STMicroelectronics HCF40106BEY

Overview

HCF40106BEY from STMicroelectronics is a hex Schmitt trigger inverter IC in 14-pin DIP package, operating from 3V to 20V supply, with typ. hysteresis voltage of 0.9V at 5V, 2.3V at 10V, and 3.5V at 15V, and input leakage ≤100nA at 18V - used for noise-immune signal conditioning in power-on reset circuits and waveform shaping.

For engineers reviewing the HCF40106BEY datasheet, HCF40106BEY pinout, HCF40106BEY application, or HCF40106BEY equivalent, key selection criteria include verified hysteresis thresholds (VP/VN), symmetrical output drive (±1.36mA/0.44mA at 5V), propagation delay (140–280ns at 5V), noise margin ≥1V at 5V, and JEDEC JESD13B compliance for B-series CMOS devices.

Technical Context

The HCF40106BEY implements six independent CMOS Schmitt-trigger inverters with asymmetric switching thresholds: VP = 2.2–3.6V and VN = 0.9–2.8V at VDD = 5V, yielding VH = 0.3–1.6V. Each channel provides rail-to-rail output swing and supports unlimited input slew rate without oscillation.

It features standardized symmetrical output characteristics (VOH ≥4.95V, VOL ≤0.05V at VDD = 5V), quiescent current tested up to 20V (max 600µA), and operates across -55°C to +125°C - meeting JEDEC JESD13B for B-series CMOS logic devices.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schmitt trigger inverter applications.

Compared with CD40106BE and SN74LVC14APWR, HCF40106BEY uniquely supports 20V operation, guarantees hysteresis across full temperature range, and delivers proven noise immunity (>50%) - making it optimal for industrial analog-digital interface layers.

Availability

HCF40106BEY is available at Aetrix Electronics and suitable for power-on reset generators, pushbutton debounce circuits, astable multivibrators, and waveform shapers requiring stable component supply across extended temperature and voltage ranges.

Supply support for HCF40106BEY 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, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.

The HCF40106BEY belongs to ST's high-voltage B-series CMOS logic family, engineered for robust signal conditioning in harsh environments where supply variation, noise, and temperature extremes demand guaranteed hysteresis and rail-to-rail performance.

FAQ

What is the maximum supply voltage rating for HCF40106BEY?

The absolute maximum VDD is +22V, but the recommended operating range is 3V to 20V per JEDEC JESD13B. At 20V, quiescent current is specified up to 600µA (max) across -55°C to +125°C, and output drive remains functional with VOH ≥19.95V and VOL ≤0.05V - enabling use in 12V/24V industrial rails with margin.

Does HCF40106BEY require external pull-up or pull-down resistors on inputs?

No. The inputs are CMOS high-impedance with leakage ≤100nA at 18V, and Schmitt action is fully self-contained. External resistors are unnecessary unless implementing specific RC timing networks (e.g., in oscillators or monostables); floating inputs must still be avoided to prevent undefined states.

Can HCF40106BEY drive a 50pF load with specified timing?

Yes. Dynamic specifications (tPLH/tPHL, tTLH/tTHL) are explicitly characterized at CL = 50pF and RL = 200kΩ per datasheet page 4. Measured delays of 140–280ns at 5V and 60–120ns at 15V remain valid under those conditions - confirming suitability for driving typical PCB traces and small logic loads.

How does hysteresis voltage change with temperature and supply?

Hysteresis voltage (VH) varies with VDD as specified: 0.9V (typ) at 5V, 2.3V at 10V, 3.5V at 15V. Its temperature coefficient is ±0.3%/°C across -55°C to +125°C - meaning VH shifts <±5% over full range at fixed VDD, ensuring consistent noise rejection in thermal cycling environments.