STMicroelectronics TS3704IN

Overview

TS3704IN from STMicroelectronics is a micropower quad CMOS voltage comparator with push-pull outputs, 9 μA typical supply current per comparator, ±1.35V to ±8V dual or 2.7V–16V single supply operation, and 1 pA typical input bias current. It replaces bipolar LM339 in low-power industrial sensor monitoring and battery-powered threshold detection circuits.

For engineers reviewing the TS3704IN datasheet, TS3704IN pinout, TS3704IN application, or TS3704IN equivalent, key selection criteria include micropower consumption (<10 μA/comparator), rail-to-rail input common-mode range including ground, push-pull output eliminating pull-up resistors, and guaranteed operation from –40°C to +125°C.

Technical Context

The TS3704IN integrates four independent high-impedance (10¹² Ω typ) comparators with CMOS input stages and complementary push-pull output drivers. Its input offset voltage is ≤6.5 mV over temperature, and common-mode rejection ratio is ≥80 dB, enabling stable operation under varying supply and noise conditions.

It supports wide supply ranges (2.7–16 V single or ±1.35–±8 V dual) and delivers 2 μs typical propagation delay at 5 mV overdrive with 50 pF load. Input common-mode voltage extends to GND and up to V_CC–1.5 V, allowing direct interfacing with sensors and microcontroller ADC references.

Key Specifications

Pinout & Package

DIP14 plastic package (14-pin dual in-line), through-hole mount, 20.0 mm × 8.5 mm body, 2.54 mm lead pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM339DR and TLV3704IDR, the TS3704IN uniquely balances ultra-low power (9 μA), robust industrial temperature range (–40°C to +125°C), DIP14 availability for prototyping, and push-pull outputs - making it optimal for cost-sensitive, long-life, and manually assembled industrial controls.

Availability

TS3704IN is available at Aetrix Electronics and suitable for battery-powered sensor nodes, industrial overvoltage protection systems, and automotive cabin temperature controllers requiring stable component supply across extended temperature ranges.

Supply support for TS3704IN 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 microcontrollers, analog ICs, power management devices, and sensors for industrial, automotive, and consumer markets.

The TS3704IN belongs to ST's precision analog comparator product line, engineered specifically for low-power, high-input-impedance applications in harsh environments where supply current, input leakage, and temperature stability are critical.

FAQ

What is the maximum recommended supply voltage for TS3704IN?

The absolute maximum supply voltage is 18 V for single-supply operation (V_CC+ to V_CC−). For reliable long-term operation, ST specifies 2.7–16 V. Exceeding 16 V risks accelerated parametric drift and reduced lifetime, especially at elevated temperatures.

Can TS3704IN operate with a single 3.3 V supply?

Yes - the TS3704IN is fully specified down to 2.7 V. At 3.3 V, it delivers 200–375 mV low-level output voltage and 1.8–2.4 V high-level output voltage under 4 mA load, compatible with 3.3 V logic families. Input common-mode range extends from 0 V to 1.8 V, supporting direct interfacing with 3.3 V ADC references.

Does TS3704IN require external pull-up resistors on its outputs?

No - the TS3704IN features true CMOS push-pull outputs capable of sourcing and sinking current. Unlike open-collector comparators (e.g., LM339), it drives high and low states actively, eliminating the need for external pull-up resistors and associated board space, BOM cost, and tolerance-induced timing variation.

Is the TS3704IN pin-compatible with the LM339 in DIP14 packages?

Yes - TS3704IN uses identical DIP14 pinout and functional mapping as LM339: pins 1–2–5–6–8–9–12–13 are inputs, pins 3–4–10–11 are outputs, pin 4 is V_CC−, and pin 14 is V_CC+. This allows drop-in replacement in existing LM339 layouts, provided supply current and output drive requirements align with the new CMOS outputs.