Diodes Incorporated LM2903M8-13

Overview

LM2903M8-13 from Diodes Incorporated is a dual precision voltage comparator in MSOP-8 package, featuring rail-to-rail input common-mode range including ground, 2 mV typical input offset voltage (non-A grade), 0.6 mA supply current at 5 V, and open-collector outputs compatible with TTL/CMOS logic. It operates from single supplies (2–36 V) or split supplies (±1.0–±18 V), enabling use in overvoltage detection, zero-crossing sensing, and level-shifting interfaces.

For engineers reviewing the LM2903M8-13 datasheet, LM2903M8-13 pinout, LM2903M8-13 application, or LM2903M8-13 equivalent, key selection criteria include input offset voltage tolerance, output sink capability (16 mA max), supply current stability across voltage range, and compatibility with mixed-voltage logic systems requiring open-collector interfacing.

Technical Context

The LM2903M8-13 integrates two independent comparators with PNP differential input stages, delivering low input bias current (25 nA typ) and input offset current (±5 nA). Its uncommitted NPN output transistors support wired-OR configurations and flexible pull-up voltage selection independent of VCC.

Designed for wide-supply operation, it maintains stable ICC (0.6 mA typ at 5 V) regardless of supply magnitude and supports differential input voltages up to 36 V-exceeding VCC-while limiting common-mode input to 0 V to (VCC − 1.5 V) at +25°C.

Key Specifications

Pinout & Package

LM2903M8-13 uses an MSOP-8 package (3.0 mm × 3.0 mm × 0.87 mm height, 0.65 mm pitch), optimized for space-constrained PCB layouts while maintaining thermal performance (θJA = 160 °C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM2903DR2G, LM2903M8-13 offers smaller MSOP-8 footprint and identical electrical specs except for package thermal resistance; versus TLV3702IDR, it trades higher supply current for proven open-collector interoperability with legacy TTL/CMOS loads and wider supply range.

Availability

LM2903M8-13 is available at Aetrix Electronics and suitable for industrial motor control, battery management systems, AC line monitoring, and mixed-voltage interface design requiring stable component supply across extended temperature ranges (−40°C to +125°C).

Supply support for LM2903M8-13 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

Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal solutions, with emphasis on high-reliability components for industrial, automotive, and computing markets.

The LM2903 series belongs to Diodes' precision analog comparator product line, engineered for robust single/dual-supply operation in harsh environments where input range, output flexibility, and long-term parametric stability are critical.

FAQ

Can LM2903M8-13 operate with a 3.3 V supply?

Yes. The LM2903M8-13 supports single-supply operation from 2 V to 36 V, making it fully functional at 3.3 V. At this voltage, typical supply current is 0.6 mA, input common-mode range extends from 0 V to 1.8 V, and output saturation voltage remains ≤200 mV at 4 mA sink load-ensuring reliable logic-level compatibility with 3.3 V CMOS inputs.

Does LM2903M8-13 require external hysteresis?

Hysteresis is not mandatory but strongly recommended for noisy input signals. The device lacks internal hysteresis; adding 1–10 mV positive feedback via resistor networks prevents oscillation during slow or noisy transitions. For clean pulse inputs (e.g., crystal oscillator outputs), hysteresis may be omitted per application note guidance in DS36779 Rev 4.

What is the maximum sink current per output?

Each output can sink up to 16 mA continuously (guaranteed minimum 6 mA), limited by internal NPN transistor β and drive capability. At 16 mA, output saturation voltage rises to ≤700 mV across full temperature range; for ≤200 mV drop, limit sink current to ≤4 mA per channel as specified in electrical characteristics.

Is LM2903M8-13 pin-compatible with LM2903DR?

No. LM2903M8-13 uses MSOP-8 (3.0 × 3.0 mm), while LM2903DR uses SO-8 (4.9 × 6.0 mm). Though both follow industry-standard dual-comparator pinout (1OUT, 1IN−, 1IN+, GND, 2IN+, 2IN−, 2OUT, VCC), physical placement, thermal pad, and solder stencil requirements differ significantly-requiring PCB redesign for substitution.