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Home > Products > Integrated Circuits (ICs) > Linear > Comparators

STMicroelectronics TS393IDT

Name: TS393IDT
Brand: STMicroelectronics
SKU: TS393IDT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TS393IDT

Manufacturer:: STMicroelectronics

Category:: Comparators

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: TS393IDT.pdf

Description:: IC COMPARATOR 2 GEN PUR 8SOIC

Quantity:: RFQ Add To RFQ list

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Inventory:9,112

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Product details

Overview

TS393IDT from STMicroelectronics is a micropower dual CMOS voltage comparator with 9 µA typical supply current per comparator, 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 SO-8 packaging - used in battery-powered sensor monitoring and precision threshold detection circuits.

For engineers reviewing the TS393IDT datasheet, TS393IDT pinout, TS393IDT application, or TS393IDT equivalent, key selection criteria include ultra-low quiescent current, ground-sensing capability, open-drain output compatibility with pull-up networks, and industrial temperature range (-40°C to +125°C) support for harsh-environment embedded systems.

Technical Context

The TS393IDT implements two independent high-impedance CMOS comparators with complementary push-pull input stages and open-drain outputs. Its input stage supports common-mode voltages from ground to V_CC − 1.5 V, enabling direct interfacing with low-voltage sensors and reference sources without level-shifting.

Each comparator delivers 70–80 dB common-mode and supply voltage rejection, stable operation across 2.7–16 V supply rails, and guaranteed performance over -40°C to +125°C ambient. Output logic states are determined solely by differential input voltage polarity, with no internal hysteresis.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply current	9 µA per comparator - enables multi-year operation on coin-cell batteries in always-on sensing nodes.
Input bias current	1 pA typical - preserves signal integrity when driving high-impedance sources like photodiodes or RC timing networks.
Input offset voltage	6.5 mV max - sets minimum detectable voltage difference in precision window or zero-crossing detection.
Response time	2.5 µs (low-to-high) at 5 mV overdrive - supports kHz-range signal monitoring without aliasing or missed transitions.
Common-mode range	0 V to V_CC − 1.5 V - allows direct connection to ground-referenced transducers and single-supply ADC references.
Output type	Open-drain - permits wired-OR logic, level translation, and flexible pull-up configuration up to 18 V.
ESD rating	1 kV CDM - provides robustness against handling-induced discharge during PCB assembly and field service.

Pinout & Package

TS393IDT is supplied in an SO-8 (Small Outline) plastic micropackage, 5.0 mm × 6.2 mm body, 1.27 mm lead pitch, with gull-wing leads and RoHS-compliant ECOPACK® construction.

Pin/Terminal	Circuit Role	Design Meaning
1	Inverting input of comparator 1	Accepts reference or threshold voltage; high-impedance node requiring guarded routing.
2	Non-inverting input of comparator 1	Connects to sensed signal; supports common-mode down to ground for direct sensor interface.
3	Output of comparator 1	Open-drain NMOS output; requires external pull-up for logic HIGH; sinks up to 20 mA.
4	V_CC− (GND)	Ground reference for both comparators and internal bias network; must be low-impedance.
5	Non-inverting input of comparator 2	Independent high-Z input; identical electrical behavior to Pin 2.
6	Inverting input of comparator 2	Independent high-Z input; identical electrical behavior to Pin 1.
7	Output of comparator 2	Open-drain NMOS output; electrically isolated from Pin 3; shares no internal coupling.
8	V_CC+	Positive supply rail; accepts 2.7–16 V; decoupling capacitor required within 10 mm.

Key Features

Feature	Design Value
Ultra-low power consumption	9 µA/comparator enables >10-year battery life in wireless sensor nodes powered by CR2032 cells.
Ground-sensing input stage	Input common-mode range includes 0 V, eliminating need for negative supply or level shifters in single-supply systems.
High input impedance	10¹² Ω typical input resistance prevents loading of high-Z sources such as thermistors and piezoelectric elements.
Industrial temperature grade	-40°C to +125°C operation supports deployment in automotive engine compartments and industrial motor control enclosures.
Pin-compatible upgrade path	Direct replacement for LM393 in existing layouts while reducing system power by 20× and improving noise immunity.

Applications

Battery Voltage Monitor

Over-Temperature Shutdown Circuit

Use Scenario: Monitoring Li-ion cell voltage during charging/discharging to trigger low-battery alert or cutoff.

IC Role / Device Role / Timing Role: Dual comparator compares cell voltage against upper/lower thresholds using resistor-divider references.

Use Value: 9 µA total quiescent current extends standby time; ground-sensing inputs enable direct connection to battery negative terminal.

Use Scenario: Detecting thermal runaway in power converters by comparing thermistor voltage against fixed thresholds.

IC Role / Device Role / Timing Role: Comparator 1 triggers shutdown when thermistor voltage drops below trip point; Comparator 2 provides hysteresis via feedback.

Use Value: 1 pA input bias avoids thermistor self-heating error; open-drain outputs interface directly with MOSFET gate drivers.

Window Comparator for Sensor Signal

Zero-Crossing Detector for AC Mains

Use Scenario: Validating analog sensor output (e.g., pressure transducer) remains within safe operational bounds.

IC Role / Device Role / Timing Role: One comparator monitors upper limit, the other lower limit; outputs feed OR gate to generate fault flag.

Use Value: 6.5 mV max offset ensures ≤10 mV window accuracy; rail-to-rail inputs accept full 0–5 V sensor swing without attenuation.

Use Scenario: Converting 50/60 Hz AC line voltage into clean digital zero-crossing pulses for TRIAC phase control.

IC Role / Device Role / Timing Role: Compares scaled AC waveform against ground reference to generate synchronized edge-triggered pulses.

Use Value: 2.5 µs response time ensures <1° phase error at 60 Hz; input common-mode range includes ground eliminates need for AC coupling capacitors.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
LM393DR	20× higher supply current (180 µA), bipolar input stage, no ground-sensing capability (V_ICM = V_CC − 1.5 V min)	Not suitable for coin-cell or energy-harvesting systems; requires level-shifting for ground-referenced signals	Select only when legacy compatibility or cost sensitivity outweighs power and input-range requirements
TLV3702IDR	Push-pull output (no external pull-up needed), 1.8–16 V supply, 1.2 µs response time, but 500 nA input bias current	Eliminates pull-up resistors but sacrifices input impedance critical for high-Z sensors	Prefer when board space is constrained and sensor source impedance <100 kΩ

Compared with LM393DR and TLV3702IDR, TS393IDT uniquely balances ultra-low power (9 µA), true ground-sensing inputs, and open-drain flexibility - making it optimal for long-life, single-supply, high-impedance sensing where output logic level translation is required.

Availability

TS393IDT is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial temperature monitoring, and automotive cabin sensor modules requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for TS393IDT 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 microcontrollers, analog ICs, power management devices, and MEMS sensors for industrial, automotive, and consumer markets.

The TS393 belongs to ST's precision analog comparator product line, engineered specifically for ultra-low-power, ground-sensing applications in portable and harsh-environment electronics where supply constraints and signal integrity are critical.

FAQ

What is the maximum allowable supply voltage for TS393IDT?

The absolute maximum supply voltage is 18 V between V_CC+ and V_CC−, but recommended operating range is 2.7 V to 16 V. Operation above 16 V risks exceeding internal junction temperature limits and degrading long-term reliability, even if within absolute ratings.

Can TS393IDT drive an LED directly from its output?

No - the TS393IDT has an open-drain output that can only sink current (up to 20 mA). To drive an LED, connect the anode to a positive supply (≤18 V) and the cathode to the output pin, with a series current-limiting resistor calculated for desired brightness and supply voltage.

Does TS393IDT include built-in hysteresis?

No - TS393IDT has no internal hysteresis. External positive feedback (e.g., resistor from output to non-inverting input) must be added to prevent oscillation when input signals transition slowly near the threshold voltage, especially in noisy environments.

Is TS393IDT suitable for automotive under-hood applications?

TS393IDT is rated for -40°C to +125°C operation and meets industrial specifications, but it is not AEC-Q100 qualified. For under-hood use, ST recommends the automotive-grade TS393IYDT variant, which undergoes additional screening and qualification per AEC-Q100 Rev H and Q003 standards.

TS393IDT Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Series:: -

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: General Purpose

Number of Elements:: 2

Output Type:: CMOS, Open-Drain

Voltage - Supply, Single/Dual (±):: 2.7V ~ 16V, ±1.35V ~ 8V

:: 5mV @ 10V

Voltage - Input Offset (Max):: 1pA @ 5V

Current - Input Bias (Max):: 20mA

Current - Output (Typ):: 25µA

Current - Quiescent (Max):: 71dB CMRR

CMRR, PSRR (Typ):: -

Propagation Delay (Max):: -

Hysteresis:: -40°C ~ 125°C

Operating Temperature:: -

Grade:: -

Qualification:: Surface Mount

:: 8-SOIC

TS393IDT FAQ

1.How can I place an order for TS393IDT through Aetrix?

Please submit a Request for Quotation (RFQ) for TS393IDT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for TS393IDT reliable?

The price and inventory of TS393IDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS393IDT is usually 5 days.

3.What payment methods are accepted for TS393IDT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS393IDT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TS393IDT?

TS393IDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TS393IDT order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for TS393IDT?

For technical support, including TS393IDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS393IDT requirements.

6.How does Aetrix verify that TS393IDT is sourced from the original manufacturer or authorized distributors?

All TS393IDT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TS393IDT meets industry standards.

7.What is the process for return or replacement of TS393IDT?

All TS393IDT units undergo pre-shipment inspection (PSI). If there is an issue with TS393IDT, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The TS393IDT part is unused and in its original packaging.

Return procedure for TS393IDT:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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