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Texas Instruments TLV9021DBVR
- Part No.:
- TLV9021DBVR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TLV9021DBVR.pdf
- Description:
- SINGLE LOW-VOLTAGE COMPARATOR WI
- Quantity:
- Payment:
- Shipping:
Inventory:2,434
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Product details
Overview
TLV9021DBVR from Texas Instruments is a single-channel, open-drain precision comparator with rail-to-rail fault-tolerant inputs, 300 µV input offset voltage, 100 ns propagation delay, and 16 µA quiescent current per channel. It operates from 1.65 V to 5.5 V and supports industrial temperature range (–40°C to +125°C), enabling precise voltage monitoring in motor drive overcurrent detection circuits.
For engineers reviewing the TLV9021DBVR datasheet, TLV9021DBVR pinout, TLV9021DBVR application, or TLV9021DBVR equivalent, key selection considerations include its open-drain output architecture, 6 V fault-tolerant input capability, low-power operation at 1.65 V supply, and SOT-23-5 package compatibility with space-constrained PCB layouts.
Technical Context
The TLV9021DBVR implements a high-speed, low-power comparator core with ESD-protected, fault-tolerant input stage capable of accepting voltages up to 6 V regardless of supply rail-enabling direct sensing of higher-voltage signals without external level-shifting. Its internal biasing ensures stable operation across the full –40°C to +125°C range.
As part of the TLV902x family, it shares identical electrical characteristics with TLV9020 but uses the alternate North West pinout (IN– on Pin 3, IN+ on Pin 4, OUT on Pin 1) in the DBV (SOT-23-5) package. The open-drain output requires an external pull-up resistor and supports mixed-voltage logic interfacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.65 V to 5.5 V - enables direct operation from Li-ion, 3.3 V, or 5 V rails without regulation |
| Input Offset Voltage | ±0.3 mV (typ) - supports accurate threshold detection within ±3 mV at 10× gain |
| Propagation Delay | 100 ns (high-to-low, 5 V supply) - suitable for sub-5 MHz signal edge detection |
| Quiescent Current | 16 µA per channel - allows battery-powered designs to achieve >1-year standby life |
| Input Common-Mode Range | (V–) – 0.2 V to (V+) + 0.2 V - permits rail-to-rail input operation including beyond supply rails |
| Fault-Tolerant Input Rating | –0.3 V to +6 V relative to V– - eliminates need for external clamping diodes in 24 V sensor interfaces |
| ESD Rating (HBM) | ±2000 V - meets IEC 61000-4-2 Level 2 system-level ESD robustness requirements |
Pinout & Package
TLV9021DBVR is housed in a 5-pin SOT-23 (DBV) package measuring 1.60 mm × 2.90 mm, optimized for automated placement and thermal performance (RθJA = 223.7°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Open-drain output - must be pulled up externally; sinks current only; compatible with 1.8 V/3.3 V/5 V logic |
| 2 | V– | Negative supply terminal - connects to GND or negative rail; thermal pad (if present) ties directly to this pin |
| 3 | IN– | Inverting input - accepts analog signals up to 6 V above V– without damage or phase inversion |
| 4 | IN+ | Non-inverting input - used for reference or signal comparison; matched input capacitance (2 pF diff / 3 pF cm) |
| 5 | V+ | Positive supply terminal - supplies internal bias; decoupling capacitor required within 10 mm |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail fault-tolerant inputs | Withstands –0.3 V to +6 V on IN+/IN– regardless of V+ or V– - enables direct connection to 24 V sensors or automotive battery lines |
| Ultra-low quiescent current | 16 µA per channel at 25°C - reduces power budget impact in always-on monitoring systems |
| Precision offset voltage | ±0.3 mV typical - minimizes false triggering in high-resolution threshold applications like battery cell voltage supervision |
| Fast propagation delay | 100 ns high-to-low transition - supports real-time overvoltage/overcurrent response in motor control protection loops |
| Industrial temperature range | Specified from –40°C to +125°C - validated for use in under-hood automotive, factory automation, and industrial motor drives |
Applications
| Motor Overcurrent Protection | Appliance Door Interlock Monitoring |
|---|---|
Use Scenario: Detects shunt voltage exceeding safe limit during motor stall or short-circuit events in BLDC driver boards. IC Role / Device Role / Timing Role: Precision comparator compares amplified shunt voltage against fixed reference; triggers shutdown via microcontroller interrupt within 100 ns. Use Value: Enables <100 ns fault response time while consuming only 16 µA - critical for IGBT/MOSFET gate driver safety compliance. | Use Scenario: Monitors magnetic reed switch closure in washing machine door latch assemblies to prevent drum rotation when open. IC Role / Device Role / Timing Role: Compares reed switch output against internal reference; provides clean digital enable/disable signal to main controller. Use Value: Fault-tolerant inputs tolerate EMI-induced transients on long harnesses; 1.65 V operation supports low-power MCU sleep modes. |
| Factory Automation Sensor Interface | Infotainment System Power Sequencing |
Use Scenario: Interfaces 0–10 V analog pressure sensor outputs to PLC input modules in harsh industrial environments. IC Role / Device Role / Timing Role: Acts as voltage window detector or level translator between sensor and isolated digital interface. Use Value: 6 V input tolerance eliminates external protection components; 125°C rating ensures reliability near motors and drives. | Use Scenario: Validates DC/DC converter output stability before enabling downstream processors in automotive cluster displays. IC Role / Device Role / Timing Role: Compares regulated 5 V rail against precision reference to assert "power good" signal to SoC. Use Value: Low offset (±0.3 mV) ensures accurate 4.95–5.05 V window detection; open-drain output simplifies OR-ing with other PG signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV9021DCKR | Identical electrical specs; uses SC-70-5 (DCK) package (1.25 mm × 2.00 mm), smaller footprint than DBV | Preferred for ultra-dense layouts where board area is constrained; thermal resistance slightly higher (RθJA = 238.5°C/W) | Select DCKR when PCB real estate is premium and thermal margin allows; verify solder paste volume for SC-70 reflow. |
| LMV331M5X | Higher offset (±3.5 mV), slower propagation (300 ns), no fault-tolerant inputs; 1.8–5.5 V supply | Not suitable for 6 V sensor interfaces or high-accuracy thresholds; lacks industrial temp rating (only –40°C to +85°C) | Use only in cost-sensitive, non-critical consumer applications where 6 V tolerance and ±0.3 mV offset are not required. |
Compared with TLV9021DCKR, TLV9021DBVR offers better thermal performance (223.7 vs. 238.5°C/W) and mechanical robustness in SOT-23 handling; versus LMV331M5X, it delivers 11× lower offset, 3× faster response, and full fault tolerance-making it essential for industrial and automotive voltage monitoring.
Availability
TLV9021DBVR is available at Aetrix Electronics and suitable for motor drives, building automation, and infotainment systems requiring stable component supply, long-term manufacturability, and guaranteed industrial temperature performance.
Supply support for TLV9021DBVR 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 personal electronics markets.
The TLV902x family was designed specifically for precision, low-power voltage monitoring in electrically noisy, high-reliability environments-including motor control, factory automation, and automotive body electronics.
FAQ
What is the maximum input voltage the TLV9021DBVR can tolerate without damage?
The TLV9021DBVR supports input voltages from –0.3 V to +6 V relative to the V– pin, independent of supply voltage. This fault-tolerance eliminates external clamping components when interfacing with 24 V sensors or battery-sensed signals, and is verified across the full –40°C to +125°C operating range.
Does TLV9021DBVR require a pull-up resistor on its output?
Yes, TLV9021DBVR features an open-drain output and requires an external pull-up resistor to define the high-state voltage level. The value depends on speed and load: 2.5 kΩ is recommended for 5 V logic with 100 ns timing; higher values (e.g., 10 kΩ) reduce current consumption but increase rise time.
Can TLV9021DBVR operate from a 1.8 V supply?
Yes, TLV9021DBVR is fully specified from 1.65 V to 5.5 V. At 1.8 V, it maintains 100 ns propagation delay, ±0.3 mV offset, and 16 µA quiescent current - making it ideal for ultra-low-voltage IoT sensor nodes and battery-powered equipment.
How does the TLV9021DBVR pinout differ from TLV9020DBVR?
TLV9021DBVR uses the North West pinout (IN– on Pin 3, IN+ on Pin 4, OUT on Pin 1), whereas TLV9020DBVR uses the Standard South East pinout (IN+ on Pin 1, IN– on Pin 3, OUT on Pin 4). Both share identical electrical behavior but are not pin-compatible - PCB layout must match the specific variant.
Is TLV9021DBVR qualified for automotive applications?
TLV9021DBVR is not AEC-Q200 qualified, but it is rated for the industrial temperature range (–40°C to +125°C) and exhibits robust ESD performance (±2000 V HBM). For non-safety-critical automotive subsystems (e.g., body control, HVAC), it may be deployed subject to system-level qualification - consult TI's Automotive Product Disclaimer for guidance.
TLV9021DBVR 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-Drain, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 1.65V ~ 5.5V
- :
- 1.5mV @ 5V
- Voltage - Input Offset (Max):
- 5pA (Typ)
- Current - Input Bias (Max):
- 100mA @ 5V
- Current - Output (Typ):
- 30µA
- Current - Quiescent (Max):
- 70dB CMRR, 95dB PSRR
- CMRR, PSRR (Typ):
- 100ns (Typ)
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SOT-23-5
TLV9021DBVR FAQ
1.How can I place an order for TLV9021DBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV9021DBVR 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 TLV9021DBVR reliable?
The price and inventory of TLV9021DBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV9021DBVR is usually 5 days.
3.What payment methods are accepted for TLV9021DBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV9021DBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV9021DBVR?
TLV9021DBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV9021DBVR 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 TLV9021DBVR?
For technical support, including TLV9021DBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV9021DBVR requirements.
6.How does Aetrix verify that TLV9021DBVR is sourced from the original manufacturer or authorized distributors?
All TLV9021DBVR 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 TLV9021DBVR meets industry standards.
7.What is the process for return or replacement of TLV9021DBVR?
All TLV9021DBVR units undergo pre-shipment inspection (PSI). If there is an issue with TLV9021DBVR, 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 TLV9021DBVR part is unused and in its original packaging.
Return procedure for TLV9021DBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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