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Texas Instruments TLV1391CDBVR
- Part No.:
- TLV1391CDBVR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TLV1391CDBVR.pdf
- Description:
- IC COMPARATOR 1 DIFF SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:9,920
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Product details
Overview
TLV1391CDBVR 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 precision voltage monitoring and overvoltage protection circuits.
For engineers reviewing the TLV1391CDBVR datasheet, TLV1391CDBVR pinout, TLV1391CDBVR application, or TLV1391CDBVR equivalent, this page delivers verified electrical specs, SOT-23-5 package layout, functional role in threshold detection, and validated alternative comparators for 3-V/5-V embedded systems.
Technical Context
The TLV1391CDBVR implements a bipolar-input differential comparator architecture with open-collector output, supporting TTL/CMOS-compatible logic interfacing via external pull-up. Its input stage operates down to ground, enabling direct sensing of 0-V reference points without level-shifting.
It is fully specified across 0°C to 70°C ambient temperature and supports dual supply configurations (e.g., ±3.5 V) within absolute maximum ratings, while maintaining sub-millivolt input offset voltage (1.5 mV typ) and nanosecond-scale propagation delay stability under 15-pF capacitive loading.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 7 V - enables direct integration into 3.3-V and 5-V logic domains without regulation. |
| Response Time | 0.7 µs typ at 3 V - supports fast edge detection in power sequencing and fault-response circuits. |
| Input Offset Voltage | 1.5 mV typ - ensures accurate threshold comparison for battery voltage monitoring and sensor trip points. |
| Supply Current | 80 µA typ - allows continuous operation in always-on battery-powered applications like IoT node supervisors. |
| Common-Mode Input Range | 0 V to VCC−2 V - permits ground-referenced input signals without biasing networks. |
| Output Type | Open-collector - enables wired-OR configuration and flexible logic-level translation via external pull-up. |
| Operating Temperature | 0°C to 70°C - qualified for commercial-grade industrial control and consumer electronics environments. |
Pinout & Package
SOT-23-5 (DBV) package: 2.9 mm × 1.6 mm × 1.45 mm body, surface-mount, tape-and-reel (3000 pcs), RoHS-compliant, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN−) | Inverting input | Accepts reference or feedback signal; differential pair input node with 5 nA max input bias current. |
| 2 (GND) | Ground reference | Return path for supply and inputs; common-mode range extends to this pin (0 V inclusive). |
| 3 (IN+) | Non-inverting input | Accepts sensed signal; matched to IN− for <9 mV max input offset across full temperature range. |
| 4 (VCC) | Positive supply | Single supply input (2–7 V); powers internal bipolar circuitry and defines output high-state ceiling. |
| 5 (OUT) | Open-collector output | Drives low when IN+ > IN−; requires external pull-up for logic-high assertion; sinks up to 20 mA. |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation | Functional down to 2-V supply - eliminates need for dedicated 5-V rails in modern mixed-signal systems. |
| Ground-sensing input | Common-mode range includes 0 V - enables direct interface with shunt-based current monitors and battery terminals. |
| Sub-µs propagation delay | 0.65 µs typ at 5 V - reduces timing uncertainty in power-good assertion and watchdog timeout circuits. |
| Ultra-low quiescent current | 80 µA typ - extends battery life in portable equipment where comparator remains active during sleep modes. |
| Robust ESD rating | 2 kV HBM - meets IEC 61000-4-2 Level 2 for industrial board-level surge immunity without added protection. |
Applications
| Battery Voltage Monitor | Power Sequencing Supervisor |
|---|---|
|
Use Scenario: Detecting undervoltage lockout (UVLO) and overvoltage conditions on Li-ion battery packs in portable medical devices. IC Role / Device Role / Timing Role: Differential comparator comparing battery voltage against precision reference to assert reset or disable charging. Use Value: 1.5 mV input offset ensures ±10 mV threshold accuracy at 3.6 V nominal, critical for cell-level protection. |
Use Scenario: Controlling startup order of multiple DC/DC converters in FPGA-based edge AI modules. IC Role / Device Role / Timing Role: Monitoring each rail's presence and asserting enable signals only after stable voltage is confirmed. Use Value: 0.7 µs response time guarantees sub-microsecond reaction to rail collapse, preventing brownout-induced state corruption. |
| Overcurrent Trip Detector | Window Comparator Front-End |
|
Use Scenario: Fast shutdown of motor drivers upon detecting excessive current via shunt resistor voltage drop. IC Role / Device Role / Timing Role: Comparing amplified shunt voltage against fixed threshold to trigger gate driver disable. Use Value: Ground-referenced input eliminates need for level-shifting op-amps, reducing BOM count and PCB area. |
Use Scenario: Validating analog sensor output stays within safe operating bounds before ADC sampling in industrial transmitters. IC Role / Device Role / Timing Role: One TLV1391CDBVR monitors upper limit, another lower limit; outputs feed logic OR gate. Use Value: Open-collector outputs allow direct wired-OR connection, eliminating external logic gates and saving space. |
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 offset (2 mV typ), same SOT-23-8 but different pinout. | Not pin-compatible; requires PCB redesign; suitable only where ultra-low power is not required. | Select LM393DR only if legacy design reuse or cost sensitivity outweighs power/performance needs. |
| TLV7011DBVR | Lower supply current (350 nA), slower response (2.5 µs), rail-to-rail input/output, push-pull output (no pull-up needed). | Push-pull output simplifies interface but prevents wired-OR; better for low-power sensor nodes than fast power supervision. | Choose TLV7011DBVR when nanowatt operation is mandatory and microsecond response is acceptable. |
Compared with TLV1391CDBVR, LM393DR trades speed and efficiency for broader legacy support, while TLV7011DBVR prioritizes ultra-low power over propagation delay - making TLV1391CDBVR optimal for 3-V/5-V systems needing both speed and sub-100-µA quiescent current.
Availability
TLV1391CDBVR is available at Aetrix Electronics and suitable for battery management, power sequencing, and overcurrent protection applications requiring stable component supply, long-term manufacturability, and commercial-temperature grade reliability.
Supply support for TLV1391CDBVR 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 decades of expertise in precision signal conditioning and power management ICs.
The TLV1391CDBVR belongs to TI's low-voltage comparator product line, engineered specifically for energy-efficient, single-supply systems operating at 3 V and below - targeting portable instrumentation, wearables, and industrial sensors.
FAQ
What is the maximum supply voltage for TLV1391CDBVR?
The absolute maximum supply voltage for TLV1391CDBVR is 7 V, as specified in the Absolute Maximum Ratings table. Operation beyond this value risks permanent damage. For reliable long-term use, TI recommends staying within the recommended operating range of 2 V to 7 V, with full electrical specifications guaranteed at 3 V and 5 V supplies.
Does TLV1391CDBVR support ground-referenced inputs?
Yes, TLV1391CDBVR supports ground-referenced inputs: its common-mode input voltage range explicitly includes 0 V (ground) across the full operating temperature range. This allows direct connection of one input to ground or to low-side current-sense shunts without external biasing networks.
What is the output configuration of TLV1391CDBVR?
TLV1391CDBVR features an open-collector output. It actively pulls the output pin low when the non-inverting input exceeds the inverting input; otherwise, the output floats and requires an external pull-up resistor to define the high logic state. This configuration enables wired-OR functionality and flexible voltage-level translation.
Is TLV1391CDBVR pin-compatible with LM393?
No, TLV1391CDBVR is not pin-compatible with LM393. TLV1391CDBVR uses a 5-pin SOT-23 (DBV) package with pins IN−, GND, IN+, VCC, OUT. LM393 typically uses an 8-pin SOIC or DIP package with different pin assignments and dual-channel topology. Direct replacement requires PCB layout modification.
What is the typical input offset voltage of TLV1391CDBVR at room temperature?
The typical input offset voltage of TLV1391CDBVR at 25°C is 1.5 mV, with a maximum of 9 mV across the full operating temperature range (0°C to 70°C). This specification is measured under standard test conditions (VCC = 3 V or 5 V) and directly impacts threshold accuracy in precision monitoring applications.
TLV1391CDBVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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
TLV1391CDBVR FAQ
1.How can I place an order for TLV1391CDBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV1391CDBVR 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 TLV1391CDBVR reliable?
The price and inventory of TLV1391CDBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV1391CDBVR is usually 5 days.
3.What payment methods are accepted for TLV1391CDBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV1391CDBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV1391CDBVR?
TLV1391CDBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV1391CDBVR 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 TLV1391CDBVR?
For technical support, including TLV1391CDBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV1391CDBVR requirements.
6.How does Aetrix verify that TLV1391CDBVR is sourced from the original manufacturer or authorized distributors?
All TLV1391CDBVR 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 TLV1391CDBVR meets industry standards.
7.What is the process for return or replacement of TLV1391CDBVR?
All TLV1391CDBVR units undergo pre-shipment inspection (PSI). If there is an issue with TLV1391CDBVR, 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 TLV1391CDBVR part is unused and in its original packaging.
Return procedure for TLV1391CDBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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