Texas Instruments LMV331IDCKT

Overview

LMV331IDCKT from Texas Instruments is a single-channel, low-voltage, open-collector comparator optimized for portable and space-constrained applications. It operates from 2.7 V to 5.5 V, draws only 26 µA typical supply current, features rail-to-rail input common-mode range including ground, and delivers 150 mV typical output saturation voltage. It is used in battery-powered vacuum robots and server PSU monitoring circuits where low power and small footprint are critical.

For engineers reviewing the LMV331IDCKT datasheet, LMV331IDCKT pinout, LMV331IDCKT application, or LMV331IDCKT equivalent, key selection considerations include its SC-70 (5-pin) package size, open-drain output compatibility with mixed-voltage logic interfaces, guaranteed operation down to –40°C, and input offset voltage of ≤7 mV at 25°C.

Technical Context

The LMV331IDCKT implements a PNP-input stage enabling input common-mode voltage range from ground to V_CC – 0.7 V, supporting accurate sensing near 0 V in single-supply systems. Its open-drain NPN output stage allows flexible pull-up configuration across logic families (e.g., 1.8 V, 3.3 V, or 5 V), enabling level-shifting and wired-AND functionality.

It functions strictly as a voltage comparator-no internal hysteresis or reference-requiring external design of input conditioning and output pull-up. Propagation delay is 350 ns (typ.) at 100 mV overdrive and 5 V supply, scaling predictably with supply voltage and overdrive per verified test data.

Key Specifications

Pinout & Package

LMV331IDCKT is housed in a 5-pin SC-70 package (1.25 mm × 2.00 mm body), optimized for high-density PCB layouts in handheld and IoT devices.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LMV331IDCKT, LMV331IDBVR offers identical performance in a larger, more manufacturable package, while TLV331IDCKR trades speed and offset for lower power and lower-voltage operation-neither is pin-compatible nor functionally interchangeable without circuit validation.

Availability

LMV331IDCKT is available at Aetrix Electronics and suitable for vacuum robot battery management, server PSU protection, and cordless tool motor control requiring stable component supply across extended production lifecycles.

Supply support for LMV331IDCKT 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 components.

The LMV331IDCKT belongs to TI's general-purpose low-voltage comparator family, designed specifically for cost-sensitive, space-constrained applications demanding low power, wide supply range, and robust industrial temperature operation.

FAQ

What is the operating temperature range for LMV331IDCKT?

The LMV331IDCKT is specified for operation from –40°C to +125°C ambient temperature. This range is validated per JEDEC JESD22-A104 and applies across the full 2.7 V to 5.5 V supply range. The device maintains its 26 µA typical supply current and ≤7 mV input offset voltage within this envelope, making LMV331IDCKT suitable for under-hood automotive auxiliary modules and industrial motor drives.

Does LMV331IDCKT have internal hysteresis?

No, LMV331IDCKT does not include internal hysteresis. It is a basic comparator with no built-in positive feedback. External hysteresis must be added via resistor feedback from OUT to IN+ if noise immunity is required in the application. The absence of hysteresis ensures predictable threshold behavior but necessitates careful PCB layout and input filtering when used with noisy signals-this is explicitly documented in Section 7.2.2.1 of the LMV331IDCKT datasheet.

Can LMV331IDCKT drive an LED directly?

Yes, LMV331IDCKT can drive an LED directly using its open-drain output. With a 5 V supply and 1 kΩ pull-up resistor, it sinks up to 23 mA (per datasheet Section 5.5), sufficient for most indicator LEDs. The 150 mV typical saturation voltage ensures >4.8 V forward drop across the LED, minimizing power loss in the comparator. Always verify LED forward voltage and current requirements against the actual sink current at the chosen pull-up value and supply voltage when designing with LMV331IDCKT.

What is the maximum input differential voltage for LMV331IDCKT?

The absolute maximum differential input voltage (V_ID) for LMV331IDCKT is ±5.5 V, as specified in Section 5.1 of the datasheet. This limit applies regardless of supply voltage and must not be exceeded to prevent permanent damage. In normal operation, differential inputs should remain within the common-mode range (–0.1 V to V_CC – 0.7 V) for accurate comparison; exceeding this range may cause output phase reversal or undefined behavior, even if within the ±5.5 V absolute rating.

Is LMV331IDCKT RoHS compliant?

Yes, LMV331IDCKT is RoHS compliant. Per TI's PACKAGE OPTION ADDENDUM (dated 9-Mar-2026), the part carries "Yes" in the RoHS column and uses NiPdAu lead finish. It meets EU Directive 2011/65/EU and subsequent amendments, with homogeneous material lead content below 0.1 wt%. Full compliance documentation, including SDoC and test reports, is available through TI's Quality & Environmental page for LMV331IDCKT.