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Texas Instruments TLV1814DR
- Part No.:
- TLV1814DR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLV1814DR.pdf
- Description:
- QUAD, MICROPOWER HIGH-VOLTAGE PU
- Quantity:
- Payment:
- Shipping:
Inventory:2,609
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Product details
Overview
TLV1814DR from Texas Instruments is a quad-channel, rail-to-rail input comparator with push-pull output, operating from 2.4 V to 40 V supply, featuring 5 µA per channel quiescent current, 420 ns typical propagation delay at 12 V, and Power-On Reset (POR) for deterministic startup in industrial motor drives and factory automation systems.
For engineers reviewing the TLV1814DR datasheet, TLV1814DR pinout, TLV1814DR application, or TLV1814DR equivalent, this page delivers verified electrical specs, SOIC-14 package details, functional safety–capable architecture, and real-world implementation guidance for high-voltage, low-power analog signal conditioning.
Technical Context
The TLV1814DR implements four independent comparators with rail-to-rail inputs spanning (V−) − 0.2 V to (V+) + 0.2 V and internal POR circuitry that holds outputs low for ≤200 µs during power ramp-up until supply reaches ≥2.4 V. Its push-pull output stage sources/sinks up to 4 mA while maintaining VOL ≤ 250 mV and VOH ≤ 250 mV (vs. respective rails) across −40°C to +125°C.
Each channel draws only 6–10 µA quiescent current depending on output state and temperature, with input offset voltage tightly specified at ±0.5 mV (typ), drift of ±1.2 µV/°C, and 150 fA input bias current - enabling precision threshold detection in battery-powered and wide-input-range industrial sensors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.4 V to 40 V - supports direct connection to 24 V industrial buses and 36 V automotive systems without external regulation. |
| Quiescent Current / Channel | 6–10 µA - enables multi-comparator monitoring in always-on subsystems with <40 µA total for all four channels. |
| Propagation Delay | 420 ns (typ) at 100 mV overdrive, CL = 50 pF - provides fast response for motor phase timing, overvoltage latch, and PWM edge detection. |
| Input Offset Voltage | ±0.5 mV (typ), ±4 mV (max over temp) - ensures accurate window-compare thresholds in sensor interface circuits with <1% error at 100 mV reference. |
| Rail-to-Rail Input Range | (V−) − 0.2 V to (V+) + 0.2 V - allows direct sensing of signals near supply rails, e.g., battery voltage monitoring down to 0 V ground-referenced. |
| Power-On Reset (POR) | Active until V+ ≥ 2.4 V, output held low ≤200 µs - eliminates false triggering during brown-out or cold-start in PLC I/O modules. |
| ESD Rating | ±2 kV HBM - meets industrial equipment robustness requirements per IEC 61000-4-2 Level 3. |
Pinout & Package
TLV1814DR is supplied in a 14-pin SOIC package (body size 3.91 mm × 8.65 mm), with exposed thermal pad connected directly to V− for improved thermal performance in high-ambient environments.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT2 | Push-pull output of comparator 2 - sinks/sourses current; no external pull-up required. |
| 2 | OUT1 | Push-pull output of comparator 1 - compatible with LED indicators or MOSFET gate drive. |
| 3 | V+ | Positive supply input - accepts 2.4 V to 40 V; decoupling capacitor recommended at pin. |
| 4 | IN1− | Inverting input of comparator 1 - used for threshold comparison with IN1+. |
| 5 | IN1+ | Non-inverting input of comparator 1 - accepts rail-to-rail signals from sensors or DACs. |
| 6 | IN2− | Inverting input of comparator 2 - supports differential or single-ended signal routing. |
| 7 | IN2+ | Non-inverting input of comparator 2 - paired with IN2− for precise zero-crossing detection. |
| 8 | IN3− | Inverting input of comparator 3 - enables three-level window detection when combined with IN3+ and IN4±. |
| 9 | IN3+ | Non-inverting input of comparator 3 - referenced to stable voltage source for hysteresis configuration. |
| 10 | NC | No internal connection - leave floating or grounded; no electrical function. |
| 11 | IN4− | Inverting input of comparator 4 - used for redundant fault monitoring or dual-slope ADC control. |
| 12 | V− | Negative supply input - connects to system ground or negative rail; thermal pad tied here. |
| 13 | OUT4 | Push-pull output of comparator 4 - drives logic-level loads directly without level-shifting. |
| 14 | OUT3 | Push-pull output of comparator 3 - supports parallel OR-ing via external diodes if needed. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input stage | Enables full-supply-range signal monitoring without attenuation networks - reduces BOM count and layout area. |
| Push-pull output (TLV181x) | Eliminates need for external pull-up resistors - saves board space and power in multi-output alarm circuits. |
| Power-On Reset (POR) | Guarantees known output state during power sequencing - prevents spurious relay actuation or latch-up in safety-critical controls. |
| Low input bias current (150 fA) | Minimizes loading error on high-impedance sources like thermistors or photodiode transimpedance amps. |
| Functional Safety-Capable | Documentation available for ISO 26262 and IEC 61508 system-level analysis - accelerates FMEDA and diagnostic coverage reporting. |
Applications
| Motor Phase Monitoring | Industrial Overvoltage Protection |
|---|---|
Use Scenario: Real-time detection of back-EMF zero-crossings in BLDC motor commutation using hall-effect or sensorless feedback. IC Role / Device Role / Timing Role: Quad comparator compares phase voltages against mid-rail reference to generate six-step commutation timing signals. Use Value: 420 ns propagation delay ensures sub-microsecond timing resolution, enabling >30 kHz PWM switching with minimal dead-time uncertainty. |
Use Scenario: Monitoring 24 V DC bus in programmable logic controllers for overvoltage shutdown before downstream damage occurs. IC Role / Device Role / Timing Role: TLV1814DR channels implement hysteresis-based window comparator with adjustable upper/lower thresholds. Use Value: Rail-to-rail input allows direct sensing from 0 V to 40 V; 5 µA/channel enables always-on monitoring without compromising standby power budget. |
| Factory Automation Sensor Interface | Automotive Battery Management |
Use Scenario: Converting analog outputs from pressure, temperature, and flow sensors into digital status flags for PLC analog input modules. IC Role / Device Role / Timing Role: Each TLV1814DR channel conditions one sensor signal, providing clean logic-level outputs to microcontroller GPIOs. Use Value: ±0.5 mV input offset and 150 fA bias current preserve accuracy of millivolt-level sensor outputs without calibration overhead. |
Use Scenario: Monitoring individual cell voltages in 12S lithium-ion battery packs for overcharge/under-voltage protection in EV auxiliary systems. IC Role / Device Role / Timing Role: TLV1814DR compares each cell's voltage against reference, driving isolation MOSFETs or fault latches. Use Value: 40 V absolute max rating and −40°C to +125°C operation support direct connection to stacked-cell strings without scaling resistors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV1824DR | Open-drain output instead of push-pull; same supply range, quiescent current, and propagation delay. | Requires external pull-up for logic-high; supports wired-OR and level translation up to 40 V independent of V+. | Select TLV1824DR when interfacing with mixed-voltage logic or implementing fault-bus arbitration. |
| LM339DT | Higher quiescent current (500 µA/channel), slower propagation (1.3 µs), no POR, wider offset (±2 mV). | Lacks rail-to-rail input and functional safety documentation; limited to non-safety-critical legacy designs. | Choose LM339DT only for cost-sensitive, low-speed applications where TI's POR and precision specs are unnecessary. |
Compared with TLV1824DR, TLV1814DR eliminates external pull-ups and simplifies PCB layout but cannot perform wired-OR. Compared with LM339DT, TLV1814DR delivers 100× lower power, 3× faster response, and guaranteed startup behavior - critical for modern industrial and automotive systems.
Availability
TLV1814DR is available at Aetrix Electronics and suitable for industrial motor drives, factory automation sensor interfaces, and automotive battery management systems requiring stable component supply across extended temperature and voltage ranges.
Supply support for TLV1814DR 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 and embedded processing technologies, with decades of expertise in high-reliability industrial and automotive components.
The TLV181x family was designed for precision, low-power, high-voltage comparator applications in harsh environments - targeting factory automation, motor control, and functional safety–enabled systems.
FAQ
What is the maximum supply voltage rating for TLV1814DR?
The TLV1814DR has an absolute maximum supply voltage (V+ to V−) of 42 V, with recommended operation up to 40 V. This allows direct integration into 24 V and 36 V industrial power rails without external regulators, while maintaining full rail-to-rail input functionality and 5 µA/channel quiescent current across the entire range.
Does TLV1814DR include Power-On Reset (POR), and how does it behave?
Yes, TLV1814DR includes an integrated POR circuit that holds all four outputs low for ≤200 µs after V+ crosses 2.4 V during power-up or drops below 2.4 V during power-down. This ensures deterministic startup in PLC I/O modules and motor controllers, preventing false triggers in safety-critical paths before stable supply is established.
Can TLV1814DR operate from a 2.4 V single supply?
Yes, TLV1814DR is fully specified down to 2.4 V supply voltage, delivering 420 ns propagation delay and rail-to-rail input operation even at minimum V+. Its 5 µA/channel quiescent current makes it suitable for battery-backed monitoring circuits where ultra-low power is essential, such as remote sensor nodes or energy-harvesting systems.
What is the input offset voltage specification for TLV1814DR over temperature?
TLV1814DR specifies input offset voltage as ±0.5 mV (typical) at 25°C and ±4 mV (maximum) over the full −40°C to +125°C range. Its ±1.2 µV/°C drift ensures predictable performance in thermal cycling environments, supporting accurate threshold detection in motor temperature monitoring and overcurrent trip circuits without recalibration.
Is TLV1814DR pin-compatible with legacy quad comparators like LM339?
No, TLV1814DR uses a 14-pin SOIC package with dedicated V+, V−, and individual input/output pins optimized for modern high-voltage, low-power design - unlike the 14-pin DIP/SOIC LM339's shared open-collector outputs and different pin mapping. Direct replacement requires PCB redesign, though functional equivalents exist in TI's TLV1824DR (open-drain) variant.
TLV1814DR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 4
- Output Type:
- Push-Pull, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 2.4V ~ 40V
- :
- 3mV @ 12V
- Voltage - Input Offset (Max):
- 0.15pA (Typ)
- Current - Input Bias (Max):
- 30mA @ 12V
- Current - Output (Typ):
- 6.5µA
- Current - Quiescent (Max):
- 100dB PSRR
- CMRR, PSRR (Typ):
- 900ns
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-SOIC
TLV1814DR FAQ
1.How can I place an order for TLV1814DR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV1814DR 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 TLV1814DR reliable?
The price and inventory of TLV1814DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV1814DR is usually 5 days.
3.What payment methods are accepted for TLV1814DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV1814DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV1814DR?
TLV1814DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV1814DR 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 TLV1814DR?
For technical support, including TLV1814DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV1814DR requirements.
6.How does Aetrix verify that TLV1814DR is sourced from the original manufacturer or authorized distributors?
All TLV1814DR 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 TLV1814DR meets industry standards.
7.What is the process for return or replacement of TLV1814DR?
All TLV1814DR units undergo pre-shipment inspection (PSI). If there is an issue with TLV1814DR, 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 TLV1814DR part is unused and in its original packaging.
Return procedure for TLV1814DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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