onsemi NLSF302MNR2

Overview

NLSF302MNR2 from onsemi is a quad 2-input NOR gate IC fabricated in advanced high-speed CMOS silicon gate technology, delivering TTL-compatible propagation delay (3.6 ns typ at 5.0 V) with CMOS-level power dissipation (2.0 µA max ICC), operating across 2.0–5.5 V supply range, and supporting mixed-voltage interfacing (inputs tolerate up to 7.0 V) in logic-level translation applications.

For engineers reviewing the NLSF302MNR2 datasheet, pinout, applications, or equivalent options, key selection considerations include its QFN-16 package, balanced tPLH/tPHL delays, high noise immunity (28% VCC), input overvoltage tolerance, and compatibility with LVTTL, LVCMOS, and 5 V/3.3 V system interfaces.

Technical Context

The NLSF302MNR2 implements four independent 2-input NOR gates in a single monolithic die, with three-stage internal circuitry including buffered outputs for stable switching and enhanced noise rejection. Its inputs feature power-down protection and accept voltages up to 7.0 V-enabling direct interfacing between 5.0 V controllers and 3.3 V or 2.0 V logic domains without level-shifting circuitry.

Designed for low-noise digital systems, it specifies VOLP ≤ 0.8 V (max) and exhibits latchup immunity > 300 mA per JEDEC JESD78. The device supports operation from −40°C to +85°C and meets ESD robustness requirements of >2000 V (HBM) and >200 V (MM), making it suitable for industrial control and embedded interface applications where signal integrity and reliability are critical.

Key Specifications

Pinout & Package

The NLSF302MNR2 is housed in a Pb-free QFN-16 (3 mm × 3 mm, 0.5 mm pitch) package with wettable flanks (Case 485G), optimized for automated optical inspection and high-density PCB layouts. Thermal pad on underside improves power dissipation and solder joint reliability.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad 2-input NOR gate applications.

Compared with SN74LVC02APWR and 74AUP1G02GW,125, the NLSF302MNR2 uniquely combines 5 V input tolerance, 3.6 ns speed at 5 V, and quad integration in a 3×3 mm QFN-making it the only drop-in solution for mixed-voltage industrial control logic where reliability, density, and interface flexibility are jointly required.

Availability

NLSF302MNR2 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, and medical infusion pump UI logic requiring stable component supply, long-term lifecycle assurance, and Pb-free compliance.

Supply support for NLSF302MNR2 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

onsemi (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient electronics, delivering high-performance analog, logic, power, and sensing solutions for automotive, industrial, cloud, and medical markets.

The NLSF302MNR2 belongs to onsemi's high-speed logic family designed specifically for voltage-domain bridging and noise-immune digital interfacing in harsh-environment embedded systems.

FAQ

What is the maximum input voltage rating for NLSF302MNR2, and does it apply regardless of VCC?

The NLSF302MNR2 supports DC input voltages from −0.5 V to +7.0 V on all input pins, independent of the VCC supply voltage. This specification is explicitly confirmed in the Absolute Maximum Ratings table and enables direct connection to 5 V sources even when VCC is set to 2.0 V or 3.3 V-eliminating external level-shifting components. This behavior is validated across the full operating temperature range (−40°C to +85°C) and is a defining feature of the NLSF302MNR2 versus standard LVC or AUP logic families.

Can NLSF302MNR2 be used in a 2.0 V system, and what are the timing implications?

Yes, the NLSF302MNR2 is fully specified down to 2.0 V VCC, with AC electrical characteristics guaranteed at that rail. At 2.0 V, the typical propagation delay increases to 9.5 ns (max 13.0 ns) with CL = 50 pF, compared to 3.6 ns at 5.0 V. Output drive strength reduces to ±2 mA, which remains sufficient for driving light capacitive loads or other 2 V logic inputs. All DC parameters-including VIH/VIL thresholds and ICC-remain valid per the Recommended Operating Conditions table, ensuring functional correctness in ultra-low-voltage battery-powered designs.

Does NLSF302MNR2 require external pull-up or pull-down resistors on unused inputs?

Yes, unused inputs on the NLSF302MNR2 must be tied to a defined logic level-either VCC or GND-via hard connection (not floating). This requirement is explicitly stated in the datasheet's "Precautions" section to prevent undefined output states, increased ICC, or potential oscillation due to high-impedance inputs. Internal pull-ups or pull-downs are not provided; external termination is mandatory. Leaving inputs unconnected violates the Recommended Operating Conditions and may cause erratic behavior or excessive power consumption in the NLSF302MNR2.

What is the thermal pad connection requirement for the QFN-16 package of NLSF302MNR2?

Per the mechanical drawing (Case 485G), the exposed thermal pad on the underside of the NLSF302MNR2 QFN-16 package must be soldered to a solid copper thermal land on the PCB, electrically connected to GND. This connection is required for both thermal performance (reducing θJA) and mechanical reliability. The datasheet recommends a 2×2 mm thermal pad with 4–6 thermal vias (0.3 mm diameter) to an internal GND plane. Failure to connect the thermal pad may result in elevated junction temperature, reduced lifetime, and non-compliance with the 450 mW power dissipation rating.

How does the noise immunity specification (VNIH = VNIL = 28% VCC) translate to actual voltage margins at 3.3 V operation?

At VCC = 3.3 V, the NLSF302MNR2 provides a noise margin of 0.924 V (28% of 3.3 V) above VIH and below VIL. With VIH(min) = 2.31 V and VIL(max) = 0.99 V at 3.3 V, this means valid high inputs can dip by up to 0.924 V before misreading as low, and valid low inputs can rise by up to 0.924 V before misreading as high. This quantified margin-confirmed in the Noise Characteristics table-ensures robust operation in electrically noisy environments such as motor-driven industrial panels, where transient coupling into logic traces is common. The NLSF302MNR2's buffered output stage further stabilizes this margin during dynamic switching.