STMicroelectronics HCF4071BEY

Overview

HCF4071BEY from STMicroelectronics is a quad 2-input OR gate IC in CMOS B-series technology, operating across 3–20 V supply, with typical propagation delay of 60 ns at 10 V, ±100 nA input leakage at 18 V, and output drive capability up to ±6.8 mA at 15 V - used for discrete logic implementation in industrial control panels and legacy instrumentation interfaces.

For engineers reviewing the HCF4071BEY datasheet, HCF4071BEY pinout, HCF4071BEY application, or HCF4071BEY equivalent, key selection criteria include supply voltage range (3–20 V), guaranteed noise margin (≥2 V at 10 V), quiescent current test coverage (100% tested), and DIP-14 package compatibility with through-hole PCB assembly workflows.

Technical Context

The HCF4071BEY implements four independent positive-logic OR gates using standard CMOS B-series process architecture, supporting rail-to-rail input and output swing. It meets JEDEC JESD13B specifications and delivers symmetrical tPHL/tPLH propagation delays (e.g., 50–60 ns typ. at 10 V) with defined transition times under 50 pF capacitive load.

Its absolute maximum ratings allow operation up to 22 V supply and −55 °C to +125 °C ambient, while recommended conditions specify 3–20 V VDD and full temperature range support. Input leakage remains ≤100 nA at 18 V, enabling low-power standby in battery-backed systems.

Key Specifications

Pinout & Package

Package: Plastic DIP-14 (dual in-line package), 0.3-inch body width, through-hole mounting, JEDEC MS-001 compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad 2-input OR gate applications.

Compared with CD4071BE and 74HC32N, the HCF4071BEY uniquely balances wide supply range (3–20 V), extended temperature qualification (−55 to +125 °C), and medium-speed performance - making it irreplaceable in legacy industrial and automotive hardware where voltage headroom and environmental ruggedness are non-negotiable.

Availability

HCF4071BEY is available at Aetrix Electronics and suitable for industrial control panels, legacy instrumentation interfaces, and automotive under-hood modules requiring stable component supply across long product lifecycles.

Supply support for HCF4071BEY 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, digital, and mixed-signal ICs for industrial, automotive, and consumer markets.

The HCF4071BEY belongs to the HCF4000B series of radiation-hardened, high-voltage CMOS logic devices - engineered specifically for reliability in harsh environments and long-lifecycle equipment.

FAQ

Is HCF4071BEY compatible with 5 V TTL logic inputs?

Yes - at VDD = 5 V, the HCF4071BEY's VIH is 3.5 V min and VIL is 1.5 V max, satisfying TTL input thresholds. Its output VOH (4.95 V) and VOL (0.05 V) also meet TTL high/low voltage requirements, enabling direct interfacing without level shifters.

Can HCF4071BEY operate reliably at 20 V supply?

Yes - the device is rated for continuous operation at 20 V (within recommended conditions), with quiescent current fully characterized up to that voltage. Absolute maximum rating is 22 V, but sustained use at 20 V is validated across the full temperature range per datasheet test data.

What is the significance of "100% tested for quiescent current"?

This means every unit undergoes production test for II (quiescent current) at VDD = 5/10/15/20 V and TA = 25 °C, ensuring no unit exceeds 0.02–150 µA depending on supply. It guarantees low static power draw critical for battery-backed or energy-harvesting systems.

Why does HCF4071BEY use "B-series" designation?

The "B" denotes STMicroelectronics' enhanced CMOS process meeting JEDEC JESD13B standards - featuring improved noise immunity, tighter parameter distribution, and guaranteed operation over extended voltage and temperature ranges versus original 4000-series devices.