STMicroelectronics TS393CN

Overview

TS393CN from STMicroelectronics is a micropower dual CMOS voltage comparator in an 8-pin DIP package, delivering 9 µA typical supply current per comparator, ±1 pA input bias/offset current, and 2.5 µs response time with 5 mV overdrive. It operates from 2.7 V to 16 V single supply (or ±1.35 V to ±8 V dual), supports rail-to-rail input down to ground, and targets battery-powered sensor monitoring and precision threshold detection.

For engineers reviewing the TS393CN datasheet, TS393CN pinout, TS393CN application, or TS393CN equivalent, this page delivers verified electrical specs, DIP8 terminal mapping, real-world use cases in low-power analog signal conditioning, and validated alternatives for supply-constrained designs.

Technical Context

The TS393CN integrates two independent high-impedance CMOS comparators with complementary push-pull outputs-no external pull-up required. Its input stage features 10¹² Ω typical impedance and common-mode range extending to VCC− (ground), enabling direct interfacing with resistive sensors and reference dividers without level-shifting.

It achieves 70–80 dB common-mode and supply voltage rejection across 2.7–10 V operation, with output low voltage specified at 400–650 mV under 6 mA sink load-suitable for direct TTL/CMOS logic interfacing. Thermal resistance (Rthja) is 85 °C/W in DIP8, supporting ambient operation up to +70 °C.

Key Specifications

Pinout & Package

TS393CN is supplied in an 8-pin plastic DIP (dual in-line package) with 2.54 mm lead pitch, through-hole mounting, and industry-standard footprint compatible with LM393 layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual micropower comparator applications.

Compared with LM393DR and TS3702CDT, TS393CN uniquely balances ultra-low power, DIP8 accessibility, and LM393 pin compatibility-making it optimal for low-volume, maintenance-sensitive, or battery-constrained dual-threshold applications where layout flexibility matters.

Availability

TS393CN is available at Aetrix Electronics and suitable for temperature monitoring, battery supervision, smoke detector signal conditioning, and industrial analog threshold detection requiring stable component supply across extended product lifecycles.

Supply support for TS393CN 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 analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.

The TS393 belongs to ST's precision analog comparator family, engineered specifically for energy-efficient signal conditioning in portable, battery-operated, and maintenance-free electronic systems.

FAQ

Can TS393CN operate from a single 3.3 V supply?

Yes. TS393CN supports single-supply operation from 2.7 V to 16 V. At 3.3 V, it maintains full functionality: input common-mode range spans 0 V to 1.8 V, output low voltage remains ≤550 mV at 6 mA load, and supply current stays near 9 µA. This makes it ideal for 3.3 V microcontroller-based sensor interfaces.

Does TS393CN require external pull-up resistors on its outputs?

No. Unlike open-drain comparators, TS393CN features CMOS push-pull outputs capable of actively driving high or low. External pull-ups are unnecessary unless interfacing with legacy 5 V logic while operating from a lower supply-then a level-shifting resistor network may be added.

How does TS393CN's input offset voltage affect accuracy in precision threshold detection?

With a maximum input offset voltage of 6.5 mV at 25 °C (rising to ~10 mV over full temperature range), TS393CN introduces up to ±6.5 mV uncertainty in trip-point setting. For sub-millivolt accuracy, external trimming or calibration is required; for general-purpose battery monitoring or thermal cutoff, this offset is negligible.

Is TS393CN pin-compatible with LM393 in DIP8 packages?

Yes. TS393CN uses identical DIP8 pinout and functional mapping: pins 1/7 are outputs, pins 2/3/5/6 are inputs, and pins 4/8 are GND/VCC+. Electrical differences (e.g., CMOS vs. bipolar inputs, no pull-up needed) allow direct substitution without layout changes-though design review of input bias and output loading is recommended.