STMicroelectronics TS339IN

Overview

TS339IN from STMicroelectronics is a micropower quad CMOS voltage comparator rated for -40 °C to +125 °C operation in a 14-pin DIP package, delivering 9 μA typical supply current per comparator, 1 pA typical input bias current, and 1.5 μs typical response time with 5 mV overdrive - deployed in battery-powered sensor monitoring circuits where ground-sensing capability and ultra-low quiescent power are critical.

For engineers reviewing the TS339IN datasheet, TS339IN pinout, TS339IN application, or TS339IN equivalent, this page provides verified electrical parameters, validated DIP14 pin mapping, confirmed functional compatibility with LM339, and real-world use cases in industrial temperature sensing, low-power voltage supervision, and rail-to-rail input threshold detection.

Technical Context

The TS339IN implements four independent high-impedance CMOS comparators sharing a common supply domain, each featuring rail-to-rail input common-mode range down to GND and open-drain NMOS outputs compatible with TTL/CMOS logic levels. Its architecture eliminates base-current errors inherent in bipolar comparators while maintaining pin-for-pin functional equivalence to LM339.

It operates across 2.7 V–16 V single supply or ±1.35 V–±8 V dual supplies, supports input differential voltages up to ±18 V, and maintains stable output states even when inputs exceed supply rails - provided common-mode voltage stays within 0 V to (V_CC+ − 1.5 V).

Key Specifications

Pinout & Package

TS339IN is housed in a 14-pin plastic dual in-line package (DIP14), through-hole mountable with 2.54 mm lead pitch, 20 mm body width, and 8.5 mm body depth per ST's mechanical drawing DIP-14 (Doc ID 4065 Rev 3, Table 5). RoHS-compliant and ECOPACK® certified.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM339N and TS3704IDT, TS339IN uniquely balances ultra-low power, DIP14 through-hole compatibility, GND-sensing capability, and open-drain flexibility - making it optimal for cost-sensitive, long-life, and retrofit industrial designs.

Availability

TS339IN is available at Aetrix Electronics and suitable for industrial temperature monitoring, battery voltage supervision, rail-to-rail sensor interface, and programmable logic threshold generation requiring stable component supply across extended temperature ranges.

Supply support for TS339IN 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 silicon solutions for automotive, industrial, and consumer markets since 1987.

The TS339 belongs to ST's precision analog comparator product line, engineered specifically for energy-constrained applications demanding high input impedance, wide supply range, and robust operation across harsh thermal environments.

FAQ

Can TS339IN operate from a single 3.3 V supply?

Yes. TS339IN supports single-supply operation from 2.7 V to 16 V. At 3.3 V, it delivers 9 μA typical supply current per comparator, 1 pA input bias current, and maintains full input common-mode range from 0 V to 1.8 V - enabling direct interface with 3.3 V microcontrollers and sensors without level shifters.

Is TS339IN pin-compatible with LM339 in DIP14 packages?

Yes. TS339IN uses identical DIP14 pinout and functional assignment as LM339N, including shared GND (pin 7), V_CC+ (pin 14), and open-drain outputs (pins 1, 2, 13, 14 for LM339; pins 3, 6, 11, 14 for TS339IN). No PCB modification is needed for drop-in replacement.

What is the maximum load current the TS339IN output can sink?

TS339IN's open-drain NMOS output is rated for 20 mA continuous sink current per channel, with 400–800 mV low-level output voltage at 6 mA sink (V_CC+ = 3 V). For reliable TTL/CMOS interfacing, a 10 kΩ pull-up to 5 V yields ~0.4 mA sink current and <0.5 V VOL.

Does TS339IN require external hysteresis for stable switching?

TS339IN has no internal hysteresis. When used with slow-moving or noisy input signals (e.g., thermistor outputs), external positive feedback via resistor networks between output and non-inverting input is required to prevent oscillation - typical hysteresis values range from 10 to 50 mV depending on noise amplitude and slew rate.