STMicroelectronics TS374IN

Overview

TS374IN from STMicroelectronics is a quad CMOS voltage comparator with rail-to-rail input common-mode range including ground, 1 pA typical input bias current, 200 ns typical response time, and TTL/MOS/CMOS-compatible outputs-designed for low-power precision threshold detection in battery-powered sensor interfaces.

For engineers reviewing the TS374IN datasheet, TS374IN pinout, TS374IN application, or TS374IN equivalent, key selection criteria include input offset voltage (≤12 mV), supply current per comparator (250 µA max), operating temperature range (–40°C to +125°C), and SO14/DIP14 package compatibility.

Technical Context

The TS374IN integrates four independent comparators fabricated using ST's silicon-gate LinMOS process, enabling ultra-low input bias current (1 pA typ) and high input impedance (10¹² Ω typ) while maintaining fast propagation delay (200 ns typ at 5 V). Each comparator features an input common-mode range extending from ground to V_CC – 2.25 V and output saturation voltage of 150 mV typ at 4 mA sink.

It operates from single supplies (3–16 V) or dual supplies (±1.5 V to ±8 V), with absolute maximum ratings supporting ±18 V differential input voltage and 18 V supply rails. The device is specified across industrial and extended temperature ranges (–40°C to +125°C), with thermal limits defined by junction temperature (150°C) and package-specific R_thJA.

Key Specifications

Pinout & Package

TS374IN is supplied in a 14-pin plastic DIP (Dual In-line Package) with through-hole mounting. Pin assignments follow standard quad comparator layout with independent inputs and open-collector compatible outputs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM339DR and TLV3704IDR, TS374IN uniquely balances ultra-low input bias (1 pA), 200 ns speed, and rail-to-rail input capability within a 3–16 V supply envelope-making it optimal for precision, medium-speed, mixed-signal embedded detection where sensor loading and timing coexist as constraints.

Availability

TS374IN is available at Aetrix Electronics and suitable for overvoltage protection circuits, battery state-of-charge monitors, industrial temperature sensor interfaces, and motor phase current zero-crossing detection requiring stable component supply across automotive, industrial, and IoT design cycles.

Supply support for TS374IN 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, designing and manufacturing analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.

The TS374 belongs to ST's precision analog comparator product line, engineered for low-power, high-accuracy voltage decision-making in resource-constrained embedded systems where input impedance and response time critically impact signal integrity.

FAQ

Is TS374IN pin-compatible with TS374CN or TS374CD?

Yes, TS374IN uses the same 14-pin DIP footprint as TS374CN and TS374CD. All variants share identical pinout, electrical specifications, and functional behavior-the only difference is temperature grade: TS374IN is rated for –40°C to +125°C, while TS374CN is 0°C to +70°C and TS374CD is –40°C to +125°C in SO14 package.

Can TS374IN drive a 10 kΩ pull-up resistor directly?

Yes. With 4 mA sink capability and 150 mV saturation voltage at that load, TS374IN can reliably assert logic-low to a 10 kΩ pull-up to 5 V (producing 0.15 V output), meeting TTL and 3.3 V CMOS input thresholds. For higher pull-up values (>100 kΩ), verify noise margin due to leakage paths.

Does TS374IN require external hysteresis for stable switching?

Yes-like most comparators without built-in hysteresis, TS374IN benefits from external positive feedback (e.g., resistor from output to non-inverting input) when comparing slow-moving or noisy signals. Its 1 pA input bias current makes hysteresis resistor values up to 10 MΩ practical without significant offset error.

What is the maximum capacitive load TS374IN can drive without oscillation?

TS374IN is stable driving up to 15 pF as specified in the datasheet (200 ns test condition with 5.1 kΩ pull-up and 15 pF load). Driving >30 pF may increase propagation delay and cause ringing; for heavier loads, add a series 50 Ω resistor near the output pin to isolate capacitance.