My Inquiry
My Account
Texas Instruments LM393LVQDGKRQ1
- Part No.:
- LM393LVQDGKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LM393LVQDGKRQ1.pdf
- Description:
- AUTOMOTIVE LOW-VOLTAGE COMMODITY
- Quantity:
- Payment:
- Shipping:
Inventory:683
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM393LVQDGKRQ1 from Texas Instruments is a dual, automotive-grade, rail-to-rail input voltage comparator with open-drain outputs, operating from 1.65 V to 5.5 V. It delivers 400 µV typical input offset voltage, 600 ns typical propagation delay, 25 µA per channel quiescent current, and full –40°C to +125°C operation-used in server PSU overvoltage detection and motor drive current sensing.
For engineers reviewing the LM393LVQDGKRQ1 datasheet, LM393LVQDGKRQ1 pinout, LM393LVQDGKRQ1 application, or LM393LVQDGKRQ1 equivalent, key selection criteria include AEC-Q100 Grade 1 qualification, rail-to-rail input with failsafe, Power-On-Reset (POR) for glitch-free startup, low input bias current (5 pA), and compatibility with 1.8 V/3.3 V/5 V systems.
Technical Context
The LM393LVQDGKRQ1 implements a precision comparator core with internal Power-On-Reset circuitry that forces output into high-impedance state until supply reaches minimum operating voltage, preventing transients during power-up/down. Its rail-to-rail input stage operates up to 6 V without damage or phase inversion, supporting wide common-mode range across all supply voltages.
Each comparator features an open-drain output capable of sinking up to 100 mA (typical), with 150–200 mV voltage swing at 4 mA load (25°C) and ≤300 mV at full temperature range. Input bias current remains stable at 5 pA (typical) across –40°C to +125°C, enabling high-impedance sensing in battery-powered automotive subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.65 V to 5.5 V - supports direct interface with 1.8 V, 3.3 V, and 5 V logic and analog rails |
| Input Offset Voltage | ±0.4 mV typical - enables accurate threshold detection in precision voltage monitoring circuits |
| Propagation Delay | 600 ns typical - ensures fast response for real-time fault detection in motor control and PSU protection |
| Quiescent Current | 25 µA per channel - allows always-on monitoring in low-power automotive modules without battery drain |
| Input Bias Current | 5 pA typical - preserves signal integrity when interfacing with high-impedance sensors or RC networks |
| Operating Temperature | –40°C to +125°C ambient - meets AEC-Q100 Grade 1 requirements for under-hood and infotainment applications |
| ESD Rating | HBM ±2 kV, CDM ±1 kV - provides robust handling in automated manufacturing and field service environments |
Pinout & Package
LM393LVQDGKRQ1 is packaged in an 8-pin VSSOP (DGK) package measuring 3.00 mm × 3.00 mm with exposed thermal pad. The package supports high-density PCB layouts and enhanced thermal performance via direct GND connection of the thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1 (Pin 1) | Comparator 1 output | Open-drain output requiring external pull-up; sinks up to 100 mA for direct LED or MOSFET gate drive |
| IN1– (Pin 2) | Comparator 1 inverting input | Rail-to-rail capable input; accepts signals from GND to V+ without damage or inversion |
| IN1+ (Pin 3) | Comparator 1 noninverting input | Same rail-to-rail range as IN1–; used for reference or signal comparison |
| GND (Pin 4) | Negative supply reference | Common return path for both comparators and thermal pad connection point |
| IN2+ (Pin 5) | Comparator 2 noninverting input | Independent input channel; enables dual-threshold or window-comparator configurations |
| IN2– (Pin 6) | Comparator 2 inverting input | Matches IN1– electrical behavior; supports differential or single-ended sensing |
| OUT2 (Pin 7) | Comparator 2 output | Functionally identical to OUT1; allows independent control of two system functions |
| V+ (Pin 8) | Positive supply | Single-supply input powering both comparators; no split-rail requirement |
Key Features
| Feature | Design Value |
|---|---|
| Power-On-Reset (POR) | Guarantees high-Z output state until V+ reaches valid operating level, eliminating spurious switching at power-up |
| Rail-to-Rail Input with Failsafe | Accepts inputs from GND to 6 V regardless of supply; prevents latch-up or phase reversal during overvoltage events |
| AEC-Q100 Qualified (Grade 1) | Validated for automotive use with –40°C to +125°C operation, HBM ESD Level 2, and CDM Level C5 |
| Low Input Offset Drift | ±1.5 µV/°C - maintains threshold accuracy across temperature gradients in engine control units |
| Open-Drain Output Architecture | Enables wired-OR logic, level translation between different voltage domains, and flexible pull-up configuration |
Applications
| Server PSU Monitoring | Motor Drive Current Sensing |
|---|---|
Use Scenario: Real-time overvoltage and undervoltage detection in 12 V/48 V server power supplies. IC Role / Device Role / Timing Role: Dual comparator monitors high-side and low-side rail margins with independent thresholds. Use Value: 600 ns propagation delay enables sub-microsecond fault response; POR prevents false trips during cold start. | Use Scenario: Isolated current sensing feedback loop in BLDC motor inverters. IC Role / Device Role / Timing Role: Compares shunt voltage against programmable thresholds to trigger PWM shutdown or alert. Use Value: 5 pA input bias current avoids loading precision shunt amplifiers; rail-to-rail input accommodates bidirectional sensing. |
| Infotainment System Power Sequencing | Appliance Battery Management |
Use Scenario: Controlled power-up sequence for display, audio, and MCU subsystems in automotive head units. IC Role / Device Role / Timing Role: Dual comparator verifies rail readiness (e.g., 3.3 V and 5 V) before enabling downstream regulators. Use Value: Independent channels eliminate need for external logic; 25 µA/channel quiescent current extends standby time. | Use Scenario: Cell voltage monitoring and charge/discharge cutoff in cordless power tool battery packs. IC Role / Device Role / Timing Role: Compares individual Li-ion cell voltages against upper/lower limits using resistor-divider networks. Use Value: 400 µV offset voltage enables ±10 mV detection accuracy; 1.65 V min supply supports operation down to near-dead battery states. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393QPWRQ1 | Higher input offset (±7 mV typ), no POR, wider supply (2.0–36 V), no rail-to-rail input | Suitable for high-voltage industrial sensing but lacks failsafe startup and precision at low voltage | Select LM393LVQDGKRQ1 when operating below 5 V or requiring guaranteed glitch-free power sequencing |
| TL393LVQDRQ1 | Identical electrical specs and pinout; differs only in SOIC-8 packaging (D) vs. VSSOP-8 (DGK) | Same functional replacement; SOIC offers easier hand-soldering and higher creepage | Choose TL393LVQDRQ1 if board space allows larger footprint or manual assembly is required |
Compared with LM393QPWRQ1 and TL393LVQDRQ1, LM393LVQDGKRQ1 uniquely combines AEC-Q100 Grade 1 qualification, POR, rail-to-rail input, and ultra-low quiescent current in a space-constrained VSSOP package-making it optimal for next-generation automotive power management where reliability, precision, and density are co-prioritized.
Availability
LM393LVQDGKRQ1 is available at Aetrix Electronics and suitable for server PSU monitoring, motor drive current sensing, and infotainment power sequencing requiring stable component supply across automotive production lifecycles.
Supply support for LM393LVQDGKRQ1 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 and embedded processing solutions for industrial, automotive, and personal electronics markets.
The LM393LV-Q1 product line was designed specifically for low-voltage automotive power management and signal conditioning, replacing legacy comparators with enhanced precision, failsafe startup, and extended temperature capability.
FAQ
What is the maximum input voltage allowed on the IN+ and IN– pins of LM393LVQDGKRQ1?
The LM393LVQDGKRQ1 supports input voltages from –0.3 V to 6 V relative to GND, independent of supply voltage. This rail-to-rail input with overvoltage tolerance allows safe operation even when inputs exceed V+, such as during transient conditions in automotive battery monitoring or hot-swap applications-ensuring no phase inversion or damage occurs.
Does LM393LVQDGKRQ1 require external pull-up resistors on its outputs?
Yes, LM393LVQDGKRQ1 features open-drain outputs (OUT1 and OUT2) and requires external pull-up resistors to define logic-high voltage levels. Typical values range from 1 kΩ to 10 kΩ depending on speed and load requirements. Pull-up to any voltage ≤6 V is permitted, enabling level-shifting between different supply domains without additional logic.
How does the Power-On-Reset (POR) function affect system startup behavior of LM393LVQDGKRQ1?
The POR circuit in LM393LVQDGKRQ1 holds both outputs in high-impedance state until V+ rises above ~1.5 V, then releases outputs after ~50 µs. This eliminates false triggering during brown-out or slow-ramp power-up sequences-critical for automotive modules where uncontrolled relay activation or fan spin-up must be avoided before system stabilization.
Can LM393LVQDGKRQ1 operate reliably at 1.8 V supply voltage?
Yes, LM393LVQDGKRQ1 is fully specified from 1.65 V to 5.5 V, including electrical parameters at 1.8 V. At this voltage, it maintains 400 µV typical offset, 600 ns propagation delay, and 25 µA per channel quiescent current-making it ideal for modern low-power automotive microcontrollers and sensor interfaces powered directly from 1.8 V LDOs.
Is LM393LVQDGKRQ1 pin-compatible with standard LM393-Q1 comparators?
No, LM393LVQDGKRQ1 is not pin-compatible with legacy LM393-Q1. While both are dual comparators in 8-pin packages, LM393LVQDGKRQ1 uses VSSOP (DGK) with pin 1 = OUT1, pin 2 = IN1–, pin 3 = IN1+, pin 4 = GND, pin 5 = IN2+, pin 6 = IN2–, pin 7 = OUT2, pin 8 = V+. Standard LM393-Q1 (SOIC-8) uses different pin assignments-including IN1– on pin 2 and IN1+ on pin 3-but swaps IN2+ and IN2– positions. Direct replacement requires PCB redesign.
LM393LVQDGKRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 2
- 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:
- Automotive
- Grade:
- AEC-Q100
- Qualification:
- Surface Mount
- :
- 8-VSSOP
LM393LVQDGKRQ1 FAQ
1.How can I place an order for LM393LVQDGKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM393LVQDGKRQ1 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 LM393LVQDGKRQ1 reliable?
The price and inventory of LM393LVQDGKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM393LVQDGKRQ1 is usually 5 days.
3.What payment methods are accepted for LM393LVQDGKRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM393LVQDGKRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM393LVQDGKRQ1?
LM393LVQDGKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM393LVQDGKRQ1 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 LM393LVQDGKRQ1?
For technical support, including LM393LVQDGKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM393LVQDGKRQ1 requirements.
6.How does Aetrix verify that LM393LVQDGKRQ1 is sourced from the original manufacturer or authorized distributors?
All LM393LVQDGKRQ1 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 LM393LVQDGKRQ1 meets industry standards.
7.What is the process for return or replacement of LM393LVQDGKRQ1?
All LM393LVQDGKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM393LVQDGKRQ1, 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 LM393LVQDGKRQ1 part is unused and in its original packaging.
Return procedure for LM393LVQDGKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM393LVQDGKRQ1 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…
