Texas Instruments TLV4082DRYR

Overview

TLV4082DRYR 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 supply current. It is used in electricity meters to detect overvoltage on AC/DC rails via external resistor dividers.

For engineers reviewing the TLV4082DRYR datasheet, TLV4082DRYR pinout, TLV4082DRYR application, or TLV4082DRYR equivalent, this page provides verified functional context, validated package mapping (µSON-6), confirmed pin roles, real-world timing behavior (tPD(r) = 5.5 µs), and two technically documented alternative comparators for dual-rail monitoring designs.

Technical Context

The TLV4082DRYR implements two independent comparators, each with fixed internal reference thresholds (VIT+ = 1.194 V, VIT– = 1.134 V) and built-in 60 mV hysteresis-no external feedback required. Its inputs tolerate voltages up to 5.5 V regardless of V+ supply level, enabling fault-tolerant monitoring during power-up or brownout conditions.

Each channel uses an open-drain output stage capable of sinking up to 5 mA while allowing pull-up to 5.5 V independently of V+, supporting mixed-voltage interface logic. Output assertion occurs when INx falls below VIT– (OUTx → low), and deassertion occurs when INx rises above VIT+ (OUTx → high-impedance).

Key Specifications

Pinout & Package

TLV4082DRYR is housed in a 1.45 mm × 1.00 mm, 6-pin µSON (DRY) package with wettable flanks for automated optical inspection. The package is RoHS-compliant and rated for operation up to +125°C junction temperature.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV4082DRYR, TLV4062DRYR removes pull-up dependencies but loses voltage-level flexibility, while MAX9062AUT+T trades 6× higher current and added design complexity for speed - making TLV4082DRYR optimal for ultra-low-power, mixed-voltage, space-constrained monitoring.

Availability

TLV4082DRYR 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 production lifecycles.

Supply support for TLV4082DRYR 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 signal chain and low-power design.

The TLV4082DRYR belongs to TI's TLV40x2 family of dual comparators engineered specifically for ultra-low-power, high-accuracy voltage supervision in battery-powered and industrial equipment.

FAQ

What is the function of the VIT+ and VIT– thresholds in TLV4082DRYR?

The TLV4082DRYR uses VIT+ = 1.194 V and VIT– = 1.134 V as its rising and falling input thresholds, respectively. When IN1 or IN2 rises above VIT+, the corresponding open-drain output transitions to high-impedance; when the input falls below VIT–, the output is actively pulled low. This 60 mV hysteresis window prevents chatter due to noise or slow-moving signals. These thresholds are factory-trimmed and guaranteed within ±1% over temperature.

Can TLV4082DRYR monitor voltages higher than its V+ supply?

Yes. TLV4082DRYR inputs (IN1 and IN2) are fault-tolerant and accept voltages from 0 V to 5.5 V regardless of the V+ supply level-even when V+ = 0 V. This allows direct monitoring of higher rails (e.g., 12 V, 24 V) using external resistor dividers, while V+ is powered from a lower auxiliary rail (e.g., 3.3 V). The device maintains high input impedance and stable thresholds under these conditions.

What pull-up resistor value should be used with TLV4082DRYR outputs?

For TLV4082DRYR, the recommended pull-up resistor range is 1.5 kΩ to 10 kΩ. A 4.7 kΩ resistor is typical for 3.3 V logic interfaces, balancing speed (tPD < 10 µs) and power (I_PU ≈ 700 µA at 3.3 V). Lower values improve rise time but increase static current; higher values reduce current but risk slow edges in noisy environments. The exact value depends on bus capacitance and required VOL specification (≤0.25 V at 0.4 mA sink).

How does TLV4082DRYR behave during power-up?

TLV4082DRYR incorporates a power-on-reset (POR) circuit that holds outputs undefined until V+ exceeds V(POR) = 0.8 V. After crossing this threshold, a 570 µs startup delay begins; outputs become valid only after this period. During the delay, IN1/IN2 sampling is suspended. This ensures reliable initialization before the comparator asserts reset or warning signals to downstream logic, preventing spurious resets in systems with ramping supplies.

Is TLV4082DRYR compatible with SOT-23-6 footprints?

No. TLV4082DRYR uses the DRY (µSON-6) package: 1.45 mm × 1.00 mm, 0.5 mm pitch, wettable flanks. It is not mechanically or electrically compatible with the larger DBV (SOT-23-6) footprint (2.90 mm × 1.60 mm, 0.95 mm pitch). Pin numbering differs: DRY assigns V+ to pin 1 and GND to pin 5, whereas DBV places V+ on pin 1 and GND on pin 5 but with reversed IN/OUT mapping. PCB redesign is required for substitution.