My Inquiry
My Account
Texas Instruments TLV7021DCKR
- Part No.:
- TLV7021DCKR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TLV7021DCKR.pdf
- Description:
- IC COMPARATOR 1 SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,787
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLV7021DCKR from Texas Instruments is a single-channel, micropower open-drain comparator with rail-to-rail input capability, 5 µA quiescent current, 260 ns propagation delay (tPHL), and operation from 1.6 V to 6.5 V supply. It delivers precision threshold detection in battery-powered IR receivers and level translators where low power and noise immunity are critical.
For engineers reviewing the TLV7021DCKR datasheet, TLV7021DCKR pinout, TLV7021DCKR application, or TLV7021DCKR equivalent, this page provides verified functional context, package-specific terminal mapping, real-world use cases, and validated alternative options for portable and industrial voltage monitoring designs.
Technical Context
The TLV7021DCKR implements a rail-to-rail input stage tolerant up to 100 mV beyond VCC and features internal hysteresis (1.2–14 mV) to suppress noise-induced output oscillation. Its open-drain output supports pull-up voltages beyond VCC-enabling bipolar-to-single-ended conversion and flexible logic-level interfacing.
It includes a Power-on-Reset (POR) circuit that places the output in high-impedance state during supply ramp-up or ramp-down, preventing undefined logic states. Input fault tolerance extends to 5.5 V independent of VCC, allowing safe pre-power-up signal presence.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6 V to 6.5 V - enables direct compatibility with 1.8 V, 3.3 V, and 5 V systems without level-shifting. |
| Quiescent Current | 5 µA - supports multi-year battery life in always-on sensing nodes and wearable devices. |
| Propagation Delay | 260 ns (tPHL, VOD = 100 mV) - ensures fast response to overvoltage/undervoltage faults while maintaining micropower operation. |
| Input Offset Voltage | ±0.5 mV (min), ±8 mV (max) - enables accurate threshold detection at sub-10 mV levels across temperature. |
| Hysteresis | 1.2–14 mV - suppresses chatter on slow-moving or noisy input signals without external components. |
| Common-Mode Range | VEE to VCC + 0.1 V - supports inputs exceeding VCC by 100 mV, simplifying sensor interface design. |
| ESD Rating | ±2000 V HBM - meets industrial handling requirements without additional protection circuitry. |
Pinout & Package
TLV7021DCKR is packaged in a 5-pin SC70 (DCK) package measuring 2.00 mm × 1.25 mm, optimized for space-constrained PCB layouts in portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Open-drain output | Requires external pull-up; supports voltage translation up to 6 V regardless of VCC. |
| 2 (VEE) | Negative supply / ground reference | Typically connected to GND in single-supply configurations; defines lower rail for common-mode range. |
| 3 (IN+) | Noninverting input | Accepts signals from VEE to VCC + 0.1 V; no phase reversal when overdriven. |
| 4 (IN−) | Inverting input | Same rail-to-rail range as IN+; differential input voltage (VID) must stay within absolute max ratings. |
| 5 (VCC) | Positive supply | Supplies internal bias; powers POR circuit and output stage; minimum 1.6 V required for functional operation. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input with overdrive tolerance | Inputs operate from VEE to VCC + 0.1 V and tolerate up to 5.5 V regardless of VCC - eliminates need for external clamping in mixed-voltage systems. |
| Internal hysteresis | 1.2–14 mV programmable via supply and temperature - prevents false triggering on noisy thresholds without external resistors. |
| Power-on-reset (POR) behavior | Output remains high-impedance during VCC ramp-up/down - avoids spurious logic transitions in power-critical sequencing. |
| Ultra-low quiescent current | 5 µA typical at 1.8 V - enables continuous monitoring in energy-harvesting and coin-cell applications. |
| Wide temperature range | –40°C to +125°C operation - qualified for automotive cabin, industrial control, and outdoor IoT deployments. |
Applications
| IR Receiver Front End | Low-Voltage Threshold Detector |
|---|---|
Use Scenario: Demodulating weak, noisy 38 kHz IR carrier signals in remote control receivers. IC Role / Device Role / Timing Role: Comparator converts analog IR envelope into clean digital pulse train; hysteresis rejects ambient light noise. Use Value: 260 ns propagation delay ensures accurate pulse timing; 5 µA current minimizes standby drain on AAA batteries. |
Use Scenario: Monitoring Li-ion cell voltage during charging to trigger cutoff at 4.2 V ±10 mV. IC Role / Device Role / Timing Role: Precision comparator compares cell voltage against reference; rail-to-rail input accommodates full 0–4.2 V range. Use Value: ±0.5 mV offset enables <10 mV total error; internal hysteresis prevents oscillation near trip point. |
| Level Translator (Bipolar → Single-Ended) | Zero-Crossing Detector |
Use Scenario: Converting ±5 V op-amp output to 3.3 V logic-compatible signal for MCU GPIO. IC Role / Device Role / Timing Role: Open-drain output pulled to 3.3 V accepts input up to 5.5 V - isolates voltage domains without external FETs. Use Value: Fault-tolerant inputs eliminate need for series resistors; 1.6 V min supply allows use with ultra-low-power MCUs. |
Use Scenario: Detecting AC line zero-crossings in smart plug energy metering circuits. IC Role / Device Role / Timing Role: Compares AC waveform against 0 V reference; internal hysteresis rejects EMI-induced glitches near crossing point. Use Value: 125°C rating supports enclosed thermal environments; 5 µA draw reduces self-heating impact on accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV7021DBVR | X2SON-5 (0.8 × 0.8 mm²) package; identical electrical specs and pinout; 497.5°C/W RθJA vs. 278.8°C/W for DCK. | Better suited for ultra-dense layouts where board area < 0.64 mm² is mandatory; higher thermal resistance requires careful power budgeting. | Select TLV7021DBVR only when footprint reduction outweighs thermal derating needs. |
| LMV7215MF/NOPB | Push-pull output (not open-drain); 120 ns propagation delay; 85 µA IQ; SOT-23-5 package; no internal hysteresis. | Requires external hysteresis resistor network; faster but draws 17× more current; unsuitable for battery lifetime-critical designs. | Choose LMV7215MF/NOPB only when push-pull drive and speed >260 ns are prioritized over power and integration. |
Compared with TLV7021DCKR, TLV7021DBVR offers identical functionality in a smaller footprint but with reduced thermal performance, while LMV7215MF/NOPB trades micropower operation and integrated hysteresis for raw speed and push-pull drive - making TLV7021DCKR optimal for space- and energy-constrained threshold detection.
Availability
TLV7021DCKR is available at Aetrix Electronics and suitable for IR receivers, battery voltage monitors, level translators, and zero-crossing detectors requiring stable component supply across automotive, industrial, and consumer production programs.
Supply support for TLV7021DCKR 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 TLV7021DCKR belongs to TI's TLV702x micropower comparator family, engineered specifically for space- and energy-constrained applications such as portable medical devices, wearables, and battery-backed industrial sensors.
FAQ
What is the output configuration of TLV7021DCKR?
The TLV7021DCKR features an open-drain output stage. This means the output transistor can only sink current to VEE (typically ground); a pull-up resistor to a defined voltage rail (e.g., 3.3 V or 5 V) is required to generate a logic-high level. This architecture enables level translation beyond VCC and wired-OR logic configurations - a key differentiator from push-pull comparators like the TLV7011.
Does TLV7021DCKR require external hysteresis resistors?
No. TLV7021DCKR integrates internal hysteresis ranging from 1.2 mV to 14 mV depending on supply voltage and temperature. This eliminates the need for external positive feedback resistors in most threshold-detection applications, reducing component count and PCB area - especially valuable in compact designs using the SC70 package.
Can TLV7021DCKR operate from a 1.8 V supply?
Yes. TLV7021DCKR is fully specified from 1.6 V to 6.5 V supply voltage. At 1.8 V, it maintains 5 µA quiescent current, 260 ns propagation delay, and rail-to-rail input operation - making it ideal for modern ultra-low-voltage microcontrollers and energy-harvesting systems where supply rails fall below 2.0 V.
What is the maximum input voltage allowed on IN+ or IN− pins of TLV7021DCKR?
The absolute maximum input voltage on IN+ or IN− is VEE – 0.3 V to 6 V, independent of VCC. Crucially, the device is fault-tolerant up to 5.5 V - meaning inputs may safely remain active (e.g., connected to a 5 V sensor) even when VCC is unpowered or ramping, preserving system robustness during power sequencing.
How does the Power-on-Reset (POR) function behave in TLV7021DCKR?
During VCC ramp-up or ramp-down, TLV7021DCKR's POR circuit forces the open-drain output into a high-impedance (Hi-Z) state - not logic-high or logic-low. This prevents undefined or glitchy signals from propagating to downstream logic until VCC stabilizes above 1.6 V, ensuring reliable startup in sequenced power systems.
TLV7021DCKR 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
TLV7021DCKR FAQ
1.How can I place an order for TLV7021DCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV7021DCKR 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 TLV7021DCKR reliable?
The price and inventory of TLV7021DCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV7021DCKR is usually 5 days.
3.What payment methods are accepted for TLV7021DCKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV7021DCKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV7021DCKR?
TLV7021DCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV7021DCKR 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 TLV7021DCKR?
For technical support, including TLV7021DCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV7021DCKR requirements.
6.How does Aetrix verify that TLV7021DCKR is sourced from the original manufacturer or authorized distributors?
All TLV7021DCKR 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 TLV7021DCKR meets industry standards.
7.What is the process for return or replacement of TLV7021DCKR?
All TLV7021DCKR units undergo pre-shipment inspection (PSI). If there is an issue with TLV7021DCKR, 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 TLV7021DCKR part is unused and in its original packaging.
Return procedure for TLV7021DCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLV7021DCKR Tags
-
LM2903DR
Texas Instruments
-
LM339DR
Texas Instruments
-
LM339PWR
Texas Instruments
-
LM393DT
STMicroelectronics
-
LM2901PWR
Texas Instruments
-
LM2903DT
STMicroelectronics
-
LM393DR
Texas Instruments
-
LM239DR
Texas Instruments
-
LM339APWR
Texas Instruments
-
LM2903P
Texas Instruments
-
LM393ADR
Texas Instruments
-
NCX2200GMAZ
NXP Semiconductors
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
