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Texas Instruments TLV1812DDFR
- Part No.:
- TLV1812DDFR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
TLV1812DDFR.pdf
- Description:
- DUAL MICROPOWER HIGH-VOLTAGE COM
- Quantity:
- Payment:
- Shipping:
Inventory:1,797
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Product details
Overview
TLV1812DDFR 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 at 12 V, and Power-On Reset (POR) for deterministic startup. It is used in motor drive voltage monitoring and industrial sensor threshold detection where low power and high-voltage tolerance are critical.
For engineers reviewing the TLV1812DDFR datasheet, TLV1812DDFR pinout, TLV1812DDFR application, or TLV1812DDFR equivalent, this page delivers verified electrical specs, dual-comparator functional context, package-validated thermal behavior, and real-world design implications - not generic timing or signal-chain summaries.
Technical Context
The TLV1812DDFR implements two independent high-voltage 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 supply ramp-up or drop below 2.4 V. Its push-pull output stage sinks and sources ≥4 mA while maintaining VOL ≤ 250 mV and VOH ≤ 250 mV across −40°C to +125°C.
Each channel operates with 150 fA input bias current and ±0.5 mV typical input offset voltage (±4 mV over full temperature range), enabling precise threshold detection in high-impedance sensing nodes. The device supports direct MOSFET gate driving and LED control without external pull-ups due to its active-high/low output capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.4 V to 40 V - enables single-supply operation in 3.3 V, 5 V, 12 V, 24 V, and 36 V industrial systems without level-shifting. |
| Quiescent Current | 7.5 µA per channel (typ.) - allows battery-backed or energy-harvesting applications to sustain >10-year operation on coin cells. |
| Propagation Delay | 420 ns (typ., 100 mV overdrive, CL = 50 pF) - supports fast response in overvoltage protection and PWM feedback loops. |
| Input Offset Voltage | ±0.5 mV (typ., 25°C); ±4 mV (max, −40°C to +125°C) - ensures <0.1% error in 5 V reference-based threshold detection. |
| Input Bias Current | 150 fA (typ.) - permits use with >100 MΩ sensor dividers without significant voltage error or drift. |
| POR Threshold | 1.7 V (VPOR) - guarantees clean output state until supply stabilizes above minimum operating voltage. |
| ESD Rating | ±2 kV HBM - meets IEC 61000-4-2 Level 2 for robustness in factory automation environments. |
Pinout & Package
TLV1812DDFR is packaged in an 8-pin SOT-23 (DDF) with 1.60 mm × 2.90 mm body size and exposed thermal pad connected directly to V−. This thermally enhanced variant improves power dissipation in compact motor-control PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1 | Comparator 1 output | Push-pull stage: actively drives high/low; no external pull-up required; avoid connection to other outputs. |
| IN1− | Inverting input of Comp 1 | Rail-to-rail capable: accepts signals from (V−) − 0.2 V to (V+) + 0.2 V; clamp-limited to ±200 mV beyond rails. |
| IN1+ | Non-inverting input of Comp 1 | Same input range as IN1−; differential input voltage must stay within specified common-mode limits. |
| V− | Negative supply terminal | Reference node for all inputs and outputs; thermal pad must be soldered directly to this net for thermal integrity. |
| IN2+ | Non-inverting input of Comp 2 | Independent channel with identical specs; usable for dual-threshold or window-comparator configurations. |
| IN2− | Inverting input of Comp 2 | Matches IN1− performance; supports separate sensor inputs or hysteresis feedback paths. |
| OUT2 | Comparator 2 output | Functionally identical to OUT1; enables simultaneous monitoring of two independent analog conditions. |
| V+ | Positive supply terminal | Accepts up to 40 V; supplies both comparators; decoupling capacitor recommended near pin. |
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 input voltage translation in wide-supply systems. |
| Power-On Reset (POR) | Holds OUT1/OUT2 low for ≤200 µs during power ramp-up - prevents false triggering in PLC I/O modules during cold start. |
| Push-pull output | Sinks/sourcing ≥4 mA with VOL/VOH ≤ 250 mV - directly drives logic inputs, LEDs, or MOSFET gates without external components. |
| Ultra-low quiescent current | 7.5 µA per channel (typ.) - enables always-on fault monitoring in battery-powered industrial sensors. |
| High ESD robustness | ±2 kV HBM - sustains handling and board-level transients in automated manufacturing lines. |
Applications
| Motor Overcurrent Detection | Industrial Sensor Threshold Monitoring |
|---|---|
Use Scenario: Detecting excessive current in BLDC motor phase legs using shunt voltage amplification. IC Role / Device Role / Timing Role: Dual comparator compares amplified shunt voltage against upper/lower thresholds to trigger shutdown or flag fault condition. Use Value: 420 ns propagation delay enables sub-microsecond response to short-circuit events; rail-to-rail input accommodates low-side shunt signals near ground. |
Use Scenario: Monitoring temperature or pressure sensor outputs in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: TLV1812DDFR provides dual independent threshold comparison for alarm and warning bands. Use Value: 150 fA input bias current avoids loading high-impedance RTD or capacitive sensor bridges; 40 V rating supports 24 V loop-powered designs. |
| Factory Automation Input Module | Appliance Safety Interlock Verification |
Use Scenario: Converting 0–10 V or 4–20 mA field signals into clean digital logic levels for microcontroller input. IC Role / Device Role / Timing Role: Comparator acts as analog-to-digital interface with configurable hysteresis via external resistors. Use Value: Push-pull output directly interfaces with 3.3 V or 5 V MCU GPIO; POR ensures known state during system reset sequences. |
Use Scenario: Verifying door latch, water level, or thermal cutoff switch status in washing machines or ovens. IC Role / Device Role / Timing Role: TLV1812DDFR monitors mechanical switch closure with noise immunity and fail-safe startup behavior. Use Value: ±4 mV max input offset ensures reliable detection of small contact voltage drops; −40°C to +125°C rating covers harsh appliance environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV1822DDFR | Open-drain output instead of push-pull; same supply range, quiescent current, and propagation delay. | Requires external pull-up; supports wired-OR logic and level translation up to 40 V independent of V+. | Select when interfacing with mixed-voltage logic or needing multiple comparators to share one interrupt line. |
| LM393DR | Wider supply range (2 V to 36 V), higher quiescent current (500 µA), slower propagation (1.3 µs), no POR, open-drain only. | Lacks rail-to-rail input and deterministic startup; suitable for cost-sensitive, non-safety-critical 5 V systems. | Choose only if legacy compatibility or ultra-low BOM cost outweighs precision, speed, and reliability requirements. |
Compared with TLV1812DDFR, TLV1822DDFR offers voltage-level flexibility at the cost of added external components, while LM393DR trades performance and safety features for legacy support and lower unit price - making TLV1812DDFR optimal for new industrial designs demanding accuracy, speed, and robust startup behavior.
Availability
TLV1812DDFR is available at Aetrix Electronics and suitable for motor drives, factory automation input modules, and appliance safety interlocks requiring stable component supply across extended temperature and voltage ranges.
Supply support for TLV1812DDFR 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 ICs.
The TLV181x family was designed specifically for high-voltage, low-power comparator applications in industrial control, motor drives, and safety-critical sensing - emphasizing rail-to-rail operation, deterministic POR, and robust ESD performance.
FAQ
What is the maximum supply voltage for TLV1812DDFR?
The absolute maximum supply voltage (V+ to V−) for TLV1812DDFR is 42 V, but the recommended operating range is 2.4 V to 40 V. Operation beyond 40 V risks permanent damage and violates the Absolute Maximum Ratings specified in the TI datasheet SNOSDC8E. For long-term reliability in 36 V systems, derating to 40 V is advised.
Does TLV1812DDFR have rail-to-rail input capability?
Yes, TLV1812DDFR supports rail-to-rail input operation from (V−) − 0.2 V to (V+) + 0.2 V across the full −40°C to +125°C temperature range. This allows direct interfacing with sensors or dividers referenced to either supply rail without external level-shifting circuitry.
How does the Power-On Reset (POR) function behave in TLV1812DDFR?
In TLV1812DDFR, the POR circuit holds both OUT1 and OUT2 low for up to 200 µs after V+ crosses 1.7 V during power-up or drops below 2.4 V during power-down. This ensures predictable output states before valid input comparison begins, preventing spurious interrupts in motor control or PLC applications.
Can TLV1812DDFR drive a MOSFET gate directly?
Yes, TLV1812DDFR's push-pull output can source/sink ≥4 mA with VOL/VOH ≤ 250 mV, enabling direct drive of low-to-medium gate charge MOSFETs (e.g., small-signal or logic-level devices). For high-Ciss power MOSFETs, a dedicated gate driver remains recommended to ensure fast switching and reduce shoot-through risk.
What is the input bias current specification for TLV1812DDFR?
TLV1812DDFR has a typical input bias current of 150 fA at 25°C, with a maximum of ±1.2 nA over the full −40°C to +125°C range. This ultra-low value minimizes voltage error in high-impedance sensor networks, such as those using 100 kΩ+ resistor dividers or piezoresistive elements.
TLV1812DDFR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SOT-23-8 Thin, TSOT-23-8
- 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):
- 0.15pA @ 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
- :
- TSOT-23-8
TLV1812DDFR FAQ
1.How can I place an order for TLV1812DDFR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV1812DDFR 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 TLV1812DDFR reliable?
The price and inventory of TLV1812DDFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV1812DDFR is usually 5 days.
3.What payment methods are accepted for TLV1812DDFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV1812DDFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV1812DDFR?
TLV1812DDFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV1812DDFR 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 TLV1812DDFR?
For technical support, including TLV1812DDFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV1812DDFR requirements.
6.How does Aetrix verify that TLV1812DDFR is sourced from the original manufacturer or authorized distributors?
All TLV1812DDFR 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 TLV1812DDFR meets industry standards.
7.What is the process for return or replacement of TLV1812DDFR?
All TLV1812DDFR units undergo pre-shipment inspection (PSI). If there is an issue with TLV1812DDFR, 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 TLV1812DDFR part is unused and in its original packaging.
Return procedure for TLV1812DDFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLV1812DDFR Tags
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LM2903DR
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LM339DR
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LM339PWR
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LM393DT
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LM393DR
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LM239DR
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LM2903P
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LM393ADR
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NCX2200GMAZ
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