STMicroelectronics LM2903HYPT

Overview

LM2903HYPT from STMicroelectronics is a low-power dual voltage comparator in TSSOP8 package, operating from 2 V to 36 V single supply or ±1 V to ±18 V dual supplies, with 0.4 mA typical supply current, 25 nA input bias current, and input common-mode range extending to ground - used in automotive sensor signal conditioning and battery monitoring circuits.

For engineers reviewing the LM2903HYPT datasheet, LM2903HYPT pinout, LM2903HYPT application, or LM2903HYPT equivalent, key selection factors include its AEC-Q100 qualified automotive grade, rail-to-rail input capability down to ground, TTL/CMOS-compatible open-collector outputs, and guaranteed operation from −40 °C to +150 °C.

Technical Context

The LM2903HYPT integrates two independent comparators with PNP input stages enabling input common-mode voltage down to ground on single-supply operation. Its differential input voltage range equals the full supply voltage (±36 V), supporting overvoltage-tolerant sensing.

Output stage uses open-collector NPN transistors with 250 mV typical saturation voltage at 4 mA sink current, compatible with TTL, DTL, ECL, MOS, and CMOS logic families. Large-signal response time is 500 ns for TTL-level transitions.

Key Specifications

Pinout & Package

TSSOP8 (Thin Shrink Small Outline Package, 8-pin), 3.0 mm × 6.4 mm body, 0.65 mm pitch, exposed pad optional, ECOPACK® compliant, AEC-Q100 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 LM2903HYPT uniquely combines AEC-Q100 Grade 0 qualification, TSSOP8 compactness, ground-sensing inputs, and proven 150 °C operation - making it the only choice for under-hood automotive comparators requiring long-term reliability.

Availability

LM2903HYPT is available at Aetrix Electronics and suitable for automotive battery management, industrial overvoltage protection, and temperature sensor interface applications requiring stable component supply across extended temperature ranges and automotive-grade traceability.

Supply support for LM2903HYPT 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, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and analog components for automotive, industrial, and consumer markets.

The LM2903H series targets automotive and high-reliability industrial applications, delivering robust, low-power dual comparators with extended temperature operation and AEC-Q100 qualification.

FAQ

Can LM2903HYPT operate with a single 3.3 V supply?

Yes. The LM2903HYPT supports single-supply operation from 2 V to 36 V. At 3.3 V, it delivers full functionality including input common-mode range down to ground and open-collector output compatible with 3.3 V logic - verified per Table 2 (V_ICM = 0 V to V_CC+ − 1.5 V) and Figure 4 (V_OL ≤ 400 mV at I_SINK = 4 mA).

Does LM2903HYPT require external pull-up resistors on its outputs?

Yes. Its outputs are open-collector NPN transistors and must be pulled up to a valid logic high voltage (e.g., V_CC+ or another rail). Typical pull-up values range from 2.2 kΩ to 10 kΩ depending on speed and load; 4.7 kΩ is commonly used for 5 V or 3.3 V interfacing with standard logic families.

What is the maximum differential input voltage the LM2903HYPT can tolerate?

The absolute maximum differential input voltage is ±36 V, as specified in Table 1 (V_ID). This allows one input to swing up to 36 V above the other without damage - critical for detecting faults in high-voltage industrial buses or surviving load-dump transients in automotive systems.

Is LM2903HYPT pin-compatible with standard LM2903 variants?

No. While electrically identical to other LM2903H variants, LM2903HYPT uses the TSSOP8 package (0.65 mm pitch), whereas legacy versions like LM2903YDT use SO8 (1.27 mm pitch). Footprint and soldering requirements differ; mechanical adaptation is required for drop-in replacement.