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

STMicroelectronics TS372CN

Name: TS372CN
Brand: STMicroelectronics
SKU: TS372CN
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TS372CN

Manufacturer:: STMicroelectronics

Category:: Comparators

Package:: 8-DIP (0.300", 7.62mm)

Datasheet:: TS372CN.pdf

Description:: IC COMPARATOR 2 DIFF 8DIP

Quantity:: RFQ Add To RFQ list

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Inventory:2,645

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Product details

Overview

TS372CN from STMicroelectronics is a dual low-power CMOS voltage comparator in an 8-pin DIP package, operating from 3 V to 16 V single supply (or ±1.5 V to ±8 V dual supply), with 0.1 mA/comparator supply current, 1 pA typical input bias current, and 200 ns typical response time. It is used in battery-powered instrumentation where precision, ultra-low input current, and rail-to-rail input common-mode range including ground are required.

For engineers reviewing the TS372CN datasheet, TS372CN pinout, TS372CN application, or TS372CN equivalent, key selection criteria include input offset voltage (≤12 mV), output compatibility with TTL/MOS/CMOS logic families, low 150 mV typical saturation voltage, wide temperature range (0°C to +70°C), and DIP8 through-hole mounting for prototyping and industrial control interfaces.

Technical Context

The TS372CN integrates two independent comparators fabricated using ST's silicon-gate LinMOS process, enabling high input impedance (10¹² Ω typical) and minimal power consumption without sacrificing speed. Its differential input stage supports input common-mode voltages down to ground, and its open-collector compatible outputs drive loads up to 20 mA.

Designed for low-voltage, low-power systems, it features rail-referenced operation, internal ESD protection diodes rated for 50 mA forward current, and thermal design support via specified R_thJA (100°C/W for DIP8). Absolute maximum ratings include ±18 V differential input voltage and 18 V supply voltage.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	3 V to 16 V single supply; enables direct use with Li-ion, 5 V, and 12 V rails without regulation
Supply Current per Comparator	0.1 mA typical; allows continuous operation in multi-year battery-powered devices
Input Bias Current	1 pA typical; preserves signal integrity in high-impedance sensor interfaces (e.g., photodiode, pH electrode)
Response Time	200 ns typical (TTL-level step); supports fast threshold detection in motor commutation or overvoltage alarms
Input Offset Voltage	12 mV max; sets minimum detectable voltage difference in precision level-shifting circuits
Output Saturation Voltage	150 mV typical at 4 mA sink; ensures reliable logic-low recognition when driving TTL or CMOS inputs
Common-Mode Input Range	Includes GND; permits direct sensing of signals referenced to system ground without level-shifting circuitry

Pinout & Package

TS372CN is supplied in an 8-pin plastic DIP (Dual In-line Package) with 2.54 mm lead pitch, compliant with ECOPACK® environmental standards. The package supports through-hole mounting and has a thermal resistance of 100°C/W (R_thJA) at T_amb = +25°C.

Pin/Terminal	Circuit Role	Design Meaning
1	Inverting Input (Comparator A)	Accepts reference or feedback signal; differential pair input node with 1 pA bias current
2	Non-inverting Input (Comparator A)	Accepts sensed signal; supports common-mode voltage down to GND
3	Output (Comparator A)	Open-collector output; requires external pull-up to define logic-high level and sink capability up to 20 mA
4	V_CC– (Ground / Negative Supply)	Reference node for both comparators; connects to system ground in single-supply configurations
5	Non-inverting Input (Comparator B)	Independent input for second threshold comparison; identical electrical characteristics to Pin 2
6	Inverting Input (Comparator B)	Independent reference input for second comparator; matched offset and bias performance vs. Pin 1
7	Output (Comparator B)	Open-collector output; electrically isolated from Output A; shares same V_CC– return path
8	V_CC+ (Positive Supply)	Power rail for both comparators; supports up to 18 V absolute maximum rating

Key Features

Feature	Design Value
Ultra-low input bias current	1 pA typical - enables direct connection to megohm-range sensors without loading error
Single-supply operation with GND-referenced input	Input common-mode range includes 0 V - eliminates need for negative supply or level-shifting in portable designs
Low quiescent current per channel	0.1 mA - reduces total system standby power in always-on monitoring applications
TTL/MOS/CMOS-compatible output	Open-collector structure with 20 mA sink capability - simplifies interface to diverse logic families and discrete loads
Fast propagation delay	200 ns typical - supports real-time response in overcurrent or overtemperature fault detection

Applications

Battery Voltage Monitor

Portable Medical Sensor Interface

Use Scenario: Monitoring lithium-ion cell voltage during charge/discharge cycles in handheld diagnostic tools.

IC Role / Device Role / Timing Role: Dual comparator provides under-voltage lockout (Pin 1/2) and over-voltage alarm (Pin 5/6) with independent thresholds.

Use Value: 1 pA input bias prevents battery drain during sleep mode; 0.1 mA supply current extends operational life between charges.

Use Scenario: Amplifying and comparing weak bio-potential signals (e.g., ECG lead-off detection) in wearable monitors.

IC Role / Device Role / Timing Role: High-impedance input stage conditions electrode signals; dual channels enable simultaneous lead status and signal integrity checks.

Use Value: 10¹² Ω input impedance avoids signal attenuation; rail-to-ground input range accepts DC-coupled sensor outputs without AC coupling.

Industrial Threshold Detector

Low-Power HVAC Control Logic

Use Scenario: Detecting temperature or pressure thresholds in programmable logic controllers using resistive sensor bridges.

IC Role / Device Role / Timing Role: Compares bridge output against precision references; outputs drive optocouplers or microcontroller GPIOs.

Use Value: 12 mV max offset ensures accurate trip points across 0°C–70°C; open-collector outputs interface directly with 3.3 V or 5 V MCU inputs.

Use Scenario: Controlling fan speed staging and valve actuation based on ambient temperature and humidity thresholds in smart thermostats.

IC Role / Device Role / Timing Role: Dual comparator implements hysteresis-based on/off control for two independent HVAC subsystems.

Use Value: 200 ns response enables rapid reaction to transient thermal events; low 150 mV saturation voltage minimizes power loss in relay driver stages.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual low-power voltage comparator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
LM393N	Higher input offset voltage (±2 mV min), higher supply current (0.8 mA/comparator), bipolar input stage	Less suitable for ultra-high-impedance sensor nodes due to 25 nA input bias current	Select LM393N only if cost sensitivity outweighs precision and power requirements
TLV3702CDR	CMOS input (0.5 pA bias), rail-to-rail output, lower supply current (20 µA), but SO-8 only, no DIP8 option	Requires PCB redesign for surface-mount assembly; lacks through-hole prototyping flexibility	Choose TLV3702CDR for next-gen designs prioritizing ultra-low power and modern packaging

Compared with LM393N and TLV3702CDR, TS372CN uniquely balances DIP8 through-hole accessibility, 1 pA input bias, and 0.1 mA supply current-making it optimal for legacy-compatible, battery-sensitive instrumentation where layout flexibility and precision coexist.

Availability

TS372CN is available at Aetrix Electronics and suitable for battery voltage monitoring, portable medical sensor interfaces, and industrial threshold detection requiring stable component supply and long-term manufacturability.

Supply support for TS372CN 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 sensor solutions for industrial, automotive, and consumer markets.

The TS372 belongs to ST's precision analog comparator product line, engineered specifically for low-power, high-input-impedance applications in portable and battery-operated equipment where signal fidelity and energy efficiency are critical.

FAQ

What is the maximum allowable differential input voltage for TS372CN?

The absolute maximum differential input voltage is ±18 V, defined as the voltage between the non-inverting and inverting inputs. Exceeding this rating risks permanent damage to the input stage, regardless of supply voltage. This limit applies even when the device is unpowered, due to internal ESD diode conduction paths.

Can TS372CN operate with a single 3.3 V supply?

Yes - TS372CN is fully specified from 3 V to 16 V single supply. At 3.3 V, it maintains 1 pA typical input bias current and 200 ns typical response time. Output saturation voltage remains ≤400 mV at 4 mA load, ensuring compatibility with 3.3 V logic families when using appropriate pull-up resistors.

Is unused comparator channel termination required?

Yes - if one comparator is unused, its inputs must be biased to create a differential voltage >100 mV (e.g., tie inverting input to V_CC+ and non-inverting to GND). This prevents oscillation or erratic output behavior caused by floating inputs, as confirmed in ST's application note AN2717.

Does TS372CN support dual-supply operation with asymmetric rails?

No - the datasheet specifies dual-supply operation only as symmetrical ±1.5 V to ±8 V. Asymmetric configurations (e.g., +5 V / –3 V) are not characterized or guaranteed. Operation outside the specified V_CC+–V_CC– range may cause undefined output states or increased input offset drift.

TS372CN Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: 8-DIP (0.300", 7.62mm)

Series:: -

Packaging:: Tube

Product Status:: Obsolete

Type:: Differential

Number of Elements:: 2

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

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

:: 10mV @ 5V

Voltage - Input Offset (Max):: 1pA

Current - Input Bias (Max):: 20mA

Current - Output (Typ):: 375µA

Current - Quiescent (Max):: -

CMRR, PSRR (Typ):: -

Propagation Delay (Max):: -

Hysteresis:: 0°C ~ 70°C

Operating Temperature:: -

Grade:: -

Qualification:: Through Hole

:: 8-DIP

TS372CN FAQ

1.How can I place an order for TS372CN through Aetrix?

Please submit a Request for Quotation (RFQ) for TS372CN 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 TS372CN reliable?

The price and inventory of TS372CN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS372CN is usually 5 days.

3.What payment methods are accepted for TS372CN?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS372CN transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TS372CN?

TS372CN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TS372CN 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 TS372CN?

For technical support, including TS372CN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS372CN requirements.

6.How does Aetrix verify that TS372CN is sourced from the original manufacturer or authorized distributors?

All TS372CN 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 TS372CN meets industry standards.

7.What is the process for return or replacement of TS372CN?

All TS372CN units undergo pre-shipment inspection (PSI). If there is an issue with TS372CN, 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 TS372CN part is unused and in its original packaging.

Return procedure for TS372CN:

1.Submit a request within 90 days.

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

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