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

STMicroelectronics TS3704CDT

Name: TS3704CDT
Brand: STMicroelectronics
SKU: TS3704CDT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TS3704CDT

Manufacturer:: STMicroelectronics

Category:: Comparators

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

Datasheet:: TS3704CDT.pdf

Description:: IC COMPARATOR 4 GEN PUR 14SO

Quantity:: RFQ Add To RFQ list

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Inventory:11,536

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Product details

Overview

TS3704CDT from STMicroelectronics is a micropower quad CMOS voltage comparator with push-pull outputs, 9 μA typical supply current per comparator, 2.7–16 V single-supply operation, 1 pA typical input bias current, and 2 μs typical response time at 5 mV overdrive-used in battery-powered sensor threshold detection and precision level sensing circuits.

For engineers reviewing the TS3704CDT datasheet, TS3704CDT pinout, TS3704CDT application, or TS3704CDT equivalent, key selection criteria include ultra-low quiescent current, rail-to-rail input common-mode range including ground, push-pull output eliminating external pull-ups, and compatibility with legacy LM339 layouts in space-constrained industrial monitoring systems.

Technical Context

The TS3704CDT integrates four independent high-impedance CMOS comparators on a single die, each featuring input bias and offset currents ≤1 pA (typ), enabling direct interfacing with high-impedance sources like photodiodes and piezoelectric sensors without signal degradation.

Its push-pull output stage drives logic-level loads directly-no external pull-up resistor required-while maintaining sub-2 μs propagation delay under 5 mV overdrive, matching bipolar LM339 timing performance despite 20× lower power consumption.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Current	9 μA typ per comparator - enables multi-year operation from coin-cell batteries in portable instrumentation.
Input Bias Current	1 pA typ - preserves signal integrity when sensing from megaohm-range sources (e.g., pH electrodes).
Input Common-Mode Range	0 V to V_CC−1.5 V - supports ground-referenced inputs without level-shifting circuitry.
Response Time	2 μs typ at 5 mV overdrive - suitable for fast edge detection in motor commutation or overvoltage latch circuits.
Output Type	CMOS push-pull - eliminates need for external pull-up resistors, reducing BOM count and PCB area.
Supply Voltage Range	2.7 V to 16 V single supply - interoperable across 3.3 V microcontrollers and 12 V industrial rails.
Input Offset Voltage	5 mV max - ensures reliable switching at small differential thresholds in precision window detectors.

Pinout & Package

TS3704CDT is supplied in a 14-pin SOIC (SO14) plastic micropackage with standard 1.27 mm pitch, JEDEC MS-012 compliant, RoHS-compliant and ECOPACK® certified.

Pin/Terminal	Circuit Role	Design Meaning
1	Inverting Input (Comp A)	Accepts reference or sensed signal for first comparator; supports common-mode down to GND.
2	Non-inverting Input (Comp A)	Accepts variable input (e.g., sensor output); high impedance minimizes loading.
3	Output (Comp A)	CMOS push-pull output - sinks or sources up to 4 mA, compatible with TTL/CMOS logic.
4	Inverting Input (Comp B)	Dedicated input for second comparator; electrically isolated from other channels.
5	Non-inverting Input (Comp B)	Independent high-Z input for dual-threshold or hysteresis configuration.
6	Output (Comp B)	Independent logic-level output; no shared drive path with other comparators.
7	V_CC− (GND)	Negative supply terminal - serves as system ground reference for all four comparators.
8	Output (Comp C)	Third comparator output; fully buffered and decoupled from internal supply nodes.
9	Non-inverting Input (Comp C)	High-impedance input for third channel; supports rail-to-rail common-mode swing.
10	Inverting Input (Comp C)	Reference input for third comparator; matched offset and bias with other channels.
11	Output (Comp D)	Fourth independent output; capable of driving capacitive loads up to 50 pF within spec.
12	Non-inverting Input (Comp D)	Final comparator input; identical electrical characteristics to pins 1–2 and 4–5.
13	Inverting Input (Comp D)	Final reference input; maintains 1 pA bias current and 5 mV offset across temperature.
14	V_CC+	Positive supply rail - powers all four comparators; accepts 2.7–16 V with 75–92 dB SVR.

Key Features

Feature	Design Value
Ultra-low quiescent current	9 μA/comparator enables >10-year battery life in wireless sensor nodes using CR2032 cells.
Rail-to-rail input capability	Input common-mode range includes GND and extends to V_CC−1.5 V - simplifies interface with unipolar sensors.
Push-pull CMOS output	Eliminates external pull-up resistors, saving 4–8 mm² PCB area and reducing component count in quad-detector designs.
High ESD robustness	1.5 kV charged-device-model (CDM) rating - improves manufacturing yield and field reliability in handling-sensitive environments.
Pin-compatible upgrade path	Direct replacement for LM339 in existing layouts, retaining same footprint while cutting total supply current by 95%.

Applications

Battery-Powered Sensor Monitoring

Industrial Threshold Detection

Use Scenario: Monitoring voltage levels from thermistors, photodiodes, or strain gauges in remote IoT nodes powered by primary lithium cells.

IC Role / Device Role / Timing Role: Quad comparator performs simultaneous low-battery warning, overtemperature flag, light-on/off decision, and fault latching.

Use Value: 9 μA total quiescent draw (36 μA for all four channels) extends CR2032 battery life beyond 5 years in sleep-dominated duty cycles.

Use Scenario: Detecting out-of-tolerance conditions in PLC analog input modules (e.g., 4–20 mA loop break, overvoltage, undervoltage, reverse polarity).

IC Role / Device Role / Timing Role: Four independent comparators implement redundant safety thresholds with independent hysteresis networks.

Use Value: 1 pA input bias avoids measurement error from leakage across high-value divider resistors (≥1 MΩ) used in 24 V industrial sensing.

Power Supply Sequencing Control

Motor Commutation Feedback

Use Scenario: Validating correct ramp-up order of multiple DC/DC rails (e.g., 1.2 V core, 3.3 V I/O, 5 V analog) before enabling downstream logic.

IC Role / Device Role / Timing Role: Each comparator monitors one rail against a precision reference; outputs feed AND gate to enable master enable signal.

Use Value: Push-pull outputs drive logic gates directly-no pull-up needed-reducing sequencing board complexity and improving noise immunity.

Use Scenario: Converting back-EMF zero-crossing signals from brushless DC motor windings into digital commutation timing edges.

IC Role / Device Role / Timing Role: High-speed comparator detects rapid voltage transitions with <2 μs propagation delay and minimal jitter.

Use Value: 2 μs response at 5 mV overdrive ensures accurate timing even with low-amplitude back-EMF signals at low RPM.

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 stage; 2 mA supply current per comparator; open-collector output requiring pull-up.	Higher power dissipation limits use in energy-harvesting systems; slower response at low overdrive.	Select when legacy compatibility or higher drive strength (>16 mA sink) is required, not for ultra-low-power designs.
TLV3704IDR	Lower V_CC min (1.8 V); 1 μA supply current; rail-to-rail input/output; smaller SOT-23-14 package.	Supports 1.8 V logic domains and tighter space constraints; lacks extended temperature grade (-55°C to +125°C) of TS3704CDT.	Select for modern ultra-low-voltage systems where -40°C to +125°C operation is not mandatory.

Compared with LM339DT and TLV3704IDR, TS3704CDT uniquely balances ultra-low 9 μA quiescent current, full -40°C to +125°C operation, and SO14 pinout compatibility-making it optimal for industrial battery-backed monitoring where longevity, temperature resilience, and drop-in layout reuse are jointly critical.

Availability

TS3704CDT is available at Aetrix Electronics and suitable for battery-powered sensor nodes, industrial PLC analog input protection, and motor control feedback circuits requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TS3704CDT 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, MCU, power, and MEMS products for industrial, automotive, and consumer markets.

The TS3704 belongs to ST's precision analog comparators product line, engineered specifically for ultra-low-power, high-input-impedance sensing applications in harsh environments where long-term stability and wide supply flexibility are essential.

FAQ

What is the maximum allowable supply voltage for TS3704CDT?

The absolute maximum supply voltage (V_CC+) is 18 V, but the recommended operating range is 2.7 V to 16 V per the datasheet. Operation above 16 V risks exceeding safe junction temperature and violates specified electrical characteristics; sustained use beyond 16 V voids parametric guarantees and may cause irreversible damage.

Does TS3704CDT support dual-supply operation?

Yes - TS3704CDT operates with dual supplies from ±1.35 V to ±8 V. Pin 7 is designated V_CC− (negative rail) and pin 14 is V_CC+ (positive rail). The input common-mode range extends to within 1.5 V of either rail, enabling symmetric operation in bipolar signal conditioning circuits such as audio level detectors or op-amp saturation monitors.

Can TS3704CDT drive a 10 kΩ load directly?

Yes - its CMOS push-pull output can source or sink up to 4 mA while maintaining VOL ≤ 575 mV and VOH ≥ 1.8 V (at 3 V supply). A 10 kΩ load draws only 300 μA at 3 V, well within specification. Output voltage swing remains rail-aligned, ensuring clean logic-level transitions without external components.

Is TS3704CDT qualified for automotive applications?

No - TS3704CDT is rated for industrial temperature range (-40°C to +125°C) but is not AEC-Q100 qualified. ST offers the TS3704IPT variant (same specs, TSSOP14) with automotive qualification under TS3704I part numbering, which includes additional stress testing and PPAP documentation required for automotive ECUs and body control modules.

TS3704CDT 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:: General Purpose

Number of Elements:: 4

Output Type:: CMOS, Push-Pull

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):: 80dB CMRR

CMRR, PSRR (Typ):: -

Propagation Delay (Max):: -

Hysteresis:: 0°C ~ 70°C

Operating Temperature:: -

Grade:: -

Qualification:: Surface Mount

:: 14-SO

TS3704CDT FAQ

1.How can I place an order for TS3704CDT through Aetrix?

Please submit a Request for Quotation (RFQ) for TS3704CDT 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 TS3704CDT reliable?

The price and inventory of TS3704CDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS3704CDT is usually 5 days.

3.What payment methods are accepted for TS3704CDT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS3704CDT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TS3704CDT?

TS3704CDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TS3704CDT 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 TS3704CDT?

For technical support, including TS3704CDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS3704CDT requirements.

6.How does Aetrix verify that TS3704CDT is sourced from the original manufacturer or authorized distributors?

All TS3704CDT 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 TS3704CDT meets industry standards.

7.What is the process for return or replacement of TS3704CDT?

All TS3704CDT units undergo pre-shipment inspection (PSI). If there is an issue with TS3704CDT, 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 TS3704CDT part is unused and in its original packaging.

Return procedure for TS3704CDT:

1.Submit a request within 90 days.

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

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