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

STMicroelectronics TS3704IDT

Name: TS3704IDT
Brand: STMicroelectronics
SKU: TS3704IDT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TS3704IDT

Manufacturer:: STMicroelectronics

Category:: Comparators

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

Datasheet:: TS3704IDT.pdf

Description:: IC COMPARATOR 4 GEN PUR 14SO

Quantity:: RFQ Add To RFQ list

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Product details

Overview

TS3704IDT 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. It replaces bipolar LM339 in battery-powered sensor monitoring and low-power industrial control interfaces.

For engineers reviewing the TS3704IDT datasheet, TS3704IDT pinout, TS3704IDT application, or TS3704IDT 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 PCB layouts.

Technical Context

The TS3704IDT integrates four independent high-impedance (10¹² Ω typ) comparators with CMOS input stages and complementary push-pull output drivers. Its input stage supports common-mode voltages from GND to V_CC − 1.5 V, enabling direct sensing of ground-referenced signals without level-shifting.

Each comparator delivers TTL-compatible logic levels: VOL ≤ 400 mV at 4 mA sink, VOH ≥ 4.3 V at 4 mA source (V_CC = 5 V). Supply rejection exceeds 92 dB and common-mode rejection is 80 dB, ensuring stable operation under noisy rail conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Current	9 μA typ per comparator - enables multi-year operation on coin-cell batteries in portable sensors.
Input Bias Current	1 pA typ - preserves signal integrity in high-impedance sensor bridges and photodiode front-ends.
Response Time	2 μs typ at 5 mV overdrive - supports fast threshold detection in motor stall or overvoltage protection circuits.
Input Common-Mode Range	0 V to V_CC − 1.5 V - allows direct comparison of signals referenced to system ground without biasing networks.
Output Type	CMOS push-pull - eliminates need for external pull-up resistors, saving board space and reducing BOM count.
Supply Voltage Range	2.7 V to 16 V single supply - interoperable across 3.3 V microcontrollers, 5 V logic, and 12 V industrial rails.
Input Offset Voltage	5 mV max - ensures reliable switching within ±10 mV hysteresis windows for precision window comparators.

Pinout & Package

TS3704IDT is supplied in a 14-lead SOIC (SO14) package with standard JEDEC MS-012AC footprint and 1.27 mm pitch. Pin 1 is marked by a beveled corner or dot; device orientation follows top-view pin numbering.

Pin/Terminal	Circuit Role	Design Meaning
1	Comparator 1 Inverting Input	Accepts reference or feedback signal for first comparator; high-impedance node sensitive to leakage.
2	Comparator 1 Non-inverting Input	Receives monitored signal (e.g., sensor output); supports GND-referenced inputs.
3	Comparator 1 Output	CMOS push-pull output drives TTL/CMOS loads directly; no pull-up required.
4	Comparator 2 Inverting Input	Second comparator's inverting input; electrically isolated from other channels.
5	Comparator 2 Non-inverting Input	Second comparator's non-inverting input; shares same input specs as Pin 2.
6	Comparator 2 Output	Independent push-pull output; compatible with 3.3 V or 5 V logic families.
7	GND	Ground reference for all comparators and output stages; must be low-impedance path.
8	V_CC	Positive supply rail; decoupling capacitor (100 nF) required near this pin.
9	Comparator 3 Non-inverting Input	Third comparator's active-high input; identical electrical characteristics to Pins 2 and 5.
10	Comparator 3 Inverting Input	Third comparator's active-low input; supports differential or single-ended configurations.
11	Comparator 3 Output	Third channel output; capable of sourcing/sinking 4 mA while maintaining logic levels.
12	Comparator 4 Non-inverting Input	Fourth comparator input; enables quad-threshold detection in power sequencing monitors.
13	Comparator 4 Inverting Input	Fourth comparator reference input; used for window or over/under-voltage detection.
14	Comparator 4 Output	Final output; supports wired-OR via external diodes if needed, though not required.

Key Features

Feature	Design Value
Quad independent comparators	Four fully isolated channels in one SO14 package - reduces component count vs. discrete duals or singles.
Push-pull CMOS outputs	Eliminates external pull-up resistors - saves 4× 10 kΩ resistors and associated layout area per device.
1 pA input bias current	Enables use with >1 MΩ source impedances without significant offset error - critical for thermistor or RTD interfaces.
2.7–16 V supply range	Single bill-of-material supports 3.3 V, 5 V, and 12 V systems - simplifies inventory and design reuse.
−40°C to +125°C operation	Qualified for extended industrial temperature range - suitable for under-hood automotive or factory-floor applications.

Applications

Battery Voltage Monitor

Sensor Threshold Detector

Use Scenario: Monitoring Li-ion cell voltage during charging/discharging cycles in portable medical devices.

IC Role / Device Role / Timing Role: Quad comparator implements under-voltage lockout, over-voltage protection, full-charge detection, and thermal fault windowing.

Use Value: 9 μA total quiescent current extends standby life to >5 years on CR2032; push-pull outputs drive MCU GPIOs directly.

Use Scenario: Detecting smoke detector ionization chamber current thresholds in residential fire alarms.

IC Role / Device Role / Timing Role: One comparator senses chamber current drop; others implement hysteresis, self-test, and alarm latching.

Use Value: 1 pA input bias prevents loading of picoamp-level chamber currents; rail-to-rail input captures full dynamic range.

Power Sequencing Controller

Industrial Level Shifter

Use Scenario: Validating correct ramp-up order of multiple DC/DC converter rails in FPGA-based test equipment.

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

Use Value: 2 μs response ensures timing-critical sequencing within 10 μs windows; wide supply range accommodates 1.2 V to 12 V rails.

Use Scenario: Converting 0–2.5 V analog sensor outputs to 0–5 V logic levels for PLC analog input modules.

IC Role / Device Role / Timing Role: Comparator acts as precision level translator using resistor-divider references and hysteresis.

Use Value: Input common-mode range includes GND allows direct connection of unipolar sensors; 5 mV offset ensures <1% translation error.

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, 2 mA supply current per comparator, open-collector output requiring pull-up.	Higher power consumption limits use in battery systems; slower response (~1.3 μs min) but higher drive strength.	Select when driving LEDs or relays directly, or when cost sensitivity outweighs power savings.
TLV3704IDR	CMOS input, 1.8–16 V supply, 800 nA supply current, rail-to-rail output swing.	Lower power than TS3704IDT but reduced output drive (100 μA); not suited for heavy capacitive loads.	Select for ultra-low-power IoT endpoints where load is high-impedance MCU input only.

Compared with LM339DT and TLV3704IDR, TS3704IDT uniquely balances micropower operation (9 μA), robust output drive (4 mA), and full GND-referenced input range - making it optimal for industrial sensor nodes requiring long life and direct logic interfacing.

Availability

TS3704IDT is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial sensor interfaces, and power management subsystems requiring stable component supply across extended temperature ranges.

Supply support for TS3704IDT 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, microcontroller, power, and MEMS products for industrial, automotive, and consumer markets.

The TS3704 belongs to ST's precision analog comparator family, engineered specifically for low-power industrial and portable applications where supply current, input impedance, and input voltage range are critical constraints.

FAQ

What is the maximum recommended operating voltage for TS3704IDT?

The absolute maximum supply voltage is 18 V, but the specified operating range is 2.7 V to 16 V. Operation above 16 V voids guaranteed performance per Table 2 and risks exceeding internal junction temperature limits even at room ambient.

Can TS3704IDT drive a 10 kΩ load directly?

Yes - its push-pull CMOS output can source or sink up to 4 mA while maintaining VOH ≥ 4.3 V and VOL ≤ 400 mV (at V_CC = 5 V). A 10 kΩ load draws only 0.5 mA, well within specification and requiring no external components.

Does TS3704IDT require external hysteresis for noise immunity?

No - hysteresis is not built-in, but the device's 1 pA input bias current and high input impedance make it highly compatible with externally added positive feedback networks. Typical hysteresis values (e.g., 10 mV) are easily implemented using two resistors without degrading accuracy.

Is TS3704IDT pin-compatible with LM339 in SO14 packages?

Yes - TS3704IDT uses identical SO14 pinout and functional mapping as LM339, enabling drop-in replacement on existing PCBs. However, output behavior differs: TS3704IDT has push-pull outputs versus LM339's open-collector, so pull-up resistors must be removed during migration.

TS3704IDT 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:: -40°C ~ 125°C

Operating Temperature:: -

Grade:: -

Qualification:: Surface Mount

:: 14-SO

TS3704IDT FAQ

1.How can I place an order for TS3704IDT through Aetrix?

Please submit a Request for Quotation (RFQ) for TS3704IDT 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 TS3704IDT reliable?

The price and inventory of TS3704IDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS3704IDT is usually 5 days.

3.What payment methods are accepted for TS3704IDT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS3704IDT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TS3704IDT?

TS3704IDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TS3704IDT 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 TS3704IDT?

For technical support, including TS3704IDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS3704IDT requirements.

6.How does Aetrix verify that TS3704IDT is sourced from the original manufacturer or authorized distributors?

All TS3704IDT 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 TS3704IDT meets industry standards.

7.What is the process for return or replacement of TS3704IDT?

All TS3704IDT units undergo pre-shipment inspection (PSI). If there is an issue with TS3704IDT, 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 TS3704IDT part is unused and in its original packaging.

Return procedure for TS3704IDT:

1.Submit a request within 90 days.

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

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