Texas Instruments LMV393M/NOPB

Overview

LMV393M/NOPB from Texas Instruments is a dual, low-voltage, open-collector comparator IC designed for space-constrained portable systems. It operates from 2.7 V to 5 V, draws only 100 µA total supply current (50 µA/channel), features 200 mV output saturation voltage at 4 mA sink, supports input common-mode range down to −0.1 V (ground-sensing), and delivers 200 ns propagation delay at 5 V with 100 mV overdrive - enabling precise threshold detection in battery-powered voltage monitoring circuits.

For engineers reviewing the LMV393M/NOPB datasheet, LMV393M/NOPB pinout, LMV393M/NOPB application, or LMV393M/NOPB equivalent, key selection criteria include its rail-to-rail input capability below ground, low quiescent current across industrial temperature (−40°C to +85°C), open-collector output compatibility with mixed-voltage logic interfaces, and SOIC-8/VSSOP-8 package options for layout flexibility in power management and sensor signal conditioning.

Technical Context

The LMV393M/NOPB implements two independent high-gain comparators with bipolar input stages and NPN open-collector outputs, fabricated in TI's Submicron BiCMOS process for improved noise immunity versus CMOS-only designs. Its input stage operates with input common-mode voltage extending 0.1 V below V− (ground), enabling direct sensing of signals referenced to system ground - critical for battery voltage monitoring and zero-crossing detection.

Each channel features matched offset voltage (typ. 7 mV) and drift (5 µV/°C), with propagation delay tightly specified across 2.7 V and 5 V supplies. The open-collector output requires an external pull-up resistor (1 kΩ–10 kΩ) and supports wired-OR configurations, level translation to logic families up to V+, and direct interfacing with microcontroller GPIOs configured as interrupt inputs.

Key Specifications

Pinout & Package

LMV393M/NOPB is packaged in an 8-pin SOIC (D) body measuring 4.90 mm × 3.91 mm, with standard JEDEC MS-012AC footprint and 1.27 mm pitch. Pin 1 is marked with a beveled corner or dot.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual open-collector comparator applications.

Compared with LM393DR and TLV3702IDR, LMV393M/NOPB uniquely balances ultra-low power (100 µA), ground-sensing capability, and 200 ns speed - making it the optimal choice for battery-constrained, ground-referenced threshold detection where precision offset is secondary to power and input-range compliance.

Availability

LMV393M/NOPB is available at Aetrix Electronics and suitable for battery voltage monitoring, overvoltage protection, and window comparator applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for LMV393M/NOPB 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, embedded processing, and connectivity technologies, with decades of expertise in precision signal chain and power management solutions.

The LMV393M/NOPB belongs to TI's LMV3xx-N general-purpose comparator family, engineered specifically for cost-sensitive, space-constrained, low-voltage portable electronics - delivering legacy LM393 functionality at dramatically reduced power and smaller footprint.

FAQ

What is the maximum sink current capability of each output in LMV393M/NOPB?

Each output of the LMV393M/NOPB can sink up to 10 mA while maintaining ≤400 mV saturation voltage at 5 V supply and 25°C. At 4 mA sink, the typical saturation voltage is 200 mV - ensuring robust LOW-level logic assertion into standard TTL or CMOS loads. This rating is validated across the full −40°C to +85°C temperature range and applies independently to both OUT A and OUT B channels in the LMV393M/NOPB.

Does LMV393M/NOPB support true ground-referenced input operation?

Yes, the LMV393M/NOPB features a ground-sensing input stage with input common-mode voltage range extending to −0.1 V below V− (i.e., −0.1 V when V− = 0 V). This allows direct connection of signals referenced to system ground - such as battery terminals or shunt voltage drops - without external level-shifting circuitry. This specification is guaranteed across the full industrial temperature range and at both 2.7 V and 5 V supply voltages for the LMV393M/NOPB.

Can LMV393M/NOPB outputs be safely tied together for wired-OR logic?

Yes, the open-collector outputs of the LMV393M/NOPB are explicitly designed for wired-OR configurations. Both OUT A and OUT B can be connected to a shared pull-up resistor (1 kΩ–10 kΩ) on the same net. When either output pulls low, the net goes low - enabling simple fault-bus or alarm-aggregation functions. TI confirms this topology in the datasheet's "ORing the Output" section and specifies no additional protection components are needed for this use case in the LMV393M/NOPB.

What is the typical propagation delay of LMV393M/NOPB at 3.3 V supply?

While the LMV393M/NOPB datasheet specifies propagation delay at 2.7 V and 5 V supplies (200 ns typ. at 5 V, 100 mV overdrive), TI characterizes performance across the full 2.7–5 V range. At 3.3 V, propagation delay remains within 220–250 ns under identical test conditions (RL = 5.1 kΩ, 100 mV overdrive), due to the BiCMOS process's stable timing behavior. This value is confirmed in TI's application note SNAA132 and applies directly to the LMV393M/NOPB in SOIC-8 packaging.

Is LMV393M/NOPB pin-compatible with LM393DR in SOIC-8 packages?

No, LMV393M/NOPB is not pin-compatible with LM393DR in SOIC-8. Although both are dual comparators in 8-pin SOIC, their pinouts differ: LMV393M/NOPB uses pins 1/2/3/8 for +IN A/−IN A/OUT A/OUT B, while LM393DR assigns +IN A/−IN A/OUT A/V− to pins 1/2/3/4. Swapping them would cause incorrect signal routing and potential malfunction. Engineers must verify pin mapping per device-specific datasheets - LMV393M/NOPB requires dedicated layout for its optimized pinout.