Texas Instruments LMV7239M7

Overview

LMV7239M7 from Texas Instruments is a rail-to-rail input, push-pull output voltage comparator optimized for ultra-low-power, high-speed operation in 2.7-V to 5.5-V single-supply systems. It delivers 75 ns propagation delay at 5 V with only 65 µA supply current, supports input common-mode range from −0.2 V to V_CC + 0.2 V, and operates across −40°C to +85°C - enabling use in battery-powered zero-crossing detectors and portable voltage monitoring circuits.

For engineers reviewing the LMV7239M7 datasheet, LMV7239M7 pinout, LMV7239M7 application, or LMV7239M7 equivalent, key selection considerations include its push-pull output eliminating external pull-up requirements, guaranteed 75-ns timing at 100-mV overdrive, rail-to-rail input capability for ground- and supply-referenced sensing, and availability in space-constrained SC70-5 packaging.

Technical Context

The LMV7239M7 employs complementary PNP/NPN input stages to achieve > rail-to-rail common-mode input range (−0.2 V to V_CC + 0.2 V), enabling direct ground- and supply-sensing without level shifting. Its push-pull output stage provides low-impedance sourcing (up to 55 mA) and sinking (up to 4 mA) without external components.

Propagation delay remains stable across temperature (±5 ns from −40°C to +85°C at 20-mV overdrive) and load capacitance (≤100 pF), with skew <1 ns between rising/falling edges. Input offset voltage is ±1 mV (typ) at 5 V, and CMRR reaches 67 dB - supporting precision threshold detection in noisy environments.

Key Specifications

Pinout & Package

LMV7239M7 is packaged in a 5-pin SC70 (DGK) package with nominal body size 2.00 mm × 1.25 mm, optimized for high-density PCB layouts in portable electronics.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LMV7239M5 and TLV3501DBVR, the LMV7239M7 uniquely balances ultra-low power (65 µA), rail-to-rail input (−0.2 V to V_CC + 0.2 V), and compact SC70 packaging - making it optimal for space- and energy-constrained portable systems requiring robust voltage sensing.

Availability

LMV7239M7 is available at Aetrix Electronics and suitable for portable voltage monitoring, zero-crossing detection, high-speed oscillator generation, and window comparator applications requiring stable component supply with guaranteed long-term manufacturability.

Supply support for LMV7239M7 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 company specializing in analog and embedded processing technologies, with leadership in precision analog, power management, and signal chain solutions.

The LMV7239M7 belongs to TI's ultra-low-power, high-speed comparator product line - designed specifically for battery-operated and space-constrained systems needing fast, accurate voltage decision-making with minimal quiescent current.

FAQ

What is the maximum operating supply voltage for the LMV7239M7?

The LMV7239M7 has an absolute maximum supply voltage rating of 6 V, but its recommended operating range is 2.7 V to 5.5 V. Operation at 5.5 V is fully characterized across temperature and ensures specified propagation delay (75 ns), input offset (±1 mV), and output drive capability. Exceeding 5.5 V risks parametric degradation or reliability issues not covered by warranty.

Does the LMV7239M7 require external pull-up resistors on its output?

No, the LMV7239M7 features a push-pull output stage and does not require external pull-up resistors. Unlike the open-drain LMV7235, the LMV7239M7 actively drives both high and low states - enabling direct connection to CMOS/TTL inputs, microcontroller GPIOs, or LED drivers without additional components.

Can the LMV7239M7 accurately compare signals below ground potential?

Yes, the LMV7239M7 supports an input common-mode voltage range extending 200 mV below ground (down to −0.2 V), verified across its full operating temperature range. This allows direct comparison of negative-going signals - such as AC-coupled sensor outputs or battery discharge curves - without level-shifting circuitry.

What is the typical propagation delay variation of the LMV7239M7 over temperature?

At 20-mV overdrive and 15-pF load, the LMV7239M7 exhibits ≤5 ns increase in propagation delay from −40°C to +85°C (e.g., 89 ns → 94 ns). This tight thermal stability ensures consistent timing in oscillator circuits and sampling systems deployed in uncontrolled environments.

Is the LMV7239M7 pin-compatible with other comparators in the LMV723x family?

The LMV7239M7 shares identical pinout (SC70-5) and pin functions with LMV7235M7, allowing direct substitution in layouts where push-pull output is acceptable. However, functional differences - such as LMV7235's open-drain output requiring pull-up - mean system-level validation is required before replacement.