Texas Instruments TL331LVDBVR

Overview

TL331LVDBVR from Texas Instruments is a single-channel, low-voltage rail-to-rail input comparator with open-drain output, operating from 1.65 V to 5.5 V supply. It delivers 400 µV typical input offset voltage, 600 ns typical propagation delay, and 25 µA/Ch typical quiescent current across –40°C to +125°C, enabling precision threshold detection in battery-powered motor control and server power management.

For engineers reviewing the TL331LVDBVR datasheet, TL331LVDBVR pinout, TL331LVDBVR application, or TL331LVDBVR equivalent, this page provides verified electrical specs, SOT-23-5 package details, Power-On-Reset behavior, rail-to-rail input tolerance up to 6 V, and direct alternatives for low-voltage comparator replacement in industrial and automotive subsystems.

Technical Context

The TL331LVDBVR implements a high-impedance CMOS input stage with rail-to-rail common-mode range extending 0.1 V beyond supply rails, supported by internal Power-On-Reset (POR) logic that holds output in High-Z until V_CC ≥ 1.65 V. Its open-drain output requires external pull-up and sinks up to 100 mA short-circuit current while maintaining <300 mV VOL at 4 mA load over full temperature range.

Input bias current is 5 pA typical at V_CM = V_S/2, enabling high-impedance sensing in vacuum robot feedback loops and cordless tool battery monitoring. The device features 2 kV HBM ESD protection and failsafe operation-no phase inversion occurs even when inputs exceed V_CC by up to 0.3 V.

Key Specifications

Pinout & Package

TL331LVDBVR is housed in a 5-pin SOT-23 (DBV) package measuring 1.60 mm × 2.90 mm, optimized for space-constrained PCB layouts in server PSUs and motor drives.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TL331DBVR, TL331LVDBVR offers lower offset, tighter temperature range, and guaranteed POR-critical for reliable startup in battery-powered tools. Versus LM393LVDR, it provides half the channel count in a smaller SOT-23-5, reducing board area where single-threshold detection suffices.

Availability

TL331LVDBVR is available at Aetrix Electronics and suitable for server PSU, cordless power tool, and wireless infrastructure applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for TL331LVDBVR 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 communications markets.

The TL331LV family was designed specifically for low-voltage (≤5 V) replacement of legacy comparators-delivering improved offset, speed, and robustness while maintaining pin compatibility with TL331 in SOT-23-5.

FAQ

What is the maximum input voltage allowed on TL331LVDBVR pins?

The TL331LVDBVR supports input voltages from –0.3 V to 6 V relative to GND, regardless of supply voltage. This rail-to-rail input capability with failsafe operation means inputs can exceed VCC by up to 0.3 V without damage or phase inversion-enabling direct connection to unregulated sensor outputs in vacuum robot systems without external clamping.

Does TL331LVDBVR have a built-in Power-On-Reset function?

Yes, TL331LVDBVR includes an integrated Power-On-Reset (POR) circuit that holds the open-drain output in a High-Z state until VCC reaches and stabilizes at ≥1.65 V. This prevents output transients during power-up and power-down sequences-critical for avoiding unintended motor activation in cordless power tools and false alarms in server PSU supervision circuits.

Can TL331LVDBVR replace standard TL331 in existing designs?

TL331LVDBVR is specified as an improved replacement for TL331 in ≤5 V applications. It shares the same SOT-23-5 package and pinout but adds POR, lower offset (±0.4 mV vs. ±6 mV), lower IQ (25 µA vs. 1.5 µA), and extended temperature range (–40°C to +125°C). Direct substitution is valid when supply stays within 1.65–5.5 V and POR behavior is acceptable.

What is the output configuration of TL331LVDBVR and how should it be used?

TL331LVDBVR features an open-drain output requiring an external pull-up resistor. It sinks up to 100 mA short-circuit current and delivers <300 mV VOL at 4 mA load across –40°C to +125°C. For 3.3 V logic interfacing, a 10 kΩ pull-up to 3.3 V is typical; for 1.8 V systems, a 4.7 kΩ pull-up ensures adequate rise time while minimizing static current.

Is TL331LVDBVR suitable for automotive applications?

TL331LVDBVR is qualified for operation from –40°C to +125°C and features 2 kV HBM ESD protection, making it suitable for non-safety-critical automotive applications such as infotainment cluster voltage supervision and body control module sub-system monitoring. It is not AEC-Q200 qualified; for safety-critical functions like airbag or braking systems, consult TI's automotive-grade comparator portfolio.