Texas Instruments TLC339CN

Overview

TLC339CN 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 with 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 sensor interfaces and power supervision circuits.

For engineers reviewing the TLC339CN datasheet, TLC339CN pinout, TLC339CN application, or TLC339CN equivalent, key selection considerations include its commercial-temperature-range (0°C to 70°C) rating, 6.5 mV max input offset voltage, open-drain output compatibility with wired-OR logic and mixed-voltage systems, and direct functional equivalence to LM339-based designs with significantly lower power consumption.

Technical Context

The TLC339CN uses Texas Instruments' LinCMOS™ process to achieve ultra-low power without sacrificing speed or input stability. Its four independent comparators feature rail-to-rail common-mode input range (0 V to VDD−1.5 V), 84 dB typical common-mode rejection ratio, and 85 dB supply-voltage rejection ratio-ensuring robust performance under varying supply and input conditions.

Each comparator employs an open-drain MOS output stage capable of sinking up to 20 mA per channel, with total ground current limited to 60 mA. Input bias current remains below 0.6 nA at 70°C, enabling high-impedance sensing applications such as thermistor monitoring and precision reference comparison.

Key Specifications

Pinout & Package

Package: 14-pin Plastic Dual Inline Package (PDIP-N), through-hole mount, RoHS-compliant, NIPDAU lead finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM339N and TLC339CDR, the TLC339CN offers the lowest power consumption in a through-hole package while maintaining identical functionality - making it ideal for development, field service, and low-volume commercial equipment where manual assembly or socketing is required.

Availability

TLC339CN is available at Aetrix Electronics and suitable for motor control, power supervision, clock generation, and sensor interface applications requiring stable component supply, long-lifecycle support, and through-hole mounting compatibility.

Supply support for TLC339CN 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 delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.

The TLC339CN belongs to TI's LinCMOS™ comparator family, engineered specifically for ultra-low-power, high-input-impedance applications where precision, stability, and single-supply operation are essential - such as portable instrumentation and energy-efficient control systems.

FAQ

What is the maximum operating supply voltage for the TLC339CN?

The TLC339CN supports a supply voltage range of 3 V to 16 V. Absolute maximum rating is 18 V, but operation above 16 V is not recommended or characterized. At 16 V, supply current remains within specification (≤100 µA), and input common-mode range extends to VDD−1.5 V (i.e., up to 14.5 V), enabling direct interface with higher-voltage analog signals.

Does the TLC339CN have push-pull or open-drain outputs?

The TLC339CN has open-drain CMOS outputs on all four channels. Each output requires an external pull-up resistor to define the logic-high voltage level, which may differ from VDD (e.g., pulled up to 12 V while VDD = 5 V). This architecture supports wired-OR logic, level translation, and mixed-voltage system interfacing - unlike push-pull devices such as the TLC3704.

What is the input offset voltage specification for the TLC339CN over temperature?

The TLC339CN has a maximum input offset voltage of 6.5 mV across its full operating temperature range of 0°C to 70°C. At 25°C, typical offset is 1.4 mV, and the device exhibits exceptional long-term stability - just 0.23 µV/month drift including the first 30 days - making it suitable for applications demanding consistent threshold accuracy over time.

Can the TLC339CN operate from a 3.3-V supply?

Yes, the TLC339CN is fully specified for operation from 3 V to 16 V, including 3.3 V. At 3.3 V, the common-mode input range is −0.2 V to 1.8 V, and propagation delay increases slightly (to ~3.5 µs at 5-mV overdrive), while supply current drops to ~60 µA. All electrical characteristics remain guaranteed per datasheet limits, supporting modern low-voltage embedded systems.

Is the TLC339CN pin-compatible with the LM339N?

Yes, the TLC339CN is pin-compatible with the LM339N in the 14-pin PDIP package: both share identical pin assignments for VDD, GND, four IN+/IN− pairs, and four open-drain outputs. However, the TLC339CN draws significantly less current (100 µA vs. 500 µA), offers faster response, and provides superior input impedance - allowing drop-in replacement in most LM339N designs without layout changes.