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

STMicroelectronics TS374CDT

Name: TS374CDT
Brand: STMicroelectronics
SKU: TS374CDT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TS374CDT

Manufacturer:: STMicroelectronics

Category:: Comparators

Package:: 14-SOIC (0.154", 3.90mm Width)

Datasheet:: TS374CDT.pdf

Description:: IC COMPARATOR 4 DIFF 14SO

Quantity:: RFQ Add To RFQ list

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Product details

Overview

TS374CDT from STMicroelectronics is a quad CMOS voltage comparator with rail-to-rail input (including GND) and TTL/MOS/CMOS-compatible outputs, operating from 3V to 16V single supply or ±1.5V to ±8V dual supply, featuring 0.1mA per comparator supply current, 1pA typical input bias current, and 200ns typical response time. It is used in precision level detection and window comparators in battery-powered instrumentation.

For engineers reviewing the TS374CDT datasheet, TS374CDT pinout, TS374CDT application, or TS374CDT equivalent, key selection considerations include input offset voltage (≤12mV), common-mode range (0 to V_CC+−2.5V), output saturation voltage (≤700mV at 4mA), low-power operation (250µA max ICC per comparator), and SO14 package thermal performance (R_thJA = 150°C/W).

Technical Context

The TS374CDT integrates four independent comparators fabricated using ST's silicon-gate LinCMOS process, enabling ultra-low input bias current (1pA typ) and high input impedance (10¹²Ω typ). Its input stage supports common-mode voltages down to ground, eliminating need for level-shifting in single-supply systems.

Each comparator delivers fast switching (200ns typ for TTL-level steps) with low output saturation (150mV typ at light load), and drives TTL, MOS, and CMOS logic directly without pull-up resistors. Absolute maximum ratings include ±18V differential input and 18V supply, with operational V_CC+ from 3V to 16V.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	3V to 16V single supply or ±1.5V to ±8V dual supply - enables direct use in 5V, 12V, and low-voltage battery systems without regulation.
Input Bias Current	1pA typical - minimizes loading on high-impedance sensor nodes and RC timing networks.
Input Offset Voltage	12mV max - ensures reliable detection of small signal thresholds in precision analog monitoring.
Response Time	200ns typical (TTL-level step) - supports real-time overvoltage/undervoltage fault detection in power supplies.
Output Saturation Voltage	700mV max at 4mA sink - guarantees valid LOW logic level when driving standard TTL inputs.
Common-Mode Input Range	0V to V_CC+−2.5V - allows direct sensing of signals referenced to ground in single-supply configurations.
Supply Current per Comparator	250µA max - enables four-channel comparison in ultra-low-power portable devices.

Pinout & Package

TS374CDT is housed in a 14-pin SO (Small Outline) plastic micropackage (SO14), measuring 8.55–8.75mm × 5.8–6.2mm, with 1.27mm pitch, gull-wing leads, and R_thJA = 150°C/W.

Pin/Terminal	Circuit Role	Design Meaning
1	Inverting Input, Comp 1	Accepts reference or feedback signal for first comparator; supports rail-to-rail common-mode range.
2	Non-inverting Input, Comp 1	Accepts sensed signal for first comparator; matched input impedance minimizes offset drift.
3	Output, Comp 1	Open-drain compatible output; sinks up to 45mA, saturates ≤700mV at 4mA load.
4	V_CC− (GND)	Ground reference for dual supply or negative rail; required for proper input common-mode operation.
5	Inverting Input, Comp 2	Dedicated input for second comparator; electrically isolated from other channels.
6	Non-inverting Input, Comp 2	Independent sensing node for second comparator; identical electrical specs to Pin 2.
7	Output, Comp 2	Active-low output; compatible with TTL, MOS, and CMOS logic families without external pull-ups.
8	V_CC+	Positive supply rail; accepts 3–16V; powers all four comparators and internal bias circuitry.
9	Inverting Input, Comp 3	Third comparator inverting input; shares same LinCMOS input structure as Pins 1 and 5.
10	Non-inverting Input, Comp 3	Third comparator non-inverting input; supports same common-mode range and bias current.
11	Output, Comp 3	Third independent output; fully specified for speed, drive strength, and saturation voltage.
12	Inverting Input, Comp 4	Fourth comparator inverting input; validated for 1pA bias current and rail-to-rail operation.
13	Non-inverting Input, Comp 4	Fourth comparator non-inverting input; matches input offset and common-mode specs of other channels.
14	Output, Comp 4	Final output channel; functionally identical to Pins 3, 7, and 11; supports parallel or cascaded use.

Key Features

Feature	Design Value
Rail-to-rail input common-mode range including GND	Enables direct interface with ground-referenced sensors and ADC references without level-shifting circuitry.
1pA typical input bias current	Preserves accuracy in high-impedance voltage dividers and piezoelectric transducer interfaces.
TTL/MOS/CMOS-compatible outputs	Eliminates need for external pull-up resistors when interfacing with legacy or mixed-logic systems.
200ns typical propagation delay	Supports sub-microsecond fault response in overcurrent and overtemperature protection circuits.
0.1mA per comparator supply current	Allows four-channel threshold detection in coin-cell-powered IoT endpoints with multi-year battery life.

Applications

Battery Voltage Monitor

Power Supply Sequencing

Use Scenario: Detecting low-battery condition in handheld medical devices using a resistive divider across Li-ion cell.

IC Role / Device Role / Timing Role: Quad comparator configured as hysteresis window detector with separate under-voltage and over-voltage thresholds.

Use Value: 1pA input bias prevents divider current error; 200ns response ensures immediate shutdown before brownout damage occurs.

Use Scenario: Enforcing strict power-up order across multiple rails (e.g., 1.8V, 3.3V, 5V) in FPGA-based systems.

IC Role / Device Role / Timing Role: Four independent comparators monitor each rail against precision references to generate enable signals.

Use Value: Rail-to-rail input allows direct sensing without op-amp buffers; low ICC reduces sequencing circuit overhead.

Industrial Sensor Threshold Detection

Optical Smoke Detector Signal Conditioning

Use Scenario: Converting analog output from a 4–20mA pressure transducer into digital alarm states.

IC Role / Device Role / Timing Role: Two comparators implement high/low limit detection; third monitors loop integrity.

Use Value: 12mV max V_IO ensures <±0.5% threshold accuracy over temperature; SO14 package suits compact DIN-rail modules.

Use Scenario: Comparing photodiode current-derived voltage against adjustable smoke density thresholds.

IC Role / Device Role / Timing Role: One comparator triggers alarm on rapid signal rise; another validates baseline stability.

Use Value: 1pA I_IB avoids leakage-induced false alarms; 700mV VOL guarantees clean logic transition to microcontroller interrupt pin.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
LM339DT	Bipolar input (250nA I_IB), higher ICC (0.8mA), slower (1.3µs), no rail-to-rail input	Requires level-shifting for ground-sensed signals; unsuitable for ultra-low-power or high-impedance nodes	Choose LM339DT only if cost is primary constraint and input impedance >1MΩ is acceptable.
TLV3704IDR	CMOS input (1pA I_IB), lower ICC (80µA), rail-to-rail input/output, but max V_CC = 16V only	Superior low-power and precision, but lacks dual-supply flexibility (±1.5V to ±8V) of TS374CDT	Prefer TLV3704IDR for battery-only designs needing lowest ICC; retain TS374CDT for dual-supply industrial systems.

Compared with LM339DT and TLV3704IDR, TS374CDT uniquely balances ultra-low I_IB, dual-supply support, and TTL-compatible outputs - making it optimal for mixed-rail industrial control where ground-referenced sensing and legacy logic interfacing coexist.

Availability

TS374CDT is available at Aetrix Electronics and suitable for battery voltage monitoring, power supply sequencing, industrial sensor threshold detection, and optical smoke detector signal conditioning requiring stable component supply across extended temperature ranges (0°C to +70°C).

Supply support for TS374CDT 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, designing and manufacturing analog, MCU, power, and sensor solutions for automotive, industrial, and consumer markets.

The TS374 series belongs to ST's precision analog comparator product line, engineered specifically for low-power, high-input-impedance applications in instrumentation, energy metering, and safety-critical monitoring systems.

FAQ

Can TS374CDT operate from a single 3.3V supply?

Yes. TS374CDT supports single-supply operation from 3V to 16V. At 3.3V, its input common-mode range extends from 0V to 0.8V (V_CC+−2.5V), and output saturation remains ≤700mV at 4mA, ensuring compatibility with 3.3V logic families when used with appropriate pull-up configuration.

Does TS374CDT require external pull-up resistors on its outputs?

No. TS374CDT outputs are fully compatible with TTL, MOS, and CMOS logic without external pull-ups due to their active pull-down architecture and guaranteed low saturation voltage (≤700mV at 4mA). Pull-ups are optional only when interfacing with open-collector systems or requiring wired-OR functionality.

What is the maximum junction temperature and thermal resistance for TS374CDT in SO14 package?

The TS374CDT SO14 package has a maximum junction temperature of +150°C and a thermal resistance R_thJA of 150°C/W at T_amb = +25°C. This allows continuous operation at full 250µA per comparator (1mA total) with ≤75°C junction rise above ambient under standard PCB layout conditions.

How does TS374CDT handle input overvoltage beyond absolute maximum ratings?

TS374CDT includes ESD protection diodes on inputs rated for 50mA forward current. Inputs tolerate differential voltages up to ±18V and common-mode voltages up to 18V, but sustained overvoltage beyond these limits risks permanent damage. External clamping or series resistors are recommended for transient-prone environments like industrial I/O.

TS374CDT Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: 14-SOIC (0.154", 3.90mm Width)

Series:: -

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: Differential

Number of Elements:: 4

Output Type:: CMOS, MOS, Open-Drain, TTL

Voltage - Supply, Single/Dual (±):: 3V ~ 16V, ±1.5V ~ 8V

:: 10mV @ 5V

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

Current - Input Bias (Max):: 20mA

Current - Output (Typ):: 250µA

Current - Quiescent (Max):: -

CMRR, PSRR (Typ):: -

Propagation Delay (Max):: -

Hysteresis:: 0°C ~ 70°C

Operating Temperature:: -

Grade:: -

Qualification:: Surface Mount

:: 14-SO

TS374CDT FAQ

1.How can I place an order for TS374CDT through Aetrix?

Please submit a Request for Quotation (RFQ) for TS374CDT 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 TS374CDT reliable?

The price and inventory of TS374CDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS374CDT is usually 5 days.

3.What payment methods are accepted for TS374CDT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS374CDT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TS374CDT?

TS374CDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TS374CDT 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 TS374CDT?

For technical support, including TS374CDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS374CDT requirements.

6.How does Aetrix verify that TS374CDT is sourced from the original manufacturer or authorized distributors?

All TS374CDT 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 TS374CDT meets industry standards.

7.What is the process for return or replacement of TS374CDT?

All TS374CDT units undergo pre-shipment inspection (PSI). If there is an issue with TS374CDT, 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 TS374CDT part is unused and in its original packaging.

Return procedure for TS374CDT:

1.Submit a request within 90 days.

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

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