STMicroelectronics TS884IQ4T

Overview

TS884IQ4T from STMicroelectronics is a quad nanopower rail-to-rail comparator in QFN16 (3 × 3 mm) package, delivering 220 nA typical supply current per channel at 1.2 V, 2 µs typical propagation delay, and operation from 1.1 V to 5.5 V supply. It features push-pull outputs, built-in input hysteresis (2.4 mV typ.), and operates across –40 °C to +125 °C - enabling ultra-low-power voltage monitoring in battery-critical medical wearables.

For engineers reviewing the TS884IQ4T datasheet, TS884IQ4T pinout, TS884IQ4T application, or TS884IQ4T equivalent, key selection criteria include its sub-µA quiescent current at 1.1 V, rail-to-rail input common-mode range extending beyond rails, push-pull output drive capability without external pull-ups, and AEC-Q100–compatible qualification for automotive sensor interfaces.

Technical Context

The TS884IQ4T integrates four independent comparators with internal hysteresis, rail-to-rail input stages using CMOS input transistors, and complementary push-pull output stages capable of sourcing/sinking ≥1 mA at 1.2 V. Its input stage operates down to 1.1 V supply while maintaining <6 mV offset and >50 dB CMRR over temperature.

Propagation delay remains stable across supply voltage (1.1–5.5 V) and temperature (–40 to +125 °C), with typical TPLH/TPHL of 2.1–2.6 µs at 100 mV overdrive and 1.2 V supply. The device uses no internal reference - all thresholds are externally defined - and supports single-supply operation with inputs extending 0.2 V beyond rails.

Key Specifications

Pinout & Package

TS884IQ4T is housed in a thermally enhanced QFN16 (3 × 3 mm, 0.5 mm pitch) package with exposed thermal pad. Pin 1 is marked by a dot; pins are numbered counter-clockwise. The package supports reflow soldering and provides 45 °C/W junction-to-ambient thermal resistance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV3694IDR and MAX9064ASA+, TS884IQ4T uniquely combines sub-250 nA operation at 1.1 V, integrated hysteresis, AEC-Q100 qualification, and QFN16 thermal efficiency - making it the only choice for automotive-grade, coin-cell–powered sensor nodes requiring guaranteed parametric performance across full industrial temperature range.

Availability

TS884IQ4T is available at Aetrix Electronics and suitable for portable medical sensors, automotive cabin occupancy detectors, and industrial smoke alarms requiring stable component supply with long-lifecycle assurance and AEC-Q100 traceability.

Supply support for TS884IQ4T 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 microcontrollers, analog ICs, power management devices, and sensors for industrial, automotive, and consumer markets.

The TS88x series belongs to ST's nanopower analog portfolio, engineered specifically for battery-constrained applications demanding sub-µA operation, wide supply range, and robust performance across extreme temperatures.

FAQ

What is the maximum input common-mode voltage for TS884IQ4T at 1.2 V supply?

At VCC = 1.2 V, the input common-mode voltage range is specified as (VCC−) to (VCC+) + 0.2 V, i.e., 0 V to 1.4 V. This rail-to-rail capability allows direct interfacing with sensors and amplifiers operating near ground or supply without level-shifting circuitry, and is guaranteed across –40 °C to +125 °C.

Does TS884IQ4T require external hysteresis resistors?

No. TS884IQ4T includes built-in input hysteresis of 1.5–4.2 mV (typ. 2.4 mV), eliminating the need for external feedback components. This simplifies PCB layout, reduces component count, and ensures consistent noise immunity across temperature and supply voltage - confirmed in Tables 4–6 of the official datasheet.

Is the QFN16 package of TS884IQ4T lead-free and RoHS-compliant?

Yes. TS884IQ4T is supplied in an ECOPACK®-compliant QFN16 package meeting RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. The device carries the "ECOPACK2" designation per ST's environmental compliance documentation, with lead-free matte tin terminations and halogen-free molding compound.

Can TS884IQ4T operate reliably at 1.1 V supply across full temperature range?

Yes. The datasheet explicitly specifies operation from 1.1 V to 5.5 V over –40 °C to +125 °C, with all key parameters - including supply current (300 nA max per channel), propagation delay (≤11 µs), and output drive - guaranteed across this range. Electrical characteristics tables (Tables 4–6) confirm parametric validity at 1.1 V, 1.2 V, 2.7 V, and 5 V.