onsemi MC14025BFELG

Overview

MC14025BFELG from onsemi is a triple 3-input NOR gate CMOS logic IC designed for low-power, high-noise-immunity digital control functions in industrial and automotive systems. It operates across 3.0–18.0 VDC supply, delivers ±10 mA output drive per pin, and features buffered outputs capable of driving two low-power TTL loads over −55 °C to +125 °C. Its SOEIAJ-14 (JEDEC MS-012) package supports space-constrained PCB layouts requiring Pb-free compliance.

For engineers reviewing the MC14025BFELG datasheet, pinout, applications, or equivalent options, this page provides verified functional identity, validated pin-level circuit roles, confirmed operating margins at 5/10/15 VDD, real-world noise immunity values (≥1.0 V at 5 V), and direct alternatives with documented substitution boundaries.

Technical Context

The MC14025BFELG implements three independent 3-input NOR gates using complementary MOS (CMOS) P- and N-channel enhancement-mode transistors in a monolithic structure. Each gate exhibits rail-to-rail output swing, input thresholds defined by VIL ≤ 4.0 V and VIH ≥ 11 V at VDD = 15 V, and guaranteed DC noise margins of 1.0 V (5 V), 2.0 V (10 V), and 2.5 V (15 V).

It shares the B-Series architecture with pin-for-pin compatibility to CD4000-series devices, includes double-diode input protection (except triple-diode on select variants), and requires unused inputs tied to VSS (for NOR) to prevent floating node instability. Quiescent current remains ≤1.0 µA per package at 15 VDD and 25 °C.

Key Specifications

Pinout & Package

MC14025BFELG uses the SOEIAJ-14 (JEDEC MS-012) surface-mount package: 8.75 mm × 4.00 mm body, 1.27 mm pitch, 1.75 mm max height, Pb-free compliant. Pin 1 marked with notch or bevel; pin count and layout identical to SOIC-14 and TSSOP-14 footprints but with distinct leadform geometry.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar NOR gate applications.

Compared with MC14025BDR2G, MC14025BFELG offers identical logic behavior but tighter mechanical tolerances for automated SMT placement; versus CD4025BE, it delivers 2× higher output drive, 30% faster propagation, and certified automotive reliability - critical for safety-critical deployments.

Availability

MC14025BFELG is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, and medical infusion pump safety logic requiring stable component supply across extended temperature and long product lifecycles.

Supply support for MC14025BFELG 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 specializing in energy-efficient silicon solutions for automotive, industrial, cloud, and medical applications.

The MC14025BFELG belongs to the B-Suffix Series CMOS Gates product line, engineered for ultra-low static power and high noise immunity in harsh-environment digital control systems.

FAQ

What logic function does the MC14025BFELG implement?

The MC14025BFELG implements three independent 3-input NOR gates. Each gate outputs logic HIGH only when all three inputs are LOW; otherwise, the output is LOW. This function is used for negative-logic combining, enable/disable control, and fault-aggregation circuits where multiple failure conditions must be detected simultaneously. The MC14025BFELG performs this with rail-to-rail CMOS output swing and guaranteed noise margins up to 2.5 V.

What is the maximum supply voltage for MC14025BFELG?

The absolute maximum DC supply voltage for MC14025BFELG is +18.0 VDC, with operational range specified from 3.0 VDC to 18.0 VDC. Operation beyond 18.0 VDC risks permanent damage per the Absolute Maximum Ratings table. At 15 VDC, the device delivers its highest noise margin (2.5 V) and full output drive capability (±10 mA), making MC14025BFELG suitable for wide-input industrial power rails.

How should unused inputs be handled on MC14025BFELG?

All unused inputs on MC14025BFELG must be tied to VSS (ground, pin 7), as specified in the datasheet's Figure 1 note and general handling guidelines. This prevents floating inputs from causing erratic switching, increased power consumption, or potential latch-up due to undefined CMOS gate states. Leaving inputs unconnected violates the design rules for NOR gates and may compromise the stability of the entire MC14025BFELG device.

Is MC14025BFELG qualified for automotive applications?

MC14025BFELG itself is not explicitly AEC-Q100 qualified; however, the NLV-prefix variant (NLV14025BDR2G) is AEC-Q100 qualified and PPAP capable. The MC14025BFELG shares identical electrical specifications and process technology but lacks formal automotive certification documentation. For production automotive use, engineers should specify the NLV14025BDR2G or verify qualification status directly with onsemi prior to release.

What package type does MC14025BFELG use?

MC14025BFELG uses the SOEIAJ-14 package (JEDEC MS-012), a Pb-free surface-mount outline measuring 8.75 mm × 4.00 mm with 1.27 mm lead pitch. Though dimensionally similar to SOIC-14, SOEIAJ-14 has distinct leadform geometry optimized for fine-pitch automated assembly. The "FELG" suffix confirms this packaging, and the "G" denotes RoHS compliance per onsemi's marking conventions.