1/OUT2 on Pins 1/2 versus Pins 1/13 on LM339-Q1. This is clearly shown in Figure 4-5 and Table 4-1 of the datasheet, and requires PCB layout revision for migration.
LM339LVQDRQ1 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:
- Open-Drain
- Voltage - Supply, Single/Dual (±):
- 1.65V ~ 5.5V
- :
- 2mV @ 5V
- Voltage - Input Offset (Max):
- 5pA (Typ)
- Current - Input Bias (Max):
- 125mA @ 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:
- Automotive
- Grade:
- AEC-Q100
- Qualification:
- Surface Mount
- :
- 14-SOIC
LM339LVQDRQ1 FAQ
1.How can I place an order for LM339LVQDRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM339LVQDRQ1 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 LM339LVQDRQ1 reliable?
The price and inventory of LM339LVQDRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM339LVQDRQ1 is usually 5 days.
3.What payment methods are accepted for LM339LVQDRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM339LVQDRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM339LVQDRQ1?
LM339LVQDRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM339LVQDRQ1 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 LM339LVQDRQ1?
For technical support, including LM339LVQDRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM339LVQDRQ1 requirements.
6.How does Aetrix verify that LM339LVQDRQ1 is sourced from the original manufacturer or authorized distributors?
All LM339LVQDRQ1 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 LM339LVQDRQ1 meets industry standards.
7.What is the process for return or replacement of LM339LVQDRQ1?
All LM339LVQDRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM339LVQDRQ1, 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 LM339LVQDRQ1 part is unused and in its original packaging.
Return procedure for LM339LVQDRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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