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Texas Instruments TLV1811LDCKR
- Part No.:
- TLV1811LDCKR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
TLV1811LDCKR.pdf
- Description:
- SINGLE-CHANNEL MICROPOWER HIGH-V
- Quantity:
- Payment:
- Shipping:
Inventory:1,573
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Product details
Overview
TLV1811LDCKR from Texas Instruments is a single-channel, 40V rail-to-rail input comparator with push-pull output, 5 μA quiescent current per channel, 420 ns propagation delay (at 100 mV overdrive), and Power-On Reset (POR) for deterministic startup in industrial motor drives and factory automation systems.
For engineers reviewing the TLV1811LDCKR datasheet, TLV1811LDCKR pinout, TLV1811LDCKR application, or TLV1811LDCKR equivalent, this page delivers verified electrical parameters, SC-70-6 package mapping, functional distinctions between TLV181x (push-pull) and TLV182x (open-drain), and real-world design implications of its 2.4V–40V supply range and –40°C to +125°C operation.
Technical Context
The TLV1811LDCKR implements a rail-to-rail input stage with ±200 mV common-mode extension beyond V− and V+, enabling direct sensing across wide voltage rails without level-shifting. Its internal POR circuit holds the push-pull output low until V+ reaches ≥2.4 V and remains active for ≤200 μs during power-up/down transitions.
As a member of the TLV181x series, it features a fully differential input bias network with 150 fA typical input bias current and 500 μV max input offset voltage (±4 mV over temperature), optimized for low-power, high-precision threshold detection in battery-backed and 24V industrial control nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.4 V to 40 V - supports direct interface with 3.3V, 5V, 12V, 24V, and 36V industrial buses without regulation. |
| Propagation Delay | 420 ns (typ, 100 mV overdrive, CL = 50 pF) - enables fast response in overvoltage/undervoltage lockout and motor phase timing circuits. |
| Quiescent Current | 5 μA per channel (typ, TA = 25°C) - allows always-on monitoring in energy-constrained edge sensors and battery-powered HMI modules. |
| Input Offset Voltage | ±0.5 mV (typ, 25°C); ±4 mV (max, –40°C to +125°C) - ensures stable trip-point accuracy across automotive and industrial thermal environments. |
| Input Bias Current | 150 fA (typ, 25°C) - permits high-impedance sensor interfacing (e.g., thermistors, RTDs) without significant measurement error. |
| Power-On Reset Threshold | 1.7 V (min) - guarantees known output state during brown-out conditions down to 1.7 V supply, preventing false triggering in PLC I/O modules. |
Pinout & Package
TLV1811LDCKR is packaged in SC-70-6 (DCK), measuring 1.25 mm × 2.00 mm, with exposed die pad connected internally to V−. This thermally enhanced 6-pin package supports high-density PCB layouts in space-constrained motor driver gate-drive boards and compact power-supply supervisors.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN− | Inverting input | Accepts signals from V− − 0.2 V to V+ + 0.2 V; must be current-limited if driven beyond rails. |
| 2 V− | Negative supply | Reference node for all inputs/outputs; exposed thermal pad must be soldered directly to V− plane. |
| 3 IN+ | Non-inverting input | High-impedance node (150 fA bias); used for reference comparison or zero-crossing detection. |
| 4 OUT | Push-pull output | Sinks/sourses mA-level current; drives LEDs, MOSFET gates, or logic inputs without external pull-up. |
| 5 V+ | Positive supply | Supports up to 40 V; powers internal bias and POR circuitry; ESD clamped to ±200 mV beyond rails. |
| 6 N/C | No connection | Internally unconnected; must remain floating - no routing or stitching required. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input | Operates with inputs from V− − 0.2 V to V+ + 0.2 V - eliminates need for external level shifters when monitoring 0–24V analog signals. |
| Push-pull output | Drives capacitive loads (e.g., MOSFET gates) and resistive loads (e.g., LEDs) without external pull-up - reduces BOM count and board area. |
| Power-On Reset (POR) | Holds output low for ≤200 μs after V+ crosses 1.7 V - prevents spurious outputs during system boot in programmable logic controllers. |
| Wide temperature range | Specified from –40°C to +125°C - qualified for under-hood automotive sensors and industrial motor drive feedback loops. |
| ESD robustness | ±2000 V HBM - withstands handling and assembly stresses in automated manufacturing lines without special ESD protocols. |
Applications
| Overvoltage Protection Circuit | Motor Phase Detection |
|---|---|
|
Use Scenario: Monitors DC bus voltage in a 24V BLDC motor controller and triggers shutdown if >28V. IC Role / Device Role / Timing Role: Threshold comparator with fast 420 ns response and POR-stabilized output ensures reliable fault latching before MCU intervention. Use Value: Eliminates external voltage reference and pull-up resistor, reducing component count by 3 parts while maintaining <1% trip-point drift over temperature. |
Use Scenario: Detects zero-crossing of back-EMF in a 3-phase inverter to commutate motor windings. IC Role / Device Role / Timing Role: High-speed, low-offset comparator delivering precise timing edges to MCU timer capture inputs. Use Value: 500 μV offset and rail-to-rail input enable accurate zero-crossing at low speeds (<100 RPM), improving low-end torque control. |
| Industrial Sensor Interface | Programmable Logic Controller (PLC) Input Module |
|
Use Scenario: Interfaces with a 100kΩ NTC thermistor in a factory oven temperature monitor. IC Role / Device Role / Timing Role: Low-bias-current (150 fA) comparator compares thermistor divider output against precision reference. Use Value: Negligible current injection into high-impedance sensor network preserves measurement accuracy; 5 μA supply enables battery backup for 5+ years. |
Use Scenario: Provides isolated digital input conditioning for 24V dry-contact field devices in a DIN-rail PLC. IC Role / Device Role / Timing Role: Robust 40V-input comparator with POR ensures clean logic-level output during power cycling and brownouts. Use Value: 2.4V–40V supply range accepts direct connection to 24V field wiring; 125°C rating supports operation inside hot control cabinets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV1811DBVR | SOT-23-5 package (5-pin), standard pinout (V+ on Pin 5, V− on Pin 2); no N/C pin; identical electrical specs. | Lacks N/C pin; requires PCB redesign if footprint compatibility with DCK is needed; better thermal resistance (RθJA = 203.4°C/W vs. 185.6°C/W). | Select for cost-sensitive, high-volume designs where SOT-23-5 is already standardized and thermal margin exceeds requirements. |
| TLV1821LDCKR | Same SC-70-6 package and pinout, but open-drain output - cannot source current; supports 40V pull-up independent of V+. | Required where wired-OR logic, level translation, or >V+ output swing is needed; unsuitable for direct LED/MOSFET drive without external pull-up. | Select when interfacing with mixed-voltage systems (e.g., 3.3V logic controlling 24V loads) or when multiple comparators must share one output line. |
Compared with TLV1811DBVR, TLV1811LDCKR offers superior thermal performance in ultra-compact layouts and an unused N/C pin for future test access; compared with TLV1821LDCKR, it provides true bidirectional drive capability essential for driving capacitive gates and indicator LEDs without added components.
Availability
TLV1811LDCKR is available at Aetrix Electronics and suitable for industrial motor drives, factory automation I/O modules, and appliance power-supply supervision requiring stable component supply across extended temperature and voltage ranges.
Supply support for TLV1811LDCKR 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 and power management ICs.
The TLV181x family was designed specifically for high-reliability, low-power threshold detection in harsh industrial and automotive environments - emphasizing rail-to-rail input, wide supply range, and deterministic POR behavior.
FAQ
What is the function of the N/C pin on TLV1811LDCKR?
The N/C (No Connection) pin on TLV1811LDCKR is internally unconnected and must remain floating - no routing, grounding, or connection to any net is permitted. It exists to maintain mechanical symmetry in the SC-70-6 package and does not affect electrical operation. Leaving it unconnected ensures full compliance with TI's recommended layout practices for thermal and ESD integrity.
Does TLV1811LDCKR support operation at 2.4V supply?
Yes, TLV1811LDCKR is fully specified down to 2.4V supply voltage, with guaranteed 420 ns propagation delay, 5 μA quiescent current, and functional Power-On Reset. At 2.4V, the output swing remains within 250 mV of the rails (VOL ≤ 250 mV, VOH ≥ V+ − 250 mV), making it suitable for ultra-low-voltage battery monitoring and energy-harvesting systems.
How does the Power-On Reset (POR) behave on TLV1811LDCKR?
TLV1811LDCKR's POR circuit activates whenever V+ crosses 1.7 V (min), holding the push-pull output low for ≤200 μs. This ensures a known logic state during power ramp-up and brown-out events. Once V+ stabilizes above 2.4 V and the POR timeout expires, the output begins responding to input differentials - critical for preventing false trips in safety-critical power sequencing.
Can TLV1811LDCKR drive a MOSFET gate directly?
Yes, TLV1811LDCKR's push-pull output can sink and source up to 30 mA (short-circuit current), enabling direct drive of small-signal MOSFET gates (e.g., SiC or low-Qg logic-level FETs). For larger gate capacitances (>1 nF), a series gate resistor is recommended to limit peak current and prevent ringing - consistent with TI's application guidance in SLVA924.
What is the maximum input voltage allowed beyond the supply rails for TLV1811LDCKR?
TLV1811LDCKR's rail-to-rail inputs tolerate voltages from V− − 0.2 V to V+ + 0.2 V. Exceeding this range risks forward-biasing internal ESD clamps. If overvoltage transients are expected, TI recommends adding a series current-limiting resistor (≤10 mA max clamp current) or external Schottky clamping diodes to V+ and V−.
TLV1811LDCKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 1
- 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):
- 7.5µA, 10µA
- Current - Quiescent (Max):
- 100dB PSRR
- CMRR, PSRR (Typ):
- 900ns (Typ)
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SC-70-6
TLV1811LDCKR FAQ
1.How can I place an order for TLV1811LDCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV1811LDCKR 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 TLV1811LDCKR reliable?
The price and inventory of TLV1811LDCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV1811LDCKR is usually 5 days.
3.What payment methods are accepted for TLV1811LDCKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV1811LDCKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV1811LDCKR?
TLV1811LDCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV1811LDCKR 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 TLV1811LDCKR?
For technical support, including TLV1811LDCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV1811LDCKR requirements.
6.How does Aetrix verify that TLV1811LDCKR is sourced from the original manufacturer or authorized distributors?
All TLV1811LDCKR 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 TLV1811LDCKR meets industry standards.
7.What is the process for return or replacement of TLV1811LDCKR?
All TLV1811LDCKR units undergo pre-shipment inspection (PSI). If there is an issue with TLV1811LDCKR, 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 TLV1811LDCKR part is unused and in its original packaging.
Return procedure for TLV1811LDCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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