Texas Instruments TLV3402IDGKRG4

Overview

TLV3402IDGKRG4 from Texas Instruments is a dual nanopower open-drain comparator with 470 nA per channel supply current, –0.1 V to VCC + 5 V input common-mode range, and operation from 2.5 V to 16 V supply. It delivers ultra-low quiescent current for battery-powered portable medical equipment and wireless security systems.

For engineers reviewing the TLV3402IDGKRG4 datasheet, TLV3402IDGKRG4 pinout, TLV3402IDGKRG4 application, or TLV3402IDGKRG4 equivalent, key selection criteria include input offset voltage (250 µV typ), propagation delay (55–300 µs), industrial temperature range (–40°C to +125°C), and VSSOP-8 package compatibility with space-constrained PCB layouts.

Technical Context

The TLV3402IDGKRG4 implements a rail-to-rail input stage enabling detection beyond supply rails, paired with open-drain CMOS outputs requiring external pull-up resistors. Its architecture supports single-supply operation down to 2.5 V while maintaining reverse battery protection up to 18 V.

Each comparator channel operates independently with matched input bias currents (80 pA typ) and differential input resistance (300 MΩ), enabling precision threshold detection in low-noise, high-impedance sensor interfaces without loading source signals.

Key Specifications

Pinout & Package

The TLV3402IDGKRG4 is housed in an 8-pin VSSOP (DGK) package measuring 3.00 mm × 3.00 mm, optimized for high-density PCB layouts with thermal performance of R_θJA = 186.8°C/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV3402IDGKRG4, TLV3402IDR offers identical functionality with updated environmental compliance, while TLV3702IDGKR trades open-drain flexibility for faster switching and simplified output drive - selection depends on whether wired-OR capability or absolute speed is prioritized in the target system.

Availability

TLV3402IDGKRG4 is available at Aetrix Electronics and suitable for portable medical equipment, wireless security systems, and handheld instruments requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for TLV3402IDGKRG4 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 specializing in analog and embedded processing technologies, with leadership in low-power signal chain solutions.

The TLV340x product line was designed specifically for ultra-low-power threshold detection in battery-operated systems, emphasizing nanopower consumption, rail-to-rail input operation, and robustness in harsh environments.

FAQ

What is the maximum supply voltage rating for TLV3402IDGKRG4?

The TLV3402IDGKRG4 has an absolute maximum supply voltage (VCC) rating of 17 V. Operation beyond this limit risks permanent device damage. The recommended operating range is 2.5 V to 16 V, with full specification compliance across –40°C to +125°C for the I-suffix version. Reverse battery protection extends to –18 V on VCC, making it suitable for applications with potential polarity reversal during battery replacement.

Does TLV3402IDGKRG4 support rail-to-rail input operation?

Yes, TLV3402IDGKRG4 supports rail-to-rail input operation with a common-mode input voltage range of –0.1 V to VCC + 5 V. This allows the device to accurately compare signals that extend below ground or exceed the positive supply rail - for example, detecting a 10 V signal on a 5 V system. The input stage remains functional and specified across this full range without phase reversal or increased offset.

What is the typical input offset voltage of TLV3402IDGKRG4 and how does it affect precision sensing?

The typical input offset voltage of TLV3402IDGKRG4 is 250 µV at 25°C, with a maximum of 3600 µV over temperature. In precision sensing applications - such as detecting a 1.25 V threshold - this offset introduces ≤0.02% error at room temperature. For higher accuracy, system-level calibration or use of the REF3312 reference (with its own 100 ppm/°C drift) can compensate for residual offset drift.

Can TLV3402IDGKRG4 be used with a single 3.3 V supply?

Yes, TLV3402IDGKRG4 is fully operational with a single 3.3 V supply, falling within its 2.5 V to 16 V recommended operating range. At 3.3 V, supply current remains at 470 nA per channel, input common-mode range spans –0.1 V to 8.3 V, and propagation delay increases slightly versus 5 V operation - all parameters remain guaranteed across –40°C to +125°C for the I-suffix variant.

Why does TLV3402IDGKRG4 require an external pull-up resistor on its outputs?

TLV3402IDGKRG4 features open-drain CMOS outputs, meaning each output can only actively pull low or enter high-impedance state. An external pull-up resistor is required to establish a defined logic-high voltage level. This architecture enables wired-OR logic, level translation between different supply domains (e.g., 3.3 V logic driving 5 V bus), and flexible interface design - all critical in mixed-voltage sensor systems where TLV3402IDGKRG4 is commonly deployed.