STMicroelectronics LM2903WYPT

Overview

LM2903WYPT from STMicroelectronics is a low-power, dual-voltage comparator in TSSOP8 package, operating from +2 V to +36 V (or ±1 V to ±18 V), with 0.4 mA supply current per comparator, 25 nA typical input bias current, and 250 mV typical output saturation voltage at 4 mA sink-used in automotive-level voltage monitoring and threshold detection circuits.

For engineers reviewing the LM2903WYPT datasheet, LM2903WYPT pinout, LM2903WYPT application, or LM2903WYPT equivalent, key selection criteria include single-supply rail-to-rail input capability, ESD protection (2 kV HBM), TTL/CMOS-compatible open-collector outputs, and AEC-Q100 qualified automotive grade performance across –40 °C to +125 °C.

Technical Context

The LM2903WYPT integrates two independent comparators with PNP input stages enabling input common-mode voltage range extending to the negative rail-even under single-supply operation. Its differential input voltage range equals the full supply voltage, supporting robust overvoltage tolerance on either input.

Output stage uses open-collector NPN transistors compatible with TTL, DTL, ECL, MOS, and CMOS logic families. Internal ESD protection (2 kV HBM) is implemented on all pins without external components, and thermal resistance junction-to-ambient is 120 °C/W in TSSOP8 package.

Key Specifications

Pinout & Package

TSSOP8 (Thin Shrink Small Outline Package, 8-pin, 0.65 mm pitch) with exposed pad not electrically connected; RoHS-compliant, ECOPACK2 qualified.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual low-power comparator applications.

Compared with LM2903DT and TLV3702IDR, the LM2903WYPT uniquely combines AEC-Q100 qualification, 36 V operation, and TSSOP8 footprint-making it optimal for space-constrained automotive voltage supervision where reliability and voltage headroom are non-negotiable.

Availability

LM2903WYPT is available at Aetrix Electronics and suitable for automotive battery management, industrial overvoltage protection, and sensor threshold detection requiring stable component supply across extended temperature and long product lifecycles.

Supply support for LM2903WYPT 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing analog, MCU, power, and sensor solutions for automotive, industrial, and consumer markets.

The LM2903 series belongs to ST's precision analog comparators product line, engineered for robust, low-cost voltage decision-making in harsh environments-including automotive under-hood and industrial control applications.

FAQ

Can LM2903WYPT operate with a single 3.3 V supply?

Yes. The LM2903WYPT supports single-supply operation from +2 V to +36 V. At 3.3 V, it delivers 0.4 mA supply current per comparator, 25 nA input bias current, and maintains rail-to-rail input common-mode range down to GND. Output saturation remains ≤400 mV at 4 mA sink, ensuring compatibility with 3.3 V logic families when paired with appropriate pull-up resistors.

Does LM2903WYPT require external pull-up resistors on its outputs?

Yes. Both outputs are open-collector NPN transistors and must be pulled up to a defined voltage (e.g., VCC+ or another logic rail) via external resistors. Typical values range from 1 kΩ to 10 kΩ depending on speed and load current requirements. No internal pull-ups are present-omitting external resistors results in undefined high-state behavior.

What is the maximum differential input voltage the LM2903WYPT can tolerate?

The LM2903WYPT supports differential input voltage equal to the full supply voltage (e.g., 36 V for VCC+ = 36 V, VCC− = GND). Per Absolute Maximum Ratings, Vid may range from VCC− −0.3 V to VCC+ +0.3 V. Exceeding this risks permanent damage-even with current limiting-so input clamping is recommended for transient-prone applications.

Is the LM2903WYPT pin-compatible with standard LM2903 variants in TSSOP8?

Yes. LM2903WYPT shares identical TSSOP8 pinout and electrical behavior with LM2903PT and LM2903WPT. The "Y" suffix denotes AEC-Q100 qualification and enhanced screening, but mechanical footprint, terminal functions, and DC/AC specifications are fully aligned-enabling drop-in replacement in existing layouts where automotive qualification is added post-design.