Texas Instruments TLV3702CDGK

Overview

TLV3702CDGK from Texas Instruments is a dual nanopower comparator with push-pull CMOS output, designed for ultra-low-power sensing and threshold detection in battery-powered systems. It draws only 560 nA per channel, operates from 2.5 V to 16 V, supports input common-mode voltage up to V_CC + 5 V, and features reverse battery protection up to 20 V. It is used in portable medical devices and handheld instrumentation where quiescent current and rail-overvoltage tolerance are critical.

For engineers reviewing the TLV3702CDGK datasheet, TLV3702CDGK pinout, TLV3702CDGK application, or TLV3702CDGK equivalent, key selection criteria include its 560 nA supply current, 8-pin VSSOP (DGK) package, –40°C to 125°C industrial temperature grade, and push-pull output eliminating external pull-up resistors.

Technical Context

The TLV3702CDGK implements a precision comparator core with fail-safe inputs capable of operating 5 V above V_CC without damage, enabling direct sensing of unregulated or higher-voltage rails. Its internal power-on-reset circuit holds outputs low for up to 3 ms during supply ramp-up, ensuring deterministic startup behavior.

It uses a proprietary input stage supporting both within-rail (–0.1 V to V_CC) and over-rail (up to V_CC + 5 V) operation, with input bias current rising from <1 pA (low common-mode) to ~55 nA (over-rail), while maintaining 250 µV typical input offset voltage and 72–88 dB CMRR across supply range.

Key Specifications

Pinout & Package

The TLV3702CDGK is housed in an 8-pin VSSOP (DGK) package measuring 3 mm × 4.9 mm, optimized for space-constrained portable designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV3702CDGK, TLV3702IDGK offers identical functionality with extended temperature qualification, while TLC3702CD trades nanopower efficiency and input robustness for legacy open-drain compatibility and slightly lower quiescent current.

Availability

TLV3702CDGK is available at Aetrix Electronics and suitable for portable battery monitoring, consumer medical electronics, security detection systems, and handheld instruments requiring stable component supply across industrial temperature ranges and long-life power budgets.

Supply support for TLV3702CDGK 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 company delivering analog and embedded processing solutions, with leadership in low-power signal conditioning and precision analog ICs.

The TLV370x product line was engineered specifically for ultra-low-power threshold detection in battery-constrained and harsh-environment applications, emphasizing nanopower consumption, input overvoltage resilience, and deterministic startup behavior.

FAQ

What is the maximum input voltage allowed on the TLV3702CDGK inputs?

The TLV3702CDGK inputs tolerate voltages from –0.1 V to V_CC + 5 V, with absolute maximum rating of ±20 V differential and 20 V total input voltage. This allows direct connection to unregulated battery rails or signals exceeding the supply voltage - a key advantage over standard comparators. The device remains undamaged even when V_CC is unpowered, thanks to fail-safe input architecture.

Does the TLV3702CDGK require external pull-up resistors on its outputs?

No, the TLV3702CDGK features a push-pull CMOS output stage that actively drives both high and low states, eliminating the need for external pull-up resistors. This reduces component count, saves board space, and avoids power loss associated with pull-up networks - especially valuable in nanopower designs. Each output (1OUT and 2OUT) operates independently with rail-to-rail swing.

What is the guaranteed operating temperature range for the TLV3702CDGK?

The TLV3702CDGK is a commercial-grade device specified for operation from 0°C to +70°C ambient temperature. Its electrical characteristics - including 560 nA supply current, 250 µV offset voltage, and propagation delay - are guaranteed across this range. For extended industrial use (–40°C to +125°C), the TLV3702IDGK variant is recommended instead.

How does the power-on-reset (POR) function in the TLV3702CDGK?

The TLV3702CDGK incorporates an internal POR circuit that holds both outputs low for up to 3 ms after V_CC crosses 1.5 V during power-up. This ensures a known, glitch-free startup state before the comparator begins responding to input signals. The POR also activates during brownout conditions, providing deterministic behavior during supply transients - critical for reliable wake-up and fault-detection logic.

Can the TLV3702CDGK be used with a single 3.3 V supply?

Yes, the TLV3702CDGK is fully specified for single-supply operation from 2.5 V to 16 V, including 3.3 V. At 3.3 V, it maintains 560 nA per channel supply current, supports input common-mode up to 8.3 V, and delivers rail-to-rail push-pull outputs. Its low minimum supply enables compatibility with modern low-voltage microcontrollers and energy-harvesting systems.