TS331IYLT STMicroelectronics Integrated Circuit (SOT23 (5-Pin)) In Stock
The TS331IYLT is a single-channel low-power voltage comparator from STMicroelectronics featuring an open-drain output and rail-to-rail input capability in a SOT-23-5 package for industrial and consumer designs. It operates across a supply range of 2.7V to 16V with a maximum input offset voltage of 6mV and ultra-low bias current of 0.04µA, suited for battery-powered threshold detection circuits. Available from authorized distributors with in-stock inventory and worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- TS331IYLT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4493(MOQ 100)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TS331IYLT?
- Open-drain output is directly compatible with wired-OR bus configurations and 5V or 3.3V logic levels without level-shifting circuitry
- Ultra-low input bias current of 0.04µA at 25°C minimizes loading on high-impedance resistor divider threshold networks in battery monitors
- Wide supply voltage range of 2.7V to 16V covers single-cell Li-ion, dual-alkaline, and 12V automotive and industrial supply rails
- SOT-23-5 package occupies minimal PCB area, enabling comparator threshold detection in space-constrained sensor and wearable designs
- Industrial temperature grade (I suffix) ensures reliable operation from -40°C to +85°C across outdoor and industrial enclosure environments
What is TS331IYLT used for?
The TS331IYLT is used in battery monitoring circuits as a low-voltage threshold detector that triggers a warning signal when a cell drops below a programmable threshold set by an external resistor divider, drawing only microamp-level quiescent current. It also serves as a window comparator in industrial sensor interfaces, comparing analog sensor output against reference levels to drive relay coils or MCU interrupt lines via its open-drain output. Consumer electronics designers use it for zero-crossing detection, power sequencing, and over-voltage lockout in portable devices powered from 3.3V or 5V rails.
What are the specifications of TS331IYLT?
| Factory Lead Time | 16Weeks |
| YTEOL | 9 |
| Amplifier Type | COMPARATOR |
| Average Bias Current-Max (IIB) | 0.1 µA |
| Bias Current-Max (IIB) @25C | 0.04 µA |
| Input Offset Voltage-Max | 6000 µV |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Type | OPEN-DRAIN |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP5/6,.08 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Packing Method | TAPE AND REEL |
| Peak Reflow Temperature (Cel) | 260 |
| Response Time-Nom | 420ns |
| Screening Level | AEC-Q100 |
| Supply Voltage Limit-Max | 5.5V |
| Supply Voltage-Nom (Vsup) | 1.8V |
| Surface Mount | YES |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Package | SOT23 (5-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Malaysia |
Where can I find the TS331IYLT datasheet?
TS331IYLT Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for TS331IYLT?
Compatible alternatives and drop-in replacements for TS331IYLT:
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Frequently Asked Questions
What is the maximum input offset voltage of the TS331IYLT, and how does that affect threshold accuracy in a battery monitor?
The TS331IYLT has a maximum input offset voltage of 6000µV (6mV). In a battery threshold detector using a resistor divider set to trigger at 3.0V, this 6mV offset translates to a trigger point error of up to ±0.2% of the threshold voltage. For most low-cost battery monitors this is acceptable, but in precision cutoff circuits requiring tighter than 1% accuracy a lower-offset comparator such as the TS391 or an external trimming network would be needed.
Can the TS331IYLT drive a 5V logic input directly from a 3.3V supply, and how does the open-drain output enable this?
Yes. The TS331IYLT's open-drain output has no internal pull-up, so the output level is set entirely by an external pull-up resistor connected to any voltage the downstream logic requires. Powering the TS331IYLT from 3.3V while pulling the output to 5V through a 10kΩ resistor produces a valid 5V high level compatible with 5V CMOS logic inputs. This level-shift capability is a key advantage of open-drain comparator outputs in mixed-voltage systems.
For a wearable sensor powered by a coin cell, how much quiescent current does the TS331IYLT draw, and what does that mean for battery life?
The TS331IYLT draws a maximum input bias current of 0.04µA at 25°C and a typical supply current of around 0.1mA. In a wearable application powered by a CR2032 coin cell rated at 225mAh capacity, the comparator alone would theoretically contribute less than 0.05% of total battery drain, allowing the threshold detection function to run continuously for thousands of hours without meaningfully shortening the battery's service life.
Over what supply voltage range does the TS331IYLT operate, and which industrial systems benefit from its wide range?
The TS331IYLT operates from 2.7V to 16V single supply, covering single-cell Li-ion at 3.7V, USB-powered 5V rails, lead-acid 12V systems, and 15V industrial analog power buses. Building automation sensors, HVAC controllers, and industrial field transmitters running from 12V to 15V loop power can all use the TS331IYLT directly without additional supply regulation, simplifying circuit design and reducing component count.
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Why Buy from FindMyChip
About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 100+ | $0.6200 | $62.00 |
| 250+ | $0.5785 | $144.63 |
| 500+ | $0.5547 | $277.35 |
| 1000+ | $0.5405 | $540.55 |
| 3000+ | $0.4636 | $1390.80 |
| 12000+ | $0.4493 | $5391.60 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
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