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Texas Instruments TLV1812DSGR
- Part No.:
- TLV1812DSGR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
TLV1812DSGR.pdf
- Description:
- DUAL MICROPOWER HIGH-VOLTAGE COM
- Quantity:
- Payment:
- Shipping:
Inventory:2,366
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Product details
Overview
TLV1812DSGR 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 TLV1812DSGR datasheet, TLV1812DSGR pinout, TLV1812DSGR application, or TLV1812DSGR equivalent, this page delivers verified electrical specs, dual-comparator functional context, package-confirmed thermal performance, and real-world implementation guidance for high-voltage, low-power sensing circuits.
Technical Context
The TLV1812DSGR 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 during power ramp-up until V+ exceeds 2.4 V and stabilizes for ≥200 µs. Its push-pull output stage sinks and sources up to 4 mA while maintaining VOL ≤ 250 mV at TA = −40°C to +125°C.
Each channel operates independently with 150 fA typical input bias current, 500 µV max input offset voltage, and 100 dB PSRR across 2.4 V–40 V supply range-enabling precise threshold detection in noisy 24 V/40 V industrial bus environments without external level-shifting or conditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.4 V to 40 V - supports direct connection to 24 V DC industrial rails and 36 V automotive batteries without regulation. |
| Quiescent Current | 5 µA per channel - enables always-on monitoring in battery-backed or energy-harvesting systems with multi-year runtime. |
| Propagation Delay | 420 ns (TYP) at 100 mV overdrive - provides fast response for overcurrent protection and PWM edge detection in motor gate drivers. |
| Input Offset Voltage | ±0.5 mV (TYP), ±4 mV (MAX over temp) - ensures accurate zero-crossing and reference comparison in precision sensor interfaces. |
| Rail-to-Rail Input Range | (V−) − 0.2 V to (V+) + 0.2 V - accepts signals beyond supply rails for direct interfacing with unbuffered transducers and shunt amplifiers. |
| Power-On Reset Threshold | 2.4 V with 200 µs hold time - guarantees known low-state output during brown-in/brown-out, preventing spurious actuation in PLC I/O modules. |
| ESD Rating | ±2 kV HBM - meets IEC 61000-4-2 Level 3 system-level robustness requirements for factory floor equipment. |
Pinout & Package
TLV1812DSGR is housed in an 8-pin WSON (DSG) package measuring 2.00 mm × 2.00 mm with exposed thermal pad on underside, optimized for high-density PCB layouts and thermal dissipation in compact industrial controllers.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1 | Comparator 1 output | Push-pull stage capable of sourcing/sinking ≥4 mA; connects directly to MOSFET gate or LED anode without pull-up. |
| IN1− | Inverting input, Channel 1 | High-impedance node (150 fA bias) accepting signals down to (V−) − 0.2 V; requires no external clamping below 200 mV overdrive. |
| IN1+ | Non-inverting input, Channel 1 | Matches IN1− in common-mode range and offset; used for reference-based threshold detection in analog front-ends. |
| V− | Negative supply | Reference return for both comparators and thermal pad; exposed pad must be soldered directly to V− plane for thermal compliance. |
| IN2+ | Non-inverting input, Channel 2 | Independent input for second sensing path; enables dual-threshold logic (e.g., window comparator with external resistors). |
| IN2− | Inverting input, Channel 2 | Paired with IN2+ for second comparator; supports differential signal monitoring or redundant fault detection. |
| OUT2 | Comparator 2 output | Functionally identical to OUT1; allows simultaneous monitoring of two independent analog conditions. |
| V+ | Positive supply | Accepts 2.4 V–40 V; powers internal bias, POR, and output stages; decoupling capacitor required within 1 cm. |
Key Features
| Feature | Design Value |
|---|---|
| Push-pull output | Eliminates need for external pull-up resistors in 24 V control logic, reducing BOM count and board space in DIN-rail I/O modules. |
| Power-On Reset (POR) | Guarantees OUT1/OUT2 remain low until V+ ≥ 2.4 V and stabilizes, preventing false triggering during cold start of HVAC or pump controllers. |
| Rail-to-rail input | Supports direct interface with ±10 V industrial sensors and 0–40 V battery monitors without attenuation or level-shifting circuitry. |
| Ultra-low quiescent current | 5 µA per channel enables continuous operation in battery-powered condition monitoring nodes with >10-year shelf life. |
| 40 V absolute max rating | Withstands 42 V transient surges per JEDEC JESD78, suitable for 36 V nominal systems with ISO 7637-2 pulse 5a immunity. |
Applications
| Motor Overcurrent Protection | Industrial PLC Analog Input Module |
|---|---|
Use Scenario: Detects excessive current in 24 V DC brushless motor phase legs using shunt voltage feedback. IC Role / Device Role / Timing Role: Dual comparator compares shunt voltage against upper/lower thresholds to generate immediate shutdown signals. Use Value: 420 ns propagation delay enables sub-microsecond fault response, meeting SIL-2 reaction time requirements for servo drives. |
Use Scenario: Monitors 4–20 mA loop integrity and detects open-wire faults in distributed I/O terminals. IC Role / Device Role / Timing Role: One channel validates loop current presence; second channel checks for overrange/underrange conditions. Use Value: Rail-to-rail input accepts full 0–24 V loop compliance voltage; POR prevents false alarms during hot-swap insertion. |
| Automotive Battery Monitoring | Appliance Door Interlock Safety Circuit |
Use Scenario: Tracks 12 V/24 V vehicle battery voltage during cranking and charging cycles to enable load shedding. IC Role / Device Role / Timing Role: Compares sensed battery voltage against programmable thresholds to control relay drivers. Use Value: 2.4 V minimum supply allows operation during deep cranking dips; 40 V rating survives load-dump transients. |
Use Scenario: Verifies mechanical door latch position before enabling microwave oven magnetron or washing machine drum rotation. IC Role / Device Role / Timing Role: Dual comparator validates redundant microswitch signals to enforce hardware-enforced safety interlock. Use Value: Push-pull outputs drive relays directly; low 5 µA current supports always-on monitoring without standby drain. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV1822DSGR | 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. | Select when interfacing with mixed-voltage systems or implementing fault-bus arbitration. |
| LM393DR | Higher 1 mA quiescent current, 1.5 µs propagation delay, 36 V max supply, no POR or rail-to-rail input. | Limited to lower-speed, non-safety-critical 5 V/12 V applications; lacks deterministic startup behavior. | Choose only for cost-sensitive legacy designs where speed, power, and reliability margins are relaxed. |
Compared with TLV1822DSGR, TLV1812DSGR eliminates external pull-ups and simplifies layout but cannot perform wired-OR; versus LM393DR, it delivers 200× lower power, 4× faster response, and guaranteed safe startup-critical for modern industrial safety architectures.
Availability
TLV1812DSGR is available at Aetrix Electronics and suitable for industrial motor drives, factory automation I/O modules, and automotive battery management systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TLV1812DSGR 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 specifically for high-voltage, ultra-low-power sensing in harsh environments-targeting applications like programmable logic controllers, motor control safety monitors, and battery-powered condition-based maintenance nodes.
FAQ
What is the maximum supply voltage the TLV1812DSGR can withstand?
The TLV1812DSGR has an absolute maximum supply voltage rating of 42 V between V+ and V− pins. It operates continuously across 2.4 V to 40 V, making it suitable for 36 V nominal industrial systems and compatible with ISO 7637-2 load-dump transients. Exceeding 42 V risks permanent damage per datasheet Section 5.1.
Does the TLV1812DSGR require external pull-up resistors on its outputs?
No. The TLV1812DSGR features push-pull outputs capable of both sourcing and sinking current, eliminating the need for external pull-up resistors. Each output can drive LEDs, MOSFET gates, or logic inputs directly-reducing component count and PCB area in space-constrained designs such as DIN-rail mounted I/O modules.
How does the Power-On Reset (POR) function behave in the TLV1812DSGR?
The TLV1812DSGR's POR circuit holds both OUT1 and OUT2 low for up to 200 µs after V+ crosses 2.4 V during power-up, and reactivates if V+ drops below 2.4 V. This ensures deterministic startup in programmable logic controllers and motor drives, preventing false triggering of downstream actuators during brown-in or brown-out events.
Can the TLV1812DSGR interface directly with 0–10 V industrial sensors?
Yes. Its rail-to-rail input range extends from (V−) − 0.2 V to (V+) + 0.2 V, allowing direct connection to 0–10 V sensors when powered from a 12 V supply. No external level-shifting or attenuation is needed-enabling simplified analog front-end design in PLC analog input cards and process controllers.
What thermal management is required for the TLV1812DSGR in continuous operation?
The TLV1812DSGR in DSG (WSON) package requires the exposed thermal pad to be soldered directly to the V− copper plane. With RθJA = 79.9°C/W and max junction temperature of 150°C, sustained operation at 40 V/5 µA per channel generates minimal self-heating (<1 mW), but proper pad connection ensures reliability under ambient temperatures up to +125°C per datasheet Section 5.5.
TLV1812DSGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-WFDFN Exposed Pad
- 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
- :
- 8-WSON (2x2)
TLV1812DSGR FAQ
1.How can I place an order for TLV1812DSGR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV1812DSGR 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 TLV1812DSGR reliable?
The price and inventory of TLV1812DSGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV1812DSGR is usually 5 days.
3.What payment methods are accepted for TLV1812DSGR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV1812DSGR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV1812DSGR?
TLV1812DSGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV1812DSGR 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 TLV1812DSGR?
For technical support, including TLV1812DSGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV1812DSGR requirements.
6.How does Aetrix verify that TLV1812DSGR is sourced from the original manufacturer or authorized distributors?
All TLV1812DSGR 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 TLV1812DSGR meets industry standards.
7.What is the process for return or replacement of TLV1812DSGR?
All TLV1812DSGR units undergo pre-shipment inspection (PSI). If there is an issue with TLV1812DSGR, 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 TLV1812DSGR part is unused and in its original packaging.
Return procedure for TLV1812DSGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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