Texas Instruments TLV3401IDR

Overview

TLV3401IDR from Texas Instruments is a single-channel nanopower comparator with open-drain CMOS output, designed for ultra-low-power sensing and threshold detection in battery-critical systems. It operates from 2.5 V to 16 V, draws only 470 nA supply current per channel at 25°C, supports input common-mode voltage from –0.1 V to VCC + 5 V, and is rated for industrial temperature range (–40°C to +125°C). It is used in portable medical devices and wireless security sensors where quiescent current and rail-exceeding input range are essential.

For engineers reviewing the TLV3401IDR datasheet, TLV3401IDR pinout, TLV3401IDR application, or TLV3401IDR equivalent, key selection criteria include its 470 nA supply current, –0.1 V to VCC + 5 V input range, open-drain output requiring external pull-up, 5-pin SOT-23 package, and compatibility with 1.25 V reference-based threshold detection circuits.

Technical Context

The TLV3401IDR implements a precision comparator core with input stage optimized for nanopower operation while maintaining robust input overvoltage tolerance up to VCC + 5 V. Its open-drain output stage interfaces directly with logic-level pull-up networks or microcontroller GPIOs, enabling flexible voltage translation and wired-OR configurations.

It features reverse-battery protection up to 18 V, differential input resistance of 300 MΩ, and propagation delays as low as 55 µs (high-to-low) under 50 mV overdrive at 5 V supply. Input offset voltage is specified at 250 µV (typ), with drift of 3 µV/°C - enabling stable DC threshold detection across temperature without trimming.

Key Specifications

Pinout & Package

TLV3401IDR is housed in a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm, optimized for space-constrained portable designs. The package is RoHS-compliant and moisture-sensitive level 1 (MSL-1).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV3401IPWR and TLV7011DBVR, TLV3401IDR uniquely balances rail-exceeding input capability, reverse-battery protection, and industrial temperature rating in the smallest SOT-23 footprint - making it the optimal choice for high-reliability, space-constrained, battery-powered sensing where signal integrity and fault resilience are non-negotiable.

Availability

TLV3401IDR is available at Aetrix Electronics and suitable for portable medical equipment, wireless security systems, and handheld instruments requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for TLV3401IDR 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 decades of expertise in precision signal conditioning and low-power design.

The TLV340x family was engineered specifically for nanopower threshold detection in battery-constrained applications - emphasizing ultra-low IQ, rail-exceeding inputs, and robustness in harsh or safety-critical environments.

FAQ

What is the maximum input voltage the TLV3401IDR can tolerate?

The TLV3401IDR supports an input common-mode voltage range from –0.1 V to VCC + 5 V, with absolute maximum input voltage limited to VCC + 5 V or 20 V - whichever is smaller. This allows safe high-side sensing above the supply rail, such as monitoring battery voltage in series-connected cells, without external clamping circuitry. Exceeding these limits risks permanent damage.

Does the TLV3401IDR require an external pull-up resistor on its output?

Yes, the TLV3401IDR features an open-drain CMOS output and requires an external pull-up resistor to define the high-state voltage level. TI specifies performance with a 1-MΩ pull-up to VCC; values between 10 kΩ and 10 MΩ are usable depending on speed vs. power trade-offs. Without a pull-up, the output remains floating and cannot drive logic-high signals reliably.

Is the TLV3401IDR suitable for automotive applications?

The TLV3401IDR is qualified for industrial temperature range (–40°C to +125°C) and includes reverse-battery protection up to 18 V, making it suitable for non-safety-critical automotive cabin modules (e.g., infotainment power sequencing, HVAC sensor interfaces). However, it is not AEC-Q200 qualified, so it should not be used in airbag, braking, or ADAS systems without additional qualification testing.

What is the typical propagation delay of the TLV3401IDR at 5 V supply?

At 5 V supply and 25°C, the TLV3401IDR exhibits typical propagation delays of 55 µs (tPHL, high-to-low) and 80 µs (tPLH, low-to-high) under 50 mV input overdrive. Delays increase significantly at lower overdrive levels (e.g., 300 µs tPHL at 2 mV overdrive), so design margins must account for worst-case signal slew rates in threshold detection timing budgets.

Can the TLV3401IDR operate from a 2.5 V supply across the full industrial temperature range?

No - while the TLV3401IDR's recommended operating conditions list 2.5 V as the minimum supply for C-suffix (0°C to +70°C) versions, the I-suffix version (TLV3401IDR) requires a minimum of 2.7 V across the full –40°C to +125°C range. Operating below 2.7 V at extreme temperatures may result in undefined behavior, increased propagation delay, or failure to switch reliably.