Texas Instruments TLV3402IDGK

Overview

TLV3402IDGK from Texas Instruments is a dual-channel nanopower open-drain comparator with 470 nA per channel supply current, rail-to-rail input range (–0.1 V to VCC + 5 V), and operation from 2.5 V to 16 V supply. It delivers ultra-low quiescent power for battery-critical applications such as portable medical sensors and wireless security system voltage monitoring.

For engineers reviewing the TLV3402IDGK datasheet, TLV3402IDGK pinout, TLV3402IDGK application, or TLV3402IDGK equivalent, key selection criteria include its industrial-grade temperature range (–40°C to +125°C), VSSOP-8 package footprint, open-drain output compatibility with I²C-level logic, and reverse-battery protection up to 18 V.

Technical Context

The TLV3402IDGK implements a CMOS input stage with 80 pA typical input bias current and 250 µV maximum input offset voltage, enabling precise threshold detection in low-current signal chains. Its open-drain output requires an external pull-up resistor and supports wired-OR configurations for multi-comparator logic.

It operates across single-supply (2.5–16 V) or split-supply (±1.25 V to ±8 V) conditions, with guaranteed functionality at 2.7 V over the full –40°C to +125°C range. Input common-mode range extends 5 V beyond VCC, allowing high-side sensing without level-shifting circuitry.

Key Specifications

Pinout & Package

VSSOP-8 (DGK) package: 3.00 mm × 3.00 mm body, 0.65 mm pitch, exposed thermal pad (not electrically connected).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV3402IDGK, TLV3402IDR offers identical performance in a more manufacturable format, while TLV7012DRYR trades critical robustness features for marginal current reduction - making TLV3402IDGK the optimal balance of ultra-low power, wide input range, and field reliability.

Availability

TLV3402IDGK is available at Aetrix Electronics and suitable for portable medical equipment, wireless security systems, and handheld instruments requiring stable component supply with guaranteed long-term availability.

Supply support for TLV3402IDGK 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.

The TLV340x family was designed specifically for ultra-low-power threshold detection in battery-constrained systems, emphasizing nanopower consumption, extended input voltage range, and robust operation across harsh environmental conditions.

FAQ

What is the maximum supply voltage for TLV3402IDGK?

The absolute maximum supply voltage for TLV3402IDGK is 17 V, but the recommended operating range is 2.5 V to 16 V. Operation above 16 V risks permanent damage, even briefly. The device maintains full functionality down to 2.7 V across the industrial temperature range (–40°C to +125°C), making TLV3402IDGK suitable for brownout-prone battery systems.

Does TLV3402IDGK support rail-to-rail input operation?

Yes, TLV3402IDGK supports true rail-to-rail input operation with a common-mode range from –0.1 V to VCC + 5 V. This means it can accurately compare signals below ground (e.g., –0.1 V) or up to 5 V above the positive supply - a key capability for high-side sensing without external level shifters. This specification applies across the full –40°C to +125°C temperature range for TLV3402IDGK.

What pull-up resistor value is recommended for TLV3402IDGK's open-drain outputs?

A 1 MΩ pull-up resistor is specified in the TLV3402IDGK datasheet and used in all electrical characteristics testing. This value balances output rise time, power efficiency, and noise immunity. For faster response, values as low as 10 kΩ may be used (with increased current draw), but propagation delay and VOL specifications are only guaranteed with 1 MΩ. TLV3402IDGK's output leakage remains ≤50 pA at 25°C regardless of pull-up value.

Is TLV3402IDGK pin-compatible with other comparators in the TLV340x family?

TLV3402IDGK shares the same VSSOP-8 pinout with TLV3402IDR and TLV3402IPW, but is not pin-compatible with SOIC-8 (D) or PDIP-8 (P) variants due to different pin numbering. All TLV3402 variants have identical pin functions, so PCB layout must match the DGK package's 3.00 mm × 3.00 mm footprint and 0.65 mm pitch. TLV3402IDGK cannot substitute for TLV3401 (SOT-23-5) or TLV3404 (TSSOP-14) without board redesign.

What is the input bias current specification for TLV3402IDGK?

TLV3402IDGK has a typical input bias current of 80 pA at 25°C, with a maximum of 1500 pA across the full –40°C to +125°C operating range. This ultra-low bias enables high-impedance sensor interfacing (e.g., thermistors, pH electrodes) without significant measurement error. The input offset current is separately specified at ≤1000 pA max, ensuring matched behavior between the two channels of TLV3402IDGK.