STMicroelectronics TS393IYDT

Overview

TS393IYDT 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 V to 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 SO-8 packaging qualified for automotive applications (AEC-Q100 Grade 1).

For engineers reviewing the TS393IYDT datasheet, TS393IYDT pinout, TS393IYDT application, or TS393IYDT equivalent, key selection criteria include ultra-low quiescent current in battery-sensitive systems, guaranteed operation across extended temperature (−40 °C to +125 °C), compatibility with LM393 footprints, and automotive-grade reliability validation.

Technical Context

The TS393IYDT integrates two independent high-impedance CMOS comparators with complementary push-pull outputs-no external pull-up required. Its input stage uses MOSFET differential pairs enabling 10¹² Ω typical input impedance and 1 pA bias/offset currents, supporting precision sensing in high-impedance source environments.

Designed for low-power industrial and automotive monitoring, it maintains stable operation across 2.7–16 V supply and −40 °C to +125 °C ambient, with 70 dB minimum common-mode and supply voltage rejection ratios ensuring robustness against noise and rail variation in noisy electrical systems.

Key Specifications

Pinout & Package

TS393IYDT is supplied in an SO-8 (Small Outline) plastic micropackage, 3.9 mm × 4.9 mm body, 1.27 mm pitch, RoHS-compliant and ECOPACK® certified.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM393DR and TS3702IDT, TS393IYDT uniquely combines automotive temperature grade, 16 V supply tolerance, and sub-10 µA quiescent current - making it the only option for AEC-Q100-compliant, wide-supply, ultra-low-power dual comparator deployments.

Availability

TS393IYDT is available at Aetrix Electronics and suitable for automotive sensor modules, battery management systems, and industrial process controllers requiring stable component supply with guaranteed long-term availability and automotive qualification.

Supply support for TS393IYDT 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 mobility, power, and sensing applications.

The TS393 belongs to ST's precision analog comparators product line, engineered specifically for ultra-low-power sensing and monitoring in automotive, industrial, and portable equipment where battery life and signal integrity are critical.

FAQ

Is TS393IYDT pin-compatible with LM393CDT?

Yes, TS393IYDT uses the same SO-8 footprint and pin assignment as LM393CDT, including identical pin 1 (inverting input 1) through pin 8 (V_CC+). However, TS393IYDT replaces open-collector outputs with push-pull CMOS outputs, eliminating the need for external pull-up resistors while maintaining functional equivalence in most threshold-detection circuits.

What is the maximum input voltage allowed when V_CC+ = 12 V?

Per absolute maximum ratings, the input voltage (V_IN) may reach up to 18 V regardless of supply voltage, provided the common-mode voltage [V_ICM = (V_IN+ + V_IN−)/2] stays within 0 V to V_CC+ − 1.5 V. At V_CC+ = 12 V, this allows V_ICM up to 10.5 V, and differential inputs up to ±18 V - enabling direct interface with 12 V sensor signals without clamping diodes.

Does TS393IYDT support dual-supply operation?

Yes, TS393IYDT operates with split supplies from ±1.35 V to ±8 V. Pin 4 serves as V_CC− (negative rail), and pin 8 as V_CC+ (positive rail). This configuration supports bipolar signal conditioning - for example, comparing AC-coupled audio or motor phase signals centered at 0 V - while retaining 1 pA input bias and 9 µA supply current per comparator.

How does the push-pull output improve system design versus open-collector?

The CMOS push-pull output actively drives both logic HIGH and LOW states, removing dependency on external pull-up resistors. This reduces component count, eliminates resistor-induced delays and power loss (especially critical in 3.3 V/1.8 V systems), improves noise immunity by lowering output impedance, and simplifies interfacing with modern low-voltage MCUs that lack internal weak pull-ups or require precise timing margins.