STMicroelectronics HCF4001BEY

Overview

HCF4001BEY from STMicroelectronics is a quad 2-input NOR gate IC in CMOS B-series technology, housed in a 14-pin plastic DIP package. It delivers symmetrical output characteristics, buffered I/O, and operates across 3–20 V supply with 50 ns typical propagation delay at 10 V/50 pF load-used in digital logic interfacing, power-on reset sequencing, and discrete gate-level combinational logic in industrial control panels.

For engineers reviewing the HCF4001BEY datasheet, HCF4001BEY pinout, HCF4001BEY application, or HCF4001BEY equivalent, key selection criteria include supply voltage range (3–20 V), input leakage current (≤100 nA at 18 V), noise margin (≥2 V at 10 V), quiescent current test coverage (100% at VDD = 5/10/15/20 V), and JEDEC JESD13B compliance for B-series CMOS devices.

Technical Context

The HCF4001BEY implements four independent 2-input NOR gates using standard CMOS fabrication, with all inputs and outputs fully buffered to improve noise immunity and drive capability. Its symmetrical output stage ensures matched rise/fall times and consistent VOH/VOL across supply voltages (5/10/15 V).

It supports wide-temperature operation (−55°C to +125°C) and meets JEDEC JESD13B specifications for B-series CMOS devices. Absolute maximum VDD is 22 V, and quiescent current is specified up to 20 V with full temperature-range testing per supply condition.

Key Specifications

Pinout & Package

Package: Plastic Dual In-line Package (DIP-14), 0.3-inch body width, through-hole mount, JEDEC MS-001 compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CD4001BE and MC14001BDG, the HCF4001BEY offers superior high-voltage quiescent current validation, tighter propagation delay consistency, and DIP-14 availability - making it optimal for industrial field-replaceable modules and mixed-technology legacy upgrades.

Availability

HCF4001BEY is available at Aetrix Electronics and suitable for industrial PLC input conditioning, power sequencing control, and motor driver enable logic requiring stable component supply across extended temperature and voltage ranges.

Supply support for HCF4001BEY 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, MCU, power, and discrete components for industrial, automotive, and consumer applications.

The HCF4001BEY belongs to ST's legacy CMOS B-series logic family, engineered for robustness in harsh environments - emphasizing wide supply range, high noise immunity, and long-term reliability in unattended equipment.

FAQ

What is the maximum recommended supply voltage for continuous operation of the HCF4001BEY?

The absolute maximum supply voltage is 22 V, but the recommended operating range is 3 V to 20 V. Continuous operation at 20 V is fully characterized and tested per JEDEC JESD13B, including quiescent current and output drive performance across −55°C to +125°C. Operation above 20 V risks parametric shift and accelerated aging.

Can the HCF4001BEY directly drive a 50 pF capacitive load at 1 MHz?

Yes - the datasheet specifies dynamic performance at CL = 50 pF, RL = 200 kΩ, and f = 1 MHz (50% duty cycle). Propagation delay remains within 100 ns max at 10 V, and output transition times (tTLH/tTHL) are ≤120 ns, ensuring reliable switching without waveform degradation or excessive rise/fall skew.

Does the HCF4001BEY require external pull-up or pull-down resistors on unused inputs?

No - unused inputs must be tied to VDD or VSS to prevent floating states that increase ICC and cause erratic output behavior. The device has no internal pull-ups; however, its high input impedance (leakage ≤100 nA) means externally tied inputs draw negligible current and do not affect adjacent gate timing or noise margin.

Is the HCF4001BEY pin-compatible with the CD4001BE in DIP-14 packages?

Yes - both share identical pin numbering, logic function, and electrical interface. The HCF4001BEY improves upon the CD4001BE with tighter propagation delay (50 ns vs. 90 ns typ. at 10 V), lower input leakage, and 100% quiescent current testing at 20 V - enabling direct substitution where enhanced timing or high-voltage stability is needed.