Texas Instruments LMV339MTX

Overview

LMV339MTX from Texas Instruments is a quad low-voltage rail-to-rail input comparator with open-collector outputs, designed for space-constrained portable electronics. It operates from 2.7 V to 5 V, draws 140–200 µA total supply current (35–50 µA per channel), features 200 mV typical output saturation voltage at 4 mA sink, and delivers 200 ns propagation delay at 5 V with 100 mV overdrive. It is used in battery-powered voltage monitoring and window detection circuits.

For engineers reviewing the LMV339MTX datasheet, LMV339MTX pinout, LMV339MTX application, or LMV339MTX equivalent, key selection considerations include its 14-pin TSSOP package, ground-sensing input range (−0.1 V to 4.2 V at 5 V), open-collector output compatibility with CMOS/TTL logic, industrial temperature rating (−40°C to +85°C), and low-power operation in dual-supply or single-supply configurations.

Technical Context

The LMV339MTX implements four independent comparators with bipolar input stages and NPN open-collector output transistors, enabling wired-OR functionality and flexible level translation. Its input common-mode range extends 0.1 V below ground and up to 0.8 V below V+, supporting true ground-referenced sensing in single-supply systems.

Each comparator exhibits 1.7–7 mV input offset voltage (typical), 5 µV/°C offset drift, and 25–250 nA input bias current (5 V). Propagation delay varies with overdrive: 200 ns (100 mV) to 600 ns (10 mV) at 5 V, and it supports output sink currents up to 10 mA while maintaining low saturation voltage.

Key Specifications

Pinout & Package

LMV339MTX is packaged in a 14-pin TSSOP (PW package), body size 5.00 mm × 4.40 mm, with exposed pad for thermal enhancement. Pin functions are validated per TI SNOS018H datasheet (Rev H, Dec 2014).

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM339DT and TLV339IPWR, the LMV339MTX uniquely balances ultra-low power (140–200 µA), 2.7–5 V operation, open-collector flexibility, and industrial temperature support-making it optimal for next-generation portable and embedded power management.

Availability

LMV339MTX is available at Aetrix Electronics and suitable for battery voltage monitoring, power sequencing, window detection, and portable device wake-up applications requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.

Supply support for LMV339MTX 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 conditioning and low-power design.

The LMV33x-N series was developed to replace legacy LM339/393 comparators in space- and power-constrained applications, delivering identical functionality at significantly lower supply current and extended low-voltage operation.

FAQ

What is the maximum supply voltage for LMV339MTX?

The absolute maximum supply voltage for LMV339MTX is 5.5 V, but the recommended operating range is 2.7 V to 5 V. Operation above 5 V risks permanent damage and violates the device's specified DC electrical characteristics. At 5 V, LMV339MTX delivers optimal propagation delay (200 ns) and output sink capability (10 mA), making it ideal for standard logic interfacing and battery-powered systems.

Does LMV339MTX support rail-to-rail input?

LMV339MTX supports rail-to-rail input common-mode range down to −0.1 V below ground and up to 4.2 V at 5 V supply - effectively ground-sensing but not full rail-to-rail on the high side. This allows direct interface with 0 V referenced sensors and dividers, while maintaining robust noise immunity. The input stage uses bipolar technology, not CMOS, so it does not swing fully to V+ but provides superior speed and offset stability in low-voltage operation.

Can LMV339MTX outputs be wired together?

Yes - all four outputs of LMV339MTX are open-collector and can be safely wired together with a single pull-up resistor to implement wired-OR logic. This is commonly used in window comparators, fault aggregation, or priority interrupt generation. TI specifies that the output transistor can sink up to 10 mA per channel, and the shared pull-up should be sized between 1 kΩ and 10 kΩ to ensure proper logic levels and avoid excessive power dissipation.

What is the typical input offset voltage of LMV339MTX?

The typical input offset voltage of LMV339MTX is 7 mV at 25°C and 5 V supply, with a guaranteed maximum of 9 mV across the full industrial temperature range (−40°C to +85°C). This offset enables reliable detection of analog signals differing by ≥15 mV, and TI specifies average drift of only 5 µV/°C - ensuring stable threshold accuracy over temperature without calibration.

Is LMV339MTX pin-compatible with LM339?

No - LMV339MTX is not pin-compatible with the legacy LM339. While both are quad comparators in 14-pin packages, LMV339MTX uses TSSOP-14 (PW), whereas standard LM339 is offered in SOIC-14 (D) or PDIP-14. More critically, pin assignments differ: LMV339MTX places V− on Pin 8 and V+ on Pin 12, while LM339 places V+ on Pin 14 and V− on Pin 3. Direct replacement requires PCB redesign or adapter.