Texas Instruments TLV3492AIDCNR

Overview

TLV3492AIDCNR from Texas Instruments is a dual nanopower push-pull output comparator optimized for ultra-low-power, single-supply systems. It operates from 1.8 V to 5.5 V, draws only 0.8 µA typical supply current per channel, features rail-to-rail input beyond supply rails (±200 mV), and delivers 6 µs propagation delay at 100-mV overdrive - enabling precise threshold detection in battery-powered medical sensors and wireless security nodes.

For engineers reviewing the TLV3492AIDCNR datasheet, TLV3492AIDCNR pinout, TLV3492AIDCNR application, or TLV3492AIDCNR equivalent, key selection criteria include its nanopower consumption, push-pull CMOS output (no external pull-up required), dual-channel SOT-23-8 package, input common-mode range extending 200 mV beyond rails, and compatibility with 1.8-V two-cell battery systems.

Technical Context

The TLV3492AIDCNR implements a fully differential input stage with ESD-protected inputs and a rail-to-rail push-pull CMOS output stage that eliminates shoot-through current and supports direct interfacing with digital logic. Its architecture enables stable operation down to 1.8 V while maintaining ±15 mV max input offset voltage and 74 dB CMRR over –40°C to 125°C.

Each of its two independent comparators features identical electrical characteristics: 0.85–1.2 µA quiescent current per channel, 12 µs max t_PLH at 10-mV overdrive, and 100 ns rise/fall times into 10-pF load - all specified across full supply (1.8–5.5 V) and temperature (–40°C to 125°C) ranges.

Key Specifications

Pinout & Package

TLV3492AIDCNR is housed in an 8-pin SOT-23 package (2.90 mm × 1.63 mm body), optimized for space-constrained portable designs. The package is RoHS-compliant, lead-free, and rated for operation from –40°C to 125°C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV3402IDR and LP311MX/NOPB, TLV3492AIDCNR uniquely combines nanopower consumption, rail-to-rail input, push-pull output, and micro-SOT-23 packaging - making it the only choice for compact, long-life, single-supply battery systems requiring direct logic interfacing.

Availability

TLV3492AIDCNR is available at Aetrix Electronics and suitable for portable medical equipment, wireless security systems, handheld instruments, ultra-low-power data loggers, and battery-backed industrial sensors requiring stable component supply across extended production lifecycles.

Supply support for TLV3492AIDCNR 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 delivering analog and embedded processing solutions, with leadership in low-power signal chain and power management technologies.

The TLV349x product line was designed specifically for nanopower, single-supply, rail-to-rail sensing applications in portable and energy-harvesting systems - prioritizing ultra-low IQ, wide supply range, and small-footprint packaging.

FAQ

What is the maximum operating temperature for TLV3492AIDCNR?

The TLV3492AIDCNR is rated for continuous operation from –40°C to +125°C ambient temperature. This extended range is validated per TI's thermal characterization data (R_θJA = 135.4°C/W for SOT-23-8), making it suitable for under-hood automotive modules and industrial edge sensors where thermal stress is critical. TLV3492AIDCNR maintains full electrical specifications across this range.

Does TLV3492AIDCNR require external hysteresis for noise immunity?

Yes - TLV3492AIDCNR has a typical input offset voltage of ±3 mV and no internal hysteresis. For noisy input signals, external positive feedback (e.g., resistor divider from OUT to +IN) is required to prevent multiple output transitions near the threshold. The datasheet provides hysteresis calculation equations and example topologies for TLV3492AIDCNR implementation.

Can TLV3492AIDCNR operate from a 1.5-V alkaline battery?

No - TLV3492AIDCNR has a minimum specified supply voltage of 1.8 V. While it may function intermittently at 1.5 V, TI does not guarantee performance (e.g., propagation delay, offset voltage, or output drive strength) below 1.8 V. For true 1.5-V operation, consider TI's TLV7012, which is specified down to 1.4 V.

Is TLV3492AIDCNR pin-compatible with other TLV349x variants?

TLV3492AIDCNR shares the same 8-pin SOT-23 pinout with TLV3492IDR and TLV3492IDCKR, but is not pin-compatible with TLV3491 (5-pin SOT-23) or TLV3494 (14-pin TSSOP/SOIC). All TLV3492 variants use identical pin functions: pins 1/7 = OUT A/B, 2/6 = –IN A/B, 3/5 = +IN A/B, 4 = V–, 8 = V+.

What decoupling capacitance is recommended for TLV3492AIDCNR?

TI recommends a 0.01-µF ceramic capacitor placed as close as possible to the V+ pin (pin 8), plus a 10-µF bulk electrolytic or tantalum capacitor elsewhere on the supply rail. This dual-capacitor approach suppresses both high-frequency switching noise and low-frequency supply droop - critical for maintaining TLV3492AIDCNR's 0.85-µA quiescent current and 6-µs propagation delay stability.