Texas Instruments TLV3492AIDR

Overview

TLV3492AIDR from Texas Instruments is a dual, nanopower, push-pull output comparator optimized for ultra-low-power battery-operated systems. It operates from 1.8 V to 5.5 V, draws only 0.8 µA typical quiescent current per channel, features rail-to-rail input with 200-mV beyond-rail common-mode range, and delivers 6-µs propagation delay at 100-mV overdrive - enabling precise voltage monitoring in portable medical devices and wireless sensors.

For engineers reviewing the TLV3492AIDR datasheet, TLV3492AIDR pinout, TLV3492AIDR application, or TLV3492AIDR equivalent, key selection criteria include its dual-channel push-pull CMOS output (no external pull-up required), sub-1-µA per-channel supply current, 1.8-V minimum operating voltage, and compatibility with space-constrained SOT-23-8 layouts in low-voltage, single-cell designs.

Technical Context

The TLV3492AIDR integrates two independent comparators sharing a common supply domain, each with rail-to-rail input stage and complementary CMOS push-pull output. Its input stage supports common-mode voltages from (V–) – 0.2 V to (V+) + 0.2 V, enabling direct sensing of signals near or slightly beyond supply rails without level-shifting.

Each channel exhibits ±15 mV maximum input offset voltage, 60–74 dB common-mode rejection ratio, and 100 ns typical rise/fall times into 10-pF load - confirming suitability for precision threshold detection and fast-response wake-up circuits where shoot-through current must be avoided.

Key Specifications

Pinout & Package

The TLV3492AIDR is housed in an 8-pin SOT-23 package (2.90 mm × 1.63 mm body size) with exposed pad not electrically connected. This micro-sized surface-mount package supports high-density PCB layouts in portable instrumentation and compact IoT endpoints.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV3492AIDR, TLV3402IDR requires external pull-ups and cannot drive logic-high directly, while LP311M/NOPB consumes over 100× more current and cannot operate below 2 V - making TLV3492AIDR the sole option meeting strict 1.8-V, sub-1-µA, push-pull requirements for modern portable electronics.

Availability

TLV3492AIDR is available at Aetrix Electronics and suitable for portable medical equipment, wireless security peripherals, and handheld test instruments requiring stable component supply across extended production lifecycles.

Supply support for TLV3492AIDR 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 and embedded processing technologies, with decades of expertise in precision signal chain and low-power design.

The TLV349x product line was engineered specifically for nanopower, single-supply, rail-to-rail comparator applications in battery-constrained systems - emphasizing minimal IQ, wide input range, and push-pull output integrity.

FAQ

What is the maximum operating temperature for the TLV3492AIDR?

The TLV3492AIDR is specified for continuous operation from –40°C to +125°C ambient temperature. This full industrial temperature range is validated per TI's production test flow and confirmed in Section 7.3 of the SBOS262E datasheet. Thermal metrics including RθJA = 135.4°C/W (SOT-23) ensure reliable junction temperature control under typical PCB layouts. TLV3492AIDR maintains its 0.85-µA typical IQ and 6-µs propagation delay across this entire range.

Does the TLV3492AIDR support rail-to-rail input and output?

Yes, the TLV3492AIDR supports rail-to-rail input with a common-mode range extending 200 mV beyond both supply rails (V– – 0.2 V to V+ + 0.2 V), and rail-to-rail push-pull CMOS output that swings within 200 mV of V+ and V– under 5-mA load. This capability is explicitly documented in the Features section and Section 7.7 Electrical Characteristics of the SBOS262E datasheet. TLV3492AIDR does not require external level-shifting circuitry for most single-supply sensor interfaces.

Can the TLV3492AIDR be used with a 1.8-V supply?

Yes, the TLV3492AIDR is fully specified and characterized down to 1.8 V supply voltage - the absolute minimum operating voltage stated in Section 7.3 Recommended Operating Conditions. At 1.8 V, it maintains 6-µs propagation delay (tPLH/tPHL), ±15-mV input offset voltage, and 0.85-µA typical quiescent current per channel. This makes TLV3492AIDR uniquely suited for direct connection to single LiFePO₄ or two alkaline cell sources without LDO regulation.

What is the purpose of the NC pins on the TLV3492AIDR?

The TLV3492AIDR has no NC (No Connect) pins - all eight pins in its SOT-23-8 package are functional: pins 1/7 (OUT A/B), 2/6 (–IN A/B), 3/5 (+IN A/B), 4 (V–), and 8 (V+). This differs from the TLV3491 (5-pin SOT-23), which includes NC pins. The pin mapping is verified in Section 6 Pin Configuration and Functions of SBOS262E, confirming full utilization of the 8-pin layout for dual-channel operation in TLV3492AIDR.

How does the TLV3492AIDR handle input overvoltage conditions?

The TLV3492AIDR incorporates internal ESD diodes on both inputs, rated for ±3000 V HBM, and tolerates momentary input voltages up to ~500 mV beyond the supply rails if input current is limited to ≤10 mA. As stated in Section 8.3.2, this is achieved by adding a series input resistor - for example, a 1-kΩ resistor limits current to safe levels during transient overvoltage events. TLV3492AIDR does not include integrated overvoltage protection beyond this diode clamping behavior.