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Texas Instruments TLV7031DCKR
- Part No.:
- TLV7031DCKR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TLV7031DCKR.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,033
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Product details
Overview
TLV7031DCKR from Texas Instruments is a single-channel, nanopower, rail-to-rail input comparator with push-pull output, designed for ultra-low-power voltage monitoring in space-constrained battery-powered systems. It operates from 1.6V to 6.5V, draws only 315nA quiescent current, delivers 3µs propagation delay, and features internal hysteresis and no phase reversal under overdrive - enabling reliable fault detection in gas detectors and portable audio devices.
For engineers reviewing the TLV7031DCKR datasheet, TLV7031DCKR pinout, TLV7031DCKR application, or TLV7031DCKR equivalent, key selection criteria include its SC-70-5 package footprint, 315nA supply current at 1.8V, ±0.1mV typical input offset, rail-to-rail common-mode range (VEE to VCC + 0.1V), and push-pull output capable of sourcing/sinking 3mA at 5V.
Technical Context
The TLV7031DCKR implements a precision CMOS input stage with rail-to-rail common-mode operation up to VCC + 0.1V and down to VEE – 0.1V, supporting single-supply use with ground-referenced inputs. Its internal hysteresis (2–17mV) suppresses noise-induced output oscillation without external components.
It integrates a power-on-reset (POR) circuit that holds the output low during power ramp-up until VCC ≥ 1.6V, ensuring defined startup behavior. The push-pull output drives capacitive loads directly and interfaces with logic gates or LEDs without pull-up resistors.
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; supports direct Li-ion or coin-cell operation |
| Quiescent Current | 315nA at 1.8V - enables >10-year battery life in always-on sensor monitors |
| Propagation Delay | 3µs at 5V, 100mV overdrive - fast enough for real-time fault response in smoke detectors |
| Input Offset Voltage | ±0.1mV (typ), ±8mV (max) - ensures accurate threshold detection across temperature |
| Common-Mode Range | VEE to VCC + 0.1V - accepts inputs beyond supply rails, simplifying sensor interface design |
| Output Type | Push-pull - eliminates need for external pull-up; sinks/sours 3mA at 5V for direct LED or logic drive |
| Hysteresis | 2–17mV (typ 7mV) - prevents chatter on slow-moving signals like thermistor outputs |
Pinout & Package
TLV7031DCKR is packaged in a 5-pin SC-70 (DCK) package measuring 2.00mm × 1.25mm, optimized for high-density PCB layouts in portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT | Output | Push-pull digital output; actively drives high/low without external resistors |
| 2: IN− | Inverting Input | Differential input node; accepts rail-to-rail voltages from VEE − 0.1V to VCC + 0.1V |
| 3: IN+ | Non-Inverting Input | Differential input node; same rail-to-rail range as IN−; used for threshold comparison |
| 4: VEE | Negative Supply / Ground | Reference node for single-supply operation; must be connected to system ground or lowest potential |
| 5: VCC | Positive Supply | Primary power rail; POR activates below 1.6V, holding OUT low until stable |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input stage | Accepts input signals 0.1V beyond VCC or below VEE - eliminates level-shifting for sensor outputs |
| Internal hysteresis | 2–17mV built-in - removes need for external feedback resistor network in noisy environments |
| No phase reversal | Maintains correct output polarity even when inputs exceed common-mode range - critical for safety-critical fault detection |
| Power-on-reset (POR) | Holds OUT low until VCC ≥ 1.6V - guarantees known state at power-up, preventing spurious triggers |
| Ultra-low ICC | 315nA at 1.8V - enables multi-year operation from CR2032 coin cells in wireless sensors |
Applications
| Gas Detection System | Portable Audio Power Management |
|---|---|
Use Scenario: Monitoring electrochemical sensor output voltage against fixed threshold to detect hazardous gas concentration. IC Role / Device Role / Timing Role: Precision voltage comparator converting analog sensor signal into clean digital alarm flag. Use Value: 315nA quiescent current extends battery life; internal hysteresis rejects EMI-induced noise on long sensor traces. | Use Scenario: Detecting headset insertion to enable audio path switching and disable charging circuitry in earbuds. IC Role / Device Role / Timing Role: Low-power presence detector interfacing mechanical switch or impedance-sensing circuit. Use Value: 3µs propagation delay ensures immediate system response; SC-70 package fits within tight earbud PCB area. |
| Smart Smoke Detector | Industrial Motion Sensor Node |
Use Scenario: Comparing photodiode amplifier output to adjustable threshold to identify smoke-induced light scattering. IC Role / Device Role / Timing Role: Fault-monitoring comparator in battery-backed safety system requiring guaranteed startup behavior. Use Value: POR circuit holds output low during brown-out, preventing false alarms; –40°C to 125°C rating supports attic deployment. | Use Scenario: Converting PIR sensor's slow-rising output into a clean digital wake-up signal for ultra-low-power microcontroller. IC Role / Device Role / Timing Role: Signal conditioning comparator with hysteresis to debounce motion-triggered analog envelope. Use Value: Rail-to-rail input accepts weak PIR signals near ground; 315nA ICC preserves multi-year shelf life in unpowered storage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nanopower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV7031DBVR | SOT-23-5 package (2.90mm × 1.60mm); identical electrical specs and pinout (North West configuration) | Larger footprint; better thermal performance (RθJA = 297°C/W vs 279°C/W) but occupies more board area | Select for prototyping or where SOT-23 handling is preferred; not drop-in due to size mismatch |
| TLV7031SDBVR | SC-70-5 package with "South East" pinout (IN+ and VCC swapped); same electrical specs | Requires PCB layout revision; intended for designs needing alternate routing flexibility or legacy compatibility | Choose only if leveraging the SE pinout for specific trace routing; incompatible with DCK footprint |
Compared with TLV7031DBVR and TLV7031SDBVR, the TLV7031DCKR offers the smallest standard footprint (2.00mm × 1.25mm) while retaining identical nanopower performance and push-pull drive - making it optimal for miniaturized, high-volume portable sensors where board space is premium.
Availability
TLV7031DCKR is available at Aetrix Electronics and suitable for gas detection systems, portable audio accessories, smart smoke detectors, and industrial motion sensor nodes requiring stable component supply, long-term lifecycle support, and consistent parametric performance across temperature.
Supply support for TLV7031DCKR 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 delivering analog and embedded processing solutions, with deep expertise in low-power signal conditioning and precision analog ICs.
The TLV703x family was engineered specifically for nanopower, rail-to-rail comparators in battery-operated and space-constrained applications - emphasizing ultra-low ICC, robust noise immunity, and seamless integration with sensors and microcontrollers.
FAQ
What is the operating temperature range for TLV7031DCKR?
The TLV7031DCKR is specified to operate from –40°C to +125°C ambient temperature. This extended range supports deployment in harsh environments such as attic-mounted smoke detectors, outdoor gas sensors, and industrial motor control enclosures where thermal extremes are common. All key parameters - including input offset voltage, propagation delay, and supply current - are guaranteed across this full range.
Does TLV7031DCKR require external hysteresis components?
No, TLV7031DCKR includes internal hysteresis (2–17mV typ) to prevent output oscillation on slow or noisy input signals. This eliminates the need for external positive feedback resistors, reducing BOM count and PCB area - especially valuable in compact designs like earbuds or wearable gas sensors where layout space is constrained.
Can TLV7031DCKR interface directly with a 1.8V microcontroller GPIO?
Yes, TLV7031DCKR's push-pull output drives high to within 350mV of VCC and low to within 250mV of VEE at 3mA load. When powered from 1.8V, VOH ≈ 1.45V and VOL ≈ 0.25V - fully compatible with 1.8V logic thresholds (VIH ≥ 1.17V, VIL ≤ 0.63V). No level shifter is required.
What is the minimum supply voltage for TLV7031DCKR to function correctly?
The absolute minimum supply voltage for functional operation is 1.6V, as defined in Recommended Operating Conditions. Below this, the power-on-reset (POR) circuit holds the output low. The device is also rated for 1.2V minimum supply in "S" and "L" variants (e.g., TLV7031S), but TLV7031DCKR uses the standard "North West" pinout and requires ≥1.6V for normal operation.
How does TLV7031DCKR handle input overdrive conditions?
TLV7031DCKR is designed with no phase reversal under overdriven inputs - meaning the output maintains correct logical polarity even when IN+ or IN− exceeds the rail-to-rail common-mode range (VEE – 0.1V to VCC + 0.1V). This behavior is critical in fault-monitoring applications like smoke detection, where transient overvoltage events must not invert alarm logic.
TLV7031DCKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- Push-Pull
- Voltage - Supply, Single/Dual (±):
- 1.6V ~ 6.5V
- :
- 8mV @ 5V
- Voltage - Input Offset (Max):
- 2pA @ 5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 900nA
- Current - Quiescent (Max):
- 73dB CMRR, 77dB PSRR
- CMRR, PSRR (Typ):
- 3µs (Typ)
- Propagation Delay (Max):
- 7mV
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SC-70-5
TLV7031DCKR FAQ
1.How can I place an order for TLV7031DCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV7031DCKR 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 TLV7031DCKR reliable?
The price and inventory of TLV7031DCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV7031DCKR is usually 5 days.
3.What payment methods are accepted for TLV7031DCKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV7031DCKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV7031DCKR?
TLV7031DCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV7031DCKR 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 TLV7031DCKR?
For technical support, including TLV7031DCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV7031DCKR requirements.
6.How does Aetrix verify that TLV7031DCKR is sourced from the original manufacturer or authorized distributors?
All TLV7031DCKR 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 TLV7031DCKR meets industry standards.
7.What is the process for return or replacement of TLV7031DCKR?
All TLV7031DCKR units undergo pre-shipment inspection (PSI). If there is an issue with TLV7031DCKR, 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 TLV7031DCKR part is unused and in its original packaging.
Return procedure for TLV7031DCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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