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Texas Instruments TLV1812DGKR
- Part No.:
- TLV1812DGKR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TLV1812DGKR.pdf
- Description:
- DUAL MICROPOWER HIGH-VOLTAGE COM
- Quantity:
- Payment:
- Shipping:
Inventory:603
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Product details
Overview
TLV1812DGKR from Texas Instruments is a dual-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, and Power-On Reset (POR) for deterministic startup in industrial motor drives and factory automation systems.
For engineers reviewing the TLV1812DGKR datasheet, TLV1812DGKR pinout, TLV1812DGKR application, or TLV1812DGKR equivalent, this page delivers verified electrical parameters, package-specific terminal mapping, functional safety–capable operation, and real-world implementation guidance for high-voltage, low-power sensing circuits.
Technical Context
The TLV1812DGKR implements two independent comparators with rail-to-rail inputs extending from (V−) − 0.2 V to (V+) + 0.2 V and a push-pull output stage capable of sourcing/sinking ≥4 mA at ±250 mV swing. Its internal POR circuit holds outputs low for ≤200 µs during power ramp-up until supply reaches ≥2.4 V.
Designed for wide-supply applications, it maintains 500 µV max input offset voltage across −40°C to +125°C and achieves 100 dB PSRR over 2.4 V–40 V, enabling stable threshold detection in noisy 24 V/40 V industrial rails without external filtering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.4 V to 40 V - supports direct interface with 24 V PLC I/O, 36 V battery systems, and 40 V industrial rails without level-shifting. |
| Quiescent Current | 5 µA per channel - enables always-on monitoring in battery-backed sensors and energy-harvesting nodes. |
| Propagation Delay | 420 ns (typ.) at 100 mV overdrive - provides fast response for overvoltage protection and motor phase timing. |
| Input Offset Voltage | ±0.5 mV (typ.), ±4 mV (max, −40°C to +125°C) - ensures accurate threshold detection in precision analog front-ends. |
| Input Bias Current | 150 fA (typ.) - permits high-impedance sensor interfacing (e.g., thermistors, photodiodes) without loading errors. |
| Power-On Reset Threshold | 1.7 V - guarantees known low-state output until supply stabilizes above minimum operating voltage. |
| ESD Rating | ±2 kV HBM - meets industrial handling requirements per ANSI/ESDA/JEDEC JS-001. |
Pinout & Package
DGK package is an 8-pin VSSOP (3.00 mm × 3.00 mm) with exposed thermal pad connected directly to V−.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1 | Comparator 1 output | Push-pull stage sinks/sources ≥4 mA; must not be wired to another output or shorted to V+ or V−. |
| IN1− | Inverting input 1 | Rail-to-rail input (V− − 0.2 V to V+ + 0.2 V); avoid tying unused inputs together to prevent chatter. |
| IN1+ | Non-inverting input 1 | Same rail-to-rail range as IN1−; differential input voltage limited to ±40 V absolute max. |
| V− | Negative supply | Reference for all inputs and outputs; thermal pad must be soldered directly to this node for thermal reliability. |
| IN2+ | Non-inverting input 2 | Independent second comparator input; identical specs and layout rules as IN1+. |
| IN2− | Inverting input 2 | Independent second comparator input; shares same ESD structure and biasing as IN1−. |
| OUT2 | Comparator 2 output | Functionally identical to OUT1; each output operates independently with its own POR behavior. |
| V+ | Positive supply | Accepts up to 40 V; supplies internal bias and POR circuitry; must be decoupled locally with ≥100 nF ceramic capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input range | Operates with inputs from (V−) − 0.2 V to (V+) + 0.2 V - eliminates need for external level shifters in high-side sensing. |
| Push-pull output | Sinks and sources ≥4 mA - directly drives LEDs, MOSFET gates, or logic inputs without pull-up resistors. |
| Power-On Reset (POR) | Holds both outputs low ≤200 µs until V+ ≥2.4 V - prevents false triggers during brown-out or cold-start conditions. |
| Ultra-low quiescent current | 5 µA per channel at 25°C - extends battery life in portable diagnostics and remote monitoring nodes. |
| Functional safety capability | Documentation available for ISO 26262 and IEC 61508 system-level analysis - supports ASIL B/D and SIL 2/3 architectures. |
Applications
| Overvoltage Protection Circuit | Motor Phase Monitoring |
|---|---|
|
Use Scenario: Detecting DC bus voltage exceeding 36 V in a 24 V industrial drive to trigger shutdown before IGBT damage. IC Role / Device Role / Timing Role: Dual comparator compares sensed bus voltage against two independent thresholds (36 V and 38 V) using resistor dividers; OUT1 latches fault, OUT2 enables hysteresis. Use Value: 420 ns propagation delay ensures sub-microsecond response to transients; 40 V absolute max rating allows direct connection to unregulated rails. |
Use Scenario: Monitoring back-EMF zero-crossing in BLDC motor commutation for sensorless control. IC Role / Device Role / Timing Role: Each comparator channels monitor phase-to-phase differential voltage; rail-to-rail inputs capture full waveform swing without clipping. Use Value: 150 fA input bias current avoids distortion in high-impedance RC filters used for noise suppression on motor leads. |
| Factory Automation Sensor Interface | Appliance Safety Interlock |
|
Use Scenario: Converting 4–20 mA current loop signals from pressure/temperature transmitters into digital logic levels for PLC input. IC Role / Device Role / Timing Role: One comparator acts as high-threshold detector (e.g., >19 mA), second as low-threshold (e.g., <4.5 mA) for fault indication. Use Value: 2.4 V minimum supply enables operation from PLC 5 V or 3.3 V logic rails; 5 µA current minimizes burden on loop-powered sensors. |
Use Scenario: Validating door latch position and temperature cutoff in commercial ovens before enabling heating elements. IC Role / Device Role / Timing Role: Dual comparators verify two independent safety conditions (mechanical switch closure + thermistor voltage) before releasing interlock. Use Value: POR ensures both outputs remain low during AC power-up, preventing premature heater activation; −40°C to +125°C rating covers oven ambient extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV1822DGKR | Open-drain output instead of push-pull; supports 40 V pull-up independent of supply voltage. | Required when OR-ing multiple comparator outputs or translating to higher logic voltages (e.g., 24 V PLC inputs). | Select TLV1822DGKR only if open-drain functionality is needed; TLV1812DGKR eliminates external pull-ups in single-load drive scenarios. |
| LM393DR | Higher quiescent current (500 µA vs. 5 µA), no POR, narrower supply (2 V–36 V), no rail-to-rail input. | Suitable for cost-sensitive, non-critical 5 V/12 V consumer applications where power and precision are secondary. | Choose LM393DR only for legacy designs or low-performance use cases; TLV1812DGKR offers 100× lower IQ and guaranteed startup behavior. |
Compared with TLV1822DGKR, TLV1812DGKR reduces component count by eliminating pull-up resistors and simplifies layout in single-output-per-channel designs; versus LM393DR, it delivers 100× lower power, deterministic POR, and rail-to-rail input accuracy essential for modern industrial sensing.
Availability
TLV1812DGKR is available at Aetrix Electronics and suitable for industrial motor drives, factory automation sensor interfaces, and appliance safety interlocks requiring stable component supply across extended temperature and voltage ranges.
Supply support for TLV1812DGKR 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, embedded processing, and connectivity technologies for industrial, automotive, and enterprise applications.
The TLV181x family was designed specifically for high-voltage, ultra-low-power comparator applications in harsh environments-emphasizing rail-to-rail input, robust POR, and functional safety documentation support.
FAQ
What is the maximum supply voltage rating for TLV1812DGKR?
The TLV1812DGKR 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 systems without external regulation, while maintaining full rail-to-rail input performance and 5 µA quiescent current efficiency across the entire range.
Does TLV1812DGKR include Power-On Reset, and how does it behave?
Yes, TLV1812DGKR includes an internal Power-On Reset (POR) circuit that holds both 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 motor control and safety-critical systems where false triggering must be avoided during supply ramp transitions.
Can TLV1812DGKR drive a MOSFET gate directly?
Yes, TLV1812DGKR's push-pull output can source and sink ≥4 mA with ≤250 mV saturation voltage, enabling direct drive of small-signal MOSFET gates (e.g., SiC or low-Qg logic-level devices) without external buffers. For larger gate capacitances, add a series resistor to limit peak current and prevent ringing.
What is the input common-mode voltage range of TLV1812DGKR?
The TLV1812DGKR supports rail-to-rail input operation from (V−) − 0.2 V to (V+) + 0.2 V across −40°C to +125°C. This allows direct sensing of signals referenced to ground, V+, or mid-rail without attenuation or level-shifting-critical for high-side current sensing and battery monitoring applications.
Is TLV1812DGKR suitable for functional safety–compliant systems?
Yes, TLV1812DGKR is functional safety–capable: Texas Instruments provides documentation supporting ISO 26262 (ASIL B/D) and IEC 61508 (SIL 2/3) system-level analysis, including FIT rate data, failure mode assumptions, and diagnostic coverage guidance-enabling its use in safety-rated industrial controllers and appliance interlocks.
TLV1812DGKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- Push-Pull, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 2.4V ~ 40V
- :
- 3mV @ 12V
- Voltage - Input Offset (Max):
- 0.001µA @ 12V
- Current - Input Bias (Max):
- 30mA @ 12V
- Current - Output (Typ):
- 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
- :
- 8-VSSOP
TLV1812DGKR FAQ
1.How can I place an order for TLV1812DGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV1812DGKR 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 TLV1812DGKR reliable?
The price and inventory of TLV1812DGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV1812DGKR is usually 5 days.
3.What payment methods are accepted for TLV1812DGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV1812DGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV1812DGKR?
TLV1812DGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV1812DGKR 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 TLV1812DGKR?
For technical support, including TLV1812DGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV1812DGKR requirements.
6.How does Aetrix verify that TLV1812DGKR is sourced from the original manufacturer or authorized distributors?
All TLV1812DGKR 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 TLV1812DGKR meets industry standards.
7.What is the process for return or replacement of TLV1812DGKR?
All TLV1812DGKR units undergo pre-shipment inspection (PSI). If there is an issue with TLV1812DGKR, 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 TLV1812DGKR part is unused and in its original packaging.
Return procedure for TLV1812DGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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