Texas Instruments TLV3401IP

Overview

TLV3401IP from Texas Instruments is a single-channel nanopower open-drain comparator with 470 nA supply current, –0.1 V to VCC + 5 V input common-mode range, and 2.5 V to 16 V supply voltage support. It operates across –40°C to +125°C and is used in battery-powered threshold detection circuits such as low-power medical sensors and wireless security triggers.

For engineers reviewing the TLV3401IP datasheet, TLV3401IP pinout, TLV3401IP application, or TLV3401IP equivalent, key selection criteria include ultra-low quiescent current, rail-exceeding input range, open-drain output compatibility with external pull-up networks, and SOT-23-5 packaging for space-constrained portable designs.

Technical Context

The TLV3401IP implements a precision comparator core with input stage biasing enabling operation down to 2.5 V while maintaining 250 µV typical input offset voltage and 55–88 dB CMRR across 0–15 V common-mode range. Its open-drain CMOS output requires external pull-up but supports level-shifting and wired-OR logic configurations.

Reverse battery protection up to 18 V and 5 V input overvoltage tolerance beyond VCC ensure robustness in harsh or miswired environments. Propagation delays (tPLH/tPHL) scale inversely with input overdrive - from 175 µs at 2 mV to 30 µs at 50 mV - enabling configurable speed/power trade-offs in sensing applications.

Key Specifications

Pinout & Package

TLV3401IP is housed in a 5-pin SOT-23 package (2.90 mm × 1.60 mm body), optimized for high-density PCB layouts in portable electronics. The package features gull-wing leads compatible with standard reflow processes and provides thermal resistance RθJA = 237.8°C/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV3401IDBVR, TLV3401IP offers identical performance in a through-hole-compatible tube format ideal for lab validation; versus TLV7011DBVR, TLV3401IP trades 120 nA higher ICC for 10 V wider supply range, 5 V input overvoltage headroom, and reverse-battery survivability - critical for field-deployed equipment.

Availability

TLV3401IP 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 and traceable sourcing.

Supply support for TLV3401IP 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 ultra-low-power threshold detection in battery-operated systems, emphasizing nanopower consumption, rail-exceeding inputs, and robustness in real-world deployment environments.

FAQ

What is the maximum supply voltage for TLV3401IP?

The absolute maximum supply voltage for TLV3401IP is 17 V, with recommended operating range from 2.5 V to 16 V. Exceeding 17 V risks permanent damage. The device also features reverse-battery protection up to –18 V on the VCC pin, making it resilient to incorrect battery installation in field-serviceable devices. This specification is validated per TI's SLCS135B datasheet Section 7.1.

Does TLV3401IP support rail-to-rail input operation?

TLV3401IP does not provide rail-to-rail input - instead, it supports an extended common-mode range from –0.1 V to VCC + 5 V. This means inputs can go 5 V above the positive supply rail without damage or phase reversal, enabling direct high-side sensing (e.g., 12 V bus monitoring on a 5 V system). The –0.1 V lower limit allows slight negative transients without clipping, unlike true rail-to-rail input comparators.

What pull-up resistor value is specified for TLV3401IP's open-drain output?

TI specifies TLV3401IP performance with a 1 MΩ pull-up resistor to VCC, as confirmed in Section 9.2.2 and Figure 16 of the SLCS135B datasheet. Using 1 MΩ ensures full compliance with propagation delay (55 µs tPLH), output leakage (<50 pA), and VOL (8 mV at 2 µA) specifications. Lower values increase power consumption; higher values degrade speed and noise immunity.

Is TLV3401IP suitable for automotive under-hood applications?

Yes - TLV3401IP (I-suffix version) is rated for –40°C to +125°C operation and features thermal metrics including RθJA = 237.8°C/W (SOT-23) and 150°C max junction temperature. Its reverse-battery protection (–18 V), 5 V input overvoltage tolerance, and ±2000 V HBM ESD rating meet key requirements for engine-control and body-electronics modules where voltage transients and thermal stress are common.

How does TLV3401IP differ from TLV3402 in pin compatibility?

TLV3401IP (SOT-23-5) and TLV3402 (dual-channel, 8-pin SOIC/VSSOP) are not pin-compatible. TLV3401IP has five pins: OUT, GND, IN+, IN−, VCC. TLV3402 uses eight pins with two independent channels (1IN−, 1IN+, 1OUT, 2IN−, 2IN+, 2OUT, VCC, GND). No shared pin mapping exists - board redesign is required when substituting between them. Functionally, both share identical per-channel specs including 470 nA ICC and VCC + 5 V input range.