My Inquiry
My Account
Texas Instruments TLV3231DCKR
- Part No.:
- TLV3231DCKR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TLV3231DCKR.pdf
- Description:
- 20NS SINGLE-CHANNEL COMPARATOR W
- Quantity:
- Payment:
- Shipping:
Inventory:275
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLV3231DCKR from Texas Instruments is a single-channel, rail-to-rail input high-speed comparator with push-pull output, 20ns propagation delay, ±4mV max input offset voltage, and 200µA per channel supply current. It operates from 2.7V to 5.5V and supports –40°C to +125°C ambient temperature - ideal for low-power, fast-response current sensing in battery-powered portable electronics.
For engineers reviewing the TLV3231DCKR datasheet, TLV3231DCKR pinout, TLV3231DCKR application, or TLV3231DCKR equivalent, key selection criteria include propagation delay vs. supply current trade-off, internal hysteresis (1.55mV), rail-to-rail input range extending 100mV beyond rails, push-pull output drive capability, and SC-70 package compatibility with space-constrained PCB layouts.
Technical Context
The TLV3231DCKR implements a high-gain, low-offset comparator core with integrated ESD clamps on both inputs and push-pull output stage capable of sourcing/sinking ≥2mA. Its internal hysteresis (1.55mV typ) stabilizes switching near threshold without external feedback, while rail-to-rail input operation enables direct interfacing with low-voltage references or shunt-based current signals.
No power-on reset circuit is present - unlike the dual-channel TLV3232 - confirming TLV3231DCKR is optimized for single-channel deterministic timing applications where startup behavior is managed externally. Input common-mode range extends from (V−) −0.1V to (V+) +0.1V, and output swing is within 200mV of either rail under 2mA load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation delay | 20ns typ at 50mV overdrive - enables detection of sub-50ns transients in motor control or power sequencing. |
| Input offset voltage | ±4mV max over full temperature range - ensures ≤4mV trip-point error in precision zero-cross or threshold-detection circuits. |
| Supply current per channel | 200µA typ at 2.7–5V - supports always-on monitoring in energy-sensitive IoT sensors and wearables. |
| Rail-to-rail input range | Extends 100mV beyond V−/V+ - allows direct connection to 0V-referenced shunt resistors or 3.3V logic without level-shifting. |
| Output type | Push-pull - eliminates need for external pull-up resistor; drives MOSFET gates or LEDs directly with 2mA sink/source capability. |
| Operating temperature | –40°C to +125°C - qualified for automotive cabin modules, industrial PLC I/O, and outdoor metering equipment. |
| Hysteresis | 1.55mV typ - suppresses noise-induced chatter on slowly varying inputs like thermistor or potentiometer outputs. |
Pinout & Package
TLV3231DCKR is packaged in SC-70 (DCK), a 5-pin leaded surface-mount package measuring 1.25mm × 2.00mm. The package supports reflow soldering and provides mechanical robustness for high-volume automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pin 1) | Output | CMOS-compatible push-pull output; sinks/sours ≥2mA; must not be tied to other outputs or supply rails. |
| V− (Pin 2) | Negative supply | Ground reference or negative rail; all internal bias and ESD clamps referenced to this node. |
| IN+ (Pin 3) | Non-inverting input | Differential input with rail-to-rail common-mode range; internally clamped ±0.3V beyond V−/V+. |
| IN− (Pin 4) | Inverting input | Differential input matching IN+; same ESD protection and voltage range; used for threshold comparison. |
| V+ (Pin 5) | Positive supply | Primary power rail (2.7–5.5V); powers internal amplifier, output stage, and bias networks. |
Key Features
| Feature | Design Value |
|---|---|
| 20ns propagation delay with 200µA supply current | Delivers high-speed response without compromising battery life - critical for real-time fault detection in portable power tools. |
| Rail-to-rail input with 100mV beyond-rail capability | Enables direct interface with grounded shunts or 0V-referenced analog sources without external op-amp buffers. |
| 1.55mV internal hysteresis | Reduces sensitivity to EMI and thermal noise in motor commutation or smoke detector analog front-ends. |
| Push-pull output stage | Drives capacitive loads up to 15pF with 1.6ns rise/fall time; eliminates BOM cost and board area of external pull-up resistors. |
| ESD protection (HBM ±2kV, CDM ±1kV) | Withstands handling and system-level ESD events per IEC 61000-4-2 Level 2 - suitable for consumer device final assembly. |
Applications
| Low-Side Current Sensing | Zero-Cross Detection |
|---|---|
Use Scenario: Monitoring battery discharge current in wireless earbuds using a 10mΩ shunt between load and ground. IC Role / Device Role / Timing Role: TLV3231DCKR compares shunt voltage against a precision reference to trigger overcurrent shutdown within 20ns. Use Value: Enables fast, accurate current limiting without adding op-amp gain stages - reducing component count and quiescent power. | Use Scenario: Detecting AC line zero crossings in compact smart-plug controllers with TRIAC gate drive. IC Role / Device Role / Timing Role: TLV3231DCKR compares rectified AC signal to ground reference, generating clean digital edges synchronized to mains frequency. Use Value: Achieves <100ns timing jitter across temperature, enabling precise phase-angle control for dimming and motor speed regulation. |
| Gas Detector Threshold Alert | Portable Motion Sensor Wake-Up |
Use Scenario: Interfacing electrochemical gas sensor output to MCU ADC, triggering alarm when CO concentration exceeds 50ppm. IC Role / Device Role / Timing Role: TLV3231DCKR acts as analog window comparator front-end, asserting interrupt when sensor voltage crosses preset thresholds. Use Value: Internal hysteresis prevents false alarms from sensor drift or RF pickup; 200µA supply enables multi-year battery operation. | Use Scenario: Coupling PIR sensor output to ultra-low-power MCU in asset-tracking tags, waking only on valid motion events. IC Role / Device Role / Timing Role: TLV3231DCKR conditions weak, noisy PIR signal and generates clean wake-up pulse to MCU's external interrupt pin. Use Value: Rail-to-rail input accepts microvolt-level sensor outputs; push-pull output directly drives MCU GPIO without level translation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV7215M5X/NOPB | 25ns propagation delay, 1.2mV hysteresis, 1.8–5.5V supply, SOT-23-5 package | Lacks rail-to-rail input; input range limited to V− +0.2V to V+ −0.2V | Select when lower hysteresis and wider supply range are prioritized over input voltage flexibility. |
| TLV3501CDBVR | 4.5ns propagation delay, 2.5mA supply current, 2.7–5.5V, SOT-23-6 package | Higher speed but 12.5× higher quiescent current; no internal hysteresis | Select when nanosecond response is mandatory and power budget allows >2mA per channel. |
Compared with LMV7215M5X/NOPB and TLV3501CDBVR, TLV3231DCKR uniquely balances 20ns speed, 200µA power, rail-to-rail input, and built-in hysteresis - making it optimal for space- and energy-constrained portable systems requiring reliable, low-jitter threshold detection.
Availability
TLV3231DCKR is available at Aetrix Electronics and suitable for low-power portable electronics, industrial sensor nodes, and automotive cabin modules requiring stable component supply, long-term lifecycle support, and consistent parametric performance across temperature extremes.
Supply support for TLV3231DCKR 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, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.
The TLV323x family was designed specifically for high-speed, low-power threshold detection in battery-operated and thermally demanding applications - emphasizing propagation delay vs. quiescent current optimization and robust input/output staging.
FAQ
What is the maximum overdrive voltage specification for TLV3231DCKR?
The TLV3231DCKR does not define a maximum overdrive voltage. Its absolute maximum differential input voltage is ±6V (per datasheet Section 5.1), and input pins are diode-clamped to V− and V+. For reliable operation, input signals should remain within (V−) −0.5V to (V+) +0.5V, with transient currents limited to ≤10mA using series resistance if exceeding rail limits. TLV3231DCKR maintains specified 20ns propagation delay at 50mV overdrive.
Does TLV3231DCKR include a power-on reset (POR) function?
No, TLV3231DCKR does not include an internal power-on reset circuit. The POR feature is exclusive to the dual-channel TLV3232 variant. TLV3231DCKR outputs respond immediately to input conditions once supply rails stabilize above minimum operating voltage (2.7V). System-level POR must be implemented externally if deterministic startup state is required. TLV3231DCKR remains fully functional across its entire –40°C to +125°C range without POR dependency.
Can TLV3231DCKR drive a 10kΩ pull-up load directly?
No - TLV3231DCKR features a push-pull output and does not require or support external pull-up resistors. Its output actively drives high (to within 200mV of V+) and low (to within 200mV of V−) with ≥2mA sourcing/sinking capability. Connecting a 10kΩ pull-up would create contention, increase power dissipation, and risk violating absolute maximum ratings. TLV3231DCKR is designed for direct interface with MCU GPIOs, MOSFET gates, or LED anodes/cathodes without passive termination.
What is the input bias current of TLV3231DCKR over temperature?
TLV3231DCKR exhibits input bias current of 0.01nA to 10nA over –40°C to +125°C (Section 5.6, IB parameter). At 25°C and 5V supply, typical bias current is <1pA. This ultra-low bias enables high-impedance sensor interfaces - such as thermistors or photodiodes - without significant voltage error. TLV3231DCKR maintains sub-10nA bias across full temperature range, supporting precision measurement in automotive and industrial environments.
Is TLV3231DCKR pin-compatible with other comparators in SC-70-5 package?
TLV3231DCKR follows the standard "North West" SC-70-5 pinout (IN−, V−, IN+, OUT, V+), matching industry conventions for single-channel comparators in this footprint. However, pin compatibility does not guarantee functional equivalence: voltage ranges, propagation delay, hysteresis, and output structure differ across vendors. Substituting TLV3231DCKR requires validation of input common-mode range, output drive strength, and timing behavior. TLV3231DCKR's rail-to-rail input and 1.55mV hysteresis are not replicated in most generic SC-70-5 comparators.
TLV3231DCKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Series:
- TLV323x
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- Push-Pull, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 5.5V
- :
- 4mV @ 5V
- Voltage - Input Offset (Max):
- 0.001µA @ 5V
- Current - Input Bias (Max):
- 45mA @ 5V
- Current - Output (Typ):
- 250µA
- Current - Quiescent (Max):
- 82dB CMRR, 92dB PSRR
- CMRR, PSRR (Typ):
- 25ns
- Propagation Delay (Max):
- 3mV
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SC-70-5
TLV3231DCKR FAQ
1.How can I place an order for TLV3231DCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV3231DCKR 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 TLV3231DCKR reliable?
The price and inventory of TLV3231DCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV3231DCKR is usually 5 days.
3.What payment methods are accepted for TLV3231DCKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV3231DCKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV3231DCKR?
TLV3231DCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV3231DCKR 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 TLV3231DCKR?
For technical support, including TLV3231DCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV3231DCKR requirements.
6.How does Aetrix verify that TLV3231DCKR is sourced from the original manufacturer or authorized distributors?
All TLV3231DCKR 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 TLV3231DCKR meets industry standards.
7.What is the process for return or replacement of TLV3231DCKR?
All TLV3231DCKR units undergo pre-shipment inspection (PSI). If there is an issue with TLV3231DCKR, 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 TLV3231DCKR part is unused and in its original packaging.
Return procedure for TLV3231DCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLV3231DCKR 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…
