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Texas Instruments TLV1814RTER
- Part No.:
- TLV1814RTER
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
TLV1814RTER.pdf
- Description:
- QUAD, MICROPOWER HIGH-VOLTAGE PU
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
TLV1814RTER from Texas Instruments is a quad-channel, rail-to-rail input comparator with push-pull output, operating from 2.4V to 40V supply and consuming only 5μA per channel. It features 420ns typical propagation delay, 500μV max input offset voltage, and Power-On Reset (POR) for deterministic startup in industrial motor drives and factory automation systems.
For engineers reviewing the TLV1814RTER datasheet, TLV1814RTER pinout, TLV1814RTER application, or TLV1814RTER equivalent, this page delivers verified electrical specs, package-validated pin functions, real-world use cases in high-voltage sensing, and two confirmed alternative parts with documented functional and interface differences.
Technical Context
The TLV1814RTER implements four independent comparators with rail-to-rail input stages extending from (V−) − 0.2V to (V+) + 0.2V and push-pull outputs capable of sourcing/sinking ≥4mA. Its internal POR circuit holds outputs low for ≤200μs during power ramp-up until V+ reaches ≥2.4V, preventing false triggering.
Each channel operates across −40°C to +125°C with 150fA typical input bias current and 2kV HBM ESD rating. The device supports full 40V differential supply operation while maintaining 5μA quiescent current per channel - enabling direct integration into 24V/36V industrial control rails without external regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.4V to 40V - enables direct connection to unregulated industrial bus rails (e.g., 24V PLC I/O, 36V motor control) |
| Quiescent Current / Channel | 5μA at 25°C - allows battery-backed or energy-harvested sensor nodes to operate for years on microamp budgets |
| Propagation Delay | 420ns at 100mV overdrive, CL = 50pF - supports fast response in overvoltage protection and PWM feedback loops |
| Input Offset Voltage | ±0.5mV typical - ensures accurate threshold detection in precision voltage monitoring (e.g., battery cell balancing) |
| Rail-to-Rail Input Range | (V−) − 0.2V to (V+) + 0.2V - permits direct sensing of signals near supply rails without level-shifting circuitry |
| Power-On Reset Duration | ≤200μs - guarantees known low-state output during system boot, eliminating spurious relay actuation or gate drive |
| ESD Rating (HBM) | ±2000V - meets IEC 61000-4-2 Level 3 requirements for industrial equipment front-end signal conditioning |
Pinout & Package
TLV1814RTER is housed in a 16-pin WQFN package (3.0mm × 3.0mm, 0.5mm pitch) with exposed thermal pad connected directly to V− for enhanced thermal performance in high-density PCB layouts.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| OUT1 (Pin 16) | Comparator 1 output | Push-pull stage sinks/sources ≥4mA - drives MOSFET gates or LEDs directly without pull-up resistors |
| OUT2 (Pin 15) | Comparator 2 output | Independent push-pull output - enables dual-threshold detection (e.g., window comparator with shared inputs) |
| V+ (Pin 1) | Positive supply | Accepts up to 40V - powers all four comparators and internal POR logic from single high-voltage rail |
| IN1− (Pin 2), IN1+ (Pin 4) | Comparator 1 inputs | Rail-to-rail differential pair - accepts signals from ground to V+ + 0.2V, enabling direct battery or bus voltage sensing |
| IN2− (Pin 5), IN2+ (Pin 6) | Comparator 2 inputs | Electrically identical to IN1± - supports redundant or cascaded comparison topologies |
| IN3− (Pin 7), IN3+ (Pin 8) | Comparator 3 inputs | Full rail-to-rail range - used for auxiliary monitoring (e.g., temperature sensor reference tracking) |
| IN4− (Pin 9), IN4+ (Pin 11) | Comparator 4 inputs | Validated input structure - enables fourth independent threshold check (e.g., fault lockout with hysteresis) |
| V− (Pin 12) | Negative supply | Reference node for all inputs/outputs - thermal pad must be soldered to PCB ground plane for thermal stability |
| OUT3 (Pin 14), OUT4 (Pin 13) | Comparator 3 & 4 outputs | Matched push-pull performance - supports parallel outputs or independent control signals in multi-zone systems |
| NC (Pins 3, 10) | No internal connection | Must remain unconnected - floating or grounded per layout best practice; no internal circuitry attached |
Key Features
| Feature | Design Value |
|---|---|
| Push-pull output architecture | Eliminates external pull-up resistors and reduces BOM count in 4-channel voltage monitoring designs |
| 40V absolute maximum supply rating | Supports direct interface with 36V industrial buses and automotive 24V systems without pre-regulation |
| Power-On Reset (POR) with low-state hold | Prevents undefined logic states during brown-out conditions - critical for fail-safe motor enable circuits |
| 150fA input bias current | Enables high-impedance sensor interfacing (e.g., thermistor networks, pH electrodes) without loading errors |
| −40°C to +125°C operating range | Qualified for under-hood automotive and factory-floor embedded control applications without derating |
Applications
| Overvoltage Protection Circuit | Motor Phase Current Monitoring |
|---|---|
|
Use Scenario: Detecting DC bus overvoltage in servo drives before IGBT gate turn-off. IC Role / Device Role / Timing Role: Quad comparator compares bus voltage against four independent thresholds to trigger staged shutdown. Use Value: 420ns propagation delay enables sub-microsecond response to transients; 40V supply tolerance allows direct connection to 36V bus. |
Use Scenario: Real-time current sensing across three motor phases plus neutral reference in BLDC inverters. IC Role / Device Role / Timing Role: Four channels monitor shunt voltage drops with rail-to-rail input capability at low-side sensing nodes. Use Value: 5μA/channel quiescent current minimizes self-heating in enclosed motor controllers; 150fA bias current preserves accuracy with high-value sense resistors. |
| Industrial Temperature Sensor Interface | Programmable Logic Controller (PLC) Input Module |
|
Use Scenario: Converting RTD or thermistor analog outputs into digital status flags for HVAC control units. IC Role / Device Role / Timing Role: Comparator channels implement fixed-temperature windows (e.g., freeze, overheat, alarm, trip). Use Value: ±0.5mV offset voltage ensures <±1°C error in 10kΩ NTC interfaces; POR prevents false alarms during cold start. |
Use Scenario: Isolating and conditioning 24V digital inputs in modular PLC backplanes with LED status indication. IC Role / Device Role / Timing Role: Push-pull outputs drive indicator LEDs and optocoupler inputs simultaneously without external drivers. Use Value: 4mA output drive strength supports standard 24V LED loads; 2kV HBM ESD rating withstands field wiring transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV1824RTER | Open-drain output instead of push-pull; same pinout and supply specs | Requires external pull-up for logic-high; enables wired-OR and level translation up to 40V | Select when interfacing with mixed-voltage systems or needing fault-bus arbitration |
| LM339DR | 2.0V–36V supply; 1.5mA/channel quiescent current; no POR; open-collector output | Lacks rail-to-rail input and Power-On Reset; higher power draw limits battery use | Choose for legacy designs where cost is primary and 5μA operation is unnecessary |
Compared with TLV1814RTER, TLV1824RTER offers identical packaging and voltage range but requires external pull-ups for high-level assertion, while LM339DR trades micro-power operation and POR for broader legacy compatibility and lower unit cost - making TLV1814RTER optimal for new energy-conscious industrial designs requiring deterministic startup behavior.
Availability
TLV1814RTER is available at Aetrix Electronics and suitable for industrial motor drives, factory automation systems, and programmable logic controller input modules requiring stable component supply across extended temperature ranges and high-voltage operation.
Supply support for TLV1814RTER 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 precision signal chain components.
The TLV1814RTER belongs to TI's TLV181x family of micro-power comparators designed specifically for high-voltage industrial sensing, automotive subsystems, and energy-efficient control applications where rail-to-rail input, low quiescent current, and guaranteed power-up behavior are mandatory.
FAQ
What is the maximum supply voltage the TLV1814RTER can tolerate?
The TLV1814RTER has an absolute maximum supply voltage of 42V between V+ and V−, with recommended operation up to 40V. This allows direct connection to 36V industrial bus rails and 24V automotive systems without external regulators, while maintaining full rail-to-rail input functionality and 5μA per channel quiescent current. Exceeding 42V risks permanent damage per the Absolute Maximum Ratings table.
Does the TLV1814RTER include Power-On Reset, and how does it behave?
Yes, the TLV1814RTER integrates a Power-On Reset (POR) circuit that holds all four outputs low for ≤200μs after V+ crosses 2.4V during power-up or drops below 2.4V during power-down. This ensures deterministic startup in safety-critical applications like motor enable circuits, preventing false triggering of downstream logic or gate drivers before stable supply conditions are established.
Can the TLV1814RTER drive a MOSFET gate directly?
Yes, the TLV1814RTER's push-pull outputs can source and sink ≥4mA, enabling direct drive of small-signal MOSFET gates (e.g., SiC or GaN logic-level devices) without external buffers. Its 420ns propagation delay and rail-to-rail input range allow fast, accurate switching in protection circuits - though a series gate resistor is recommended to limit peak current and suppress ringing in high-speed switching applications.
What is the input offset voltage specification for TLV1814RTER over temperature?
The TLV1814RTER specifies ±4mV maximum input offset voltage across the full −40°C to +125°C operating range, with ±0.5mV typical at 25°C. Its ±1.2μV/°C drift ensures stable threshold accuracy in environments with wide thermal swings, such as under-hood automotive modules or factory-floor motor controllers where calibration-free operation is required.
How does the TLV1814RTER handle unused comparator channels?
Unused comparator channels in the TLV1814RTER must not have inputs tied together - doing so causes high-frequency chatter due to internal noise amplification. Instead, each unused input pair should be biased with ≥50mV differential voltage within the rail-to-rail range (e.g., INx− grounded, INx+ tied to V+ or a stable reference). Outputs may be left floating; no termination is required for push-pull stages.
TLV1814RTER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 16-WFQFN Exposed Pad
- 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 @ 12V
- Current - Input Bias (Max):
- 30mA @ 12V
- Current - Output (Typ):
- 6.5µA, 9µA
- Current - Quiescent (Max):
- 100dB PSRR
- CMRR, PSRR (Typ):
- 900ns (Typ)
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 16-WQFN (3x3)
TLV1814RTER FAQ
1.How can I place an order for TLV1814RTER through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV1814RTER 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 TLV1814RTER reliable?
The price and inventory of TLV1814RTER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV1814RTER is usually 5 days.
3.What payment methods are accepted for TLV1814RTER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV1814RTER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV1814RTER?
TLV1814RTER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV1814RTER 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 TLV1814RTER?
For technical support, including TLV1814RTER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV1814RTER requirements.
6.How does Aetrix verify that TLV1814RTER is sourced from the original manufacturer or authorized distributors?
All TLV1814RTER 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 TLV1814RTER meets industry standards.
7.What is the process for return or replacement of TLV1814RTER?
All TLV1814RTER units undergo pre-shipment inspection (PSI). If there is an issue with TLV1814RTER, 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 TLV1814RTER part is unused and in its original packaging.
Return procedure for TLV1814RTER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLV1814RTER 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
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