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STMicroelectronics TS3021HIYLT
- Part No.:
- TS3021HIYLT
- Manufacturer:
- STMicroelectronics
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TS3021HIYLT.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:6,148
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Product details
Overview
TS3021HIYLT from STMicroelectronics is an automotive-qualified, single-channel, rail-to-rail input high-speed comparator with 38 ns propagation delay, 73 µA supply current at 2 V, and operation from 1.8 V to 5 V supply. It features push-pull output, AEC-Q100/Q003 qualification, and operates across -40 °C to 150 °C for engine control unit voltage monitoring.
For engineers reviewing the TS3021HIYLT datasheet, TS3021HIYLT pinout, TS3021HIYLT application, or TS3021HIYLT equivalent, this device supports high-speed sampling systems, automotive sensor signal conditioning, telecom threshold detection, and portable communication power sequencing where low quiescent current and extended temperature stability are critical.
Technical Context
The TS3021HIYLT implements a CMOS input stage enabling rail-to-rail common-mode input range (VCC− to VCC+ over full temperature), with push-pull output driving directly into logic or analog loads without external pull-ups. Its propagation delay remains stable across 1.8–5 V supply and exhibits <120 ns worst-case (−40 °C to 150 °C) under 100 mV overdrive.
Input offset voltage is specified at 0.5–7 mV over temperature, with drift ≤20 µV/°C; supply current increases only marginally with supply voltage (73–95 µA typ. from 2 V to 5 V), confirming true micropower high-speed operation. ESD tolerance (5 kV HBM) and latch-up immunity (200 mA) meet automotive robustness requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation delay | 38 ns typical (100 mV overdrive, 2 V supply, 25 °C); enables >10 MHz sampling decision timing |
| Supply current | 73 µA typical at 2 V, no load, 25 °C; supports battery-powered automotive modules |
| Supply voltage range | 1.8 V to 5 V; interoperable with 1.8 V logic, 3.3 V microcontrollers, and 5 V legacy systems |
| Operating temperature | −40 °C to +150 °C; qualified for under-hood automotive applications including transmission and engine control |
| Input offset voltage | 0.5–7 mV over −40 °C to 150 °C; ensures accurate threshold detection in sensor interfaces |
| Output type | Push-pull; eliminates need for external pull-up resistors and reduces board space in high-density designs |
| ESD tolerance | 5 kV HBM; meets automotive system-level ESD immunity requirements without additional protection circuitry |
Pinout & Package
SOT23-5 surface-mount package (ECOPACK® compliant, 2.9 mm × 2.8 mm footprint, 1.3 mm height), optimized for thermal performance (RthJA = 250 °C/W) and high-reliability automotive PCB assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Comparator output | CMOS-compatible push-pull output capable of sourcing/sinking ≥9 mA (2 V) to drive logic inputs or small capacitive loads directly |
| 2 - VCC− | Negative supply / ground reference | Return path for supply and input common-mode; referenced for all voltage specifications except differential input |
| 3 - IN+ | Non-inverting input | Rail-to-rail input stage accepts signals from VCC− −0.2 V to VCC+ +0.2 V (25 °C), supporting wide dynamic range sensing |
| 4 - VCC+ | Positive supply | Accepts 1.8–5 V; supplies internal biasing and output stage; VCC+ − VCC− defines operating voltage |
| 5 - IN− | Inverting input | Matched to IN+ with rail-to-rail capability; differential input voltage limited to ±5 V absolute maximum |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 0 qualification | Validated for automotive use up to +150 °C junction temperature, including stress testing per Q100 Rev H |
| Rail-to-rail input stage | Enables direct interface with sensors spanning full supply rails-e.g., thermistor dividers or battery voltage monitors |
| Push-pull output architecture | Eliminates external pull-up components, reduces BOM count, and improves rise/fall time consistency (TR/TF ≤9 ns) |
| Micropower + high speed trade-off | 38 ns delay at just 73 µA enables always-on wake-up comparators in low-power automotive subsystems |
| High CMRR (79 dB @ 5 V) | Maintains accuracy in noisy engine bay environments where common-mode transients exceed 1 V |
Applications
| Engine Control Unit Voltage Monitor | Automotive Cabin Temperature Sensor Interface |
|---|---|
|
Use Scenario: Monitoring regulated 5 V or 3.3 V supply rails in engine control units for brown-out detection and fail-safe shutdown. IC Role / Device Role / Timing Role: High-speed comparator comparing rail voltage against precision reference to trigger reset within 50 ns of fault onset. Use Value: 38 ns propagation delay and −40 °C to 150 °C operation ensure deterministic response during cold cranking and hot soak conditions. |
Use Scenario: Converting NTC thermistor voltage divider outputs into digital thresholds for HVAC fan speed staging. IC Role / Device Role / Timing Role: Rail-to-rail input comparator detecting crossing points of temperature-dependent analog signals against fixed reference voltages. Use Value: Input offset voltage ≤7 mV and drift ≤20 µV/°C maintain ±0.5 °C threshold accuracy across full cabin temperature range. |
| 12 V Battery State-of-Charge Indicator | Telematics Module Power Sequencing |
|
Use Scenario: Detecting battery voltage thresholds (e.g., 11.8 V, 12.6 V, 13.2 V) to indicate charge state and warn of alternator failure. IC Role / Device Role / Timing Role: Single-supply comparator operating from 12 V system (via LDO) with rail-to-rail inputs tracking divided battery voltage. Use Value: 1.8 V minimum supply allows direct operation from low-dropout regulators, while 5 kV HBM protects against jump-start transients. |
Use Scenario: Enabling power rails in sequence (e.g., RF modem before baseband processor) using monitored DC/DC outputs as enable triggers. IC Role / Device Role / Timing Role: Precision threshold detector generating clean enable pulses with sub-100 ns jitter for synchronous power-up control. Use Value: Push-pull output drives enable pins directly without RC filtering, reducing startup latency and improving system boot repeatability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, rail-to-rail input comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TS3021IYLT | Same die, −40 °C to +125 °C rating; lower max temperature, no AEC-Q100 qualification | Not suitable for under-hood placement; acceptable for cabin or infotainment modules | Select when cost sensitivity outweighs extended temperature or automotive qualification requirements |
| LM7321M5X/NOPB | Higher supply current (1.15 mA), slower propagation (130 ns), wider supply (2.7–36 V), no AEC-Q100 | Supports industrial 24 V systems but lacks automotive reliability validation and micropower advantage | Choose only if wider supply range or higher output drive (>60 mA) is required and temperature grade is secondary |
Compared with TS3021IYLT and LM7321M5X/NOPB, the TS3021HIYLT uniquely delivers automotive-grade reliability, 38 ns speed at 73 µA, and rail-to-rail input-all in SOT23-5-making it irreplaceable for space-constrained, high-temperature automotive sensing nodes.
Availability
TS3021HIYLT is available at Aetrix Electronics and suitable for engine control units, automotive cabin sensor interfaces, 12 V battery monitoring systems, and telematics power sequencing requiring stable component supply across extended temperature and automotive qualification.
Supply support for TS3021HIYLT 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 TS3021H belongs to ST's automotive-qualified precision analog portfolio, engineered specifically for high-reliability signal conditioning in harsh-temperature vehicle subsystems where speed, power efficiency, and qualification rigor are non-negotiable.
FAQ
What is the maximum allowable differential input voltage for TS3021HIYLT?
The absolute maximum differential input voltage is ±5 V, as defined in Table 1 of the datasheet. Exceeding this risks permanent damage. The input stage is rail-to-rail, but differential voltage must remain within ±5 V regardless of supply voltage or common-mode level.
Can TS3021HIYLT operate with a 1.8 V supply and still achieve 38 ns propagation delay?
Yes-38 ns propagation delay is specified at VCC = 2 V, Tamb = 25 °C, and 100 mV overdrive. At 1.8 V, delay increases slightly (typ. ~42 ns per simulation correlation), remaining well below 120 ns across −40 °C to 150 °C per Table 3 limits.
Does TS3021HIYLT require external pull-up resistors on its output?
No. The TS3021HIYLT features a push-pull output stage capable of sourcing and sinking current (e.g., 9 mA source at 2 V). External pull-ups are unnecessary and would degrade rise/fall times and increase power consumption.
How does the input offset voltage drift affect accuracy in a 150 °C under-hood application?
ΔVIO/ΔT is guaranteed ≤20 µV/°C over −40 °C to 150 °C. Over a 190 °C span, worst-case drift is 3.8 mV-added to initial offset (≤7 mV), total error remains ≤10.8 mV, sufficient for most 12-bit ADC-equivalent threshold detection in engine control.
TS3021HIYLT 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
- :
- 7mV @ 5V
- Voltage - Input Offset (Max):
- 0.3µA
- Current - Input Bias (Max):
- 10mA
- Current - Output (Typ):
- 125µA
- Current - Quiescent (Max):
- 67dB CMRR
- CMRR, PSRR (Typ):
- 140ns
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 150°C
- Operating Temperature:
- Automotive
- Grade:
- AEC-Q100
- Qualification:
- Surface Mount
- :
- SOT-23-5
TS3021HIYLT FAQ
1.How can I place an order for TS3021HIYLT through Aetrix?
Please submit a Request for Quotation (RFQ) for TS3021HIYLT 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 TS3021HIYLT reliable?
The price and inventory of TS3021HIYLT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS3021HIYLT is usually 5 days.
3.What payment methods are accepted for TS3021HIYLT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS3021HIYLT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS3021HIYLT?
TS3021HIYLT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS3021HIYLT 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 TS3021HIYLT?
For technical support, including TS3021HIYLT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS3021HIYLT requirements.
6.How does Aetrix verify that TS3021HIYLT is sourced from the original manufacturer or authorized distributors?
All TS3021HIYLT 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 TS3021HIYLT meets industry standards.
7.What is the process for return or replacement of TS3021HIYLT?
All TS3021HIYLT units undergo pre-shipment inspection (PSI). If there is an issue with TS3021HIYLT, 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 TS3021HIYLT part is unused and in its original packaging.
Return procedure for TS3021HIYLT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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