My Inquiry
My Account
Texas Instruments TLV1391IDBVR
- Part No.:
- TLV1391IDBVR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TLV1391IDBVR.pdf
- Description:
- IC COMPARATOR 1 DIFF SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:11,187
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLV1391IDBVR 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 battery-level detection circuits.
For engineers reviewing the TLV1391IDBVR datasheet, TLV1391IDBVR pinout, TLV1391IDBVR application, or TLV1391IDBVR equivalent, key selection criteria include temperature range (−40°C to 85°C), SOT-23-5 package compatibility, output drive capability (600 µA sink at 5 V), input offset voltage (≤9 mV over full temperature range), and low-power performance in portable and industrial sensing systems.
Technical Context
The TLV1391IDBVR implements a bipolar comparator core with enhanced speed and low-voltage operation, enabling reliable decision-making in 3-V and 5-V systems where legacy LM393 devices fall short in response time and supply current. Its input stage supports common-mode voltages down to ground, eliminating level-shifting requirements in single-supply sensor interfaces.
Output stage is open-collector, requiring an external pull-up resistor to define logic-high voltage and load current capability; it delivers up to 600 µA sink current at 5 V while maintaining 120–300 mV low-level output voltage across temperature. The device is fully specified over −40°C to 85°C and qualified for industrial applications.
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 systems without regulation overhead |
| Response Time | 0.7 µs typ at 3 V - supports fast threshold detection in battery fuel gauging and overvoltage protection |
| Supply Current | 80 µA typ, 150 µA max - extends battery life in always-on monitoring applications |
| Input Offset Voltage | ≤9 mV over full temperature range - ensures stable trip-point accuracy without calibration |
| Common-Mode Input Range | 0 V to VCC−2 V - accepts ground-referenced inputs without biasing resistors |
| Output Sink Current | 600 µA min at 5 V - drives standard logic inputs and small LEDs directly |
| Operating Temperature | −40°C to +85°C - qualified for industrial and automotive under-hood environments |
Pinout & Package
SOT-23-5 (DBV) package: 2.9 mm × 1.6 mm × 1.45 mm body, surface-mount, lead-free (NiPdAu/Sn), moisture sensitivity level 1, rated for reflow up to 260°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN−) | Inverting input | Differential reference node; accepts signals up to VCC or down to −0.3 V |
| 2 (GND) | Ground / VCC− | Power return path and negative supply rail for single-supply operation |
| 3 (IN+) | Non-inverting input | Signal-sense node; common-mode range includes ground for direct sensor interfacing |
| 4 (VCC+) | Positive supply | Accepts 2–7 V; powers internal bipolar circuitry and defines output high level via external pull-up |
| 5 (OUT) | Open-collector output | Active-low output requiring external pull-up; sinks up to 600 µA at 5 V |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation | Functional down to 2 V supply - eliminates need for voltage boosters in coin-cell or Li-ion systems |
| Rail-to-rail input range | Includes ground - simplifies interface with resistive dividers, thermistors, and current-sense amplifiers |
| Fast propagation delay | 0.65 µs typ at 5 V - enables real-time fault detection in power supplies and motor controllers |
| Low quiescent current | 80 µA typ - reduces system standby power by >5× versus LM393 in battery-powered nodes |
| Industrial temperature grade | −40°C to +85°C - supports deployment in uncontrolled ambient environments without derating |
Applications
| Battery Voltage Monitor | Overvoltage Protection Circuit |
|---|---|
Use Scenario: Detecting low battery condition in portable medical devices using a resistive divider on a 3.7-V Li-ion cell. IC Role / Device Role / Timing Role: Single-supply comparator comparing divided battery voltage against a stable reference to assert low-battery flag. Use Value: 0.7 µs response ensures immediate shutdown before brownout; 80 µA ICC extends runtime between charges. | Use Scenario: Preventing damage to downstream 3.3-V logic from accidental 5-V rail misconnection in modular test equipment. IC Role / Device Role / Timing Role: Threshold detector asserting fault signal when input exceeds 3.6 V, triggering MOSFET gate cutoff. Use Value: Input common-mode range to ground allows direct sensing without level shift; 600 µA sink drives logic-level optocoupler directly. |
| Temperature Threshold Detector | Power Supply Sequencing Monitor |
Use Scenario: Monitoring NTC thermistor output in HVAC control board to trigger fan activation above 60°C. IC Role / Device Role / Timing Role: Precision comparator comparing thermistor voltage against fixed reference generated by resistor divider. Use Value: ≤9 mV input offset ensures ±0.5°C trip-point stability over full temperature range without trimming. | Use Scenario: Verifying 1.2-V FPGA core rail reaches regulation before enabling 3.3-V I/O rail in embedded computing module. IC Role / Device Role / Timing Role: Dual-rail monitor using two TLV1391IDBVR units to generate enable signals with precise hysteresis. Use Value: Independent 2–7 V supply range per comparator allows direct connection to each rail; SOT-23-5 footprint saves PCB area vs dual comparators. |
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 offset (±2 mV min), only specified down to 2 V with degraded performance | Not suitable for <1 µs timing-critical detection or sub-100 µA battery systems | Select TLV1391IDBVR when speed, low ICC, or guaranteed 3-V operation is required |
| TLV7211CDBVR | CMOS input (pA bias), rail-to-rail output, but slower (1.5 µs), higher ICC (120 µA), narrower temp range (0°C to 70°C) | Lacks industrial temperature rating and open-collector flexibility for wired-OR logic | Choose TLV1391IDBVR for industrial-grade open-collector outputs and faster response in 3-V systems |
Compared with LM393DR and TLV7211CDBVR, the TLV1391IDBVR uniquely balances sub-µs speed, 80 µA quiescent current, −40°C to 85°C qualification, and open-collector output in SOT-23-5 - making it optimal for space-constrained, battery-sensitive industrial monitors where timing and reliability are co-critical.
Availability
TLV1391IDBVR is available at Aetrix Electronics and suitable for battery management systems, industrial sensor interfaces, power supply supervision, and portable equipment requiring stable component supply across extended temperature ranges.
Supply support for TLV1391IDBVR 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 with emphasis on reliability, scalability, and broad ecosystem support.
The TLV1391IDBVR belongs to TI's precision low-voltage comparator product line, designed specifically to replace legacy bipolar comparators in modern 3-V and 5-V systems while reducing power, improving speed, and simplifying single-supply design.
FAQ
What is the maximum supply voltage for TLV1391IDBVR?
The absolute maximum supply voltage for TLV1391IDBVR is 7 V, as specified in the Absolute Maximum Ratings table. Operation beyond this voltage risks permanent device damage. For reliable long-term function, 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.
Does TLV1391IDBVR have rail-to-rail input capability?
Yes, TLV1391IDBVR supports a common-mode input voltage range from ground (0 V) to VCC−2 V, explicitly including ground in single-supply configurations. This rail-to-ground input capability eliminates the need for input biasing networks when interfacing with sensors, resistive dividers, or current-sense amplifiers referenced to system ground.
Is TLV1391IDBVR pin-compatible with LM393?
No, TLV1391IDBVR is not pin-compatible with LM393. While both are single comparators, TLV1391IDBVR uses a 5-pin SOT-23-5 (DBV) package with dedicated GND and VCC pins, whereas LM393 uses an 8-pin SOIC or 8-pin PDIP package with dual comparators and shared supply pins. Direct replacement requires PCB layout revision.
What is the output configuration of TLV1391IDBVR?
TLV1391IDBVR features an open-collector output (Pin 5), requiring an external pull-up resistor to define the logic-high voltage level and current-sinking capability. It can sink up to 600 µA at 5 V while maintaining VOL ≤ 300 mV across temperature - ideal for driving TTL/CMOS inputs, optocouplers, or discrete transistors.
What temperature range is TLV1391IDBVR qualified for?
TLV1391IDBVR is qualified for operation from −40°C to +85°C, designated by the "I" grade in the part number. This industrial temperature range is verified per TI's production testing standards and supports deployment in demanding environments such as factory automation, outdoor instrumentation, and automotive cabin modules.
TLV1391IDBVR 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:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SOT-23-5
TLV1391IDBVR FAQ
1.How can I place an order for TLV1391IDBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV1391IDBVR 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 TLV1391IDBVR reliable?
The price and inventory of TLV1391IDBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV1391IDBVR is usually 5 days.
3.What payment methods are accepted for TLV1391IDBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV1391IDBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV1391IDBVR?
TLV1391IDBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV1391IDBVR 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 TLV1391IDBVR?
For technical support, including TLV1391IDBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV1391IDBVR requirements.
6.How does Aetrix verify that TLV1391IDBVR is sourced from the original manufacturer or authorized distributors?
All TLV1391IDBVR 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 TLV1391IDBVR meets industry standards.
7.What is the process for return or replacement of TLV1391IDBVR?
All TLV1391IDBVR units undergo pre-shipment inspection (PSI). If there is an issue with TLV1391IDBVR, 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 TLV1391IDBVR part is unused and in its original packaging.
Return procedure for TLV1391IDBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLV1391IDBVR 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…
