STMicroelectronics TS393ID

Overview

TS393ID from STMicroelectronics is a micropower dual CMOS voltage comparator with 9 µA typical supply current per comparator, ±1.35 V to ±8 V dual or 2.7–16 V single supply operation, and 1 pA typical input bias current. It features rail-to-rail input common-mode range including ground, 2.5 µs typical response time at 5 mV overdrive, and pin-to-pin compatibility with LM393 for low-power sensing in battery-operated instrumentation.

For engineers reviewing the TS393ID datasheet, TS393ID pinout, TS393ID application, or TS393ID equivalent, this device is selected for ultra-low-quiescent-current analog threshold detection where input impedance >10¹² Ω, supply flexibility, and ESD-robust (500 V HBM) performance are critical in space-constrained industrial and portable designs.

Technical Context

The TS393ID implements two independent CMOS comparators with high-impedance differential inputs and open-drain outputs, enabling wired-OR logic and level translation across supply domains. Its input stage operates down to ground and up to V_CC−1.5 V, supporting direct interfacing with sensors and microcontroller ADC references.

Designed for micropower systems, it achieves 2.5 µs propagation delay with 5 mV overdrive while consuming only 9 µA per channel - 20× lower than bipolar LM393. The architecture avoids internal latch-up risk and supports stable operation under wide temperature (−40°C to +125°C) and supply-voltage variation.

Key Specifications

Pinout & Package

TS393ID is supplied in SO-8 plastic micropackage (ECOPACK® compliant), measuring 4.9 mm × 6.0 mm × 1.25 mm (max height), with 1.27 mm pitch gull-wing leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM393DR and TLV3702IDR, TS393ID uniquely balances ultra-low 9 µA current, ground-sensing capability, and 1 pA input bias - making it optimal for long-life, high-impedance, wide-supply industrial monitoring where open-drain flexibility is retained.

Availability

TS393ID is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial sensor nodes, and automotive body electronics requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for TS393ID 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 smart driving, power management, and industrial control applications.

The TS393 belongs to ST's precision analog comparator product line, engineered specifically for micropower, high-input-impedance sensing in resource-constrained embedded systems - emphasizing longevity, reliability, and ease of integration across voltage domains.

FAQ

Can TS393ID operate from a single 3.3 V supply?

Yes. TS393ID 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 functionality across −40°C to +125°C. Input common-mode range extends from ground to 1.8 V, enabling direct interface with 3.3 V reference sources and sensors.

Does TS393ID require external pull-up resistors on its outputs?

Yes. TS393ID features open-drain NMOS outputs (pins 3 and 7). Each output must be pulled up to a valid logic-high voltage - which may differ from V_CC+ - using an external resistor. Typical values range from 4.7 kΩ to 100 kΩ depending on rise-time and bus capacitance requirements.

How does TS393ID's input offset voltage affect accuracy in precision threshold detection?

TS393ID specifies a maximum input offset voltage of 6.5 mV at 25°C (up to 10 mV over full temperature range). In a 5 V system detecting a 2.5 V threshold, this introduces ±0.26% uncertainty. For sub-millivolt accuracy, external trimming or calibration is required - the device itself provides stable, low-drift performance suitable for <1% tolerance applications.

Is TS393ID pin-compatible with TS393CD?

Yes. TS393ID and TS393CD share identical SO-8 footprint, pinout, and electrical specifications. The only difference is temperature grade: TS393CD is rated for 0°C to +70°C, while TS393ID is rated for −40°C to +125°C. Both use the same S393C/S393I marking and are mechanically and functionally interchangeable in layout.