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Texas Instruments TLV1814QDRQ1
- Part No.:
- TLV1814QDRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLV1814QDRQ1.pdf
- Description:
- AUTOMOTIVE, QUAD, MICROPOWER HIG
- Quantity:
- Payment:
- Shipping:
Inventory:2,798
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Product details
Overview
TLV1814QDRQ1 from Texas Instruments is an AEC-Q100 Grade 1 quad-channel automotive comparator with push-pull output, rail-to-rail input (–0.2 V to V+ + 0.2 V), 420 ns typical propagation delay at 12 V, 5 µA per channel quiescent current, and integrated Power-On Reset (POR) for deterministic startup. It operates across 2.4 V to 40 V supply range and supports HEV/EV powertrain voltage monitoring.
For engineers reviewing the TLV1814QDRQ1 datasheet, TLV1814QDRQ1 pinout, TLV1814QDRQ1 application, or TLV1814QDRQ1 equivalent, key selection criteria include its 40 V absolute max rating, push-pull drive capability (±4 mA output swing), POR-enabled reliability in automotive transients, and SOIC-14 package compatibility with legacy board layouts.
Technical Context
The TLV1814QDRQ1 implements a fully differential, rail-to-rail input stage with internal biasing and a robust push-pull output driver capable of sourcing/sinking ≥4 mA while maintaining <250 mV VOL/VOH at –40°C to +125°C. Its POR circuit asserts a known output state until V+ exceeds 1.7 V, preventing false triggering during battery ramp-up or brownout recovery.
It features dual ESD protection: lower clamps to V− on all pins and upper clamps to V+ on inputs/outputs (with ≤200 mV overvoltage tolerance), plus a dedicated snapback structure on open-drain variants-though TLV1814QDRQ1 uses only the standard diode-type clamp due to its push-pull architecture.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.4 V to 40 V - supports direct connection to 12 V, 24 V, and 42 V automotive battery rails without external regulation. |
| Quiescent Current | 7.5 µA per channel (typ) - enables always-on monitoring in low-power domains like body control modules. |
| Propagation Delay | 420 ns (low-to-high, 100 mV overdrive, CL = 50 pF) - suitable for fast fault detection in motor control feedback loops. |
| Input Offset Voltage | ±0.5 mV (typ), ±4 mV (max, –40°C to +125°C) - ensures accurate threshold detection in precision voltage supervision. |
| Power-On Reset Threshold | 1.7 V - guarantees stable output assertion before MCU or system controller initialization completes. |
| Rail-to-Rail Input Range | V− – 0.2 V to V+ + 0.2 V - allows direct sensing of signals near supply rails, e.g., battery voltage monitoring down to ground. |
| Output Drive Strength | Sinks/sources ≥4 mA with <250 mV VOL/VOH - drives LEDs, small MOSFET gates, or logic inputs without external buffers. |
Pinout & Package
TLV1814QDRQ1 is packaged in a 14-pin SOIC (D package) with 3.91 mm × 8.65 mm body size and exposed thermal pad connected directly to V−. Pin 12 is V−; pins 1–2 and 13–14 are outputs; pins 4–11 are input pairs; pin 3 is V+; pins 9 and 10 are NC (no internal connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 13, 14 | OUT1–OUT4 | Push-pull outputs - each can actively drive high or low; no external pull-up required; avoid shorting to opposite supply rail. |
| 3 | V+ | Positive supply input - accepts up to 40 V; powers internal bias and output stage. |
| 4, 6, 8, 10 | IN1−, IN2−, IN3−, IN4− | Inverting inputs - accept rail-to-rail voltages; must be biased within V− – 0.2 V to V+ + 0.2 V. |
| 5, 7, 9, 11 | IN1+, IN2+, IN3+, IN4+ | Non-inverting inputs - same voltage range as inverting inputs; unused channels require differential bias ≥50 mV. |
| 12 | V− | Negative supply reference - connects to system ground or battery negative; thermal pad must be soldered to this net. |
| 9, 10 | NC | No internal connection - leave floating or tie to GND; no electrical function. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - meets automotive powertrain and body electronics thermal requirements. |
| Integrated Power-On Reset (POR) | Guarantees defined output state until V+ ≥ 1.7 V - eliminates need for external reset ICs in battery-supplied systems. |
| Rail-to-rail input stage | Operates with inputs from V− – 0.2 V to V+ + 0.2 V - enables direct sensing of battery voltage, sensor outputs, or rail monitors without level-shifting. |
| Push-pull output architecture | Sources/sinks ≥4 mA with <250 mV VOL/VOH - drives capacitive loads (e.g., MOSFET gates) and resistive loads (e.g., indicator LEDs) directly. |
| Ultra-low quiescent current | 7.5 µA per channel (typ) - supports >10-year battery life in always-on vehicle subsystems like intrusion detection or telematics wake-up circuits. |
Applications
| HEV/EV Battery Monitoring | Automotive Body Control Module |
|---|---|
|
Use Scenario: Real-time monitoring of 12 V and 48 V auxiliary battery voltages for undervoltage/overvoltage fault detection. IC Role / Device Role / Timing Role: Quad comparator compares battery voltage against four independent thresholds (e.g., 10.5 V, 11.8 V, 14.2 V, 15.5 V) with simultaneous decision outputs. Use Value: Enables single-chip implementation of multi-level battery health assessment without external ADC or microcontroller polling. |
Use Scenario: Window lift anti-pinch detection using motor current sensing and position feedback comparison. IC Role / Device Role / Timing Role: Compares amplified motor current signal against dynamic threshold to detect stall conditions within 420 ns. Use Value: Meets ISO 11270 mechanical safety response time requirements by eliminating software latency in analog fault path. |
| Infotainment System Power Sequencing | ADAS Camera Power Supervision |
|
Use Scenario: Controlled power-up sequencing of display backlight, SoC, and audio amplifier rails in digital dash clusters. IC Role / Device Role / Timing Role: Four comparators monitor individual rail voltages and assert enable signals only after stable regulation is confirmed. Use Value: Prevents latch-up and bus contention during cold-start by enforcing strict hardware-enforced power order. |
Use Scenario: Redundant voltage supervision of image sensor and ISP core supplies in surround-view camera modules. IC Role / Device Role / Timing Role: Dual comparators independently verify 1.8 V and 3.3 V rails; third and fourth channels validate POR timing margins. Use Value: Supports ASIL-B decomposition by providing independent analog fault detection parallel to functional safety MCU diagnostics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV1824QDRQ1 | Open-drain output instead of push-pull; supports 40 V pull-up independent of V+ supply. | Required where wired-OR logic, level translation, or high-side switching is needed. | Choose TLV1824QDRQ1 when interfacing with 5 V or 12 V logic families or driving higher-voltage loads via external pull-up. |
| LM339QPWRQ1 | Higher quiescent current (250 µA/channel), slower propagation (1.3 µs), no POR, wider offset (±7 mV). | Legacy drop-in replacement where speed and ultra-low power are not critical. | Choose LM339QPWRQ1 only for cost-sensitive, non-safety-critical designs with relaxed timing and power budgets. |
Compared with TLV1814QDRQ1, TLV1824QDRQ1 offers flexible voltage translation but requires external pull-ups, while LM339QPWRQ1 trades performance for broad availability and lower unit cost-making TLV1814QDRQ1 optimal for new AEC-Q100-compliant designs demanding speed, low power, and deterministic startup.
Availability
TLV1814QDRQ1 is available at Aetrix Electronics and suitable for HEV/EV battery management, automotive body control modules, and infotainment power sequencing requiring stable component supply across extended temperature and long product lifecycles.
Supply support for TLV1814QDRQ1 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 deep expertise in automotive-grade IC design and AEC-Q100 qualification.
The TLV181x-Q1 family was engineered specifically for automotive voltage monitoring and fault detection, emphasizing ultra-low power, wide supply range, and robust startup behavior in harsh electrical environments.
FAQ
What is the maximum supply voltage rating for TLV1814QDRQ1?
The TLV1814QDRQ1 has an absolute maximum supply voltage (V+ to V−) of 42 V, with recommended operating range from 2.4 V to 40 V. This allows direct interface with 12 V, 24 V, and 42 V automotive battery systems without external regulators. Exceeding 42 V risks permanent damage per Absolute Maximum Ratings.
Does TLV1814QDRQ1 include Power-On Reset functionality?
Yes, TLV1814QDRQ1 integrates a hardware Power-On Reset (POR) circuit that holds outputs in a known state until V+ rises above 1.7 V. This prevents false triggering during battery ramp-up or brownout recovery-critical for automotive safety-critical subsystems where deterministic startup is mandatory.
Can TLV1814QDRQ1 drive a MOSFET gate directly?
Yes, TLV1814QDRQ1's push-pull output can source/sink ≥4 mA with <250 mV VOL/VOH, enabling direct drive of small-signal MOSFET gates (e.g., SiC or low-Vth logic-level FETs). For larger gate capacitances, verify rise/fall times against load; add series resistance if short-circuit risk exists at high supply voltages.
What is the input voltage range specification for TLV1814QDRQ1?
TLV1814QDRQ1 supports rail-to-rail inputs from V− – 0.2 V to V+ + 0.2 V across –40°C to +125°C. This allows direct sensing of battery voltage, sensor outputs, or reference signals near supply rails-eliminating need for external level-shifting circuitry in most automotive applications.
How does TLV1814QDRQ1 differ from TLV1824QDRQ1?
TLV1814QDRQ1 uses push-pull outputs (sinks and sources current), while TLV1824QDRQ1 uses open-drain outputs (sink-only, requiring external pull-up). TLV1814QDRQ1 is preferred for driving LEDs or MOSFETs directly; TLV1824QDRQ1 is selected for wired-OR logic, level translation, or 40 V pull-up independence from V+ supply.
TLV1814QDRQ1 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
TLV1814QDRQ1 FAQ
1.How can I place an order for TLV1814QDRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV1814QDRQ1 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 TLV1814QDRQ1 reliable?
The price and inventory of TLV1814QDRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV1814QDRQ1 is usually 5 days.
3.What payment methods are accepted for TLV1814QDRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV1814QDRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV1814QDRQ1?
TLV1814QDRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV1814QDRQ1 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 TLV1814QDRQ1?
For technical support, including TLV1814QDRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV1814QDRQ1 requirements.
6.How does Aetrix verify that TLV1814QDRQ1 is sourced from the original manufacturer or authorized distributors?
All TLV1814QDRQ1 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 TLV1814QDRQ1 meets industry standards.
7.What is the process for return or replacement of TLV1814QDRQ1?
All TLV1814QDRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLV1814QDRQ1, 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 TLV1814QDRQ1 part is unused and in its original packaging.
Return procedure for TLV1814QDRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLV1814QDRQ1 Tags
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LM2903DR
Texas Instruments
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LM339DR
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LM339PWR
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LM393DT
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LM2901PWR
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LM2903DT
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LM393DR
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LM239DR
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LM339APWR
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LM2903P
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LM393ADR
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NCX2200GMAZ
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