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Texas Instruments TLV7042DSGR
- Part No.:
- TLV7042DSGR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
TLV7042DSGR.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:3,019
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Product details
Overview
TLV7042DSGR from Texas Instruments is a dual-channel, nanopower, open-drain output comparator optimized for ultra-low-power sensing and monitoring in battery-powered systems. It operates from 1.6V to 6.5V, draws only 315nA per channel, delivers 3µs propagation delay, features rail-to-rail input voltage range (VEE to VCC + 0.1V), and includes internal hysteresis - enabling reliable threshold detection in gas meters and motion detectors.
For engineers reviewing the TLV7042DSGR datasheet, TLV7042DSGR pinout, TLV7042DSGR application, or TLV7042DSGR equivalent, key selection criteria include its open-drain output architecture, dual-channel integration in WSON-8, 315nA quiescent current, –40°C to 125°C operating range, and compatibility with single-supply 1.6V–6.5V systems requiring clean digital transitions under noisy conditions.
Technical Context
The TLV7042DSGR implements a rail-to-rail input stage capable of accepting common-mode voltages up to VCC + 0.1V and down to VEE, supporting operation near supply rails. Its internal hysteresis (3–25mV, typ. 10mV) suppresses noise-induced output oscillation during slow-moving input transitions.
It uses a power-on-reset (POR) circuit that places the open-drain outputs in high-impedance state until VCC ≥ 1.6V is established, preventing undefined logic states during power ramp-up. The device supports single-supply operation with VEE tied to ground and offers no phase reversal under overdriven inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6V to 6.5V - compatible with 1.8V, 3.3V, and 5V systems without level-shifting |
| Quiescent Current / Channel | 315nA - enables multi-year battery life in always-on sensor nodes |
| Propagation Delay | 3µs - provides fast fault response while maintaining nanoPower efficiency |
| Input Offset Voltage | ±0.1mV (min), ±8mV (max) - ensures accurate threshold detection across temperature |
| Hysteresis | 3mV to 25mV - configurable noise immunity without external components |
| Common-Mode Input Range | VEE to VCC + 0.1V - supports rail-to-rail sensing including inputs above VCC |
| Operating Temperature | –40°C to +125°C - qualified for industrial and automotive under-hood environments |
Pinout & Package
TLV7042DSGR is housed in an 8-pin WSON package (2.0mm × 2.0mm) with exposed thermal pad, optimized for space-constrained PCB layouts and thermal performance (RθJA = 106.1°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUTA (Pin 1) | Open-drain output, Channel A | Requires external pull-up; sinks current when active low; floats high-impedance otherwise |
| INA– (Pin 2) | Inverting input, Channel A | Differential input node referenced to INA+; accepts rail-to-rail common-mode signals |
| INA+ (Pin 3) | Non-inverting input, Channel A | Differential input node referenced to INA–; supports VEE to VCC + 0.1V range |
| VCC (Pin 4) | Positive supply | Main power input; POR activates below 1.6V; must exceed 1.6V for stable output behavior |
| INB– (Pin 6) | Inverting input, Channel B | Independent differential input for second comparator; identical electrical specs to Channel A |
| OUTB (Pin 7) | Open-drain output, Channel B | Functionally identical to OUTA; enables dual-threshold or redundant sensing |
| VEE (Pin 8) | Negative supply / Ground | Reference node for single-supply operation; tied to GND in most applications |
Key Features
| Feature | Design Value |
|---|---|
| Open-drain output architecture | Enables wired-OR logic, level translation beyond VCC, and bipolar-to-single-ended conversion |
| Internal hysteresis | Eliminates need for external positive feedback resistors in noisy environments |
| No phase reversal on overdrive | Guarantees monotonic output behavior even when inputs exceed common-mode limits |
| Power-on-reset (POR) | Prevents glitching by holding outputs high-Z until VCC stabilizes ≥1.6V |
| Rail-to-rail input stage | Supports direct sensing of battery voltage, thermistor dividers, and other rail-referenced signals |
Applications
| Gas Detection System | Motion Sensing Node |
|---|---|
Use Scenario: Detecting toxic gas concentration thresholds using electrochemical sensor output. IC Role / Device Role / Timing Role: Dual comparator monitors two independent sensor thresholds (alarm/early warning) with hysteresis to reject EMI. Use Value: 315nA/channel current extends battery life >5 years in sealed wireless gas detectors; open-drain outputs interface directly with microcontroller GPIOs or alarm drivers. | Use Scenario: PIR-based occupancy detection in smart lighting or HVAC control. IC Role / Device Role / Timing Role: Compares amplified PIR signal against adjustable reference to trigger wake-up event. Use Value: 3µs propagation delay enables sub-10ms response to motion events; rail-to-rail input accommodates wide-swing analog front-end signals. |
| Smart Meter Battery Backup Monitor | Industrial Smoke Detector |
Use Scenario: Monitoring backup coin-cell voltage to initiate data retention before main power loss. IC Role / Device Role / Timing Role: One channel compares battery voltage to low-threshold; second channel validates critical supply rail integrity. Use Value: Dual-channel integration reduces component count and board area; –40°C to 125°C rating ensures reliability in outdoor meter enclosures. | Use Scenario: Interpreting optical chamber smoke density signal in UL-certified fire alarms. IC Role / Device Role / Timing Role: Comparator converts analog smoke chamber output into clean digital alarm flag with noise immunity. Use Value: Internal hysteresis prevents false alarms from transient ESD or RF coupling; 125°C rating supports operation near heat-generating alarm circuitry. |
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; packaged in SOIC-8 (4.9mm × 6.0mm) instead of WSON-8 (2.0mm × 2.0mm) | SOIC-8 requires ~7× more PCB area; better suited for prototyping or non-space-constrained designs | Select TLV7042DR if manual soldering, test probing, or thermal mass requirements favor SOIC. |
| LMV7235MFX/NOPB | Higher quiescent current (650nA), faster propagation (120ns), no internal hysteresis, different pinout | Requires external hysteresis resistor network; unsuitable for ultra-low-power long-life deployments | Choose LMV7235MFX/NOPB only when speed outweighs power budget and layout allows added components. |
Compared with TLV7042DR and LMV7235MFX/NOPB, the TLV7042DSGR uniquely balances ultra-low 315nA quiescent current, integrated hysteresis, and minimal 4mm² WSON footprint - making it optimal for production-grade, space- and energy-constrained IoT sensors.
Availability
TLV7042DSGR is available at Aetrix Electronics and suitable for gas detection systems, motion sensing nodes, smart meter battery monitors, and industrial smoke detectors requiring stable component supply across extended product lifecycles.
Supply support for TLV7042DSGR 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 company delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The TLV704x family was designed specifically for nanopower, dual-threshold sensing in battery-operated safety and environmental monitoring systems - prioritizing low ICC, robust noise immunity, and small-footprint packaging.
FAQ
What is the maximum supply voltage for TLV7042DSGR?
The absolute maximum supply voltage (VCC – VEE) for TLV7042DSGR is 7V, but the recommended operating range is 1.6V to 6.5V. Exceeding 6.5V may cause permanent damage or parametric shift, and operation above 7V violates absolute maximum ratings per TI SLVSE13J datasheet Section 5.1.
Does TLV7042DSGR require external hysteresis resistors?
No, TLV7042DSGR includes internal hysteresis (3–25mV, typ. 10mV) and does not require external resistors. This feature is confirmed in the "Features" section and Section 6.3 of the datasheet, eliminating design complexity and board space for noise-immune threshold detection.
Can TLV7042DSGR operate with input voltages above VCC?
Yes, TLV7042DSGR supports rail-to-rail common-mode input range up to VCC + 0.1V, verified in Section 5.3 (Recommended Operating Conditions) and Section 6.3. This allows direct interfacing with sensors whose output exceeds the supply rail, such as certain thermopile or photodiode amplifiers.
What is the function of the thermal pad on TLV7042DSGR's WSON package?
The exposed thermal pad on TLV7042DSGR (DSG package) must be connected directly to the VEE (ground) plane per Figure 4-6 and Section 4.2. This connection reduces RθJA to 106.1°C/W and improves thermal reliability during sustained output sinking, especially in enclosed industrial enclosures.
Is TLV7042DSGR pin-compatible with TLV7032DSGR?
Yes, TLV7042DSGR and TLV7032DSGR share identical WSON-8 pinout (DGK/DSG packages), confirmed in Table 4-2 and Figure 4-5–4-6. However, TLV7032DSGR has push-pull outputs versus open-drain - requiring schematic and layout review before substitution due to differing load drive requirements.
TLV7042DSGR 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:
- Open-Drain, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 1.6V ~ 6.5V
- :
- 8mV @ 5V
- Voltage - Input Offset (Max):
- 2pA @ 5V
- Current - Input Bias (Max):
- 33mA @ 5V
- Current - Output (Typ):
- 750nA
- Current - Quiescent (Max):
- 73dB CMRR, 77dB PSRR
- CMRR, PSRR (Typ):
- 3µs (Typ)
- Propagation Delay (Max):
- 25mV
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-WSON (2x2)
TLV7042DSGR FAQ
1.How can I place an order for TLV7042DSGR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV7042DSGR 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 TLV7042DSGR reliable?
The price and inventory of TLV7042DSGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV7042DSGR is usually 5 days.
3.What payment methods are accepted for TLV7042DSGR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV7042DSGR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV7042DSGR?
TLV7042DSGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV7042DSGR 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 TLV7042DSGR?
For technical support, including TLV7042DSGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV7042DSGR requirements.
6.How does Aetrix verify that TLV7042DSGR is sourced from the original manufacturer or authorized distributors?
All TLV7042DSGR 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 TLV7042DSGR meets industry standards.
7.What is the process for return or replacement of TLV7042DSGR?
All TLV7042DSGR units undergo pre-shipment inspection (PSI). If there is an issue with TLV7042DSGR, 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 TLV7042DSGR part is unused and in its original packaging.
Return procedure for TLV7042DSGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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