Texas Instruments TLC3702IDRG4

Overview

TLC3702IDRG4 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 propagation delay (tPLH) with 5-mV overdrive - used in battery-powered sensor threshold detection and precision level-shifting circuits.

For engineers reviewing the TLC3702IDRG4 datasheet, TLC3702IDRG4 pinout, TLC3702IDRG4 application, or TLC3702IDRG4 equivalent, this device delivers rail-to-rail compatible input range (0 to VDD−1.5 V), ±8 mA output drive capability, single-supply operation from 3 V to 16 V, and on-chip ESD protection per HBM 2 kV - critical for low-power industrial monitoring and portable instrumentation design.

Technical Context

The TLC3702IDRG4 integrates two independent comparators fabricated using Texas Instruments' LinCMOS™ process, enabling high input impedance (>10¹² Ω), ultra-low input bias current (5 pA typ at 25°C), and stable input offset voltage across temperature (7 mV max over −40°C to 85°C). Its push-pull output stage eliminates external pullup resistors while maintaining TTL-compatible logic levels and driving capacitive loads up to 50 pF directly.

This device replaces legacy LM339-style comparators with one-twentieth the quiescent power at comparable speed, supports common-mode input voltages down to −0.2 V, and features internal ESD protection circuitry qualified to 2 kV HBM and 200 V CDM - making it suitable for noisy industrial environments where input transients and supply rail sequencing occur.

Key Specifications

Pinout & Package

Package: SOIC-8 (D package), tape-and-reel variant indicated by "R" suffix in part number (TLC3702IDRG4).

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM393DR and TLV3702IDR, the TLC3702IDRG4 uniquely balances micropower operation (65 μA max), robust industrial temperature rating, push-pull output drive, and proven LinCMOS™ stability - making it optimal for long-life embedded systems where reliability and minimal external components are prioritized.

Availability

TLC3702IDRG4 is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial sensor interfaces, and power management circuits requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for TLC3702IDRG4 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 and power management solutions.

The TLC3702IDRG4 belongs to TI's LinCMOS™ comparator family, designed specifically for low-power, high-accuracy threshold detection in single-supply industrial and portable systems - emphasizing input stability, ESD resilience, and output drive simplicity.

FAQ

What is the maximum input voltage range for TLC3702IDRG4?

The TLC3702IDRG4 supports a common-mode input voltage range of −0.2 V to VDD − 1.5 V across its full operating temperature range (−40°C to 85°C). This allows inputs to safely extend slightly below ground or approach within 1.5 V of the positive rail - critical for interfacing with sensors that swing beyond standard rail limits during power-up or fault conditions. The device also tolerates differential input voltages up to ±18 V, with internal current limiting protecting against damage when inputs exceed VICR.

Does TLC3702IDRG4 require external pullup resistors on its outputs?

No, the TLC3702IDRG4 does not require external pullup resistors because it features a push-pull CMOS output stage capable of sourcing and sinking up to ±20 mA per channel. This architecture enables direct connection to TTL, CMOS, or microcontroller GPIO inputs without additional components - reducing BOM cost, PCB area, and power loss associated with pullup networks. The output achieves VOH ≥4.3 V and VOL ≤375 mV at 4 mA load over the full temperature range.

What is the guaranteed input offset voltage specification for TLC3702IDRG4?

The TLC3702IDRG4 has a maximum input offset voltage of 7 mV over the full industrial temperature range (−40°C to 85°C), tested at VDD = 5 V. At 25°C, the typical value is 1.2 mV with a maximum of 5 mV. This tight VIO specification ensures accurate threshold detection in precision applications such as battery voltage monitoring and sensor zero-crossing detection - especially important when paired with low-drift references like REF3025.

Can TLC3702IDRG4 operate from a 3.3 V supply?

Yes, the TLC3702IDRG4 is fully specified to operate from 3 V to 16 V, including standard 3.3 V logic rails. At VDD = 3.3 V, it maintains functional performance: input common-mode range extends from −0.2 V to 1.8 V, output high level reaches ≥2.8 V (at IOH = −4 mA), and supply current remains ≤65 μA. Its LinCMOS™ process ensures stable biasing and low input current even at minimum supply, supporting reliable operation in mixed-voltage embedded systems.

How does the ESD protection in TLC3702IDRG4 compare to standard CMOS comparators?

The TLC3702IDRG4 incorporates Texas Instruments' patented on-chip ESD-protection circuitry, qualified to 2 kV HBM (Human Body Model) and 200 V CDM (Charged Device Model). Unlike basic gate-oxide protection, this design uses active clamping transistors (Q1/Q2) and zener diodes (D3) to shunt transients while minimizing post-ESD leakage - preserving the ultra-low input bias current (<5 pA) essential for high-impedance sensor interfaces. This level of protection exceeds JEDEC standards for industrial-grade comparators.