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Texas Instruments TLV7042QDGKRQ1
- Part No.:
- TLV7042QDGKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TLV7042QDGKRQ1.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,793
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Product details
Overview
TLV7042QDGKRQ1 from Texas Instruments is a dual-channel, nanopower, open-drain comparator with rail-to-rail input capability, 315nA quiescent current, 3µs propagation delay, and operation from 1.6V to 6.5V supply. It delivers precision voltage monitoring in battery-powered gas detectors and motion sensors where ultra-low power and noise immunity are critical.
For engineers reviewing the TLV7042QDGKRQ1 datasheet, TLV7042QDGKRQ1 pinout, TLV7042QDGKRQ1 application, or TLV7042QDGKRQ1 equivalent, key selection factors include its open-drain output architecture, internal hysteresis, –40°C to 125°C automotive-grade temperature range, and VSSOP-8 package compatibility with space-constrained PCB layouts.
Technical Context
The TLV7042QDGKRQ1 implements a rail-to-rail input stage that accepts common-mode voltages from VEE to VCC + 0.1V, enabling direct sensing of signals near supply rails. Its internal hysteresis (3–25mV) suppresses false triggering in noisy environments without external components.
As part of the TLV704x family, it features a dedicated power-on-reset (POR) circuit that maintains high-impedance output during supply ramp-up below 1.6V - ensuring glitch-free startup in automotive and industrial systems requiring deterministic initial state behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6V to 6.5V - supports single-supply operation across 1.8V, 3.3V, and 5V systems without level-shifting. |
| Quiescent Current | 315nA per channel - enables multi-year battery life in always-on smoke detectors and portable gas meters. |
| Propagation Delay | 3µs at 100mV overdrive - provides fast fault response while maintaining nanoPower efficiency. |
| Input Offset Voltage | ±0.1mV (min), ±8mV (max) - ensures accurate threshold detection in precision voltage monitoring circuits. |
| Hysteresis | 3mV to 25mV - eliminates chatter on slow-moving inputs like thermistor-based temperature sensing. |
| Operating Temperature | –40°C to +125°C - qualified for automotive under-hood and industrial control applications. |
| Output Type | Open-drain - allows wired-OR logic, level translation beyond VCC, and interface with 3.3V/5V microcontrollers. |
Pinout & Package
The TLV7042QDGKRQ1 is housed in an 8-pin VSSOP (DGK) package measuring 3.00mm × 3.00mm, optimized for thermal performance and board-space efficiency in compact designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUTA (Pin 1) | Output A | Open-drain output for channel A - requires external pull-up for logic-high assertion; compatible with I²C bus signaling. |
| INA– (Pin 2) | Inverting Input A | Differential input node for channel A - accepts rail-to-rail common-mode voltage up to VCC + 0.1V. |
| INA+ (Pin 3) | Non-inverting Input A | Differential input node for channel A - enables threshold comparison with hysteresis-enabled stability. |
| VCC (Pin 4) | Positive Supply | Main power rail connection - must exceed 1.6V for POR release and functional operation. |
| INB– (Pin 6) | Inverting Input B | Differential input node for channel B - electrically isolated from channel A for independent signal monitoring. |
| OUTB (Pin 7) | Output B | Open-drain output for channel B - supports dual independent alarm outputs in safety-critical systems. |
| VEE (Pin 8) | Negative Supply / Ground | Reference return path - used as ground in single-supply configurations; supports true bipolar operation if needed. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input stage | Accepts common-mode voltages from VEE to VCC + 0.1V - enables direct sensing of battery voltage or sensor outputs near supply rails. |
| Internal hysteresis | 3–25mV programmable via supply voltage - eliminates need for external feedback resistors in noise-prone industrial environments. |
| Power-on-reset (POR) | Asserts high-impedance output until VCC ≥ 1.6V - prevents spurious alarms during cold-start or brownout conditions. |
| Ultra-low input bias current | 2pA maximum - minimizes loading error when interfacing with high-impedance sources like pH electrodes or photodiodes. |
| Automotive qualification | AEC-Q100 Grade 1 - certified for use in automotive electronics including ADAS sensor modules and body control units. |
Applications
| Gas Detection System | Motion Sensing Node |
|---|---|
Use Scenario: Detects toxic gas concentration thresholds in portable handheld analyzers using electrochemical sensors with mV-level output swings. IC Role / Device Role / Timing Role: Dual comparator monitors upper/lower alarm thresholds independently; open-drain outputs drive LED indicators and MCU interrupt lines. Use Value: 315nA quiescent current extends battery life to >5 years; internal hysteresis rejects EMI-induced false triggers near HVAC equipment. | Use Scenario: Triggers wake-up events in battery-powered PIR motion sensors deployed in smart building occupancy controls. IC Role / Device Role / Timing Role: One channel detects motion-triggered voltage change; second channel validates signal persistence to avoid false positives from ambient noise. Use Value: 3µs propagation delay enables sub-10ms response time; rail-to-rail input captures full sensor dynamic range without external amplification. |
| Smoke & Heat Detector | Servo Drive Position Monitor |
Use Scenario: Monitors thermistor and photoelectric chamber outputs in residential/commercial fire alarm panels requiring UL/EN54 compliance. IC Role / Device Role / Timing Role: Dual-channel configuration implements dual-sensor correlation logic to reduce nuisance alarms; operates across –40°C to +125°C ambient range. Use Value: AEC-Q100 Grade 1 qualification ensures reliability in high-temperature enclosures; open-drain outputs interface directly with legacy 5V alarm bus infrastructure. | Use Scenario: Validates motor position feedback from resistive potentiometers in industrial servo drives where ESD and voltage transients are common. IC Role / Device Role / Timing Role: Compares pot wiper voltage against reference thresholds to detect end-of-travel or mechanical stall conditions. Use Value: 2pA input bias current prevents measurement drift in high-resistance position networks; 1.6V minimum supply supports operation during brownout conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual open-drain comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV7042DR | Same electrical specs; SOIC-8 package (4.9mm × 3.9mm) vs VSSOP-8 (3.0mm × 3.0mm) | Larger footprint; lower thermal resistance (RθJA = 131.0°C/W vs 211.7°C/W) but higher board area cost | Select TLV7042DR only when SOIC hand-soldering or legacy footprint compatibility is required. |
| LMV7235M5X | Higher quiescent current (1.1µA), no internal hysteresis, SC70-5 single-channel only | Requires external hysteresis network and two devices for dual functionality; unsuitable for ultra-low-power designs | Choose LMV7235M5X only if higher speed (45ns) outweighs 3.5× higher current draw and added component count. |
Compared with TLV7042DR and LMV7235M5X, the TLV7042QDGKRQ1 uniquely combines automotive qualification, integrated hysteresis, and minimal 3.0mm × 3.0mm VSSOP packaging - making it optimal for space- and power-constrained safety-critical systems where reliability and layout simplicity are prioritized.
Availability
TLV7042QDGKRQ1 is available at Aetrix Electronics and suitable for gas detection systems, motion sensing nodes, smoke & heat detectors, and servo drive position monitors requiring stable component supply across automotive and industrial production cycles.
Supply support for TLV7042QDGKRQ1 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 precision signal conditioning and low-power design.
The TLV704x product line was engineered specifically for ultra-low-power voltage monitoring in battery-operated safety and environmental sensing applications - emphasizing nanopower operation, robust noise immunity, and automotive-grade reliability.
FAQ
What is the minimum supply voltage required for TLV7042QDGKRQ1 to operate correctly?
The TLV7042QDGKRQ1 requires a minimum supply voltage of 1.6V to ensure functional operation and release from power-on-reset. Below this threshold, the device holds outputs in high-impedance state. This specification is validated across the full –40°C to +125°C temperature range and applies to both channels of the TLV7042QDGKRQ1.
Does TLV7042QDGKRQ1 include internal hysteresis, and how does it affect threshold stability?
Yes, the TLV7042QDGKRQ1 integrates internal hysteresis ranging from 3mV to 25mV depending on supply voltage and temperature. This feature eliminates oscillation on slow-moving or noisy inputs - such as thermistor outputs in smoke detectors - without requiring external feedback components. The hysteresis is inherent to the TLV7042QDGKRQ1 silicon design and active across its entire operating range.
Can TLV7042QDGKRQ1 be used in single-supply configurations with ground-referenced inputs?
Yes, the TLV7042QDGKRQ1 supports true single-supply operation with VEE connected to ground. Its rail-to-rail input stage accepts common-mode voltages from 0V (VEE) to VCC + 0.1V, allowing direct interface with ground-referenced sensors like potentiometers or resistive bridges. This capability is fully specified and tested for the TLV7042QDGKRQ1 in all recommended operating conditions.
What is the output behavior of TLV7042QDGKRQ1 during power-up?
During power-up, the TLV7042QDGKRQ1's internal power-on-reset (POR) circuit holds both outputs (OUTA and OUTB) in high-impedance state until VCC reaches and sustains ≥1.6V for at least 200µs. This behavior prevents false triggering in safety-critical applications and is a defined characteristic of the TLV7042QDGKRQ1, not dependent on external circuitry.
Is TLV7042QDGKRQ1 qualified for automotive applications, and what standard does it meet?
Yes, TLV7042QDGKRQ1 is AEC-Q100 Grade 1 qualified, meaning it is certified for automotive applications with ambient operating temperatures from –40°C to +125°C. This qualification covers stress testing for reliability, including temperature cycling, humidity bias, and ESD robustness - confirming suitability for under-hood and body electronics where the TLV7042QDGKRQ1 is deployed.
TLV7042QDGKRQ1 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:
- Open-Drain, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 1.6V ~ 6.5V
- :
- 8mV
- Voltage - Input Offset (Max):
- 5pA (Typ)
- Current - Input Bias (Max):
- 33mA
- Current - Output (Typ):
- 750nA
- Current - Quiescent (Max):
- 73dB CMRR, 77dB PSRR
- CMRR, PSRR (Typ):
- 3µs
- Propagation Delay (Max):
- 25mV
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- Automotive
- Grade:
- AEC-Q100
- Qualification:
- Surface Mount
- :
- 8-VSSOP
TLV7042QDGKRQ1 FAQ
1.How can I place an order for TLV7042QDGKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV7042QDGKRQ1 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 TLV7042QDGKRQ1 reliable?
The price and inventory of TLV7042QDGKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV7042QDGKRQ1 is usually 5 days.
3.What payment methods are accepted for TLV7042QDGKRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV7042QDGKRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV7042QDGKRQ1?
TLV7042QDGKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV7042QDGKRQ1 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 TLV7042QDGKRQ1?
For technical support, including TLV7042QDGKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV7042QDGKRQ1 requirements.
6.How does Aetrix verify that TLV7042QDGKRQ1 is sourced from the original manufacturer or authorized distributors?
All TLV7042QDGKRQ1 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 TLV7042QDGKRQ1 meets industry standards.
7.What is the process for return or replacement of TLV7042QDGKRQ1?
All TLV7042QDGKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLV7042QDGKRQ1, 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 TLV7042QDGKRQ1 part is unused and in its original packaging.
Return procedure for TLV7042QDGKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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