Texas Instruments TLC3702CDRG4

Overview

TLC3702CDRG4 from Texas Instruments is a dual micropower LinCMOS™ voltage comparator with push-pull CMOS outputs, 5-mV max input offset voltage at 25°C, 100 μW typical supply power at 5 V, and 2.7 μs typical low-to-high propagation delay with 5-mV overdrive - used in battery-powered sensor threshold detection and precision level-shifting circuits.

For engineers reviewing the TLC3702CDRG4 datasheet, TLC3702CDRG4 pinout, TLC3702CDRG4 application, or TLC3702CDRG4 equivalent, key selection criteria include single-supply operation (3 V to 16 V), rail-to-rail input common-mode range (0 to VDD − 1.5 V), ±8 mA output drive capability, and commercial-temperature-grade (0°C to 70°C) qualification.

Technical Context

The TLC3702CDRG4 implements two independent comparators on a LinCMOS™ process, enabling stable input offset voltage (<5 mV) across temperature while maintaining ultra-low bias current (≤5 pA at 25°C) and high CMRR (84 dB). Its push-pull output stage eliminates external pull-up resistors and directly drives capacitive loads up to 50 pF.

This device replaces LM339 in low-power applications by consuming one-twentieth the supply current while matching response time - enabled by differential input circuitry with input voltage range extending to VDD − 1.5 V and ESD protection rated per human-body model (2000 V).

Key Specifications

Pinout & Package

Package: SOIC-8 (D package), tape-and-reel variant denoted by R suffix (TLC3702CDRG4).

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM393DR and TLC3702IDR, the TLC3702CDRG4 delivers 12× lower quiescent power than LM393DR and 30% lower unit cost than TLC3702IDR, while maintaining identical SOIC-8 footprint and functional compatibility for 0°C–70°C applications.

Availability

TLC3702CDRG4 is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial sensor interfaces, and consumer electronics power management requiring stable component supply across volume production cycles.

Supply support for TLC3702CDRG4 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 over 50 years of innovation in precision analog ICs.

The TLC3702 product line was designed for ultra-low-power, single-supply voltage comparison in space- and energy-constrained systems - targeting portable medical devices, smart sensors, and green-energy monitoring equipment.

FAQ

What is the maximum allowable supply voltage for the TLC3702CDRG4?

The absolute maximum supply voltage for the TLC3702CDRG4 is 18 V, but the recommended operating range is 3 V to 16 V. Operation at 16 V is fully characterized per datasheet specifications, including output drive strength, propagation delay, and input offset voltage. Exceeding 18 V risks permanent damage to the LinCMOS™ input stage and output transistors. The TLC3702CDRG4 maintains stable performance across this full 3–16 V range, making it suitable for both 3.3 V logic systems and 12 V industrial rails.

Does the TLC3702CDRG4 require external pull-up resistors on its outputs?

No, the TLC3702CDRG4 does not require external pull-up resistors because it features a push-pull CMOS output stage capable of sourcing and sinking up to ±8 mA. This architecture eliminates the static power loss and board space associated with pull-up resistors while enabling direct interface with TTL, CMOS, and LED loads. The output high voltage is typically 4.5 V at VDD = 5 V and IOH = −4 mA, and output low is 300 mV at IOL = 4 mA - all verified across the 0°C to 70°C commercial temperature range for the TLC3702CDRG4.

Can the TLC3702CDRG4 operate with input voltages beyond the supply rails?

Yes, the TLC3702CDRG4 input pins tolerate voltages from −0.3 V to VDD + 0.3 V continuously, with internal ESD protection clamping transients up to ±18 V differential. However, sustained input voltages exceeding VDD or below GND must be externally current-limited to ±5 mA to prevent damage. The device's input protection circuitry - including Q1 saturation current limiting and D1/D2 clamping - is validated per 2000 V HBM, but operation outside the recommended common-mode range (0 V to VDD − 1.5 V) may affect accuracy and should be verified per application conditions for the TLC3702CDRG4.

What is the input bias current specification for the TLC3702CDRG4 at 70°C?

At 70°C, the input bias current for the TLC3702CDRG4 is specified at a maximum of 0.6 nA. This value is derived from the datasheet's electrical characteristics table for the TLC3702C grade, where IIB = 0.6 nA at TA = 70°C and VIC = 2.5 V. The LinCMOS™ process ensures exceptionally low leakage, enabling high-impedance sensor interfacing (e.g., pH electrodes or photodiode amplifiers) without significant error contribution. This 0.6 nA bias current remains stable across the full commercial temperature range and is significantly lower than bipolar comparators like LM393 (typically 250 nA).

Is the TLC3702CDRG4 pin-compatible with the LM339?

No, the TLC3702CDRG4 is not pin-compatible with the LM339. The LM339 uses a 14-pin SOIC package with four open-collector comparators, while the TLC3702CDRG4 is an 8-pin SOIC housing two push-pull comparators. Pin assignments differ fundamentally: TLC3702CDRG4 places GND at pin 4 and VDD at pin 5, whereas LM339 assigns VCC to pin 16 and GND to pin 4 in its 14-pin layout. Although functionally similar as dual comparators, direct replacement requires PCB redesign. Engineers selecting the TLC3702CDRG4 should use its dedicated SOIC-8 footprint and leverage its lower power and integrated output drive.