Texas Instruments TLC3704IN

Overview

TLC3704IN from Texas Instruments is a quad micropower LinCMOS voltage comparator IC designed for single-supply operation (3 V to 16 V), delivering 2.7 µs typical propagation delay (tPLH) with 5-mV overdrive, ±8 mA push-pull CMOS output drive, and only 200 µW typical supply power at 5 V. It operates across −40°C to +85°C and replaces LM339 with 1/20th the power consumption in industrial sensor interface and battery-powered monitoring circuits.

For engineers reviewing the TLC3704IN datasheet, TLC3704IN pinout, TLC3704IN application, or TLC3704IN equivalent, this page delivers verified package mapping (14-pin PDIP), confirmed electrical specs (VIO ≤ 7 mV over full temp range), functional distinction from TLC3704M/TLC3704Q variants, and real-world design implications of its rail-to-rail input capability and ESD-protected LinCMOS process.

Technical Context

The TLC3704IN uses Texas Instruments' LinCMOS process to achieve high input impedance (>10¹² Ω), ultra-low input bias current (5 pA typ at 25°C), and stable input offset voltage (≤7 mV over −40°C to +85°C). Its fully differential input stage supports common-mode voltages from −0.2 V to VDD − 1.5 V, enabling direct sensing near ground or rail without level-shifting.

Each comparator features a push-pull CMOS output stage eliminating external pull-up resistors - reducing board space, component count, and static power loss while maintaining TTL-compatible logic levels (VOH ≥ 4.3 V, VOL ≤ 400 mV at 85°C with 4 mA load). The architecture inherently supports capacitive loads up to 50 pF without oscillation.

Key Specifications

Pinout & Package

Package: 14-pin plastic dual in-line package (PDIP-N), 0.3-inch body width, through-hole mounting.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM339N, TLC3704IN cuts quiescent current by >95% and eliminates pull-up resistors, while TLC3702IN offers identical per-channel performance in half the channel count - making TLC3704IN optimal for compact, low-power quad-sensing applications where full channel utilization is needed.

Availability

TLC3704IN is available at Aetrix Electronics and suitable for industrial sensor interface, battery monitoring systems, motor control feedback, and power supply sequencing requiring stable component supply across extended temperature ranges.

Supply support for TLC3704IN 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, embedded processing, and digital signal technologies, with decades of expertise in precision analog ICs and industrial-grade reliability.

The TLC3704IN belongs to TI's LinCMOS comparator family, engineered for micropower, rail-to-rail input operation, and robust ESD tolerance in harsh industrial environments - targeting applications where low power, wide temperature range, and high input impedance are critical.

FAQ

What is the operating temperature range of the TLC3704IN?

The TLC3704IN is characterized for operation from −40°C to +85°C, meeting extended industrial temperature requirements. This range is explicitly defined in the "AVAILABLE OPTIONS" table and confirmed in the "recommended operating conditions" section for TLC3704I grade, which maps to the "IN" suffix. It supports deployment in factory automation, outdoor metering, and automotive under-hood auxiliary systems where ambient temperatures exceed commercial-grade limits.

Does the TLC3704IN require external pull-up resistors on its outputs?

No, the TLC3704IN does not require external pull-up resistors. Its push-pull CMOS output stage actively drives both high and low states, delivering VOH ≥ 4.3 V and VOL ≤ 400 mV at 85°C with 4 mA load. This eliminates the need for pull-up resistors, reducing component count, board space, and power loss - a key differentiator from open-collector comparators like the LM339.

What is the maximum input common-mode voltage for the TLC3704IN?

The TLC3704IN supports a common-mode input voltage range from −0.2 V to VDD − 1.5 V over its full operating temperature range. At 25°C, the range extends to 0 V to VDD − 1 V. This rail-to-rail input capability allows direct interfacing with sensors whose outputs swing below ground or near VDD, such as current-sense amplifiers or thermocouple signal conditioners, without external level-shifting circuitry.

How does the TLC3704IN compare to the TLC3704M in terms of supply voltage?

The TLC3704IN supports a supply voltage range of 3 V to 16 V, whereas the TLC3704M requires a minimum of 4 V. This 1-V lower start-up voltage makes the TLC3704IN suitable for 3.3 V systems and brown-out detection in low-voltage battery applications where the TLC3704M would be non-operational. Both share identical pinout, output drive, and temperature-rated performance above their respective minimums.

Is the TLC3704IN pin-compatible with the LM339N?

No, the TLC3704IN is not pin-compatible with the LM339N. While both are 14-pin DIP quad comparators, the pin assignments differ: LM339N places GND at pin 4 and VCC at pin 12, whereas TLC3704IN uses pin 7 for GND and pin 14 for VDD. Additionally, TLC3704IN outputs are push-pull (pins 1, 2, 8, 11), while LM339N outputs are open-collector (pins 1, 2, 13, 14). Board redesign is required for substitution.