STMicroelectronics TS372IDT

Overview

TS372IDT from STMicroelectronics is a dual low-power CMOS voltage comparator operating from 3 V to 16 V single supply or ±1.5 V to ±8 V dual supply, featuring 0.1 mA/comparator supply current, 1 pA typical input bias current, and 200 ns typical response time. It is used in battery-powered instrumentation for precision threshold detection with rail-to-rail input common-mode range including ground.

For engineers reviewing the TS372IDT datasheet, TS372IDT pinout, TS372IDT application, or TS372IDT equivalent, key selection criteria include ultra-low input bias current (1 pA), input offset voltage ≤12 mV, output compatibility with TTL/MOS/CMOS logic families, and operation across -40°C to +125°C industrial temperature range.

Technical Context

The TS372IDT integrates two independent silicon-gate MOS comparators using ST's LinMOS process, enabling high input impedance (10¹² Ω) and minimal power consumption without sacrificing speed. Its differential input stage supports input voltages down to GND and up to V_CC–2.5 V, with internal clamping diodes limiting differential input voltage to ±18 V.

Output stage delivers TTL-compatible saturation voltage (150 mV typ at I_OL = 4 mA) and can sink up to 45 mA while maintaining fast 200 ns propagation delay under 5 V supply and 15 pF load conditions. Unused channels require ≥100 mV differential input to prevent oscillation.

Key Specifications

Pinout & Package

TS372IDT is supplied in an SO-8 plastic micropackage (ECOPACK® compliant), 5.0 mm × 6.2 mm body, 1.27 mm pitch, with gull-wing leads. Thermal resistance R_thJA = 175°C/W.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual low-power voltage comparator applications.

Compared with LM393DT and TLV3702IDR, TS372IDT uniquely balances ultra-low input bias (1 pA), industrial temperature range (-40°C to +125°C), and 200 ns speed-making it optimal for precision, wide-temperature, medium-speed sensing in portable industrial tools.

Availability

TS372IDT is available at Aetrix Electronics and suitable for battery voltage monitoring, portable medical sensor interfaces, industrial temperature threshold alarms, and smart smoke detector supervisory circuits requiring stable component supply across extended temperature ranges.

Supply support for TS372IDT 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, power ICs, sensors, and analog components for industrial, automotive, and consumer markets.

The TS372 belongs to ST's precision analog comparator product line, engineered specifically for low-power, high-input-impedance sensing in portable and harsh-environment applications where accuracy and reliability across temperature extremes are critical.

FAQ

Can TS372IDT operate from a single 3.3 V supply?

Yes. TS372IDT supports single-supply operation from 3 V to 16 V. At 3.3 V, it maintains full functionality: input common-mode range includes GND and extends to ~0.8 V below V_CC, output low saturation remains ≤400 mV at 4 mA, and supply current stays near 150 µA per comparator. Verified per Table 2 and Table 3 in Doc ID 4068 Rev 2.

What is the maximum differential input voltage the TS372IDT can tolerate?

The absolute maximum differential input voltage (V_ID) is ±18 V, as specified in Table 1 of the datasheet. This rating applies regardless of supply voltage and is enforced by internal ESD protection diodes. Exceeding this may cause permanent damage, even briefly.

Is the TS372IDT pin-compatible with TS372CDT?

Yes - both share identical SO-8 package footprint, pin numbering, and electrical pin functions. The only difference is temperature grade: TS372IDT is rated for -40°C to +125°C, while TS372CDT is rated for 0°C to +70°C. No layout or schematic changes are needed for substitution within thermal limits.

How should unused comparator channels be terminated?

An unused comparator must be biased with a differential input voltage ≥100 mV to prevent oscillation. Recommended practice: tie its inverting input to V_CC and non-inverting input to GND (or vice versa), ensuring clean DC state. Do not leave inputs floating - parasitic coupling may induce false triggering and increased current draw.