Texas Instruments TLC339CNS

Overview

TLC339CNS 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 200 µW typical supply power at 5 V, 2.5 µs typical propagation delay with 5-mV overdrive, and 10¹² Ω typical input impedance - enabling precision threshold detection in battery-powered sensor interfaces and low-power supervisory circuits.

For engineers reviewing the TLC339CNS datasheet, TLC339CNS pinout, TLC339CNS application, or TLC339CNS equivalent, key selection criteria include its commercial-temperature-range (0°C to 70°C) rating, SOIC-14 package with NS suffix, 5-mV max input offset voltage at 25°C, open-drain output compatibility with wired-OR logic, and LinCMOS™ process advantages in input stability and ESD robustness.

Technical Context

The TLC339CNS implements four independent comparators using Texas Instruments' LinCMOS™ process, delivering high input impedance and ultra-low bias currents while maintaining stable offset voltage under differential stress. Its open-drain output stage requires external pull-up resistors and supports interfacing with TTL, CMOS, and mixed-voltage logic systems.

It operates across a wide 3 V–16 V supply range with common-mode input voltage extending to VDD−1.5 V, enabling direct sensing of signals near ground or rail without level-shifting. Input offset voltage drift is specified at ≤0.23 µV/month, supporting long-term accuracy in monitoring applications.

Key Specifications

Pinout & Package

SOP (NS) package - 14-pin small-outline plastic package with gull-wing leads, RoHS-compliant, moisture sensitivity level 1, rated for 0°C to 70°C operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM339N, TLC339CNS offers 20× lower power and guaranteed 3-V operation; compared with TLC3704CDR, it trades push-pull convenience for open-drain versatility and 3.7× lower supply current - making it optimal for low-power, multi-voltage, or wired-OR architectures.

Availability

TLC339CNS is available at Aetrix Electronics and suitable for battery management systems, motor control modules, power supply supervisors, and industrial sensor interfaces requiring stable component supply across extended production lifecycles.

Supply support for TLC339CNS 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 ICs and industrial-grade components.

The TLC339 series belongs to TI's LinCMOS™ comparator family, engineered specifically for low-power, high-input-impedance applications in commercial and industrial environments where long-term offset stability and rail-to-rail input capability are essential.

FAQ

What is the operating temperature range for the TLC339CNS?

The TLC339CNS is characterized for operation from 0°C to 70°C - the commercial temperature range. This is explicitly defined in the "recommended operating conditions" table for TLC339C grade devices. The "CNS" suffix confirms the SOP (NS) package variant rated for this range, distinct from industrial (I) or extended (Q) versions. Full parametric performance, including input offset voltage (6.5 mV max) and propagation delay (2.5 µs typ), is guaranteed across this interval.

Does the TLC339CNS require external pull-up resistors on its outputs?

Yes, the TLC339CNS features open-drain CMOS outputs that require external pull-up resistors to establish a valid high logic level. Each output can sink up to 20 mA, but the device does not source current. Pull-up values are typically 2.2 kΩ to 10 kΩ depending on speed and voltage requirements. Without pull-ups, outputs remain floating in the high state - making them unsuitable for direct connection to standard CMOS or TTL inputs.

Can the TLC339CNS operate from a 3.3 V supply?

Yes, the TLC339CNS supports supply voltages from 3 V to 16 V, explicitly including 3.3 V operation. Its input common-mode range extends to VDD−1.5 V, so at 3.3 V supply it accepts inputs from −0.2 V to 1.8 V - sufficient for many low-voltage reference and sensor applications. Input offset voltage remains within 6.5 mV max, and propagation delay increases only marginally versus 5 V operation, per TI's typical characteristics curves.

How does the LinCMOS™ process benefit the TLC339CNS in precision applications?

The LinCMOS™ process used in the TLC339CNS delivers 10¹² Ω typical input impedance and sub-picoampere input bias currents - minimizing loading errors in high-impedance sensor circuits. It also ensures exceptional input offset voltage stability (<0.23 µV/month), critical for long-duration measurements in data loggers or utility meters. Unlike standard CMOS comparators, LinCMOS™ maintains these traits even under differential input stress, enabling robust operation in noisy industrial environments.

Is the TLC339CNS pin-compatible with the LM339?

No, the TLC339CNS is not pin-compatible with the LM339. While both are quad comparators in 14-pin packages, the TLC339CNS uses an SOP (NS) package with different lead pitch and mechanical dimensions than the LM339's PDIP or SOIC variants. More critically, the pin assignments differ: TLC339CNS places GND at pin 7 and VDD at pin 14, whereas LM339 (PDIP) places GND at pin 4 and VDD at pin 12. PCB layout must be redesigned to accommodate TLC339CNS.