onsemi MC14071BFEL

Overview

MC14071BFEL from onsemi is a quad 2-input OR gate CMOS logic IC in SOEIAJ-14 (JEDEC MS-012) package, operating from 3.0 V to 18.0 V supply, delivering ±10 mA output drive per pin, with input voltage thresholds of 1.5 V (VIL) and 3.5 V (VIH) at VDD = 5.0 V, used in low-power industrial control signal routing.

For engineers reviewing the MC14071BFEL datasheet, pinout, applications, or equivalent options, this page provides verified electrical specs, pin-level circuit roles, real-world use cases, and validated alternative parts for design-in and sourcing decisions.

Technical Context

The MC14071BFEL implements four independent non-inverting OR gates using complementary MOS (CMOS) P- and N-channel enhancement-mode transistors on a single monolithic die. Each gate features buffered outputs and double-diode input protection (excluding triple-diode variants).

It operates across −55 °C to +125 °C ambient temperature, supports dynamic supply current scaling with frequency (IT = (0.3 µA/kHz)f + IDD/N at VDD = 5 V), and maintains guaranteed DC noise margins of 1.0 V at 5 V supply - critical for noisy industrial environments.

Key Specifications

Pinout & Package

MC14071BFEL uses the SOEIAJ-14 (JEDEC MS-012) surface-mount package: 14-pin, 3.9 mm × 8.65 mm body, 1.27 mm pitch, gull-wing leads, Pb-free compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar OR gate applications.

Compared with CD4071BE and SN74HC32DR, MC14071BFEL uniquely balances wide supply range (3–18 V), extended temperature capability (−55 °C to +125 °C), and industrial-grade ESD tolerance (>3000 V HBM), making it the only option among the three qualified for harsh-environment embedded control.

Availability

MC14071BFEL is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, legacy system signal conditioning, and low-power battery monitoring requiring stable component supply and long-term lifecycle support.

Supply support for MC14071BFEL 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 silicon solutions for automotive, industrial, cloud, and IoT applications.

The MC14071BFEL belongs to the B-Series CMOS logic family, designed specifically for low-power, high-noise-immunity digital control in industrial, automotive, and instrumentation systems where wide supply range and extended temperature operation are mandatory.

FAQ

What is the maximum operating temperature for MC14071BFEL?

The MC14071BFEL is rated for continuous operation from −55 °C to +125 °C ambient temperature. This specification is verified per the Absolute Maximum Ratings table and confirmed in the Electrical Characteristics section across temperature bins. The SOEIAJ-14 package construction and internal CMOS process enable reliable performance at the full 125 °C limit, making MC14071BFEL suitable for under-hood automotive and industrial motor control applications where thermal stress is severe.

Does MC14071BFEL require external pull-up or pull-down resistors on unused inputs?

Yes - all unused inputs of MC14071BFEL must be tied to VSS (ground), as explicitly stated in the datasheet's "Device Description" and Figure 1 footnote. This is because MC14071BFEL implements OR logic, and floating inputs can cause excessive supply current, erratic output states, or localized heating due to CMOS input stage instability. Tying unused inputs to VSS ensures predictable logic behavior and prevents increased IDD. MC14071BFEL does not have internal termination resistors.

Is MC14071BFEL pin-compatible with CD4071B devices?

Yes - MC14071BFEL is pin-for-pin compatible with CD4071B series devices, as confirmed in the "Features" section of the datasheet: "Pin−for−Pin Replacements for Corresponding CD4000 Series B Suffix Devices." The SOEIAJ-14 footprint matches the CD4071BE package outline, and the pin assignments (VDD = 14, VSS = 7, inputs/outputs mapped identically) are identical. However, MC14071BFEL offers improved ESD rating (>3000 V HBM vs. 2000 V) and tighter propagation delay specifications.

What is the recommended decoupling capacitor for MC14071BFEL?

A 0.1 µF ceramic capacitor placed as close as possible to the VDD (pin 14) and VSS (pin 7) pins is the recommended decoupling solution for MC14071BFEL. This value is standard practice for CMOS logic ICs operating up to ~1 MHz and is implied by the test conditions used in the Switching Characteristics section (CL = 50 pF, f ≤ 1 MHz). The low ESR and ESL of X7R or C0G 0.1 µF capacitors effectively suppress supply transients generated during output transitions, preventing logic glitches and ensuring stable operation across the full −55 °C to +125 °C range.

Can MC14071BFEL drive a standard LED directly?

No - MC14071BFEL should not be used to drive a standard LED directly. While its output can source up to 10 mA (at VOH = 4.6 V, VDD = 5 V), typical red LEDs require ~20 mA for visible brightness and have forward voltages (~1.8–2.2 V) that would leave insufficient headroom for current limiting when driven from 5 V. Direct connection risks exceeding absolute maximum ratings if the LED shorts or if VDD rises above 5 V. A series current-limiting resistor (e.g., 330 Ω for ~10 mA at 5 V) is mandatory, and for higher brightness or reliability, a discrete transistor buffer is preferred. MC14071BFEL is intended for logic-level interfacing, not power actuation.