Texas Instruments LMV7235M5

Overview

LMV7235M5 from Texas Instruments is an ultra-low-power, rail-to-rail input comparator with open-drain output, designed for single-supply operation at 2.7 V to 5.5 V. It delivers 75 ns propagation delay at 5 V, consumes only 65 µA supply current, and supports input common-mode voltage from −0.2 V to V₊ + 0.2 V - enabling ground- and supply-sensing in portable battery-powered systems.

For engineers reviewing the LMV7235M5 datasheet, LMV7235M5 pinout, LMV7235M5 application, or LMV7235M5 equivalent, this page provides verified functional identity, validated SOT-23-5 pin mapping, confirmed low-power high-speed comparator use cases, and two technically documented alternative parts with explicit interface and loading differences.

Technical Context

The LMV7235M5 uses a complementary PNP/NPN input stage to achieve rail-to-rail input operation across −0.2 V to V₊ + 0.2 V, with input bias current ≤400 nA and CMRR ≥52 dB. Its open-drain output requires an external pull-up resistor, enabling wired-OR logic and level-shifting to voltages between V₋ and V₊.

Propagation delay remains stable across temperature (−40°C to +85°C) and load capacitance (≤15 pF), with typical t_PD = 75 ns at 100 mV overdrive and 5 V supply. Input offset voltage is ±1 mV (typ), and output leakage is ≤3 nA - critical for precision threshold detection in low-current systems.

Key Specifications

Pinout & Package

LMV7235M5 is packaged in a 5-pin SOT-23 (DBV) with 2.90 mm × 1.60 mm body size, optimized for space-constrained PCB layouts in handheld and wearable electronics.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LMV7235M5, LMV7239M5 eliminates pull-up components but forfeits level-shifting capability, while TLV3501DBVR trades 43× higher supply current for 28× faster response - making LMV7235M5 optimal for battery-critical, bus-integrated, medium-speed threshold detection.

Availability

LMV7235M5 is available at Aetrix Electronics and suitable for portable medical monitors, battery management systems, and industrial sensor interfaces requiring stable component supply with long-term manufacturability and consistent parametric performance.

Supply support for LMV7235M5 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 LMV7235M5 belongs to TI's ultra-low-power comparator product line, engineered specifically for energy-constrained, space-limited applications where rail-to-rail input range, nanosecond timing, and microamp quiescent current are simultaneously required.

FAQ

What is the maximum capacitive load the LMV7235M5 can drive while maintaining 75 ns propagation delay?

The LMV7235M5 maintains its specified 75 ns propagation delay at 5 V with C_LOAD ≤15 pF, as characterized in the Electrical Characteristics table. With heavier loads (e.g., 30 pF), propagation delay increases to ~100 ns due to RC time constant effects on the open-drain output - requiring careful PCB layout and minimized trace capacitance for timing-critical designs using LMV7235M5.

Does the LMV7235M5 require external hysteresis for stable operation with slow-moving input signals?

Yes - the LMV7235M5 has high gain but no internal hysteresis. When input differential voltage changes slowly near the threshold, output oscillation may occur. External positive feedback (e.g., resistor network from V_OUT to IN⁺) must be added for noise immunity. The LMV7235M5 datasheet provides exact hysteresis calculation methods for both inverting and non-inverting configurations.

Can the LMV7235M5 operate from a 1.8 V supply?

No - the LMV7235M5 is specified for 2.7 V to 5.5 V operation only. At 1.8 V, internal biasing fails, resulting in undefined output behavior and potential damage. For 1.8 V systems, consider TI's TLV360x series comparators, which are explicitly rated down to 1.4 V and maintain rail-to-rail input functionality.

What is the purpose of the 200 mV beyond-rail input common-mode range in the LMV7235M5?

The −0.2 V to V₊ + 0.2 V input range allows the LMV7235M5 to directly monitor signals referenced to ground (e.g., shunt voltage) or to V₊ (e.g., supply rail droop) without level-shifting circuitry. This capability simplifies designs like battery fuel gauging or overvoltage protection where inputs exceed nominal supply boundaries - a key differentiator of LMV7235M5 versus standard rail-to-rail comparators.

Is the LMV7235M5 pin-compatible with the LMV7239M5?

Yes - LMV7235M5 and LMV7239M5 share identical 5-pin SOT-23 (DBV) packaging and pinout (V_OUT, V₋, IN⁺, IN⁻, V₊). However, their output stages differ fundamentally: LMV7235M5 is open-drain, while LMV7239M5 is push-pull. Swapping them requires verifying external pull-up presence (for LMV7235M5) or removal (for LMV7239M5) to avoid contention or incorrect logic levels.