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STMicroelectronics TS3021ILT
- Part No.:
- TS3021ILT
- Manufacturer:
- STMicroelectronics
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TS3021ILT.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:19,774
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Product details
Overview
TS3021ILT from STMicroelectronics is a single, rail-to-rail input, push-pull output high-speed comparator optimized for automotive and industrial applications. It delivers 38 ns propagation delay at 2 V supply, consumes only 73 µA quiescent current, operates from 1.8–5 V, and is qualified for -40 °C to 125 °C ambient temperature - enabling use in battery-powered signal conditioning and telecom front-end monitoring circuits.
For engineers reviewing the TS3021ILT datasheet, TS3021ILT pinout, TS3021ILT application, or TS3021ILT equivalent, key selection criteria include micropower operation under wide supply range, rail-to-rail input common-mode range, push-pull output drive capability, automotive-grade temperature performance, and SOT23-5 package compatibility with space-constrained PCB layouts.
Technical Context
The TS3021ILT implements a high-gain, low-offset CMOS input stage with internal hysteresis suppression, enabling clean switching even with slow or noisy input signals. Its push-pull output stage drives loads directly without external pull-up resistors, supporting fast transitions into 10 kΩ loads with 4–9 ns rise/fall times across 2–5 V supplies.
Designed for robust operation in harsh environments, it features 5 kV HBM ESD tolerance, failsafe behavior under overvoltage (±5 V differential input), and guaranteed performance over full automotive temperature range (-40 °C to 125 °C) with input offset drift as low as 3 µV/°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation delay | 38 ns typical at 2 V, 100 mV overdrive - enables sampling decisions within high-speed data acquisition windows. |
| Supply voltage range | 1.8 V to 5 V - supports direct interface with 1.8 V logic, 3.3 V microcontrollers, and 5 V analog subsystems. |
| Quiescent current | 73 µA at 2 V, 25 °C - allows multi-year battery life in portable instrumentation and always-on sensor monitors. |
| Rail-to-rail inputs | Common-mode range extends (VCC−) −0.2 V to (VCC+) +0.2 V - captures full dynamic range of sensors and DAC outputs. |
| Output type | Push-pull CMOS - eliminates need for external pull-up, reduces BOM count, and ensures defined logic levels under load. |
| Temperature range | -40 °C to 125 °C - meets AEC-Q100 Grade 1 requirements for under-hood automotive and industrial control modules. |
| Input offset voltage | 0.5–2 mV (TS3021A grade) - ensures accurate threshold detection in precision level-shifting and window-comparator designs. |
Pinout & Package
SOT23-5 surface-mount package: 2.9 mm × 2.8 mm × 1.3 mm body, gull-wing leads, JEDEC MO-178AC compliant, RoHS-compliant ECOPACK2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 OUT | CMOS push-pull output | Drives high/low actively; sinks up to 40 mA / sources up to 51 mA at 5 V - interfaces directly with FPGA I/O, MCU GPIO, or logic gates. |
| 2 VCC− | Negative supply reference | Ground or negative rail connection; all voltages referenced to this node - enables dual-supply or single-supply operation with split biasing. |
| 3 IN+ | Non-inverting input | High-impedance CMOS node (IIB ≤ 160 nA); accepts rail-to-rail signals - used for reference or signal input in comparator configurations. |
| 4 IN− | Inverting input | Matched to IN+ in offset and bias; supports hysteresis feedback or differential sensing - critical for noise-immune zero-crossing detection. |
| 5 VCC+ | Positive supply | Primary power rail; supplies internal amplifier and output stage - decoupling capacitor required within 1 cm for stable high-speed operation. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power consumption | 73 µA ICC at 2 V - enables integration into energy-harvesting systems and always-on wake-up comparators. |
| High-speed response | 38 ns TPLH/TPHL at 100 mV overdrive - supports >10 MHz signal edge detection in sampling clocks and pulse-width discriminators. |
| Rail-to-rail input range | VICM = (VCC−) −0.2 V to (VCC+) +0.2 V - preserves accuracy when comparing against 0 V or VCC references in single-supply systems. |
| Automotive qualification | AEC-Q100 Grade 1 compliant - validated for reliability in engine control units, ADAS sensor interfaces, and infotainment power sequencing. |
| ESD robustness | 5 kV HBM, 300 V MM - withstands handling and board-level transients without latch-up or parameter shift in production environments. |
Applications
| Telecom Line Interface | Portable Instrumentation |
|---|---|
|
Use Scenario: Detecting ring signal presence and line seizure in VoIP analog front-ends. IC Role / Device Role / Timing Role: High-speed comparator compares AC-coupled ring waveform against programmable DC threshold to trigger interrupt on MCU. Use Value: 38 ns delay ensures sub-100 µs detection latency; rail-to-rail input accommodates ±2.5 V peak ring signals without level-shifting circuitry. |
Use Scenario: Battery voltage monitoring with low-power wake-up in handheld multimeters and oscilloscopes. IC Role / Device Role / Timing Role: Micropower comparator triggers system wake-up when battery drops below 3.0 V threshold. Use Value: 73 µA supply current extends standby time to >1 year; 125 °C rating supports operation near Li-ion battery packs during charging. |
| Automotive Sensor Signal Conditioning | High-Speed Data Acquisition Trigger |
|
Use Scenario: Converting analog crankshaft position sensor output into clean digital timing pulses for ECU ignition control. IC Role / Device Role / Timing Role: Comparator with hysteresis converts sinusoidal VR sensor output into TTL-compatible square wave synchronized to engine rotation. Use Value: 5 kV HBM ESD tolerance survives alternator load-dump transients; -40 °C to 125 °C operation covers full under-hood thermal envelope. |
Use Scenario: Edge-triggered sampling enable in 10 MS/s data loggers capturing transient events like motor startup surges. IC Role / Device Role / Timing Role: Fast comparator detects overvoltage excursion on monitored bus and asserts sample-enable to ADC controller. Use Value: 38 ns propagation delay ensures <100 ns jitter in trigger path; push-pull output drives ADC's EN pin directly without RC delays. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed micropower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TS3022ILT | Dual-channel version in same SOT23-6 package; identical speed (38 ns), supply (1.8–5 V), and current (73 µA) specs per channel. | Used where two independent comparisons are needed (e.g., window comparator, dual-threshold detection) without doubling board area. | Select when space efficiency and channel matching outweigh need for single-channel simplicity. |
| TS3121ILT | Open-drain output instead of push-pull; includes fail-safe inputs (inputs remain functional up to VCC+ 0.3 V); otherwise matches speed and current. | Required where wired-OR logic, level translation, or I²C-compatible bus interfacing is needed - not suitable for direct MCU GPIO drive. | Choose when interoperability with mixed-voltage systems or fault-tolerant input behavior is mandatory. |
Compared with TS3022ILT, TS3021ILT saves board space and simplifies routing in single-threshold applications; compared with TS3121ILT, it eliminates external pull-ups and guarantees defined logic levels - making it optimal for direct microcontroller interface in compact, cost-sensitive designs.
Availability
TS3021ILT is available at Aetrix Electronics and suitable for telecom line interface, portable instrumentation, automotive sensor signal conditioning, and high-speed data acquisition trigger applications requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for TS3021ILT 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing silicon solutions for automotive, industrial, and consumer markets since 1987.
The TS3021 series belongs to ST's precision analog comparators product line, engineered specifically for high-speed, low-power decision-making in automotive-grade and portable electronics where timing accuracy and energy efficiency are critical.
FAQ
What is the maximum operating supply voltage for TS3021ILT?
The absolute maximum supply voltage (VCC = VCC+ − VCC−) is 5.5 V. Continuous operation above 5 V risks permanent damage. The recommended operating range is 1.8 V to 5 V, with full specification compliance guaranteed across this range at temperatures from −40 °C to 125 °C.
Does TS3021ILT support dual-supply operation?
Yes. Pin 2 (VCC−) serves as the negative supply reference and can be connected to a negative rail (e.g., −2.5 V) while Pin 5 (VCC+) connects to ground or positive rail. Input common-mode range extends 0.2 V beyond each rail, enabling true dual-supply functionality with rail-to-rail input swing.
Can TS3021ILT drive an LED directly?
No. While its push-pull output can sink up to 40 mA at 5 V, driving an LED requires current limiting and forward voltage consideration. At 3.3 V supply, VOL is 40–80 mV at 1 mA sink, but LED forward voltage typically exceeds 1.8 V - a series resistor must be used to limit current and avoid violating output voltage specifications.
Is there a lead-free and RoHS-compliant version of TS3021ILT?
Yes. TS3021ILT is manufactured in ST's ECOPACK2-compliant SOT23-5 package, meeting RoHS Directive 2011/65/EU and REACH SVHC requirements. The device carries no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE substances above threshold limits, and is marked "RoHS" on reel packaging.
TS3021ILT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- Push-Pull
- Voltage - Supply, Single/Dual (±):
- 1.8V ~ 5V
- :
- 6mV @ 5V
- Voltage - Input Offset (Max):
- 0.16µA @ 5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 90µA
- Current - Quiescent (Max):
- 79dB CMRR
- CMRR, PSRR (Typ):
- 105ns
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SOT-23-5
TS3021ILT FAQ
1.How can I place an order for TS3021ILT through Aetrix?
Please submit a Request for Quotation (RFQ) for TS3021ILT 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 TS3021ILT reliable?
The price and inventory of TS3021ILT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS3021ILT is usually 5 days.
3.What payment methods are accepted for TS3021ILT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS3021ILT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS3021ILT?
TS3021ILT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS3021ILT 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 TS3021ILT?
For technical support, including TS3021ILT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS3021ILT requirements.
6.How does Aetrix verify that TS3021ILT is sourced from the original manufacturer or authorized distributors?
All TS3021ILT 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 TS3021ILT meets industry standards.
7.What is the process for return or replacement of TS3021ILT?
All TS3021ILT units undergo pre-shipment inspection (PSI). If there is an issue with TS3021ILT, 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 TS3021ILT part is unused and in its original packaging.
Return procedure for TS3021ILT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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