My Inquiry
My Account
Texas Instruments TLV3491AIDBVT
- Part No.:
- TLV3491AIDBVT
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TLV3491AIDBVT.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,217
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLV3491AIDBVT from Texas Instruments is a single-channel, nanopower, rail-to-rail input/output comparator with push-pull CMOS output stage, designed for ultra-low-power systems operating from 1.8 V to 5.5 V supply. It delivers 6 µs propagation delay (at 100 mV overdrive), 0.8 µA typical quiescent current, and input common-mode range extending 200 mV beyond both rails - enabling reliable operation in single-cell battery-powered applications such as portable medical sensors and wireless security nodes.
For engineers reviewing the TLV3491AIDBVT datasheet, TLV3491AIDBVT pinout, TLV3491AIDBVT application, or TLV3491AIDBVT equivalent, key selection criteria include its nanopower consumption, rail-to-rail input capability, push-pull output eliminating external pull-up needs, and SOT-23-5 package suitability for space-constrained PCB layouts.
Technical Context
The TLV3491AIDBVT implements a fully differential input stage with ESD-protected inputs rated for ±3000 V HBM, operating across –40°C to +125°C. Its push-pull output drives high-impedance loads directly without external resistors and avoids shoot-through current during switching.
Input offset voltage is ±3 mV (typ), with ±15 mV (max) over temperature, and PSRR reaches 1000 µV/V - critical for stable threshold detection in noisy, low-voltage environments where supply ripple may otherwise induce false triggering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.8 V to 5.5 V - supports direct operation from single Li-ion or two alkaline cells |
| Quiescent Current | 0.8 µA (typ) - enables multi-year battery life in always-on sensor wake-up circuits |
| Propagation Delay | 6 µs (typ, 100 mV overdrive) - balances speed and power for event-triggered monitoring |
| Input Common-Mode Range | V– – 0.2 V to V+ + 0.2 V - allows sensing signals below ground or above supply in single-supply systems |
| Output Type | Push-pull CMOS - eliminates need for external pull-up resistor, reducing BOM count and board area |
| Input Offset Voltage | ±3 mV (typ), ±15 mV (max) - defines minimum detectable signal differential without hysteresis |
| ESD Rating | ±3000 V HBM - ensures robustness during handling and in-field deployment |
Pinout & Package
TLV3491AIDBVT is housed in a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm, optimized for high-density portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Output | CMOS push-pull output capable of sourcing/sinking ≥5 mA; no external pull-up required |
| 2 - V– | Negative Supply | Lowest potential supply rail; connects to GND in single-supply configurations |
| 3 - +IN | Noninverting Input | Differential input node; accepts signals up to V+ + 0.2 V and down to V– – 0.2 V |
| 4 - –IN | Inverting Input | Differential input node; same rail-to-rail common-mode range as +IN |
| 5 - V+ | Positive Supply | Highest potential supply rail; operates from 1.8 V to 5.5 V |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input | Enables direct interface with sensors whose output swings near or beyond supply rails (e.g., thermopiles, bridge amplifiers) |
| Push-pull output | Drives logic inputs directly and reduces system-level power by eliminating external pull-up resistors |
| 0.8 µA quiescent current | Supports >10-year battery life in coin-cell–powered IoT endpoints with periodic wake-up intervals |
| 6 µs propagation delay | Provides sufficient speed for motion-triggered alerts, zero-crossing detection, and power-on reset timing |
| –40°C to +125°C operation | Validated for use in automotive cabin modules, industrial sensor nodes, and outdoor security hardware |
Applications
| Portable Medical Sensors | Wireless Security Nodes |
|---|---|
Use Scenario: Battery-powered pulse oximeter detecting blood oxygen saturation via photodiode signal comparison. IC Role / Device Role / Timing Role: Comparator thresholds analog photodiode outputs against reference to trigger ADC sampling only on valid pulse events. Use Value: Nanopower operation extends battery life to >2 years; rail-to-rail input accommodates low-amplitude AC-coupled sensor signals without level-shifting. | Use Scenario: Door/window contact sensor in Zigbee-enabled home security hub detecting magnetic switch closure. IC Role / Device Role / Timing Role: Compares reed switch voltage against internal reference to generate clean digital interrupt to MCU on state change. Use Value: Push-pull output interfaces directly with MCU GPIO; 0.8 µA IQ minimizes standby drain in always-listening mode. |
| Handheld Test Instruments | Ultra-Low-Power Industrial Monitoring |
Use Scenario: Pocket-sized multimeter detecting continuity or overvoltage thresholds during field diagnostics. IC Role / Device Role / Timing Role: Provides fast, low-drift threshold detection for audible beep generation or LED alert activation. Use Value: 6 µs response time ensures immediate feedback; SOT-23-5 footprint saves space in compact handheld enclosures. | Use Scenario: Remote temperature logger using thermistor network and microcontroller wake-up on thermal excursion. IC Role / Device Role / Timing Role: Monitors thermistor divider output vs reference to assert wake-up signal when threshold exceeded. Use Value: Input common-mode range beyond rails allows direct connection to high-side thermistor dividers without biasing resistors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nanopower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3701DBVR | Higher supply current (560 nA vs 800 nA), open-drain output requiring external pull-up | Suitable where bidirectional bus interfacing or wired-OR logic is needed | Choose TLV3701DBVR only if open-drain functionality is explicitly required; TLV3491AIDBVT preferred for lower system power and simpler layout |
| LMV7215M5X | Higher quiescent current (1.1 µA typ), 7 µs propagation delay, no rail-to-rail input | Better suited for higher-speed, non-battery-critical applications with wider supply margins | Select LMV7215M5X only when faster response is prioritized over power; TLV3491AIDBVT maintains superior rail-to-rail input and lower IQ |
Compared with TLV3701DBVR and LMV7215M5X, TLV3491AIDBVT uniquely combines sub-1-µA IQ, rail-to-rail input, and push-pull output - making it the optimal choice for space- and energy-constrained single-supply systems where simplicity and longevity are design priorities.
Availability
TLV3491AIDBVT is available at Aetrix Electronics and suitable for portable medical equipment, wireless security systems, handheld instruments, ultra-low-power systems, and battery-operated IoT edge nodes requiring stable component supply across long production lifecycles.
Supply support for TLV3491AIDBVT 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 company specializing in analog and embedded processing technologies, with leadership in precision analog, low-power design, and industrial-grade reliability.
The TLV349x product line was engineered specifically for nanopower, rail-to-rail comparators in battery-constrained applications - targeting portable instrumentation, wearable health monitors, and energy-harvesting sensor nodes.
FAQ
What is the maximum supply voltage rating for TLV3491AIDBVT?
The absolute maximum supply voltage for TLV3491AIDBVT is 5.5 V. Exceeding this value risks permanent damage. The device is specified for reliable operation from 1.8 V to 5.5 V across –40°C to +125°C, with recommended conditions limiting supply to ≤5.5 V to ensure long-term reliability and parametric compliance per SBOS262E.
Does TLV3491AIDBVT support rail-to-rail input operation?
Yes, TLV3491AIDBVT supports true rail-to-rail input operation with a common-mode voltage range from (V–) – 0.2 V to (V+) + 0.2 V. This allows direct interfacing with sensors or signal sources that swing below ground or above the positive supply - a key advantage over conventional comparators in single-supply, low-voltage systems.
What output configuration does TLV3491AIDBVT use?
TLV3491AIDBVT features a push-pull CMOS output stage, capable of actively sourcing and sinking current without requiring an external pull-up resistor. This reduces system-level power consumption, simplifies PCB layout, and improves noise immunity compared to open-drain alternatives like TLV3701DBVR.
Can TLV3491AIDBVT operate from a single 1.8-V cell?
Yes, TLV3491AIDBVT is fully specified to operate from 1.8 V, making it compatible with single LiFePO₄ or two-series alkaline cells. Its 0.8 µA typical quiescent current and rail-to-rail input/output ensure functional integrity even as battery voltage declines toward end-of-life.
Is external hysteresis required for stable operation of TLV3491AIDBVT?
External hysteresis is recommended for noisy input signals, as the TLV3491AIDBVT has a typical input offset voltage of ±3 mV (±15 mV max). Without hysteresis, input noise within this band can cause multiple output transitions. A feedback resistor from OUT to +IN adds controlled hysteresis, improving noise immunity in real-world sensor interfaces.
TLV3491AIDBVT 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:
- CMOS, Push-Pull, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 1.8V ~ 5.5V
- :
- 15mV @ 5.5V
- Voltage - Input Offset (Max):
- 10pA @ 5.5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 1.2µA
- Current - Quiescent (Max):
- 74dB CMRR, 69.12dB PSRR
- CMRR, PSRR (Typ):
- 13.5µs
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SOT-23-5
TLV3491AIDBVT FAQ
1.How can I place an order for TLV3491AIDBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV3491AIDBVT 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 TLV3491AIDBVT reliable?
The price and inventory of TLV3491AIDBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV3491AIDBVT is usually 5 days.
3.What payment methods are accepted for TLV3491AIDBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV3491AIDBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV3491AIDBVT?
TLV3491AIDBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV3491AIDBVT 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 TLV3491AIDBVT?
For technical support, including TLV3491AIDBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV3491AIDBVT requirements.
6.How does Aetrix verify that TLV3491AIDBVT is sourced from the original manufacturer or authorized distributors?
All TLV3491AIDBVT 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 TLV3491AIDBVT meets industry standards.
7.What is the process for return or replacement of TLV3491AIDBVT?
All TLV3491AIDBVT units undergo pre-shipment inspection (PSI). If there is an issue with TLV3491AIDBVT, 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 TLV3491AIDBVT part is unused and in its original packaging.
Return procedure for TLV3491AIDBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLV3491AIDBVT 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…
