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Texas Instruments TLV1391CDBVTE4
- Part No.:
- TLV1391CDBVTE4
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TLV1391CDBVTE4.pdf
- Description:
- IC COMPARATOR 1 DIFF SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,306
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Product details
Overview
TLV1391CDBVTE4 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, 80 µA typical supply current, and rail-to-rail input common-mode range including ground - used in precision voltage monitoring and battery-powered sensor interface circuits.
For engineers reviewing the TLV1391CDBVTE4 datasheet, TLV1391CDBVTE4 pinout, TLV1391CDBVTE4 application, or TLV1391CDBVTE4 equivalent, this page delivers verified electrical specs, SOT-23-5 package details, functional role in overvoltage detection and zero-crossing circuits, and two validated alternative comparators with documented parameter differences.
Technical Context
The TLV1391CDBVTE4 employs a bipolar process architecture enabling fast propagation delay and stable operation at 3-V and 5-V supplies. Its open-collector output supports wired-OR logic and level-shifting interfaces, while the input stage accepts common-mode voltages down to ground - critical for direct connection to single-ended sensors.
It operates across 0°C to 70°C ambient temperature, with fully specified performance at both 3 V and 5 V. Input offset voltage is 1.5–5 mV (typ), and low-level output voltage is 120–300 mV at 500 µA sink current - ensuring reliable TTL/CMOS logic interfacing without external pull-ups in many configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 7 V - enables direct use in Li-ion battery systems (2.7–4.2 V) and 3.3-V/5-V logic domains without regulation. |
| Response Time | 0.7 µs (typ @ 3 V) - supports real-time threshold detection in motor control feedback and power sequencing. |
| Supply Current | 80 µA (typ) - allows integration into always-on wake-up circuits with sub-100-µA quiescent budget. |
| Input Common-Mode Range | 0 V to VCC−2 V - permits direct sensing of ground-referenced signals like thermistor dividers or battery terminals. |
| Output Type | Open-collector - enables flexible pull-up selection (e.g., to 1.8 V, 3.3 V, or 5 V) and multi-comparator wired-OR outputs. |
| Input Offset Voltage | 1.5–5 mV (typ @ 25°C) - ensures ≤5-mV decision error in precision window comparators or reference monitoring. |
| Operating Temperature | 0°C to 70°C - qualified for commercial-grade embedded control, industrial HMI, and consumer power management. |
Pinout & Package
SOT-23-5 (DBV) package: 2.9 mm × 1.6 mm footprint, 1.45 mm max height, surface-mount, RoHS-compliant, moisture sensitivity level 1 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN−) | Inverting input | Differential input node; referenced against IN+ to determine output state; accepts voltages from 0 V to VCC−2 V. |
| 2 (GND) | Ground reference | Power return path and common-mode baseline; required for proper biasing of input stage and output transistor. |
| 3 (IN+) | Non-inverting input | Differential input node; voltage > IN− by ≥1.5 mV forces OUT high (open); used for threshold or reference signal. |
| 4 (VCC) | Positive supply | Single supply rail (2–7 V); powers internal circuitry and defines output high impedance state when pulled externally. |
| 5 (OUT) | Open-collector output | Active-low sinking node; requires external pull-up resistor to define logic-high level and drive load capacitance. |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation | Functional at 2 V supply - eliminates need for LDO pre-regulation in coin-cell or energy-harvesting systems. |
| Rail-to-rail input capability | Common-mode range includes ground - enables direct interface with 0-V-referenced sensors (e.g., current-sense amps). |
| Sub-microsecond response | 0.7 µs propagation delay - supports fast overvoltage shutdown in DC-DC converters and battery protection ICs. |
| Ultra-low quiescent current | 80 µA typical ICC - extends battery life in portable medical devices and IoT edge nodes operating in sleep-wake cycles. |
| Specified at 3 V and 5 V | Full parametric validation at both voltages - reduces design risk in mixed-voltage systems without derating assumptions. |
Applications
| Battery Voltage Monitor | Motor Overcurrent Protection |
|---|---|
|
Use Scenario: Detecting cell under-voltage (<2.8 V) or over-voltage (>4.3 V) in 1S Li-ion packs using resistive divider inputs. IC Role / Device Role / Timing Role: Single comparator configured as high-side or low-side threshold detector with hysteresis; output drives enable/disable logic or MCU interrupt. Use Value: Enables precise, low-power battery cutoff without microcontroller intervention - critical for safety-critical portable electronics. |
Use Scenario: Monitoring shunt voltage across motor driver to trigger shutdown when current exceeds 5 A threshold. IC Role / Device Role / Timing Role: Fast-response comparator comparing shunt voltage to precision reference; output directly gates gate driver disable line. Use Value: 0.7 µs response ensures motor FETs turn off before fault current reaches destructive levels - improves system reliability. |
| Zero-Crossing Detector | Power Sequencing Supervisor |
|
Use Scenario: Converting AC line waveform into clean digital zero-crossing pulses for TRIAC dimming or synchronous rectification. IC Role / Device Role / Timing Role: Differential comparator with AC-coupled input and hysteresis; output toggles on each polarity transition crossing ground. Use Value: Ground-inclusive input range allows direct AC coupling without DC biasing components - reduces BOM count and layout area. |
Use Scenario: Validating correct ramp-up order of multiple supply rails (e.g., 1.2 V before 3.3 V) in FPGA or SoC power systems. IC Role / Device Role / Timing Role: Multiple TLV1391CDBVTE4 units monitor individual rail voltages; outputs feed AND logic to generate global "power good" signal. Use Value: Open-collector outputs allow simple wired-OR combination - avoids need for additional logic gates or supervisor ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar differential comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393DR | Slower response (1.3 µs typ), higher ICC (500 µA typ), wider VCC range (2–36 V), no guaranteed 3-V spec. | Acceptable in non-critical timing apps (e.g., basic LED indicators); unsuitable for <1 µs response or <100 µA power budgets. | Select LM393DR only if legacy design reuse or wide-supply tolerance (>15 V) is required - not for new ultra-low-power designs. |
| TLC3702CDR | CMOS input (pA bias), lower ICC (20 µA typ), but slower (2.5 µs typ), no 3-V characterization, limited sink current (4 mA). | Better for high-impedance sensor inputs; inadequate for driving heavy loads or fast switching in power control loops. | Choose TLC3702CDR when input bias must be <100 pA and speed is secondary - avoid where <1 µs response or 500 µA sink is needed. |
Compared with TLV1391CDBVTE4, LM393DR trades speed and quiescent current for ruggedness and voltage range, while TLC3702CDR sacrifices speed and output drive for ultra-low input bias - making TLV1391CDBVTE4 the optimal balance for modern 3-V/5-V embedded comparator needs.
Availability
TLV1391CDBVTE4 is available at Aetrix Electronics and suitable for battery management systems, motor control safety monitors, zero-crossing detection circuits, and power sequencing supervisors requiring stable component supply and commercial-temperature grade assurance.
Supply support for TLV1391CDBVTE4 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 U.S.-based semiconductor company specializing in analog and embedded processing technologies, with leadership in precision signal chain and power management solutions.
The TLV1391CDBVTE4 belongs to TI's low-voltage comparator product line, designed specifically for energy-efficient, single-supply applications in portable, industrial, and automotive subsystems where speed, accuracy, and low power coexist.
FAQ
What is the maximum supply voltage rating for TLV1391CDBVTE4?
The absolute maximum supply voltage for TLV1391CDBVTE4 is 7 V. Exceeding this value risks permanent damage. For reliable operation, TI specifies recommended VCC between 2 V and 7 V, with full electrical characterization at 3 V and 5 V - making it ideal for standard logic rails and single-cell battery systems.
Does TLV1391CDBVTE4 support rail-to-rail input operation?
TLV1391CDBVTE4 supports a common-mode input voltage range from 0 V to VCC−2 V, which includes ground but does not extend to the positive rail. This allows direct interfacing with ground-referenced signals (e.g., current-sense amplifiers or resistive sensors) without level-shifting circuitry - a key advantage over comparators requiring input bias above ground.
What is the output configuration of TLV1391CDBVTE4 and how should it be used?
TLV1391CDBVTE4 features an open-collector output (pin 5). It actively sinks current when triggered but presents high impedance when inactive - requiring an external pull-up resistor to define the logic-high voltage level. This configuration enables wired-OR logic, level translation, and flexible interface with 1.8-V, 3.3-V, or 5-V digital systems.
Is TLV1391CDBVTE4 suitable for use in battery-powered applications?
Yes, TLV1391CDBVTE4 is highly suitable for battery-powered applications due to its 80 µA typical supply current and operation down to 2 V. Its low ICC and ground-inclusive input range allow direct integration into coin-cell or Li-ion systems for functions like low-battery warning, charger enable/disable, or sensor wake-up - extending operational lifetime without compromising response time.
How does the response time of TLV1391CDBVTE4 vary with supply voltage?
TLV1391CDBVTE4 response time improves slightly with higher supply voltage: 0.7 µs typical at 3 V, 0.65 µs at 5 V (100-mV step, 5-mV overdrive). This voltage-dependent speed enhancement supports tighter timing margins in 5-V systems while maintaining robust sub-microsecond performance at 3 V - critical for consistent behavior across mixed-rail designs.
TLV1391CDBVTE4 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
TLV1391CDBVTE4 FAQ
1.How can I place an order for TLV1391CDBVTE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV1391CDBVTE4 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 TLV1391CDBVTE4 reliable?
The price and inventory of TLV1391CDBVTE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV1391CDBVTE4 is usually 5 days.
3.What payment methods are accepted for TLV1391CDBVTE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV1391CDBVTE4 transactions.
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4.How is shipping managed for TLV1391CDBVTE4?
TLV1391CDBVTE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV1391CDBVTE4 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 TLV1391CDBVTE4?
For technical support, including TLV1391CDBVTE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV1391CDBVTE4 requirements.
6.How does Aetrix verify that TLV1391CDBVTE4 is sourced from the original manufacturer or authorized distributors?
All TLV1391CDBVTE4 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 TLV1391CDBVTE4 meets industry standards.
7.What is the process for return or replacement of TLV1391CDBVTE4?
All TLV1391CDBVTE4 units undergo pre-shipment inspection (PSI). If there is an issue with TLV1391CDBVTE4, 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 TLV1391CDBVTE4 part is unused and in its original packaging.
Return procedure for TLV1391CDBVTE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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