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

STMicroelectronics TS3704CN

Name: TS3704CN
Brand: STMicroelectronics
SKU: TS3704CN
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TS3704CN

Manufacturer:: STMicroelectronics

Category:: Comparators

Package:: 14-DIP (0.300", 7.62mm)

Datasheet:: TS3704CN.pdf

Description:: IC COMPARATOR 4 GEN PUR 14DIP

Quantity:: RFQ Add To RFQ list

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Inventory:4,458

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Product details

Overview

TS3704CN 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 low-power sensor monitoring and battery-powered threshold detection circuits.

For engineers reviewing the TS3704CN datasheet, TS3704CN pinout, TS3704CN application, or TS3704CN 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 TS3704CN integrates four independent high-impedance (10¹² Ω typ) comparators with CMOS input stages and complementary push-pull output drivers. Each comparator supports input common-mode voltage from GND to V_CC − 1.5 V and exhibits 80 dB common-mode rejection ratio.

It operates across industrial temperature ranges (0°C to +70°C) with supply rejection of 75 dB at 3 V and 92 dB at 5 V. Response time scales inversely with overdrive: 0.7 μs (t_PLH/t_PHL) at 40 mV overdrive, 2 μs at 5 mV overdrive, under 50 pF load.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply current	9 μA typ per comparator - enables multi-year battery life in always-on sensing nodes
Input bias current	1 pA typ - preserves signal integrity in high-impedance sensor interfaces (e.g., photodiode, pH electrode)
Input offset voltage	5 mV max - sets minimum detectable differential for precision thresholding
Response time	2 μs typ at 5 mV overdrive - supports kHz-level event detection without excessive latency
Common-mode range	0 V to V_CC − 1.5 V - allows direct GND-referenced input sensing without level-shifting
Output type	CMOS push-pull - eliminates external pull-up resistors, reducing BOM count and board space
ESD rating	1.5 kV CDM - meets robustness requirements for handling in non-EPA assembly environments

Pinout & Package

DIP14 plastic package (14-pin dual in-line), through-hole mount, 20 mm × 8.5 mm body, 2.54 mm lead pitch, RoHS-compliant ECOPACK®.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 5, 6, 8, 9, 12, 13	Comparator inputs (IN−/IN+ pairs)	Eight terminals forming four differential input pairs; each pair assigned to one comparator
3, 4, 10, 11	Comparator outputs	CMOS push-pull outputs - drive logic-high to V_CC − 0.2 V and logic-low to ≤ 575 mV at 4 mA sink
7	V_CC− (GND)	Negative supply rail - referenced to system ground in single-supply mode
14	V_CC+	Positive supply rail - accepts 2.7–16 V; powers all four comparators and outputs

Key Features

Feature	Design Value
Quad independent comparators	Four fully isolated channels on one die - reduces component count vs. discrete solutions in multi-threshold systems
Rail-to-rail input capability	Input common-mode extends to GND - enables direct interface with 0 V-referenced sensors (e.g., thermistors, RTDs)
Push-pull CMOS output	No external pull-up required - saves PCB area and eliminates resistor tolerance drift in timing-critical paths
Ultra-low power consumption	20× lower ICC than LM339 - extends runtime in coin-cell or energy-harvesting applications
High ESD immunity	1.5 kV charged-device-model rating - improves manufacturing yield and field reliability in handheld devices

Applications

Battery Voltage Monitor

Smoke Detector Threshold Sensing

Use Scenario: Detecting low battery condition in portable medical devices before critical shutdown.

IC Role / Device Role / Timing Role: Quad comparator compares stacked cell voltages against precision reference thresholds.

Use Value: 9 μA total quiescent current ensures >5-year shelf life on primary lithium cells.

Use Scenario: Validating ionization chamber current against alarm and fault thresholds.

IC Role / Device Role / Timing Role: Simultaneous comparison of chamber signal, reference, and self-test levels.

Use Value: 1 pA input bias prevents leakage-induced false alarms in high-impedance chamber circuits.

Industrial Temperature Controller

Power Supply Sequencing

Use Scenario: Monitoring thermistor-based heating element feedback in HVAC control panels.

IC Role / Device Role / Timing Role: Comparator detects crossing of upper/lower temperature setpoints to trigger relay actuation.

Use Value: Input common-mode range including GND allows direct connection to grounded thermistor dividers.

Use Scenario: Enforcing strict power-up order across multiple rails in FPGA-based systems.

IC Role / Device Role / Timing Role: Four comparators monitor V_CCINT, V_CCIO, V_CCBRAM, and V_{CC_AUX} against reference voltages.

Use Value: Push-pull outputs directly drive enable pins of downstream DC/DC converters without level translation.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
LM339N	Bipolar input stage; 2 mA supply current per comparator; open-collector output requiring pull-up	Higher power draw limits use in battery systems; slower response (1.3 μs min) but higher noise immunity	Select when legacy compatibility and cost sensitivity outweigh power savings
TLV3704IDR	CMOS input; 1 μA supply current; rail-to-rail output swing; 14-pin SOIC only	Lower ICC enables microampere-sleep modes; no DIP14 option limits through-hole prototyping	Select for lowest possible power in space-constrained PCBs where surface-mount is acceptable

Compared with LM339N and TLV3704IDR, TS3704CN uniquely balances ultra-low ICC (9 μA), DIP14 through-hole availability, and push-pull output - making it optimal for cost-sensitive, serviceable, and battery-backed industrial controls.

Availability

TS3704CN is available at Aetrix Electronics and suitable for battery voltage monitoring, smoke detector threshold sensing, and industrial temperature controller designs requiring stable component supply and long-term obsolescence management.

Supply support for TS3704CN 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 sensor solutions for industrial, automotive, 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 bias, and layout simplicity are critical design constraints.

FAQ

What is the maximum allowable supply voltage for TS3704CN?

The absolute maximum supply voltage is 18 V between V_CC+ and V_CC−. For reliable operation, ST specifies 2.7 V to 16 V under normal conditions. Exceeding 16 V risks permanent damage even if within the 18 V absolute limit, as internal protection structures may not sustain prolonged overvoltage stress.

Can TS3704CN operate with a single 3.3 V supply?

Yes - TS3704CN is fully specified at 3 V supply (see Table 3). It delivers 2.4 V high-level output and 575 mV low-level output at 4 mA load, with 5 mV input offset and 2 μs response time. Input common-mode range extends from 0 V to 1.8 V, supporting direct interface with 3.3 V ADC references.

Is TS3704CN pin-compatible with LM339 in DIP14 packages?

Yes - TS3704CN uses identical DIP14 pinout and functional mapping as LM339: pins 1–2–5–6–8–9–12–13 are inputs, pins 3–4–10–11 are outputs, pin 7 is GND, and pin 14 is V_CC+. No PCB redesign is needed for drop-in replacement, though pull-up resistors become unnecessary due to push-pull outputs.

Does TS3704CN require external hysteresis for noise immunity?

No - hysteresis is not built-in, but the device supports external positive feedback. With its 1 pA input bias, adding a 10 MΩ feedback resistor introduces negligible error. Typical hysteresis of 10–50 mV can be implemented using standard resistor values without degrading input impedance or accuracy.

TS3704CN Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: 14-DIP (0.300", 7.62mm)

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:: 0°C ~ 70°C

Operating Temperature:: -

Grade:: -

Qualification:: Through Hole

:: 14-DIP

TS3704CN FAQ

1.How can I place an order for TS3704CN through Aetrix?

Please submit a Request for Quotation (RFQ) for TS3704CN 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 TS3704CN reliable?

The price and inventory of TS3704CN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS3704CN is usually 5 days.

3.What payment methods are accepted for TS3704CN?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS3704CN transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TS3704CN?

TS3704CN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TS3704CN 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 TS3704CN?

For technical support, including TS3704CN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS3704CN requirements.

6.How does Aetrix verify that TS3704CN is sourced from the original manufacturer or authorized distributors?

All TS3704CN 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 TS3704CN meets industry standards.

7.What is the process for return or replacement of TS3704CN?

All TS3704CN units undergo pre-shipment inspection (PSI). If there is an issue with TS3704CN, 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 TS3704CN part is unused and in its original packaging.

Return procedure for TS3704CN:

1.Submit a request within 90 days.

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

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