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STMicroelectronics HCF4025BEY
- Part No.:
- HCF4025BEY
- Manufacturer:
- STMicroelectronics
- Category:
- Gates and Inverters
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
HCF4025BEY.pdf
- Description:
- IC GATE NOR 3CH 3-INP 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,030
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Product details
Overview
HCF4025BEY from STMicroelectronics is a triple 3-input NOR gate CMOS logic IC in 14-pin DIP package, operating from 3V to 20V supply, with typical propagation delay of 50ns at 10V/50pF, buffered inputs/outputs, symmetrical output drive (±1.1mA @10V), and guaranteed quiescent current ≤0.5µA at 10V - used in industrial control sequencers and legacy TTL-to-CMOS interface logic.
For engineers reviewing the HCF4025BEY datasheet, HCF4025BEY pinout, HCF4025BEY application, or HCF4025BEY equivalent, key selection criteria include VDD range (3–20V), input leakage (≤100nA @18V), noise margin (2V min @10V), and DIP-14 mechanical compatibility with through-hole PCB assembly.
Technical Context
The HCF4025BEY implements three independent 3-input NOR gates using standard B-series CMOS process, with fully buffered I/O stages ensuring consistent rise/fall times and high noise immunity. Each gate exhibits symmetrical VOH/VOL (4.95V/0.05V @5V) and supports rail-to-rail input voltage range (0 to VDD).
It meets JEDEC JESD13B for B-series CMOS devices, specifying absolute max ratings up to 22V supply and operation across -55°C to +125°C. Input leakage is characterized at ±100nA max @18V, and quiescent current is 100% tested per unit.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Range | 3V to 20V - enables direct replacement of 5V/10V/15V legacy logic without level-shifting. |
| tPD (Typ.) | 50ns @10V/50pF - defines maximum clock rate for synchronous state machines using this gate. |
| IOH/IOL | -1.1mA / +0.9mA @10V - sufficient to drive multiple 4000-series inputs or small LED loads directly. |
| VIH/VIL | 7V / 3V @10V - provides 2V noise margin, critical for noisy industrial environments. |
| IQ (Max) | 0.5µA @10V - ensures ultra-low standby power in battery-backed control logic. |
| CI (Input) | 7.5pF - limits capacitive loading on preceding stage, preserving signal edge integrity. |
Pinout & Package
Package: Plastic Dual In-line Package (DIP-14), 0.3" wide, lead pitch 2.54mm, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,2,3 | NOR1 Inputs A,B,C | Three independent logic inputs for first NOR gate; all buffered, rail-to-rail compatible. |
| 4,5,8 | NOR2 Inputs D,E,F | Inputs for second NOR gate; identical electrical behavior to pins 1–3. |
| 11,12,13 | NOR3 Inputs I,H,G | Inputs for third NOR gate; pin order matches truth table labeling in datasheet. |
| 6 | NOR1 Output K | Inverted OR of pins 1,2,3; drives load up to 0.9mA sink / 1.1mA source @10V. |
| 9 | NOR2 Output J | Inverted OR of pins 4,5,8; electrically isolated from other outputs. |
| 10 | NOR3 Output L | Inverted OR of pins 11,12,13; full symmetry with outputs 6 and 9. |
| 7 | VSS | Negative supply reference (GND); must be connected before VDD to prevent latch-up. |
| 14 | VDD | Positive supply input; accepts 3–20V DC; decoupling capacitor required at point-of-load. |
Key Features
| Feature | Design Value |
|---|---|
| Triple 3-input NOR function | Integrates three independent logic gates in one DIP-14 package, reducing board space vs discrete solutions. |
| Buffered I/O | Eliminates fan-out limitations and ensures consistent timing across all inputs and outputs. |
| Wide VDD range (3–20V) | Supports direct use in mixed-voltage systems without external regulators or level shifters. |
| 100% IQ tested | Guarantees ultra-low static power consumption for long-life embedded control applications. |
| JEDEC JESD13B compliant | Ensures interoperability and reliability matching industry-standard B-series CMOS logic families. |
Applications
| Industrial Sequencer Logic | Legacy System Interface |
|---|---|
Use Scenario: Discrete-state control in PLC I/O modules where deterministic gate delay and noise immunity are required. IC Role / Device Role / Timing Role: Performs combinatorial NOR logic for ladder-logic translation and safety interlock evaluation. Use Value: 50ns tPD enables sub-10MHz state transitions; 2V noise margin prevents spurious triggering in EMI-heavy factory floors. | Use Scenario: Bridging 5V TTL microcontrollers to 12V relay drivers or analog multiplexers in retro instrumentation. IC Role / Device Role / Timing Role: Level-translating logic gate enabling bidirectional signal conditioning without external bias networks. Use Value: Rail-to-rail VI (0 to VDD) and 3–20V VDD support allow direct connection between disparate voltage domains. |
| Low-Power Sensor Hub | Power Supply Monitor |
Use Scenario: Wake-up logic in battery-powered environmental sensor nodes requiring µA-level standby current. IC Role / Device Role / Timing Role: NOR-based enable gate that activates ADC subsystem only when all trigger conditions are met. Use Value: 0.5µA max IQ @10V extends battery life by >10 years in intermittent-sampling configurations. | Use Scenario: Undervoltage lockout (UVLO) circuit in linear regulator feedback paths for industrial power supplies. IC Role / Device Role / Timing Role: Combines multiple rail-monitor signals (e.g., +5V, +12V, -5V) into single fault flag via NOR logic inversion. Use Value: Symmetrical VOH/VOL (4.95V/0.05V @5V) ensures clean digital signaling to supervisor ICs with tight threshold windows. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple 3-input NOR gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CD4025BE | Same pinout and logic function; higher typical tPD (90ns @5V), lower IOH (-0.4mA @5V). | Less suitable for >1MHz clocked logic; acceptable for static control and slow monitoring. | Select when cost sensitivity outweighs speed/power requirements and CD4025BE is already qualified. |
| MC14025BDR2G | SOIC-14 only; tighter VOL spec (0.03V @5V); same VDD range and IQ performance. | Requires surface-mount assembly; better for new designs targeting higher density and thermal performance. | Prefer for new SMT-based industrial controllers where board space and reflow compatibility are priorities. |
Compared with CD4025BE and MC14025BDR2G, the HCF4025BEY offers superior speed-power trade-off in through-hole form factor, making it optimal for field-replaceable legacy upgrades and ruggedized prototyping.
Availability
HCF4025BEY is available at Aetrix Electronics and suitable for industrial sequencer logic, legacy system interface, low-power sensor hubs, and power supply monitor circuits requiring stable component supply over extended product lifecycles.
Supply support for HCF4025BEY 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 markets.
The HCF4025BEY belongs to the HCF4000B series of radiation-hardened, high-voltage CMOS logic devices, engineered specifically for robust operation in extended temperature and mixed-voltage industrial control environments.
FAQ
What is the maximum operating voltage for HCF4025BEY?
The absolute maximum supply voltage is +22V, but the recommended operating range is 3V to 20V per JEDEC JESD13B. Operation above 20V risks permanent damage and voids parametric guarantees; sustained use at 20V is validated for full temperature range (-55°C to +125°C) with derated power dissipation.
Does HCF4025BEY support mixed-voltage interfacing?
Yes - its inputs accept 0V to VDD, and outputs swing rail-to-rail, enabling direct interfacing between 5V, 10V, and 15V logic domains without external level shifters. However, all inputs referenced to the same VDD and VSS rails; multi-supply domain operation requires isolation or level-shifting circuitry.
Is HCF4025BEY pin-compatible with CD4025BE?
Yes - both use identical DIP-14 pinout and logic function. Key differences include propagation delay (HCF4025BEY: 50ns typ @10V vs CD4025BE: 90ns typ @5V) and output drive strength (HCF4025BEY delivers ±1.1mA @10V, CD4025BE only ±0.4mA @5V), affecting timing-critical and high-fanout applications.
What is the input capacitance and how does it affect layout?
Input capacitance is 7.5pF maximum per pin. This low value minimizes loading on driving stages and reduces sensitivity to PCB trace capacitance. For layouts operating near 1MHz, keep input traces short (<5cm) and avoid stubs to preserve edge integrity; no termination resistors are needed due to CMOS high-impedance inputs.
HCF4025BEY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- 4000
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- NOR Gate
- Number of Circuits:
- 3
- Number of Inputs:
- 3
- Features:
- -
- Voltage - Supply:
- 3V ~ 20V
- Current - Quiescent (Max):
- 5 µA
- Current - Output High, Low:
- 6.8mA, 6.8mA
- Input Logic Level - Low:
- 1.5V ~ 4V
- Input Logic Level - High:
- 3.5V ~ 11V
- Max Propagation Delay @ V, Max CL:
- 80ns @ 15V, 50pF
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-DIP
HCF4025BEY FAQ
1.How can I place an order for HCF4025BEY through Aetrix?
Please submit a Request for Quotation (RFQ) for HCF4025BEY on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for HCF4025BEY reliable?
The price and inventory of HCF4025BEY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HCF4025BEY is usually 5 days.
3.What payment methods are accepted for HCF4025BEY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HCF4025BEY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HCF4025BEY?
HCF4025BEY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HCF4025BEY order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for HCF4025BEY?
For technical support, including HCF4025BEY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HCF4025BEY requirements.
6.How does Aetrix verify that HCF4025BEY is sourced from the original manufacturer or authorized distributors?
All HCF4025BEY products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that HCF4025BEY meets industry standards.
7.What is the process for return or replacement of HCF4025BEY?
All HCF4025BEY units undergo pre-shipment inspection (PSI). If there is an issue with HCF4025BEY, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The HCF4025BEY part is unused and in its original packaging.
Return procedure for HCF4025BEY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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