STMicroelectronics TS881ILT

Overview

TS881ILT from STMicroelectronics is a single rail-to-rail nanopower comparator with 210 nA typical supply current (V_CC = 1.2 V, output high), 2 µs typical propagation delay, and operation down to 0.85 V supply voltage. It features push-pull output, ±6 V differential input tolerance, and operates across –40 °C to +125 °C for battery-constrained medical and portable sensing systems.

For engineers reviewing the TS881ILT datasheet, TS881ILT pinout, TS881ILT application, or TS881ILT equivalent, key selection criteria include ultra-low quiescent current at sub-1 V supply, rail-to-rail input common-mode range, hysteresis-enabled noise immunity, and SC70-5 footprint compatibility in space-limited wearable and implantable designs.

Technical Context

The TS881ILT uses a CMOS input stage with built-in hysteresis (1.6–4.2 mV) to suppress noise-induced output toggling without external feedback. Its rail-to-rail input range extends from V_CC– – 0.2 V to V_CC+ + 0.2 V at low supply voltages and fully to V_CC at higher rails, enabling direct interface with low-voltage sensors and ADC references.

Propagation delay remains stable across temperature (–40 °C to +125 °C) and supply voltage (0.85–5.5 V), with T_PLH/T_PHL as low as 2.0–2.6 µs at 100 mV overdrive. The push-pull output delivers 0.83–4.86 V high-level and 20–280 mV low-level drive into 50 µA–2 mA loads, eliminating need for external pull-ups.

Key Specifications

Pinout & Package

TS881ILT is packaged in SC70-5 (SOT323-5), a 1.25 mm × 1.65 mm surface-mount package with 0.65 mm pitch, optimized for high-density portable PCBs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar nanopower comparator applications.

Compared with TLC3701CDR and NCS2200SN2T1G, TS881ILT uniquely combines sub-1 V operation, rail-to-rail inputs, integrated hysteresis, and true nanopower consumption-making it the sole option for long-life, miniaturized medical and energy-harvesting comparators.

Availability

TS881ILT is available at Aetrix Electronics and suitable for portable medical devices, battery-powered IoT sensors, energy-harvesting transmitters, and automotive cabin environment monitors requiring stable component supply across extended temperature and low-voltage conditions.

Supply support for TS881ILT 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, specializing in power management, analog, MEMS, and microcontrollers for industrial, automotive, and consumer markets.

The TS881ILT belongs to ST's nanopower analog comparator product line, engineered specifically for ultra-low-energy signal conditioning in battery-constrained and energy-harvesting systems where every nanoamp counts.

FAQ

What is the minimum supply voltage for guaranteed operation of TS881ILT?

The TS881ILT is fully specified down to 0.85 V supply voltage across –40 °C to +85 °C, with functional operation confirmed to 0.75 V in characterization. At 0.85 V, propagation delay increases to ~14 µs (10 mV overdrive), and supply current remains below 400 nA - enabling use with single-cell NiMH or emerging solid-state batteries.

Does TS881ILT require external hysteresis resistors?

No. TS881ILT integrates 1.6–4.2 mV of internal hysteresis, eliminating the need for external feedback resistors. This simplifies layout, reduces component count, and avoids parasitic capacitance issues in high-impedance sensor interfaces - particularly beneficial in pH electrode or thermopile amplifier output stages.

Can TS881ILT drive an MCU GPIO directly?

Yes. Its push-pull output delivers VOH ≥ 0.83 V (at 1.2 V supply, 50 µA load) and VOL ≤ 70 mV, meeting standard 1.2 V/1.8 V logic thresholds. No series resistor or level shifter is needed, and the output remains stable up to 2 mA sink/source - compatible with all modern low-voltage MCUs including STM32L0/L4 and Nordic nRF52 series.

How does TS881ILT perform at high temperature?

TS881ILT maintains 210 nA typical supply current and ±6 mV input offset up to +125 °C. Propagation delay increases only marginally (≤15% at 100 mV overdrive), and hysteresis remains stable (±0.5 mV variation). This makes it suitable for under-hood automotive cabin sensors and industrial motor control feedback loops where ambient temperatures exceed 105 °C.