My Inquiry
My Account
Texas Instruments TL331LVQDBVRQ1
- Part No.:
- TL331LVQDBVRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TL331LVQDBVRQ1.pdf
- Description:
- AUTOMOTIVE 1.65-V TO 5.5-V
- Quantity:
- Payment:
- Shipping:
Inventory:1,547
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TL331LVQDBVRQ1 from Texas Instruments is an AEC-Q100 Grade 1 qualified single-channel automotive comparator with rail-to-rail input, open-drain output, 1.65 V to 5.5 V supply range, 400 µV typical input offset voltage, and 600 ns typical propagation delay. It serves as a low-voltage replacement for TL331-Q1 in battery-powered motor control and power management circuits.
For engineers reviewing the TL331LVQDBVRQ1 datasheet, TL331LVQDBVRQ1 pinout, TL331LVQDBVRQ1 application, or TL331LVQDBVRQ1 equivalent, key selection criteria include its -40°C to +125°C operation, 25 µA/Ch quiescent current, Power-On-Reset (POR) functionality, failsafe rail-to-rail input stage, and SOT-23-5 package compatibility with space-constrained automotive modules.
Technical Context
The TL331LVQDBVRQ1 implements a precision comparator core with internal Power-On-Reset circuitry that forces the output into high-impedance state until VCC reaches minimum operating voltage, preventing false triggering during power ramp-up or brownout conditions. Its rail-to-rail input stage operates up to 6 V without damage or phase inversion, supporting wide common-mode ranges across 1.65–5.5 V supplies.
It features ultra-low input bias current (5 pA typical) and input offset voltage drift (±1.5 µV/°C), enabling stable threshold detection in high-impedance sensor interfaces. The open-drain output supports flexible pull-up configurations and wired-OR logic, while ESD protection meets 2 kV HBM and CDM Level C5 per AEC-Q100.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.65 V to 5.5 V - Enables direct interface with 1.8 V, 3.3 V, and 5 V automotive microcontrollers and sensors without level-shifting. |
| Input Offset Voltage | ±0.4 mV typical - Ensures accurate voltage threshold comparison in battery monitoring and overvoltage protection circuits. |
| Propagation Delay | 600 ns typical - Supports real-time response in motor fault detection and fast-switching PSU feedback loops. |
| Quiescent Current | 25 µA per channel - Reduces standby power in always-on vehicle subsystems such as body control modules. |
| Input Bias Current | 5 pA typical - Minimizes loading error when used with high-resistance voltage dividers or thermistor networks. |
| Operating Temperature | –40°C to +125°C ambient - Qualified for under-hood and transmission-control applications per AEC-Q100 Grade 1. |
| ESD Rating | 2 kV HBM - Provides robustness against handling and system-level electrostatic discharge in production and field environments. |
Pinout & Package
SOT-23-5 package (1.60 mm × 2.90 mm), surface-mount, lead-free, RoHS-compliant. Thermal pad not present; standard SOT-23 footprint with exposed die pad omitted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN– (Pin 1) | Inverting Input | Accepts reference or feedback signal; rail-to-rail capable up to 6 V beyond GND without damage. |
| GND (Pin 2) | Ground Reference | Primary return path for supply and signal currents; connects to system chassis or PCB ground plane. |
| IN+ (Pin 3) | Noninverting Input | Accepts sensed voltage (e.g., battery voltage, motor phase); same rail-to-rail specification as IN–. |
| OUT (Pin 4) | Open-Drain Output | Requires external pull-up; enables wired-OR configuration, level translation, and fault signaling to MCU interrupt pins. |
| VCC (Pin 5) | Positive Supply | Supplies internal bias and output stage; POR circuit monitors this node to ensure known startup state. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-Rail Input with Failsafe | Inputs tolerate voltages from GND to 6 V independent of supply, eliminating need for clamping diodes in overvoltage-prone systems. |
| Power-On-Reset (POR) | Guarantees high-impedance output until VCC ≥ 1.65 V, preventing spurious logic transitions during cold cranking or wake-up sequences. |
| AEC-Q100 Grade 1 Qualification | Validated for automotive ambient temperatures (–40°C to +125°C), HBM ±2 kV, and CDM Level C5 - suitable for safety-critical ECUs. |
| Ultra-Low Quiescent Current | 25 µA per channel at 25°C enables >10-year battery life in always-on telematics and sensor nodes. |
| Low Input Offset Drift | ±1.5 µV/°C ensures stable trip points across full temperature range - critical for precision thermal or voltage monitoring. |
Applications
| Motor Drive Fault Detection | Server PSU OVP/UVP Monitoring |
|---|---|
Use Scenario: Detect overcurrent or phase loss in 12 V/24 V BLDC motor drives by comparing shunt voltage against programmable thresholds. IC Role / Device Role / Timing Role: Precision voltage comparator generating immediate fault flag via open-drain output to MCU GPIO. Use Value: 600 ns propagation delay enables sub-microsecond response to winding short-circuits, improving IGBT reliability. | Use Scenario: Monitor 12 V and 54 V rails in telecom server power supplies for overvoltage (OVP) and undervoltage (UVP) conditions. IC Role / Device Role / Timing Role: Dual-threshold comparator feeding dedicated supervisor IC or microcontroller reset logic. Use Value: Rail-to-rail inputs accept direct connection to scaled-down rail voltages without external resistors, reducing BOM count. |
| Infotainment System Power Sequencing | Appliance Battery Management |
Use Scenario: Enforce strict power-up sequence between display backlight, SoC core, and audio codec in automotive infotainment head units. IC Role / Device Role / Timing Role: Voltage monitor asserting enable signals only after upstream rails reach regulation. Use Value: POR feature eliminates need for external RC timing network, simplifying layout and improving sequencing repeatability. | Use Scenario: Monitor lithium-ion cell voltage in cordless power tools to trigger charge termination or deep-discharge cutoff. IC Role / Device Role / Timing Role: Low-power comparator interfacing directly with high-impedance cell voltage divider. Use Value: 5 pA input bias current prevents measurement error in 1 MΩ+ divider networks, preserving battery gauge accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL331QDBVRQ1 | Higher input offset voltage (±9 mV max), no POR, wider supply range (2 V to 36 V), no rail-to-rail input. | Used where high-voltage tolerance is required but low-voltage precision and startup reliability are secondary. | Select TL331LVQDBVRQ1 when operating ≤5 V and requiring guaranteed POR behavior and tighter offset specs. |
| LM393LVQDRQ1 | Dual-channel SOIC-8 device; identical electrical specs per channel but different pinout and package size. | Preferred in designs needing two comparators with shared supply and ground, where board area allows SOIC footprint. | Choose TL331LVQDBVRQ1 for single-channel, space-constrained SOT-23-5 layouts; LM393LVQDRQ1 when dual functionality justifies larger package. |
Compared with TL331QDBVRQ1, TL331LVQDBVRQ1 delivers superior precision and deterministic startup at low voltage; compared with LM393LVQDRQ1, it offers half the channel count in 40% less PCB area, ideal for discrete fault-monitoring nodes.
Availability
TL331LVQDBVRQ1 is available at Aetrix Electronics and suitable for motor drive fault detection, server PSU OVP/UVP monitoring, and infotainment power sequencing requiring stable component supply across automotive production lifecycles.
Supply support for TL331LVQDBVRQ1 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 delivering analog and embedded processing solutions for automotive, industrial, personal electronics, and communications markets.
The TL331LV-Q1 product line targets low-voltage automotive sensing and power management applications, offering improved performance over legacy comparators while maintaining drop-in compatibility in ≤5 V systems.
FAQ
What is the maximum input voltage allowed on the IN+ and IN– pins of TL331LVQDBVRQ1?
The TL331LVQDBVRQ1 supports rail-to-rail input with failsafe operation: both IN+ and IN– pins tolerate voltages from –0.3 V to 6 V relative to GND, regardless of supply voltage. This allows direct interface with signals exceeding VCC (e.g., 5.5 V inputs on a 3.3 V supply) without external clamping or damage risk. The absolute maximum rating is 6 V, and operation above VCC is explicitly supported per datasheet Section 5.1.
Does TL331LVQDBVRQ1 require an external pull-up resistor on the OUT pin?
Yes, TL331LVQDBVRQ1 features an open-drain output and requires an external pull-up resistor to define the high-state voltage level. Typical values range from 2.2 kΩ to 10 kΩ depending on rise time and bus loading requirements. The pull-up may connect to any compatible voltage rail (e.g., 3.3 V or 5 V), enabling level translation between domains - a key design advantage confirmed in Section 4.1 and Figure 4-1 of the datasheet.
How does the Power-On-Reset (POR) function behave during supply ramp-up in TL331LVQDBVRQ1?
The POR circuit in TL331LVQDBVRQ1 holds the output in high-impedance state until VCC reaches and stabilizes at ≥1.65 V. Once valid supply is detected, the output becomes active within 50 µs (typical power-on time). This prevents false triggering during cold-cranking dips or slow-battery-rise scenarios. POR behavior is intrinsic and requires no external components - verified in Sections 3, 4.1, and 5.8 of the official datasheet.
Is TL331LVQDBVRQ1 pin-compatible with the legacy TL331-Q1?
No, TL331LVQDBVRQ1 is not pin-compatible with TL331-Q1: TL331LVQDBVRQ1 uses a reversed input pinout (IN– on Pin 1, IN+ on Pin 3), whereas TL331-Q1 places IN+ on Pin 2 and IN– on Pin 3. This difference is explicitly noted in Figure 4-1 and Section 4.1 of the datasheet. Board redesign is required for migration, though functional equivalence exists in low-voltage operation.
What is the typical input bias current of TL331LVQDBVRQ1 across temperature?
The typical input bias current of TL331LVQDBVRQ1 is 5 pA at 25°C and remains below 100 pA across the full –40°C to +125°C operating range, as shown in Figure 5-6 of the datasheet. This ultra-low value minimizes voltage error in high-impedance sensing networks (e.g., thermistors, photodiodes, or battery voltage dividers), making TL331LVQDBVRQ1 especially suitable for precision analog front-ends in automotive applications.
TL331LVQDBVRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- Open-Collector, Rail-to-Rail
- 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
- :
- SOT-23-5
TL331LVQDBVRQ1 FAQ
1.How can I place an order for TL331LVQDBVRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TL331LVQDBVRQ1 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 TL331LVQDBVRQ1 reliable?
The price and inventory of TL331LVQDBVRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL331LVQDBVRQ1 is usually 5 days.
3.What payment methods are accepted for TL331LVQDBVRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL331LVQDBVRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL331LVQDBVRQ1?
TL331LVQDBVRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL331LVQDBVRQ1 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 TL331LVQDBVRQ1?
For technical support, including TL331LVQDBVRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL331LVQDBVRQ1 requirements.
6.How does Aetrix verify that TL331LVQDBVRQ1 is sourced from the original manufacturer or authorized distributors?
All TL331LVQDBVRQ1 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 TL331LVQDBVRQ1 meets industry standards.
7.What is the process for return or replacement of TL331LVQDBVRQ1?
All TL331LVQDBVRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TL331LVQDBVRQ1, 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 TL331LVQDBVRQ1 part is unused and in its original packaging.
Return procedure for TL331LVQDBVRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL331LVQDBVRQ1 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…
