Texas Instruments TLV3492AMDREP

Overview

TLV3492AMDREP from Texas Instruments is a dual, nanopower, rail-to-rail input/output comparator with push-pull CMOS output stage, 6 µs propagation delay (at 100 mV overdrive), 0.8 µA typical quiescent current per channel, and operation from 1.8 V to 5.5 V supply - used in ultra-low-power battery monitoring and reset circuits for MSP430 microcontrollers.

For engineers reviewing the TLV3492AMDREP datasheet, TLV3492AMDREP pinout, TLV3492AMDREP application, or TLV3492AMDREP equivalent, key selection criteria include input offset voltage (±15 mV max), common-mode range extending 200 mV beyond rails, SOIC-8 packaging, and guaranteed operation across –55°C to 125°C for space-constrained, extended-temperature industrial and aerospace systems.

Technical Context

The TLV3492AMDREP implements a fully differential input stage with rail-to-rail common-mode range (V– – 0.2 V to V+ + 0.2 V) and no internal hysteresis, requiring external feedback for noise immunity. Its push-pull output drives CMOS logic directly without pull-up resistors and avoids shoot-through current.

Each comparator channel operates independently with separate inputs and shared supply pins; propagation delay varies with capacitive load (e.g., 6 µs at 100 mV overdrive, CL = 10 pF) and temperature (4.5–8.0 µs across –55°C to 125°C), while quiescent current remains stable below 2.1 µA per channel over full temperature and supply range.

Key Specifications

Pinout & Package

TLV3492AMDREP is housed in an industry-standard SOIC-8 (D) package, 3.91 mm × 4.90 mm × 1.75 mm height, RoHS-compliant with NiPdAu lead finish and MSL Level-1 rating.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV3492AMDREP, TLV3492IPW offers identical functionality at lower cost but lacks military/aerospace qualification and long-term supply assurance, while LMV393QDRQ1 meets automotive standards yet sacrifices nanopower efficiency and requires board-level redesign for open-drain interfacing.

Availability

TLV3492AMDREP is available at Aetrix Electronics and suitable for battery voltage monitoring, power-on reset generation, and relaxation oscillator circuits requiring stable component supply across extended temperature and long-lifecycle programs.

Supply support for TLV3492AMDREP 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, embedded processing, and high-reliability components for industrial, aerospace, and automotive markets.

The TLV349x family was designed specifically for ultra-low-power, extended-temperature sensing and control applications where nanoscale current budgets and guaranteed operation under harsh environmental conditions are critical.

FAQ

What is the maximum operating temperature range for TLV3492AMDREP?

The TLV3492AMDREP is rated for continuous operation from –55°C to 125°C and qualified per JEDEC standards including HAST and temperature cycling. This extended range supports deployment in avionics, downhole drilling tools, and military electronics where ambient thermal extremes are routine. The device maintains full specification compliance across this entire range, including quiescent current ≤2.1 µA per channel and propagation delay ≤8.0 µs.

Does TLV3492AMDREP include internal hysteresis?

No, TLV3492AMDREP does not include internal hysteresis. Its input stage has a typical offset voltage of ±3 mV and a maximum of ±15 mV, making it susceptible to noise-induced multiple switching near the threshold. External hysteresis must be added via positive feedback (e.g., resistor network from output to non-inverting input) to stabilize switching behavior - a design approach explicitly documented in the TLV3492AMDREP datasheet for applications like reset generation and sensor threshold detection.

Can TLV3492AMDREP operate from a 1.8 V supply?

Yes, TLV3492AMDREP is fully specified to operate from 1.8 V to 5.5 V. At 1.8 V, it delivers 6 µs propagation delay (with 100 mV overdrive), rail-to-rail input common-mode range (–0.2 V to 2.0 V), and 0.85 µA typical quiescent current per channel. This makes TLV3492AMDREP ideal for single-cell LiFePO₄ or two-cell alkaline systems where headroom is constrained and power efficiency is paramount.

What package type is used for TLV3492AMDREP?

TLV3492AMDREP uses an SOIC-8 (D) package: 3.91 mm × 4.90 mm body size, 1.75 mm maximum height, with gull-wing leads and NiPdAu surface finish. It is RoHS-compliant, MSL Level-1 rated (unlimited floor life), and supplied in tape-and-reel format (2500 units per reel). The pinout matches industry-standard SOIC-8 footprints, enabling drop-in compatibility with existing PCB layouts designed for similar dual comparators.

How does the push-pull output of TLV3492AMDREP differ from open-drain comparators?

The push-pull output of TLV3492AMDREP actively drives both logic HIGH and LOW states without requiring external pull-up resistors - reducing component count, board area, and power loss associated with pull-up current. In contrast, open-drain comparators (e.g., TLV340x) only sink current and rely on external resistors to define HIGH level, introducing trade-offs in speed, power, and noise immunity. TLV3492AMDREP's push-pull stage delivers VOH within 300 mV of V+ and VOL within 300 mV of GND at 5 V, ensuring robust CMOS logic interfacing.