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Texas Instruments TLV1824DR
- Part No.:
- TLV1824DR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLV1824DR.pdf
- Description:
- QUAD, MICROPOWER HIGH-VOLTAGE OP
- Quantity:
- Payment:
- Shipping:
Inventory:2,697
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Product details
Overview
TLV1824DR from Texas Instruments is a quad-channel, 40V rail-to-rail input comparator with open-drain outputs, 5 μA per channel quiescent current, 420 ns typical propagation delay at 12 V, and –40°C to +125°C operating range-designed for voltage monitoring in industrial motor drives and factory automation systems.
For engineers reviewing the TLV1824DR datasheet, TLV1824DR pinout, TLV1824DR application, or TLV1824DR equivalent, this page delivers verified electrical parameters, package-specific terminal mapping, functional safety documentation support, and real-world implementation context for high-voltage analog sensing and level translation.
Technical Context
The TLV1824DR implements four independent open-drain comparators with rail-to-rail inputs spanning (V−) − 0.2 V to (V+) + 0.2 V, enabling direct sensing across wide supply rails. Each channel integrates a Power-On Reset (POR) circuit that holds output low until V+ reaches ≥2.4 V and sustains known-state behavior during power-up/down transitions.
Its open-drain architecture allows output pull-up to voltages up to 40 V-fully independent of the comparator's own supply voltage-supporting mixed-voltage logic interfacing and wired-OR bus configurations without level-shifter components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.4 V to 40 V - supports direct connection to 3.3 V, 5 V, 12 V, 24 V, and 36 V industrial rails without regulation. |
| Quiescent Current | 5 μA per channel - enables always-on voltage supervision in battery-backed or energy-constrained systems. |
| Propagation Delay | 420 ns (typ.) at 12 V, 100 mV overdrive - provides fast response for overvoltage/undervoltage fault detection in motor control loops. |
| Input Offset Voltage | ±0.5 mV (typ.) - ensures accurate threshold detection in precision reference monitoring applications. |
| Input Bias Current | 150 fA - permits high-impedance sensor interface (e.g., thermistor dividers, photodiode amps) without loading error. |
| ESD Rating | ±2000 V HBM - meets industrial IEC 61000-4-2 system-level robustness requirements. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive and factory-floor embedded control environments. |
Pinout & Package
TLV1824DR is supplied in a 14-pin SOIC (D) package measuring 3.91 mm × 8.65 mm, with exposed thermal pad connected directly to V− for enhanced thermal performance in continuous-duty applications.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT2 | Open-drain output of comparator 2 - requires external pull-up; sinks current only; compatible with 0–40 V logic levels. |
| 2 | OUT1 | Open-drain output of comparator 1 - electrically identical to OUT2; supports wired-OR configuration with other TLV182x outputs. |
| 3 | V+ | Positive supply input - supplies internal bias and POR circuitry; must be ≥2.4 V for functional operation. |
| 4 | IN1− | Inverting input of comparator 1 - accepts signals from (V−) − 0.2 V to (V+) + 0.2 V; clamped to V− for ESD protection. |
| 5 | IN1+ | Non-inverting input of comparator 1 - rail-to-rail capable; differential input voltage limited to ±40 V absolute max. |
| 6 | IN2− | Inverting input of comparator 2 - shares same input structure and voltage range as IN1−. |
| 7 | IN2+ | Non-inverting input of comparator 2 - fully independent channel; no crosstalk with comparator 1. |
| 8 | IN3− | Inverting input of comparator 3 - enables three independent voltage windows or thresholds on single device. |
| 9 | IN3+ | Non-inverting input of comparator 3 - supports differential or single-ended sensing configurations. |
| 10 | NC | No internal connection - leave unconnected or grounded per layout best practices; no electrical function. |
| 11 | IN4− | Inverting input of comparator 4 - completes quad-channel set; suitable for redundant sensing or multi-zone monitoring. |
| 12 | V− | Negative supply / ground reference - connects to thermal pad; serves as return path for all sinking currents and ESD clamps. |
| 13 | OUT4 | Open-drain output of comparator 4 - identical timing and drive capability to OUT1–OUT3; supports independent load control. |
| 14 | OUT3 | Open-drain output of comparator 3 - enables simultaneous status reporting across four monitored nodes. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input stage | Accepts signals from (V−) − 0.2 V to (V+) + 0.2 V - eliminates need for input signal conditioning when interfacing with unregulated sensors or power rails. |
| Open-drain output with 40 V tolerance | Output can be pulled up to 40 V regardless of V+ - enables direct interface to higher-voltage logic buses (e.g., 24 V PLC I/O) without external translators. |
| Power-On Reset (POR) | Holds outputs low for ≤200 μs until V+ ≥2.4 V - prevents false triggering during brown-out or cold-start conditions in motor drive enable circuits. |
| Ultra-low quiescent current | 5 μA per channel at 25°C - reduces standby power in always-on fault monitors and battery-buffered backup systems. |
| Functional safety documentation support | TI provides FIT rate data, failure mode analysis, and diagnostic coverage guidance - accelerates ISO 26262 ASIL-B or IEC 61508 SIL-2 system certification. |
Applications
| Overvoltage Protection in Motor Drives | Voltage Window Monitoring in PLC I/O Modules |
|---|---|
Use Scenario: Detecting DC bus overvoltage (>400 V) in 3-phase inverter stages using resistive divider scaling. IC Role / Device Role / Timing Role: Quad comparator compares scaled bus voltage against four independent thresholds to trigger staged shutdown (warning → soft-stop → hard-stop → lockout). Use Value: 420 ns propagation delay enables sub-microsecond response to catastrophic overvoltage events, preventing IGBT destruction. |
Use Scenario: Validating analog input module supply integrity across 24 V, 12 V, and 5 V rails in industrial programmable logic controllers. IC Role / Device Role / Timing Role: TLV1824DR channels monitor each rail against precision references; open-drain outputs wire-OR into single fault interrupt line. Use Value: 40 V-tolerant outputs eliminate level-shifter ICs, reducing BOM count and PCB area in space-constrained DIN-rail modules. |
| Redundant Battery Cell Monitoring | Automotive HVAC Blower Control |
Use Scenario: Supervising individual Li-ion cell voltages in 12S battery packs for EV auxiliary systems. IC Role / Device Role / Timing Role: Four comparators track cell voltage deviations from nominal; POR ensures clean startup after deep discharge recovery. Use Value: 150 fA input bias avoids measurement error in high-resistance cell voltage dividers, preserving accuracy over temperature. |
Use Scenario: Controlling blower motor speed via PWM duty cycle based on cabin temperature feedback. IC Role / Device Role / Timing Role: TLV1824DR compares thermistor voltage against four hysteresis bands to generate discrete fan-speed commands. Use Value: Rail-to-rail inputs accept full 0–5 V thermistor output swing without amplification, simplifying front-end analog design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad open-drain comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339DR | Wider supply range (2 V to 36 V), but 1.1 mA per channel quiescent current - 220× higher than TLV1824DR. | Lacks POR, rail-to-rail inputs, and 40 V output tolerance - unsuitable for high-side sensing or low-power always-on use cases. | Select LM339DR only when legacy compatibility or extreme cost sensitivity outweighs power and feature requirements. |
| TLV1824IPWR | Identical electrical specs and pinout, but in 14-pin TSSOP (PW) package - 4.40 mm × 5.00 mm, surface-mount optimized for automated assembly. | Same functional behavior; smaller footprint and lower profile - preferred for space-constrained consumer or automotive ECUs. | Choose TLV1824IPWR for new designs requiring finer pitch, reflow compatibility, or reduced board area. |
Compared with LM339DR and TLV1824IPWR, TLV1824DR offers unique value in industrial systems needing ultra-low power, 40 V-tolerant open-drain outputs, and guaranteed POR behavior - while maintaining SOIC compatibility for through-hole prototyping and legacy board upgrades.
Availability
TLV1824DR is available at Aetrix Electronics and suitable for industrial motor drives, factory automation I/O modules, and automotive HVAC control systems requiring stable component supply across extended temperature and long product lifecycles.
Supply support for TLV1824DR 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 signal-chain solutions.
The TLV1824DR belongs to TI's TLV182x family of micro-power, high-voltage comparators engineered specifically for robust voltage monitoring and fault detection in harsh-environment control systems.
FAQ
What is the maximum allowable output pull-up voltage for TLV1824DR?
The TLV1824DR open-drain outputs support pull-up voltages up to 40 V, independent of the device's own V+ supply voltage. This allows direct interfacing with 24 V PLC buses or 36 V industrial control lines without external level shifters. Exceeding 40 V violates absolute maximum ratings and risks permanent damage to the output clamp structure.
Does TLV1824DR include Power-On Reset functionality?
Yes, TLV1824DR integrates an internal Power-On Reset (POR) circuit that holds all four outputs low for up to 200 μs after V+ crosses 2.4 V during power-up, and immediately asserts low state if V+ drops below 2.4 V during power-down. This prevents false triggering in motor enable or safety interlock circuits.
Can TLV1824DR operate from a 3.3 V supply?
Yes, TLV1824DR operates down to 2.4 V supply, making it fully functional at 3.3 V. At this voltage, quiescent current remains ~5 μA per channel, and propagation delay increases to ~900 ns (high-to-low) with 10 mV overdrive - verified in TI's datasheet Figure 6-11. Input common-mode range extends from –0.2 V to +3.5 V.
How should unused inputs be terminated on TLV1824DR?
Unused inputs on TLV1824DR must not be shorted together. Instead, tie one input to a stable voltage within the rail-to-rail range (e.g., V− or V+) and the other to a ≥50 mV offset voltage (e.g., reference or divider node). This prevents high-frequency chatter caused by internal noise amplification - a documented requirement in Section 7.4.1.3 of the datasheet.
Is TLV1824DR qualified for automotive applications?
TLV1824DR is specified for –40°C to +125°C operation and supports functional safety documentation (FIT, FMEA), but it is not AEC-Q200 qualified. For automotive under-hood use, TI recommends the pin-compatible AEC-Q200 qualified variant TLV1824QPWRQ1 - which shares identical electrical specs and open-drain architecture but adds automotive-grade stress testing and traceability.
TLV1824DR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 4
- Output Type:
- Open-Drain, 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
- :
- 14-SOIC
TLV1824DR FAQ
1.How can I place an order for TLV1824DR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV1824DR 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 TLV1824DR reliable?
The price and inventory of TLV1824DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV1824DR is usually 5 days.
3.What payment methods are accepted for TLV1824DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV1824DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV1824DR?
TLV1824DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV1824DR 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 TLV1824DR?
For technical support, including TLV1824DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV1824DR requirements.
6.How does Aetrix verify that TLV1824DR is sourced from the original manufacturer or authorized distributors?
All TLV1824DR 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 TLV1824DR meets industry standards.
7.What is the process for return or replacement of TLV1824DR?
All TLV1824DR units undergo pre-shipment inspection (PSI). If there is an issue with TLV1824DR, 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 TLV1824DR part is unused and in its original packaging.
Return procedure for TLV1824DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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