STMicroelectronics HCF4012BEY

Overview

HCF4012BEY from STMicroelectronics is a dual 4-input NAND gate IC in CMOS B-series technology, housed in a 14-pin plastic DIP package. It delivers symmetrical buffered outputs, 60 ns typical propagation delay at 10 V supply, ±100 nA input leakage at 18 V, and operates across 3–20 V supply range - enabling use in legacy industrial control logic and battery-powered instrumentation.

For engineers reviewing the HCF4012BEY datasheet, HCF4012BEY pinout, HCF4012BEY application, or HCF4012BEY equivalent, key selection criteria include its dual independent 4-input NAND structure, rail-to-rail output swing, quiescent current tested up to 20 V, and JEDEC JESD13B compliance for B-series CMOS interoperability.

Technical Context

The HCF4012BEY implements two fully independent 4-input NAND gates with buffered inputs and outputs, eliminating fan-out limitations and ensuring consistent signal integrity across both channels. Its symmetrical VOH/VOL characteristics (e.g., VOH ≥ 9.95 V at VDD = 10 V, VOL ≤ 0.05 V) support robust noise margins - 2 V minimum at 10 V supply - critical for mixed-voltage system interfacing.

Designed for wide-supply operation, it maintains functional DC specifications from 3 V to 20 V, with quiescent current fully tested per JEDEC JESD13B (≤0.5 µA typ. at 10 V, ≤5 µA max. at 20 V). Propagation delay scales predictably with VDD (60 ns typ. @ 10 V, 45 ns typ. @ 15 V), supporting timing-critical combinational logic in analog-digital hybrid systems.

Key Specifications

Pinout & Package

Package: 14-pin plastic dual in-line package (DIP-14), 0.3-inch body width, through-hole mounting compatible with legacy PCB assembly.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual 4-input NAND gate applications.

Compared with CD4012BE and MC14012BDR2G, the HCF4012BEY offers superior propagation delay and output drive in a through-hole DIP package - making it optimal for timing-sensitive industrial upgrades and field-replaceable modules where SMT rework is impractical.

Availability

HCF4012BEY is available at Aetrix Electronics and suitable for industrial control logic, legacy instrumentation interface, and automotive body electronics requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for HCF4012BEY 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, specializing in automotive, industrial, and power management ICs with broad analog and discrete portfolios.

The HCF4012BEY belongs to the HCF4000B series of radiation-hardened, wide-supply CMOS logic devices - designed specifically for reliability-critical industrial and aerospace applications where long-term parametric stability is mandatory.

FAQ

Is HCF4012BEY pin-compatible with CD4012BE?

Yes - both devices share identical 14-pin DIP pinout, logic function, and terminal assignments (VDD, VSS, NC, inputs A–D/E–H, outputs J/K). Electrical differences exist in propagation delay and output drive, but mechanical and connection compatibility is maintained per JEDEC JESD13B alignment.

What is the maximum safe operating voltage for HCF4012BEY?

The absolute maximum supply voltage is +22 V, but the recommended operating range is 3 V to 20 V. Operation above 20 V risks exceeding specified quiescent current limits and may accelerate long-term parameter drift, especially at elevated temperatures.

Can HCF4012BEY drive LED indicators directly?

No - while its IOL reaches 6.8 mA at 15 V, the device lacks built-in current limiting and is not rated for continuous DC sink/source into resistive loads like LEDs. External series resistors and thermal validation are required; dedicated LED drivers are preferred for production designs.

Does HCF4012BEY support 3.3 V logic systems?

Yes - it operates down to 3 V supply with validated DC parameters (VIH = 1.5 V min, VIL = 1.5 V max at VDD = 5 V; scaled accordingly at 3.3 V). However, propagation delay increases significantly (~250 ns typ. at 5 V, extrapolated >300 ns at 3.3 V), limiting use in high-speed 3.3 V interfaces.