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

Texas Instruments TLC339IN

Name: TLC339IN
Brand: Texas Instruments
SKU: TLC339IN
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TLC339IN

Manufacturer:: Texas Instruments

Category:: Comparators

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

Datasheet:: TLC339IN.pdf

Description:: IC COMPARATOR 4 GEN PUR 14DIP

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Product details

Overview

TLC339IN from Texas Instruments is a quad differential voltage comparator with open-drain CMOS outputs, designed for single-supply operation from 3 V to 16 V. It delivers 2.5 µs typical propagation delay at 5-mV overdrive, consumes only 200 µW typical at 5 V, and features 10¹² Ω typical input impedance - enabling precision level detection in battery-powered industrial sensors and power supply supervisors.

For engineers reviewing the TLC339IN datasheet, TLC339IN pinout, TLC339IN application, or TLC339IN equivalent, key selection criteria include industrial-temperature operation (−40°C to +85°C), rail-to-rail input common-mode range (to VDD−1.5 V), low input offset voltage (7 mV max), open-drain output compatibility with wired-OR logic, and LinCMOS™ process stability under differential stress.

Technical Context

The TLC339IN implements four independent comparators using Texas Instruments' LinCMOS™ process, delivering CMOS-level power efficiency while maintaining analog precision - including stable input offset voltage (<0.23 µV/month drift) and high common-mode rejection (84 dB min). Its open-drain MOS output stage requires external pull-up resistors and supports interface to TTL, CMOS, or mixed-voltage systems.

Unlike bipolar comparators (e.g., LM339), the TLC339IN avoids input phase reversal and sustains high input impedance across its full operating temperature range (−40°C to +85°C), with guaranteed performance up to 20 mA sink per output and total ground current ≤60 mA. Input bias current remains below 2 nA at 85°C.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	3 V to 16 V - enables direct operation from Li-ion, 5 V, or 12 V rails without regulation.
Propagation Delay (tPLH/tPHL)	2.5 µs typ at 5-mV overdrive - supports fast threshold detection in motor control timing loops.
Input Offset Voltage (max)	7 mV over −40°C to +85°C - ensures reliable switching accuracy in precision reference monitoring.
Input Bias Current (max)	2 nA at 85°C - minimizes error in high-impedance sensor interfaces (e.g., thermistors, photodiodes).
Output Sink Current	20 mA per channel - drives LEDs, relays, or logic inputs directly with standard pull-up resistors.
Quiescent Supply Current	125 µA max (four comparators) - extends battery life in always-on supervisory circuits.
Common-Mode Input Range	0 V to VDD−1.5 V - supports sensing near ground or rail without clamping diodes.

Pinout & Package

Package: 14-pin Plastic Dual Inline Package (PDIP-N), body width 0.300 inch, lead finish NiPdAu, RoHS compliant.

Pin/Terminal	Circuit Role	Design Meaning
1	OUT1	Open-drain output of Comparator 1 - requires external pull-up; sinks current when IN+ > IN−.
2	IN1−	Inverting input of Comparator 1 - accepts signals within 0 V to VDD−1.5 V common-mode range.
3	IN1+	Non-inverting input of Comparator 1 - used for reference or signal comparison.
4	IN2−	Inverting input of Comparator 2 - electrically isolated; shares no internal connection with other inputs.
5	IN2+	Non-inverting input of Comparator 2 - supports independent dual-threshold detection.
6	GND	Analog/digital ground reference - must be low-impedance; decoupling capacitor (0.1 µF) required nearby.
7	OUT2	Open-drain output of Comparator 2 - compatible with wired-OR bus configurations.
8	OUT3	Open-drain output of Comparator 3 - enables three-level window detection or priority encoding.
9	IN3−	Inverting input of Comparator 3 - supports cascaded or multi-zone sensing architectures.
10	IN3+	Non-inverting input of Comparator 3 - configurable as high-threshold reference point.
11	IN4−	Inverting input of Comparator 4 - fully independent; no crosstalk with other channels.
12	IN4+	Non-inverting input of Comparator 4 - used for fault detection or redundant monitoring.
13	VDD	Positive supply rail - powers all four comparators; must be bypassed with 0.1 µF ceramic capacitor.
14	OUT4	Open-drain output of Comparator 4 - supports system-level reset generation or interrupt signaling.

Key Features

Feature	Design Value
LinCMOS™ Process Technology	Enables 10¹² Ω input impedance and sub-nA bias current while maintaining stable offset voltage under differential stress.
Single-Supply Operation (3 V–16 V)	Eliminates need for split supplies in portable or industrial 12 V/24 V systems; supports wide-input power monitors.
Open-Drain Outputs	Allows wired-OR logic, level translation, and direct interface to microcontroller interrupt pins or optocouplers.
Industrial Temperature Range	Guaranteed operation from −40°C to +85°C - suitable for factory automation, motor drives, and outdoor equipment.
ESD Protection	On-chip protection rated to 2000 V (MIL-STD-883C, Method 3015.2) - reduces handling sensitivity and board-level ESD risk.

Applications

Motor Speed Control	Power Supply Supervision
Use Scenario: Pulse-width-modulated (PWM) control of DC brush motors using potentiometer-adjusted reference and feedback voltage. IC Role / Device Role / Timing Role: Quad comparator compares ramp signal against adjustable thresholds to generate non-overlapping drive pulses for half-H bridge drivers. Use Value: Enables precise speed regulation with <2.5 µs response, supporting closed-loop update rates >100 kHz without latency-induced instability.	Use Scenario: Monitoring 5 V and 12 V rails in embedded systems to trigger early power-fail warning and hard reset. IC Role / Device Role / Timing Role: Two comparators detect undervoltage on separate rails; third generates time-delayed reset via RC network. Use Value: Delivers deterministic brownout response with 7 mV offset tolerance, preventing false resets during transient load surges.
Two-Phase Clock Generation	Threshold Detection in Sensor Interfaces
Use Scenario: Generating complementary, non-overlapping clock signals for synchronous logic or power converter gate drivers. IC Role / Device Role / Timing Role: Three comparators configured as hysteresis oscillators and phase-shifted discriminators produce clean 50% duty-cycle clocks. Use Value: Achieves <10 ns output transition time and jitter-free dead-time control - critical for minimizing shoot-through in MOSFET bridges.	Use Scenario: Converting analog outputs from temperature, pressure, or light sensors into digital logic-level alerts. IC Role / Device Role / Timing Role: Single comparator channel compares sensor voltage against precision reference; open-drain output drives MCU GPIO. Use Value: Maintains 2 nA max input bias at 85°C - preserves accuracy in high-resistance sensor networks (e.g., 100 kΩ thermistor dividers).

Motor Speed Control

Power Supply Supervision

Use Scenario: Pulse-width-modulated (PWM) control of DC brush motors using potentiometer-adjusted reference and feedback voltage.

IC Role / Device Role / Timing Role: Quad comparator compares ramp signal against adjustable thresholds to generate non-overlapping drive pulses for half-H bridge drivers.

Use Value: Enables precise speed regulation with <2.5 µs response, supporting closed-loop update rates >100 kHz without latency-induced instability.

Use Scenario: Monitoring 5 V and 12 V rails in embedded systems to trigger early power-fail warning and hard reset.

IC Role / Device Role / Timing Role: Two comparators detect undervoltage on separate rails; third generates time-delayed reset via RC network.

Use Value: Delivers deterministic brownout response with 7 mV offset tolerance, preventing false resets during transient load surges.

Two-Phase Clock Generation

Threshold Detection in Sensor Interfaces

Use Scenario: Generating complementary, non-overlapping clock signals for synchronous logic or power converter gate drivers.

IC Role / Device Role / Timing Role: Three comparators configured as hysteresis oscillators and phase-shifted discriminators produce clean 50% duty-cycle clocks.

Use Value: Achieves <10 ns output transition time and jitter-free dead-time control - critical for minimizing shoot-through in MOSFET bridges.

Use Scenario: Converting analog outputs from temperature, pressure, or light sensors into digital logic-level alerts.

IC Role / Device Role / Timing Role: Single comparator channel compares sensor voltage against precision reference; open-drain output drives MCU GPIO.

Use Value: Maintains 2 nA max input bias at 85°C - preserves accuracy in high-resistance sensor networks (e.g., 100 kΩ thermistor dividers).

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
LM339N	Bipolar process; 2 mA supply current; 300 µs typical propagation delay; input common-mode range excludes VDD.	Higher power consumption and slower response limit use in battery-powered or high-speed systems.	Select LM339N only where cost is primary and speed/power are not constrained.
TLC3704CPW	Push-pull outputs (no external pull-up needed); same LinCMOS™ process; identical supply range and temp grade.	Eliminates pull-up resistors but lacks wired-OR capability - unsuitable for shared interrupt buses.	Choose TLC3704CPW when driving CMOS loads directly and bus sharing is unnecessary.

Compared with LM339N, TLC339IN cuts supply current by >95% and improves speed by 120×; versus TLC3704CPW, it trades push-pull convenience for wired-logic flexibility and lower system component count in multi-interrupt designs.

Availability

TLC339IN is available at Aetrix Electronics and suitable for industrial motor control, power supply supervision, two-phase clock generation, and sensor threshold detection requiring stable component supply across extended temperature ranges.

Supply support for TLC339IN 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

Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision analog IC design and high-reliability manufacturing.

The TLC339IN belongs to TI's LinCMOS™ comparator family, engineered specifically for low-power, high-precision voltage comparison in industrial and automotive environments where thermal stability and rail-to-rail input operation are essential.

FAQ

What is the maximum operating temperature range for the TLC339IN?

The TLC339IN is specified for continuous operation from −40°C to +85°C - the industrial temperature grade. This range is validated across all electrical parameters in the datasheet, including input offset voltage (7 mV max), supply current (125 µA max), and propagation delay (2.5 µs typ at 5-mV overdrive). The PDIP package supports reflow and hand-soldering per JEDEC J-STD-020.

Does the TLC339IN require external pull-up resistors on its outputs?

Yes, the TLC339IN features open-drain CMOS outputs and requires external pull-up resistors to VDD or another logic rail. Typical values range from 2.2 kΩ to 10 kΩ depending on rise time and load capacitance. Without pull-ups, outputs remain floating in the high state; each output can sink up to 20 mA, enabling direct LED or relay drive when properly biased.

Can the TLC339IN operate from a 3.3 V supply?

Yes, the TLC339IN supports supply voltages from 3 V to 16 V - explicitly including 3.3 V. At 3.3 V, the common-mode input range is 0 V to 1.8 V, and the low-level output voltage remains ≤400 mV at 6 mA sink. Propagation delay increases slightly (≈3.2 µs at 5-mV overdrive), but all key specs remain guaranteed per the industrial-grade characterization.

How does the LinCMOS™ process benefit the TLC339IN in sensor applications?

The LinCMOS™ process gives the TLC339IN 10¹² Ω typical input impedance and sub-nA input bias current - critical for preserving signal integrity in high-impedance sensor interfaces like thermistors, RTDs, or photodiodes. Unlike bipolar comparators, it avoids input phase reversal and maintains stable offset voltage (<0.23 µV/month drift), ensuring long-term accuracy without recalibration.

Is the TLC339IN pin-compatible with the LM339N?

No, the TLC339IN is not pin-compatible with the LM339N. While both are 14-pin quad comparators in PDIP packages, the pin assignments differ: LM339N places GND at Pin 4 and VCC at Pin 12, whereas TLC339IN uses Pin 6 for GND and Pin 13 for VDD. PCB layout must be redesigned to accommodate the distinct pinout shown in the TLC339IN datasheet Figure 1.

TLC339IN Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

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

Series:: LinCMOS™

Packaging:: Bulk

Product Status:: Active

Type:: General Purpose

Number of Elements:: 4

Output Type:: CMOS, Open-Drain

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

:: 5mV @ 10V

Voltage - Input Offset (Max):: 5pA @ 5V

Current - Input Bias (Max):: 20mA

Current - Output (Typ):: 125µA

Current - Quiescent (Max):: 84dB CMRR

CMRR, PSRR (Typ):: 4.5µs

Propagation Delay (Max):: -

Hysteresis:: -40°C ~ 85°C

Operating Temperature:: -

Grade:: -

Qualification:: Through Hole

:: 14-PDIP

TLC339IN FAQ

1.How can I place an order for TLC339IN through Aetrix?

Please submit a Request for Quotation (RFQ) for TLC339IN 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 TLC339IN reliable?

The price and inventory of TLC339IN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC339IN is usually 5 days.

3.What payment methods are accepted for TLC339IN?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC339IN transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLC339IN?

TLC339IN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLC339IN 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 TLC339IN?

For technical support, including TLC339IN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC339IN requirements.

6.How does Aetrix verify that TLC339IN is sourced from the original manufacturer or authorized distributors?

All TLC339IN 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 TLC339IN meets industry standards.

7.What is the process for return or replacement of TLC339IN?

All TLC339IN units undergo pre-shipment inspection (PSI). If there is an issue with TLC339IN, 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 TLC339IN part is unused and in its original packaging.

Return procedure for TLC339IN:

1.Submit a request within 90 days.

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

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