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Texas Instruments TLV1391CDBVRE4
- Part No.:
- TLV1391CDBVRE4
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TLV1391CDBVRE4.pdf
- Description:
- IC COMPARATOR 1 DIFF SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,616
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Product details
Overview
TLV1391CDBVRE4 from Texas Instruments is a single high-speed differential comparator optimized for low-voltage, single-supply operation (2 V to 7 V), featuring 0.7 µs typical response time at 3 V, 80 µA typical supply current, and rail-to-rail input common-mode range including ground - used in battery-powered voltage monitoring and precision threshold detection circuits.
For engineers reviewing the TLV1391CDBVRE4 datasheet, TLV1391CDBVRE4 pinout, TLV1391CDBVRE4 application, or TLV1391CDBVRE4 equivalent, key selection criteria include input offset voltage (≤5 mV typ), output drive capability (±500 µA), thermal performance (θJA = 206°C/W), and SOT-23-5 package compatibility with space-constrained PCB layouts.
Technical Context
The TLV1391CDBVRE4 employs a bipolar process architecture enabling fast propagation delay and stable operation across 2–7 V supply rails. Its input stage supports common-mode voltages down to ground and up to VCC − 2 V, while the open-collector output allows flexible pull-up configuration and direct interfacing with TTL/CMOS logic.
Designed as a drop-in upgrade to LM393 in 3-V/5-V systems, it delivers improved speed (0.65 µs typ at 5 V) and lower quiescent current without requiring external biasing or level-shifting circuitry - critical for portable instrumentation and power management subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 7 V - enables direct operation from single-cell Li-ion (3.0–3.7 V) or dual-AA (3 V) supplies without regulation. |
| Response Time | 0.7 µs typ at 3 V - supports real-time overvoltage/undervoltage fault detection in DC-DC converters and battery protection ICs. |
| Input Offset Voltage | 5 mV max at 25°C - ensures accurate 10-mV-level threshold sensing in precision analog front-ends. |
| Supply Current | 150 µA max over full temperature range - extends battery life in always-on sensor nodes and IoT endpoint devices. |
| Common-Mode Input Range | 0 V to VCC − 2 V - permits direct connection to ground-referenced signals and rail-sensing applications without attenuators. |
| Output Sink Current | 500 µA min at VOL = 300 mV - drives standard 10-kΩ pull-up resistors to 3.3 V or 5 V logic levels reliably. |
| Ambient Temp Range | 0°C to 70°C - qualified for commercial-grade embedded control and industrial HMI interfaces. |
Pinout & Package
SOT-23-5 (DBV) package: 2.9 mm × 1.6 mm footprint, 1.45 mm max height, lead-free NiPdAu finish, moisture sensitivity level 1 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN−) | Inverting input | Differential reference node; accepts signal below threshold for active-low output assertion. |
| 2 (GND) | Ground reference | Power return path and input common-mode baseline; must be low-impedance for noise immunity. |
| 3 (IN+) | Non-inverting input | Signal input node; compared against IN− to determine output polarity and state transition. |
| 4 (VCC) | Positive supply | Single supply rail (2–7 V); powers internal biasing and output stage; decoupling capacitor required. |
| 5 (OUT) | Open-collector output | Active-low output requiring external pull-up; compatible with 1.8 V to 5 V logic families via resistor selection. |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation | Functional down to 2 V supply - eliminates need for LDO pre-regulation in energy-harvesting and coin-cell systems. |
| Rail-to-rail input range | Includes ground and extends to VCC − 2 V - simplifies sensor interface design by removing input biasing networks. |
| High-speed response | 0.65 µs typ at 5 V - meets timing requirements for fast-switching power supply feedback loops and motor stall detection. |
| Low quiescent current | 80 µA typ at 3 V - reduces standby power in battery-backed real-time clocks and supervisory circuits. |
| Industry-standard pinout | Matches LM393 footprint in SOT-23-5 - enables drop-in replacement without PCB redesign in legacy designs. |
Applications
| Battery Voltage Monitor | DC-DC Converter Feedback |
|---|---|
Use Scenario: Monitoring lithium-ion cell voltage during charging/discharging to trigger cutoff or alert thresholds. IC Role / Device Role / Timing Role: Differential comparator detecting when cell voltage crosses 2.5 V or 4.2 V thresholds. Use Value: Enables precise end-of-charge and over-discharge protection using only one external resistor divider and no op-amp buffering. | Use Scenario: Providing fast overvoltage protection in buck converter output stage to prevent downstream component damage. IC Role / Device Role / Timing Role: High-speed comparator comparing regulated output against reference to assert shutdown signal within 1 µs. Use Value: Reduces fault response latency by >50% versus LM393, improving system robustness under transient load conditions. |
| Microcontroller Wake-Up Trigger | Industrial Sensor Threshold Detection |
Use Scenario: Detecting motion-triggered analog signal from PIR sensor to wake low-power MCU from sleep mode. IC Role / Device Role / Timing Role: Low-current comparator generating interrupt pulse when sensor output exceeds 100 mV threshold. Use Value: Draws <100 µA continuously - extends shelf life of sealed wireless sensors powered by CR2032 batteries. | Use Scenario: Converting 4–20 mA loop current into digital alarm signal for temperature or pressure transducers. IC Role / Device Role / Timing Role: Precision comparator with <5 mV offset detecting deviation beyond ±2% setpoint tolerance. Use Value: Eliminates need for trimming potentiometers or calibration software due to factory-trimmed input offset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar differential comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393DR | Higher supply current (500 µA typ), slower response (1.3 µs), wider VCC range (2–36 V) | Preferred in high-voltage industrial controls where speed and power efficiency are secondary to ruggedness | Select LM393DR only when operating above 7 V or requiring extended temperature range (−40°C to 85°C) with same package |
| TLV7211IDBVR | Lower supply current (35 µA typ), rail-to-rail output, but slower (1.2 µs) and narrower VCC (1.8–5.5 V) | Better suited for ultra-low-power sensor nodes where output drive strength is less critical than battery longevity | Choose TLV7211IDBVR when system supply is ≤5.5 V and sub-50-µA quiescent current is mandatory |
Compared with LM393DR and TLV7211IDBVR, the TLV1391CDBVRE4 uniquely balances speed (0.7 µs), low power (80 µA), and wide supply range (2–7 V) in a compact SOT-23-5 package - making it optimal for cost-sensitive, space-constrained 3-V/5-V embedded systems requiring fast, reliable threshold decisions.
Availability
TLV1391CDBVRE4 is available at Aetrix Electronics and suitable for battery management systems, power supply supervision, microcontroller wake-up circuits, and industrial sensor interfaces requiring stable component supply and long-term manufacturability.
Supply support for TLV1391CDBVRE4 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 specializing in analog, embedded processing, and connectivity technologies with over 90 years of innovation in high-reliability components.
The TLV1391CDBVRE4 belongs to TI's precision analog comparator product line, engineered specifically for low-voltage, single-supply applications where speed, power efficiency, and input flexibility are critical - such as portable medical devices and smart energy meters.
FAQ
What is the maximum supply voltage rating for TLV1391CDBVRE4?
The absolute maximum supply voltage for TLV1391CDBVRE4 is 7 V. Exceeding this value may cause permanent damage. The recommended operating range is 2 V to 7 V, with full electrical specifications guaranteed at both 3 V and 5 V supply conditions per the datasheet. Operation at 7 V is permissible only under controlled thermal conditions and with proper decoupling.
Does TLV1391CDBVRE4 support ground-referenced inputs?
Yes, TLV1391CDBVRE4 supports ground-referenced inputs: its common-mode input voltage range includes 0 V (ground) and extends up to VCC − 2 V. This allows direct connection of single-ended signals referenced to system ground without level-shifting circuitry - a key advantage over comparators requiring input biasing above ground.
What is the output configuration of TLV1391CDBVRE4 and how should it be used?
TLV1391CDBVRE4 features an open-collector output (pin 5). It requires an external pull-up resistor to a logic-compatible voltage (e.g., 3.3 V or 5 V). This configuration enables wired-OR logic, mixed-voltage interfacing, and direct connection to microcontroller interrupt pins. Do not leave the output floating; typical pull-up values range from 2.2 kΩ to 10 kΩ depending on speed and drive requirements.
How does TLV1391CDBVRE4 compare to LM393 in terms of power consumption and speed?
TLV1391CDBVRE4 consumes 80 µA typical supply current - less than 20% of LM393's 500 µA typical - and achieves 0.7 µs response time at 3 V, nearly twice as fast as LM393's 1.3 µs. Both share SOT-23-5 pinout, making TLV1391CDBVRE4 a true drop-in upgrade for 3-V/5-V systems where power and speed are critical.
Is TLV1391CDBVRE4 RoHS compliant and what is its moisture sensitivity level?
Yes, TLV1391CDBVRE4 is RoHS compliant with NiPdAu lead finish and rated MSL Level-1 (260°C peak reflow, unlimited floor life). It ships in tape-and-reel packaging (3000 units per reel) with Q3 pin-1 orientation, conforming to JEDEC MO-178 standards. Full compliance documentation is available through TI's Quality & Environmental page.
TLV1391CDBVRE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Differential
- Number of Elements:
- 1
- Output Type:
- Open-Collector
- Voltage - Supply, Single/Dual (±):
- 2V ~ 7V
- :
- 5mV @ 5V
- Voltage - Input Offset (Max):
- 0.25µA @ 5V
- Current - Input Bias (Max):
- 20mA
- Current - Output (Typ):
- 175µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SOT-23-5
TLV1391CDBVRE4 FAQ
1.How can I place an order for TLV1391CDBVRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV1391CDBVRE4 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 TLV1391CDBVRE4 reliable?
The price and inventory of TLV1391CDBVRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV1391CDBVRE4 is usually 5 days.
3.What payment methods are accepted for TLV1391CDBVRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV1391CDBVRE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV1391CDBVRE4?
TLV1391CDBVRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV1391CDBVRE4 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 TLV1391CDBVRE4?
For technical support, including TLV1391CDBVRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV1391CDBVRE4 requirements.
6.How does Aetrix verify that TLV1391CDBVRE4 is sourced from the original manufacturer or authorized distributors?
All TLV1391CDBVRE4 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 TLV1391CDBVRE4 meets industry standards.
7.What is the process for return or replacement of TLV1391CDBVRE4?
All TLV1391CDBVRE4 units undergo pre-shipment inspection (PSI). If there is an issue with TLV1391CDBVRE4, 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 TLV1391CDBVRE4 part is unused and in its original packaging.
Return procedure for TLV1391CDBVRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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