Texas Instruments TLV4082DBVR

Overview

TLV4082DBVR from Texas Instruments is a dual-channel, low-power comparator with integrated precision reference and open-drain outputs, designed for voltage monitoring in space-constrained systems. It operates from 1.5 V to 5.5 V, delivers 1% threshold accuracy over –40°C to +125°C, features 60 mV internal hysteresis, and draws only 2 µA typical quiescent current - enabling reliable rail supervision in battery-powered electricity meters and thermostats.

For engineers reviewing the TLV4082DBVR datasheet, TLV4082DBVR pinout, TLV4082DBVR application, or TLV4082DBVR equivalent, this page provides verified functional context, validated SOT-23-6 pin mapping, confirmed dual-rail monitoring use cases, and two technically documented alternative comparators with explicit output topology and threshold differences.

Technical Context

The TLV4082DBVR implements two independent comparators, each with a fixed internal reference (VIT+ = 1.194 V, VIT– = 1.134 V) and built-in 60 mV hysteresis to reject noise-induced false triggering. Input thresholds are trimmed across temperature, maintaining ±1% accuracy from –40°C to +125°C.

Its open-drain outputs support level-shifting: OUT1/OUT2 can be pulled up to 5.5 V independently of V+, enabling interface with higher-voltage logic or wired-OR fault signaling. Startup delay is 570 µs after V+ crosses POR threshold (0.8 V), and propagation delays are 5.5 µs (rising) and 10 µs (falling) at 3.3 V supply.

Key Specifications

Pinout & Package

SOT-23-6 package (2.90 mm × 1.60 mm), surface-mount, lead-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-voltage monitor applications.

Compared with TLV4082DBVR, TLV4062DBVR eliminates pull-up components but sacrifices level-shifting flexibility, while MAX9022ASA+ trades 6× higher current and lower accuracy for marginal speed gain - making TLV4082DBVR optimal for ultra-low-power, precision dual-rail supervision where open-drain interoperability is essential.

Availability

TLV4082DBVR is available at Aetrix Electronics and suitable for electricity meters, thermostats, cordless power tools, and circuit breakers requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for TLV4082DBVR 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 precision analog ICs and low-power signal chain solutions.

The TLV4082DBVR belongs to TI's precision comparator portfolio, engineered specifically for ultra-low-power, high-accuracy voltage monitoring in battery-operated and industrial systems where reliability across extreme temperatures is mandatory.

FAQ

What is the function of the VIT+ and VIT– thresholds in TLV4082DBVR?

The TLV4082DBVR uses VIT+ = 1.194 V and VIT– = 1.134 V as its rising and falling input thresholds. When an input voltage (IN1 or IN2) rises above VIT+, the corresponding open-drain output (OUT1 or OUT2) transitions from low to high-impedance (i.e., pulled high externally). When the input falls below VIT–, the output is actively driven low. This 60 mV hysteresis prevents oscillation near the trip point. These thresholds are factory-trimmed and maintain ±1% accuracy from –40°C to +125°C.

Can TLV4082DBVR monitor voltages higher than its V+ supply?

Yes. The TLV4082DBVR inputs (IN1 and IN2) are fault-tolerant and accept voltages from 0 V to 5.5 V regardless of the V+ supply voltage - including when V+ = 0 V. This allows direct monitoring of higher rails (e.g., 5 V or 12 V) using an external resistor divider, while powering the TLV4082DBVR from a lower rail (e.g., 3.3 V). The device maintains high input impedance and does not draw significant current from the monitored rail.

Why does TLV4082DBVR require external pull-up resistors on OUT1 and OUT2?

Because TLV4082DBVR features open-drain outputs, it can only actively drive OUT1 and OUT2 low; it cannot source current to drive them high. Therefore, external pull-up resistors are mandatory to establish a defined logic-high state. These resistors may connect to any voltage up to 5.5 V - independent of V+ - enabling level-shifting. Typical values range from 1.5 kΩ to 10 kΩ, selected based on sink current capability (≥0.4 mA) and leakage limits (±250 nA).

How does TLV4082DBVR handle power-up sequencing?

TLV4082DBVR incorporates a power-on-reset (POR) circuit that holds outputs undefined until V+ exceeds 0.8 V. Once triggered, a 570 µs startup delay ensures internal references and comparators stabilize before outputs become valid. During this period, OUT1 and OUT2 remain in high-impedance (open-drain) state if not pulled up, preventing spurious resets. This behavior is guaranteed across –40°C to +125°C and all supply voltages from 1.5 V to 5.5 V.

Is TLV4082DBVR pin-compatible with TLV4062DBVR?

Yes - TLV4082DBVR and TLV4062DBVR share identical SOT-23-6 pinout (V+, OUT1, OUT2, IN2, GND, IN1) and electrical specifications except output stage topology. TLV4062DBVR uses push-pull outputs (no pull-ups needed), while TLV4082DBVR uses open-drain outputs (pull-ups required). Swapping them requires modifying the output termination network but no PCB layout change.