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

STMicroelectronics TS3704ID

Name: TS3704ID
Brand: STMicroelectronics
SKU: TS3704ID
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TS3704ID

Manufacturer:: STMicroelectronics

Category:: Comparators

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

Datasheet:: TS3704ID.pdf

Description:: IC COMPARATOR 4 GEN PUR 14SO

Quantity:: RFQ Add To RFQ list

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Product details

Overview

TS3704ID 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 monitoring circuits requiring rail-to-rail input and low-quiescent-current decision logic.

For engineers reviewing the TS3704ID datasheet, TS3704ID pinout, TS3704ID application, or TS3704ID equivalent, key selection criteria include input offset voltage (≤6.5 mV), common-mode range including ground, output drive capability without pull-up resistors, and compatibility with legacy LM339-based designs where space and power are constrained.

Technical Context

The TS3704ID implements four independent high-impedance CMOS comparators on a single die, each featuring rail-to-rail input stage with common-mode range extending to GND and V_CC−1.5 V, and a push-pull output stage eliminating external pull-up components. Its architecture enables direct interfacing with TTL/CMOS logic while maintaining micropower operation.

Designed for low-noise, low-drift sensing applications, it delivers 80 dB common-mode rejection and 92 dB supply voltage rejection at 5 V, with input offset current and bias current both typ. 1 pA-critical for high-impedance source interfaces such as photodiode or thermistor signal conditioning.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	2.7 V to 16 V single supply - supports wide-input industrial and portable systems without level-shifting.
Quiescent Current	9 μA per comparator typ. - enables multi-comparator monitoring in energy-constrained devices like smoke detectors or IoT nodes.
Input Bias Current	1 pA typ. - preserves signal integrity when driving from megaohm-level sensors (e.g., pH electrodes, capacitive touch).
Response Time	2 μs typ. at 5 mV overdrive - sufficient for slow-to-moderate analog threshold detection (e.g., battery voltage supervision).
Input Common-Mode Range	0 V to V_CC−1.5 V - allows direct GND-referenced input sensing without biasing networks.
Output Type	CMOS push-pull - drives logic inputs directly; eliminates pull-up resistor, saving PCB area and BOM cost.
Input Offset Voltage	6.5 mV max. - sets minimum detectable differential for precision window or zero-crossing detection.

Pinout & Package

TS3704ID is supplied in SO14 (Small Outline 14-pin) plastic micropackage, compliant with JEDEC MS-012, 1.27 mm pitch, body size 8.75 × 6.2 mm, lead-free per ECOPACK®.

Pin/Terminal	Circuit Role	Design Meaning
1	Comparator 1 Inverting Input	Accepts reference or sensed signal; high-Z node sensitive to leakage and noise coupling.
2	Comparator 1 Non-inverting Input	Accepts variable input; common-mode range includes GND for direct sensor connection.
3	Comparator 1 Output	CMOS push-pull output; sinks/sours ±4 mA; compatible with 3.3 V/5 V logic families.
4	Comparator 2 Inverting Input	Second independent threshold input; electrically isolated from other comparators.
5	Comparator 2 Non-inverting Input	Second variable input channel; identical electrical specs to Pin 2.
6	Comparator 2 Output	Dedicated output for second comparator; no internal loading between outputs.
7	V_CC− (GND)	Ground reference for all comparators; must be low-impedance return path for stable operation.
8	Comparator 3 Output	Third independent CMOS output; shares V_CC− but no internal crosstalk.
9	Comparator 3 Non-inverting Input	Third input channel; supports simultaneous multi-threshold evaluation (e.g., under/over-voltage windows).
10	Comparator 3 Inverting Input	Third reference input; matched offset and bias performance across all four channels.
11	Comparator 4 Output	Fourth CMOS output; fully decoupled; enables four independent decision paths in one package.
12	Comparator 4 Non-inverting Input	Fourth variable input; identical AC/DC specs to Pins 2 and 5 and 9.
13	Comparator 4 Inverting Input	Fourth reference input; supports full quad-window or sequential state detection.
14	V_CC+	Positive supply rail; powers all four comparators; accepts 2.7–16 V with low PSRR dependency.

Key Features

Feature	Design Value
Push-pull CMOS output	Eliminates need for external pull-up resistors, reducing component count and board space in multi-comparator layouts.
1 pA typical input bias current	Enables accurate DC-coupled sensing from ultra-high-impedance sources without significant error voltage.
Rail-to-rail input common-mode range including GND	Supports direct interface with grounded sensors (e.g., thermistors, RTDs) without level-shifting circuitry.
2.7–16 V single-supply operation	Operates across battery (3.3 V Li-ion), industrial (12 V), and legacy (5 V) rails without redesign.
Pin- and functionally compatible with LM339	Allows drop-in replacement in existing bipolar comparator designs while cutting quiescent current by 20×.

Applications

Battery Voltage Supervisor

Sensor Threshold Detector

Use Scenario: Monitoring lithium-ion cell voltage during charging/discharging to trigger cutoff or alert at 2.8 V undervoltage and 4.3 V overvoltage thresholds.

IC Role / Device Role / Timing Role: Quad comparator configured as dual window detector (Pins 1–3 and 4–6) plus status flag (Pins 9–11 and 12–14).

Use Value: Micropower operation extends standby life; push-pull outputs drive MCU GPIOs directly without external components.

Use Scenario: Detecting temperature crossing of preset points using NTC thermistor divider network in HVAC control unit.

IC Role / Device Role / Timing Role: Four independent comparators compare thermistor voltage against four precision references for multi-zone thermal staging.

Use Value: 1 pA input bias avoids thermistor self-heating errors; rail-to-rail input accommodates full divider swing from GND to V_CC.

Power Sequencing Controller

LED Dimming Threshold Manager

Use Scenario: Validating correct ramp-up order of multiple DC/DC converter outputs (e.g., 1.2 V core before 3.3 V I/O) in FPGA power management.

IC Role / Device Role / Timing Role: Each comparator monitors one rail's voltage and asserts enable signals only after threshold is met and held.

Use Value: Low ICC ensures sequencing logic draws negligible current during idle; fast 2 μs response prevents false triggers during transient events.

Use Scenario: Enabling PWM dimming stages for architectural LED strips based on ambient light level measured by photodiode amplifier.

IC Role / Device Role / Timing Role: One comparator detects ambient threshold; others manage hysteresis and step-change latching for smooth brightness transitions.

Use Value: Ultra-low input current prevents photodiode leakage from skewing detection point; CMOS outputs interface directly with microcontroller interrupt pins.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
LM339DR	Bipolar input; 2 mA supply current per comparator; open-collector output requires pull-up resistor.	Higher power consumption limits use in battery systems; slower response (~1.3 μs) but better noise immunity in noisy environments.	Select when legacy design reuse or EMI robustness outweighs quiescent current savings.
TLV3704IPW	Lower V_CC min (1.8 V); 1 μA supply current; rail-to-rail output swing; same 1 pA input bias.	Supports newer low-voltage MCUs (1.8 V/2.5 V); superior for sub-3 V battery operation but not pin-compatible.	Select for next-gen ultra-low-voltage designs where board layout change is acceptable.

Compared with LM339DR and TLV3704IPW, TS3704ID uniquely balances pin compatibility with LM339, micropower efficiency (9 μA), and push-pull simplicity-making it optimal for upgrading existing 5 V/12 V systems without layout revision while cutting system standby current.

Availability

TS3704ID is available at Aetrix Electronics and suitable for battery voltage supervision, sensor threshold detection, power sequencing control, and LED dimming threshold management requiring stable component supply across industrial, medical, and consumer electronics programs.

Supply support for TS3704ID 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, microcontroller, power, and sensor solutions for automotive, industrial, and consumer markets.

The TS3704 belongs to ST's precision analog comparators product line, engineered specifically for low-power, high-impedance sensing applications where supply current, input leakage, and output drive simplicity are critical system constraints.

FAQ

What is the maximum operating temperature range for TS3704ID?

TS3704ID is rated for −40 °C to +125 °C free-air operating temperature, matching the TS3704I grade. This extended range supports deployment in automotive engine compartments, industrial motor drives, and outdoor environmental sensors without derating.

Can TS3704ID operate from a 3.3 V supply?

Yes-TS3704ID functions across 2.7 V to 16 V single supply, making 3.3 V fully supported. At 3.3 V, VOH is ≥1.8 V and VOL ≤575 mV with 4 mA load, ensuring reliable interfacing with 3.3 V logic families such as ARM Cortex-M GPIOs.

Does TS3704ID require external pull-up resistors on its outputs?

No-TS3704ID features true CMOS push-pull outputs capable of sourcing and sinking up to ±4 mA. Unlike open-collector comparators (e.g., LM339), it drives logic-high and logic-low states actively, eliminating external pull-up resistors and associated board space and BOM cost.

How does TS3704ID's input offset voltage affect precision sensing?

With a maximum input offset voltage of 6.5 mV at 25 °C, TS3704ID introduces ≤±3.25 mV uncertainty in threshold setting. For a 10 kΩ/10 kΩ resistor divider on a 5 V rail, this corresponds to ~13 mV total error at the input node-acceptable for non-critical voltage monitoring but insufficient for sub-millivolt sensor discrimination.

TS3704ID Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

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

Series:: -

Packaging:: Tube

Product Status:: Obsolete

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

TS3704ID FAQ

1.How can I place an order for TS3704ID through Aetrix?

Please submit a Request for Quotation (RFQ) for TS3704ID 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 TS3704ID reliable?

The price and inventory of TS3704ID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS3704ID is usually 5 days.

3.What payment methods are accepted for TS3704ID?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS3704ID transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TS3704ID?

TS3704ID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TS3704ID 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 TS3704ID?

For technical support, including TS3704ID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS3704ID requirements.

6.How does Aetrix verify that TS3704ID is sourced from the original manufacturer or authorized distributors?

All TS3704ID 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 TS3704ID meets industry standards.

7.What is the process for return or replacement of TS3704ID?

All TS3704ID units undergo pre-shipment inspection (PSI). If there is an issue with TS3704ID, 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 TS3704ID part is unused and in its original packaging.

Return procedure for TS3704ID:

1.Submit a request within 90 days.

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

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