STMicroelectronics TS881ICT

Overview

TS881ICT 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. It features push-pull output, ±6 V differential input tolerance, and operates across –40 °C to +125 °C - enabling ultra-low-power voltage monitoring in battery-constrained medical sensors and portable instrumentation.

For engineers reviewing the TS881ICT datasheet, TS881ICT pinout, TS881ICT application, or TS881ICT equivalent, key selection criteria include sub-1-V operation capability, nanoscale quiescent current stability over temperature, rail-to-rail input common-mode range, and SC70-5 package compatibility for space-constrained PCB layouts.

Technical Context

The TS881ICT implements a CMOS input stage with built-in hysteresis (1.6–4.2 mV typ.) and a push-pull output stage capable of sourcing/sinking up to 32 mA at 5 V. Its input offset voltage remains tightly bounded (±6 mV over –40 °C to +125 °C) and exhibits low drift (3 µV/°C), supporting precision threshold detection in varying thermal environments.

Supply voltage rejection (65–80 dB) and common-mode rejection (50–78 dB) are maintained across 0.85–5.5 V operation, enabling reliable performance in noisy, multi-rail embedded systems. Propagation delay varies predictably with overdrive (2.0–4.2 µs for 100 mV overdrive) and supply voltage, allowing deterministic timing design in wake-up and alert circuits.

Key Specifications

Pinout & Package

TS881ICT is packaged in SC70-5 (SOT323-5), a 1.25 mm × 2.1 mm surface-mount package with 0.65 mm pitch. This compact footprint supports high-density layout in wearables and ingestible sensors.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLC3701CDR and NCS2200SQ2T2G, TS881ICT uniquely delivers sub-1-V functionality, integrated hysteresis, and 210 nA I_Q in a 5-pin SC70 - making it the only option for maintenance-free, single-cell, decade-long sensor deployments requiring rail-to-rail input and push-pull output.

Availability

TS881ICT is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered IoT endpoints, wearable health monitors, and industrial wireless sensor nodes requiring stable component supply across extended product lifecycles.

Supply support for TS881ICT 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 TS881ICT belongs to ST's nanopower analog comparator family, engineered specifically for energy-harvesting and battery-constrained applications where microampere-level current budgets and wide temperature resilience are mandatory.

FAQ

What is the minimum supply voltage for guaranteed operation of TS881ICT?

TS881ICT is fully specified and guaranteed to operate down to 0.85 V supply voltage across –40 °C to +125 °C, with functional performance including propagation delay, input offset, and output drive validated per Table 2 of the datasheet. Below 0.85 V, behavior is not characterized.

Does TS881ICT require external hysteresis components?

No. TS881ICT integrates 1.6–4.2 mV typical hysteresis internally, eliminating the need for external positive feedback resistors. This is confirmed in Section 3 Electrical Characteristics (Table 3–6, V_{HYST) and Figure 9/11/13/35, which show hysteresis vs. voltage and temperature.}

Can TS881ICT drive a standard CMOS logic input directly?

Yes. With its push-pull output, TS881ICT delivers VOH ≥ 1.10 V (at V_CC = 1.2 V, I_source = 0.2 mA) and VOL ≤ 70 mV (same conditions), meeting input threshold requirements for 1.2 V, 1.8 V, and 3.3 V CMOS families without level-shifting or pull-up resistors.

Is the SC70-5 package of TS881ICT compatible with reflow soldering per JEDEC J-STD-020?

Yes. The SC70-5 (SOT323-5) package is rated for standard Pb-free reflow profiles per JEDEC J-STD-020D, with peak temperature up to 260 °C for 10 seconds. Thermal resistance (R_THJA = 205 °C/W) and moisture sensitivity level (MSL3) are specified in Table 1 of the datasheet.