STMicroelectronics LMV393IDT

Overview

LMV393IDT from STMicroelectronics is a dual low-voltage rail-to-rail input comparator with open-drain outputs, designed for space-constrained portable systems. It operates from 2.7 V to 5 V, draws only 20 µA supply current per channel at 25°C, features 200 ns propagation delay (at 100 mV overdrive), supports –40°C to +125°C operation, and includes ground-sensing input common-mode range. It is used in battery-monitoring circuits within notebook power management subsystems.

For engineers reviewing the LMV393IDT datasheet, LMV393IDT pinout, LMV393IDT application, or LMV393IDT equivalent, key selection criteria include supply voltage headroom, output sink capability (up to 47 mA at 2.7 V), input offset voltage (1–7 mV), temperature stability (±5 µV/°C drift), and SO-8 package compatibility with legacy LM393 footprints.

Technical Context

The LMV393IDT implements two independent voltage comparators with rail-to-rail input stages that accept signals down to ground, enabling direct sensing of battery voltage or reference thresholds without level-shifting. Its open-drain outputs support wired-OR logic and flexible pull-up voltage selection up to 5.5 V.

It uses a CMOS input stage with 25–400 nA input bias current across temperature, delivering stable performance in low-power sensor interface and wake-up detection circuits. Propagation delay remains under 425 ns (low-to-high) and 275 ns (high-to-low) at 5 V with 100 mV overdrive and 50 pF load.

Key Specifications

Pinout & Package

LMV393IDT is housed in an SO-8 (Small Outline, 8-pin) package with standard 1.27 mm pitch, 5.0 mm × 4.0 mm body, and 1.75 mm height. It is RoHS-compliant and ECOPACK® certified.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV3702IDR and LM393DT, the LMV393IDT uniquely balances ultra-low ICC (20 µA), ground-sensing inputs, and SO-8 footprint - making it optimal for new portable designs prioritizing battery longevity and compact layout.

Availability

LMV393IDT is available at Aetrix Electronics and suitable for battery-powered notebooks, mobile phone power management, and industrial sensor nodes requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for LMV393IDT 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in automotive, industrial, and power management solutions with vertical manufacturing capabilities.

The LMV3xx series was developed specifically for low-voltage portable electronics, emphasizing minimal ICC, wide temperature operation, and small-footprint packaging to replace legacy LM393/LM339 in space- and power-sensitive applications.

FAQ

Can LMV393IDT operate with a 2.5 V supply?

No. The absolute minimum supply voltage is 2.7 V per datasheet Table 2. Operation below 2.7 V risks undefined behavior, including increased propagation delay, reduced output sink current, and potential failure to meet input common-mode or offset voltage specifications. Designers must ensure regulated 2.7–5.0 V supply rails.

Is the LMV393IDT pin-compatible with the LM393DR?

Yes, LMV393IDT uses the same SO-8 pinout as LM393DR (In1+, In1–, Out1, GND, In2–, In2+, Out2, VCC). However, LMV393IDT features rail-to-rail input and lower ICC - substituting it requires verifying that the application benefits from ground-sensing inputs and does not rely on LM393's wider supply range.

What is the maximum sink current for LMV393IDT at 125°C?

At +125°C and VCC = 2.7 V, the guaranteed minimum sink current is 10 mA (Table 4, ISINK, VOUT < 1.5 V). At 5 V supply and 125°C, it rises to 10 mA minimum - thermal derating limits performance at temperature extremes, so designs requiring >10 mA at full temperature range should verify margin with worst-case simulation.

Does LMV393IDT require external hysteresis for noisy input signals?

Yes. The LMV393IDT has no internal hysteresis. For inputs with noise exceeding its input offset voltage (1–7 mV), external positive feedback (e.g., resistor from Out1 to In1+) must be added to prevent multiple toggling. Typical hysteresis values range from 10–50 mV depending on noise amplitude and system response requirements.