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Texas Instruments TLV7021DCKT
- Part No.:
- TLV7021DCKT
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TLV7021DCKT.pdf
- Description:
- IC COMPARATOR 1 SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:11,743
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Product details
Overview
TLV7021DCKT from Texas Instruments is a single-channel, open-drain output micropower comparator in 5-pin SC70 package, operating from 1.6 V to 6.5 V supply, consuming only 5 µA quiescent current, with 260 ns propagation delay (tPHL), rail-to-rail input range extending 100 mV beyond VCC, and internal hysteresis - used for precision threshold detection in battery-powered IR receivers and level translation circuits.
For engineers reviewing the TLV7021DCKT datasheet, TLV7021DCKT pinout, TLV7021DCKT application, or TLV7021DCKT equivalent, key selection criteria include open-drain output compatibility with pull-up voltages beyond VCC, fault-tolerant inputs (0–5.5 V independent of VCC), no phase reversal under overdrive, –40°C to 125°C operation, and SC70 footprint suitability for space-constrained portable designs.
Technical Context
The TLV7021DCKT implements a rail-to-rail input stage supporting common-mode voltages from VEE to VCC + 0.1 V, with differential input tolerance up to ±5.5 V regardless of supply state. Its open-drain output enables bidirectional level shifting between domains (e.g., 1.8 V logic sensing 3.3 V signal), while internal hysteresis (1.2–14 mV) suppresses noise-induced oscillation on slow-moving inputs.
Power-on-reset (POR) holds the output in high-impedance state during VCC ramp-up until ≥1.6 V is reached, ensuring glitch-free startup. The device maintains 5 pA input bias current and ±8 mV max input offset voltage across temperature, enabling stable DC-coupled monitoring in low-power sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6 V to 6.5 V - supports direct interface with 1.8 V, 3.3 V, and 5 V systems without level-shifting circuitry. |
| Quiescent Current | 5 µA - enables multi-year battery life in always-on wake-up comparators for IoT sensors and wearables. |
| Propagation Delay | 260 ns (tPHL, 100 mV overdrive) - provides fast fault response while maintaining micropower operation. |
| Input Offset Voltage | ±0.5 mV (typ), ±8 mV (max) - ensures accurate threshold detection down to sub-millivolt windows in precision monitors. |
| Input Common-Mode Range | VEE to VCC + 0.1 V - allows sensing signals exceeding supply rails, critical for industrial analog front-ends. |
| Output Type | Open-drain - permits flexible pull-up to higher voltage domains (e.g., 5 V pull-up with 1.8 V VCC), enabling bipolar-to-single-ended conversion. |
| Hysteresis | 1.2–14 mV (adjustable via external feedback) - eliminates chatter on noisy or slowly varying inputs like thermistor outputs. |
Pinout & Package
TLV7021DCKT is packaged in a 5-pin SC70 (DCK) package measuring 2.00 mm × 1.25 mm × 0.9 mm, optimized for high-density PCB layouts in portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Open-drain output | Drives low when IN+ > IN−; requires external pull-up; floats high otherwise - enables wired-OR logic and multi-voltage domain interfacing. |
| 2 (VEE) | Negative supply / ground | Reference node for input common-mode and output low-state; must be connected to system ground or lowest potential rail. |
| 3 (IN+) | Noninverting input | Positive reference input; accepts voltages up to VCC + 0.1 V; fault-tolerant to 5.5 V even with unpowered VCC. |
| 4 (IN−) | Inverting input | Negative reference input; same fault tolerance and common-mode range as IN+; differential input voltage limited to ±5.5 V. |
| 5 (VCC) | Positive supply | Primary power rail (1.6–6.5 V); powers internal biasing and POR circuit; output high-impedance state active until VCC ≥ 1.6 V. |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal on overdriven inputs | Guarantees correct output polarity even when IN+ or IN− exceeds VCC or drops below VEE - essential for robust fault detection in automotive and industrial sensors. |
| Fault-tolerant inputs (0–5.5 V) | Allows safe connection of external signals before VCC is applied - simplifies power sequencing in multi-rail systems and prevents latch-up during hot-plug events. |
| Internal hysteresis | Reduces need for external positive feedback components; stabilizes output against noise on slow edges (e.g., thermistor or LDR-based thresholds). |
| Power-on-reset (POR) | Prevents undefined output states during power ramp-up by holding OUT in high-Z until VCC reaches 1.6 V - eliminates spurious interrupts in microcontroller wake-up circuits. |
| Rail-to-rail input with 100 mV beyond VCC | Enables direct sensing of signals at or slightly above supply rail - useful for battery voltage monitoring near end-of-life where VBAT ≈ VCC. |
Applications
| IR Receiver Analog Front End | Low-Power Battery Monitor |
|---|---|
Use Scenario: Detecting modulated IR carrier bursts in remote control receivers with minimal power draw between pulses. IC Role / Device Role / Timing Role: Comparator acts as zero-crossing detector and amplitude discriminator, converting analog photodiode output into clean digital pulses. Use Value: 5 µA quiescent current extends standby battery life; 260 ns delay ensures accurate pulse timing; open-drain output interfaces directly with 3.3 V MCU GPIO. |
Use Scenario: Monitoring lithium-ion cell voltage to trigger low-battery warning before cutoff. IC Role / Device Role / Timing Role: Precision threshold detector comparing cell voltage against stable reference (e.g., TLV431), generating interrupt on crossing. Use Value: ±0.5 mV typical offset enables <10 mV detection window; rail-to-rail input senses down to 2.5 V; fault-tolerant inputs survive deep discharge transients. |
| Level Translator (1.8 V ↔ 3.3 V) | Window Comparator Input Stage |
Use Scenario: Converting 1.8 V logic signals to 3.3 V domain in mixed-voltage SoC interfaces. IC Role / Device Role / Timing Role: Open-drain comparator with 3.3 V pull-up translates low-voltage swing into full 3.3 V logic levels. Use Value: Input operates at 1.8 V VCC while output swings to 3.3 V - eliminates need for dedicated level-shifter ICs and saves board space. |
Use Scenario: Providing hysteresis-stabilized upper/lower bounds for analog sensor output (e.g., pressure transducer). IC Role / Device Role / Timing Role: Single TLV7021DCKT used in conjunction with resistive divider and reference to define window edges with built-in noise immunity. Use Value: Internal hysteresis (1.2–14 mV) prevents chatter on slow-moving sensor outputs; 125°C rating supports under-hood automotive use. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV7021DBVR | Same electrical specs; X2SON (0.8 × 0.8 mm²) package - 75% smaller footprint than SC70, but requires advanced reflow and inspection. | Better suited for ultra-compact wearables or hearing aids where board area is constrained; less suitable for manual prototyping or wave soldering. | Select TLV7021DBVR when PCB real estate is premium and assembly process supports 0.4 mm pitch leadless packages. |
| LMV7215MF/NOPB | Higher supply current (32 µA), faster propagation (120 ns), push-pull output - no external pull-up needed, but cannot float high or interface across voltage domains. | Preferred for high-speed, single-supply logic-level comparison where power budget allows; unsuitable for level translation or multi-rail interfacing. | Choose LMV7215MF/NOPB when speed outweighs power savings and output must drive capacitive loads directly without pull-up resistors. |
Compared with TLV7021DCKT, TLV7021DBVR offers identical functionality in a smaller package for space-critical designs, while LMV7215MF/NOPB trades micropower operation for higher speed and push-pull drive - making TLV7021DCKT optimal for battery longevity and flexible voltage-domain interfacing.
Availability
TLV7021DCKT is available at Aetrix Electronics and suitable for mobile phones, IR receivers, and portable medical devices requiring stable component supply across long product lifecycles and seasonal demand spikes.
Supply support for TLV7021DCKT 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 chain and low-power design.
The TLV7021DCKT belongs to TI's TLV70xx micropower comparator family, engineered specifically for energy-constrained, space-sensitive applications such as smartphones, wearables, and battery-backed industrial sensors.
FAQ
What is the maximum input voltage the TLV7021DCKT can tolerate when VCC is unpowered?
The TLV7021DCKT features fault-tolerant inputs rated for 0 V to 5.5 V regardless of VCC state. This means IN+ and IN− can safely accept signals up to 5.5 V even with VCC = 0 V - a critical capability for hot-swap interfaces and power-sequenced systems. This specification is verified per TI's SLVSDM5F datasheet Section 6.1 and 7.4.1.
Does the TLV7021DCKT require external hysteresis, or is it built-in?
The TLV7021DCKT includes internal hysteresis (1.2–14 mV, depending on supply and temperature), eliminating the need for external positive feedback resistors in most noise-immune threshold detection applications. External hysteresis can still be added for tighter control, but the internal hysteresis ensures reliable operation out-of-the-box - confirmed in Section 7.3 and Table 6.8 of the TLV7021DCKT datasheet.
Can the TLV7021DCKT be used as a level translator between 1.8 V and 5 V logic domains?
Yes - the TLV7021DCKT's open-drain output and fault-tolerant inputs make it ideal for bidirectional level translation. With VCC = 1.8 V and a 5 V pull-up on OUT, it can sense 5 V input signals and output 5 V logic levels. This configuration is explicitly supported in TI's Application Note SBAA341 and validated in the TLV7021DCKT's recommended operating conditions (Section 6.4).
What is the power-on behavior of the TLV7021DCKT output?
During power-up, the TLV7021DCKT's integrated Power-on-Reset (POR) circuit holds the open-drain output in high-impedance state until VCC reaches ≥1.6 V. This prevents false triggering or bus contention in microcontroller wake-up circuits. Once VCC stabilizes, the output responds dynamically to input differentials - detailed in Section 7.4 and Figure 1 of the TLV7021DCKT datasheet.
Is the TLV7021DCKT pin-compatible with other comparators in the TLV70xx family?
The TLV7021DCKT shares identical 5-pin SC70 pinout with TLV7011DCKT (push-pull variant), allowing direct substitution where open-drain functionality is not required. However, TLV7021DCKT is not pin-compatible with dual-channel variants (e.g., TLV7022) or different packages (X2SON, SOT-23). Pin mapping is confirmed in Section 5 (Pin Configuration) of SLVSDM5F.
TLV7021DCKT 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:
- -
- Number of Elements:
- 1
- Output Type:
- Open-Drain
- Voltage - Supply, Single/Dual (±):
- 1.6V ~ 5.5V
- :
- 8mV
- Voltage - Input Offset (Max):
- 5pA
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 10µA
- Current - Quiescent (Max):
- 78dB CMRR, 78dB PSRR
- CMRR, PSRR (Typ):
- 350ns
- Propagation Delay (Max):
- 4.2mV
- Hysteresis:
- -40°C ~ 125°C (TA)
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SC-70-5
TLV7021DCKT FAQ
1.How can I place an order for TLV7021DCKT through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV7021DCKT 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 TLV7021DCKT reliable?
The price and inventory of TLV7021DCKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV7021DCKT is usually 5 days.
3.What payment methods are accepted for TLV7021DCKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV7021DCKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV7021DCKT?
TLV7021DCKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV7021DCKT 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 TLV7021DCKT?
For technical support, including TLV7021DCKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV7021DCKT requirements.
6.How does Aetrix verify that TLV7021DCKT is sourced from the original manufacturer or authorized distributors?
All TLV7021DCKT 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 TLV7021DCKT meets industry standards.
7.What is the process for return or replacement of TLV7021DCKT?
All TLV7021DCKT units undergo pre-shipment inspection (PSI). If there is an issue with TLV7021DCKT, 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 TLV7021DCKT part is unused and in its original packaging.
Return procedure for TLV7021DCKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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