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NXP Semiconductors HEF4025BP,652
- Part No.:
- HEF4025BP,652
- Manufacturer:
- NXP Semiconductors
- Category:
- Gates and Inverters
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
HEF4025BP,652.pdf
- Description:
- IC GATE NOR 3CH 3-INP 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,709
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Product details
Overview
HEF4025BP,652 from NXP Semiconductors (formerly Philips) is a triple 3-input NOR gate IC in the HE4000B LOCMOS logic family, operating at 5 V to 15 V supply, with propagation delays as low as 12 ns at 15 V and 50 pF load, fully buffered outputs for high noise immunity, and designed for reliable combinatorial logic in industrial control and instrumentation systems.
For engineers reviewing the HEF4025BP,652 datasheet, HEF4025BP,652 pinout, HEF4025BP,652 application, or HEF4025BP,652 equivalent, key selection criteria include supply voltage range (5–15 V), 3-input NOR functionality per gate, DIL-14 plastic package (SOT27-1), propagation delay vs. VDD/load dependency, and LOCMOS family compatibility with other HE4000B devices.
Technical Context
The HEF4025BP,652 implements three independent 3-input NOR gates using LOCMOS (Low-power CMOS) technology, ensuring static power consumption near zero and dynamic dissipation scaling with input/output frequency and load capacitance. Each gate exhibits symmetric HIGH-to-LOW and LOW-to-HIGH propagation delays under defined test conditions.
Its output stage is fully buffered, delivering stable drive strength and minimizing pattern-dependent impedance variation-critical for maintaining signal integrity across multiple fan-out loads in synchronous and asynchronous digital systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Triple 3-input NOR - enables compact implementation of OR-NOT logic trees without external inversion |
| Supply Voltage Range | 5 V to 15 V - supports direct interface with legacy TTL and wide-range industrial supplies |
| Propagation Delay (tPHL/tPLH) | 12 ns max at VDD = 15 V, CL = 50 pF - ensures timing predictability in 10–20 MHz clock-domain glue logic |
| Output Drive | Fully buffered - eliminates output impedance variation across switching patterns, improving noise margin |
| Input Transition Time | ≤20 ns - defines maximum allowable edge rate for guaranteed timing spec compliance |
| Dynamic Power Dissipation | 10.9 mW typical at 15 V, fi = 1 MHz, no load - scales linearly with frequency and capacitive loading |
Pinout & Package
HEF4025BP,652 is supplied in a 14-lead dual in-line plastic package (SOT27-1, DIP-14), with 0.3-inch body width and standard through-hole mounting footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | Input A, B, C of Gate 1 | Three independent logic inputs for first NOR gate; all must be LOW for HIGH output |
| 4 | Output Y1 | Active-LOW NOR output of Gate 1; drives downstream logic or pull-up networks |
| 5, 6, 7 | Input A, B, C of Gate 2 | Three independent logic inputs for second NOR gate |
| 8 | VSS | Ground reference (0 V) for all internal circuitry and I/O |
| 9, 10, 11 | Input A, B, C of Gate 3 | Three independent logic inputs for third NOR gate |
| 12 | Output Y3 | Active-LOW NOR output of Gate 3 |
| 13 | Output Y2 | Active-LOW NOR output of Gate 2 |
| 14 | VDD | Positive supply rail (5–15 V); powers all three gates and output buffers |
Key Features
| Feature | Design Value |
|---|---|
| LOCMOS Technology | Enables ultra-low static power (<1 µW) while retaining CMOS noise immunity and rail-to-rail swing |
| Triple Independent Gates | Reduces board space and interconnect count versus discrete gate implementations |
| Buffered Outputs | Ensures consistent rise/fall times and load-driving capability across all output states |
| Voltage-Tolerant Operation | Valid operation from 5 V to 15 V allows reuse across mixed-supply systems without level shifters |
Applications
| Industrial Control Logic | Test Equipment Signal Conditioning |
|---|---|
Use Scenario: Decoding status signals from multiple sensors in PLC I/O modules. IC Role / Device Role / Timing Role: HEF4025BP,652 performs wired-OR elimination and active-LOW alarm consolidation across three sensor channels. Use Value: Eliminates need for external inverters and reduces component count by integrating three independent NOR functions in one DIP-14 package. | Use Scenario: Generating synchronized enable/disable strobes for analog multiplexer selection in automated test fixtures. IC Role / Device Role / Timing Role: HEF4025BP,652 combines three control lines to produce a precise gated clock-enable signal with deterministic setup/hold margins. Use Value: Propagation delay consistency (±5 ns over VDD range) ensures sub-microsecond timing alignment across multiple test channels. |
| Legacy System Repair | Power Sequencing Supervision |
Use Scenario: Replacing obsolete TTL 74LS25 in vintage instrumentation where +12 V rails remain in service. IC Role / Device Role / Timing Role: HEF4025BP,652 substitutes for 74LS25 with identical pinout and 3-input NOR function, operating directly from 12 V without level translation. Use Value: Maintains functional equivalence while reducing power draw by >90% and eliminating TTL's DC input current burden. | Use Scenario: Monitoring undervoltage lockout (UVLO) conditions across three independent DC rails in telecom power shelves. IC Role / Device Role / Timing Role: HEF4025BP,652 acts as a three-rail AND-NOT supervisor: all three UVLO flags must be HIGH to assert system reset (NOR output LOW). Use Value: Leverages inherent active-LOW output to directly drive reset latches without external pull-downs or inverters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3-input NOR gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CD4025BE | Same 3-input NOR function, but TI CD4000-series has higher propagation delay (150 ns @ 5 V) and lower drive strength | Less suitable for 10+ MHz timing-critical paths; better for low-frequency battery-powered systems | Select CD4025BE only when VDD ≤ 5 V and speed < 1 MHz is acceptable |
| 74HC25N,652 | Pin-compatible 3-input NOR in high-speed CMOS, faster (10 ns @ 5 V) but limited to 2–6 V supply range | Requires level-shifting in 12 V or 15 V systems; not drop-in replaceable for HEF4025BP,652 | Choose 74HC25N,652 only in 5 V-only designs where speed is prioritized over supply flexibility |
Compared with CD4025BE and 74HC25N,652, the HEF4025BP,652 uniquely balances wide supply range (5–15 V), moderate speed (12 ns @ 15 V), and legacy DIP-14 compatibility-making it the only option for direct replacement in existing 12 V industrial boards requiring minimal layout change.
Availability
HEF4025BP,652 is available at Aetrix Electronics and suitable for industrial control logic, test equipment signal conditioning, and legacy system repair requiring stable component supply and long-term obsolescence management.
Supply support for HEF4025BP,652 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
NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications.
The HE4000B LOCMOS logic family-including HEF4025BP,652-was engineered for robust, low-power digital interfacing in harsh environments where wide supply tolerance and noise resilience are essential.
FAQ
What logic family does the HEF4025BP,652 belong to?
The HEF4025BP,652 belongs to the HE4000B LOCMOS (Low-power CMOS) logic family originally developed by Philips and now maintained by NXP Semiconductors. It features rail-to-rail output swing, near-zero static current, and specified timing behavior across 5 V to 15 V supply voltages-distinct from standard 4000B or 74HC series in both voltage range and buffer architecture.
Is the HEF4025BP,652 pin-compatible with the 74LS25?
Yes, the HEF4025BP,652 is pin-compatible with the 74LS25 in the 14-pin DIP package, sharing identical pin assignments for inputs, outputs, VDD, and VSS. However, unlike the bipolar 74LS25, the HEF4025BP,652 draws negligible input current and operates correctly at 12 V or 15 V without modification-making it a functional and physical drop-in replacement in most legacy designs.
What is the maximum recommended load capacitance for the HEF4025BP,652?
The HEF4025BP,652 is characterized up to 50 pF load capacitance per output in its AC specifications, with propagation delays extrapolated using formulas like tPHL = 12 ns + (0.16 ns/pF) × CL at 15 V. Driving loads beyond 50 pF increases delay nonlinearly and may degrade edge monotonicity; for >50 pF, buffer staging or reduced VDD is advised to maintain timing integrity in the HEF4025BP,652.
Does the HEF4025BP,652 require external pull-up or pull-down resistors?
No, the HEF4025BP,652 does not require external pull-up or pull-down resistors on its inputs or outputs. Its CMOS inputs have extremely high impedance (>10¹² Ω), and outputs are actively driven to VDD or VSS. Unused inputs must be tied to VDD or VSS to prevent floating states; unused outputs may be left open. This behavior is intrinsic to the HEF4025BP,652's LOCMOS design.
Can the HEF4025BP,652 operate reliably at 3.3 V?
No, the HEF4025BP,652 is not specified for 3.3 V operation. Its absolute minimum supply voltage is 5 V per the January 1995 datasheet, and electrical characteristics (including propagation delay and output drive) are not guaranteed below that threshold. For 3.3 V systems, consider 74LVC25 or 74AUP2G25 instead-HEF4025BP,652 requires ≥5 V to meet its published performance.
HEF4025BP,652 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 4000B
- 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 ~ 15V
- Current - Quiescent (Max):
- 4 µA
- Current - Output High, Low:
- 3mA, 3mA
- Input Logic Level - Low:
- 1.5V ~ 4V
- Input Logic Level - High:
- 3.5V ~ 11V
- Max Propagation Delay @ V, Max CL:
- 40ns @ 15V, 50pF
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-DIP
HEF4025BP,652 FAQ
1.How can I place an order for HEF4025BP,652 through Aetrix?
Please submit a Request for Quotation (RFQ) for HEF4025BP,652 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 HEF4025BP,652 reliable?
The price and inventory of HEF4025BP,652 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HEF4025BP,652 is usually 5 days.
3.What payment methods are accepted for HEF4025BP,652?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HEF4025BP,652 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HEF4025BP,652?
HEF4025BP,652 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HEF4025BP,652 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 HEF4025BP,652?
For technical support, including HEF4025BP,652 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HEF4025BP,652 requirements.
6.How does Aetrix verify that HEF4025BP,652 is sourced from the original manufacturer or authorized distributors?
All HEF4025BP,652 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 HEF4025BP,652 meets industry standards.
7.What is the process for return or replacement of HEF4025BP,652?
All HEF4025BP,652 units undergo pre-shipment inspection (PSI). If there is an issue with HEF4025BP,652, 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 HEF4025BP,652 part is unused and in its original packaging.
Return procedure for HEF4025BP,652:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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