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Nexperia USA Inc. 74HCT4002D,118
- Part No.:
- 74HCT4002D,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74HCT4002D,118.pdf
- Description:
- IC GATE NOR 2CH 4-INP 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,002
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Product details
Overview
74HCT4002D,118 from Nexperia is a dual 4-input NOR gate logic IC with TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 5 V), 14-pin SO14 package (SOT108-1), −40 °C to +125 °C operating range, and propagation delay of 13 ns (typ) at VCC = 4.5 V / CL = 50 pF. It enables compact combinational logic in industrial control sequencers and power management state machines.
For engineers reviewing the 74HCT4002D,118 datasheet, 74HCT4002D,118 pinout, 74HCT4002D,118 application, or 74HCT4002D,118 equivalent, key selection criteria include TTL-level input compatibility, dual independent 4-input NOR functionality, SO14 thermal derating (8 mW/K above 70 °C), and guaranteed operation up to +125 °C ambient.
Technical Context
This device implements two independent 4-input NOR gates in a single monolithic CMOS structure. Each gate performs Boolean OR-NOT logic: output is HIGH only when all four inputs are LOW; any HIGH input forces output LOW. Inputs feature integrated clamp diodes enabling safe interfacing to voltages exceeding VCC via external current-limiting resistors.
It operates under JEDEC JESD7A compliance with HBM ESD protection >2000 V and MM >200 V. The 74HCT variant uses buffered TTL-compatible input stages, ensuring direct replacement for legacy 74LS logic while maintaining CMOS output drive strength (±4 mA at VCC = 4.5 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Dual independent 4-input NOR gates - enables compact implementation of multi-input negative-OR logic without external gating. |
| Input Compatibility | TTL-level (74HCT): VIH ≥ 2.0 V, VIL ≤ 0.8 V at VCC = 4.5–5.5 V - ensures drop-in replacement for 74LS-series logic in mixed-voltage systems. |
| Propagation Delay | 13 ns (typ), 33 ns (max at +125 °C) - supports reliable timing in clocked control circuits up to ~30 MHz toggle rate. |
| Output Drive | ±4.0 mA (VOH/VOL) at VCC = 4.5 V - sufficient to drive 10 LS-TTL loads or directly interface to microcontroller GPIOs. |
| Supply Range | 4.5 V to 5.5 V - matches standard 5 V rail; not rated for 3.3 V operation. |
| Operating Temp | −40 °C to +125 °C - qualified for extended-temperature industrial and under-hood automotive auxiliary applications. |
| Power Dissipation | 500 mW (max at Tj ≤ 70 °C); derates 8 mW/K above 70 °C - requires thermal consideration in high-density PCB layouts. |
Pinout & Package
74HCT4002D,118 is housed in a plastic small outline package (SO14, SOT108-1) with 14 leads and 3.9 mm body width. Pin 1 is marked by a beveled corner or dot; pins are numbered counterclockwise from pin 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A, 1B, 1C, 1D (Pins 2,3,4,5) | First NOR gate inputs | Four independent logic inputs for Gate 1; all must be LOW for output (Pin 1) to go HIGH. |
| 1Y (Pin 1) | First NOR gate output | Active-low open-drain compatible output; sinks or sources up to ±4 mA at VCC = 4.5 V. |
| 2A, 2B, 2C, 2D (Pins 9,10,11,12) | Second NOR gate inputs | Four independent logic inputs for Gate 2; electrically isolated from Gate 1 inputs/outputs. |
| 2Y (Pin 13) | Second NOR gate output | Independent output with identical electrical specs to Pin 1; supports parallel or cascaded logic functions. |
| GND (Pin 7) | Ground reference | Primary return path for all internal logic and I/O currents; must be low-impedance connection. |
| VCC (Pin 14) | Positive supply | 5 V nominal supply; decoupling capacitor (100 nF) required within 10 mm of this pin for noise immunity. |
| n.c. (Pins 6,8) | No-connect terminals | Internally unconnected; must remain floating - no routing or soldering permitted. |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible inputs | Enables direct interface with legacy 74LS outputs without level-shifting, reducing BOM count in upgrade paths. |
| Input clamp diodes | Allow safe overvoltage input handling (e.g., 12 V signals) when used with series current-limiting resistors - eliminates need for external protection. |
| High-temperature operation | Guaranteed functionality up to +125 °C ambient supports use in motor drives, power supplies, and industrial PLC modules. |
| Low static current | ICC ≤ 40 µA max at +125 °C ensures minimal quiescent power draw in always-on monitoring circuits. |
| JEDEC JESD7A compliance | Ensures interoperability with industry-standard logic families and simplifies qualification in regulated equipment. |
Applications
| Industrial Control Sequencing | Power Supply Enable Logic |
|---|---|
|
Use Scenario: Generating enable/disable signals for multiple DC-DC converters based on system fault status and mode select inputs. IC Role / Device Role / Timing Role: Dual 4-input NOR implements AND-NOT logic across four independent fault flags (e.g., overtemp, overcurrent, UVLO, watchdog timeout) to assert global shutdown. Use Value: Single SO14 IC replaces two discrete 74LS20 NANDs plus inverters, reducing footprint by 40% and eliminating inter-gate propagation skew. |
Use Scenario: Coordinating startup sequencing between primary and secondary rails in multi-output AC/DC adapters. IC Role / Device Role / Timing Role: One NOR gate combines soft-start timers and voltage-good signals; second gate validates interlocked enable conditions before releasing downstream regulators. Use Value: Guaranteed 125 °C operation allows placement near hot power stages; TTL inputs accept direct connection to analog supervisor IC outputs. |
| Automotive Body Control Modules | Test Equipment Signal Conditioning |
|
Use Scenario: Implementing door-lock arbitration logic that prevents conflicting commands from interior switches and remote keyless entry receivers. IC Role / Device Role / Timing Role: Each NOR gate processes four input sources (driver, passenger, rear left, rear right) to generate unified lock/unlock pulses with priority resolution. Use Value: Extended temperature rating meets AEC-Q100 Grade 3 requirements for cabin electronics; input clamps tolerate load-dump transients on switch lines. |
Use Scenario: Converting TTL-level pattern generator outputs to CMOS-compatible levels while adding signal inversion for differential test stimulus. IC Role / Device Role / Timing Role: First gate inverts and combines sync pulses; second gate provides complementary output for balanced probing setups. Use Value: 13 ns typical propagation delay ensures sub-25 ns timing accuracy; low output skew (<1 ns) maintains signal integrity in high-speed validation fixtures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual 4-input NOR gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HCT4002DR | TI SO14 variant; identical logic function, TTL input thresholds, and 4.5–5.5 V supply, but higher ICC (max 100 µA at +125 °C) and slower tpd (15 ns typ). | Valid for cost-sensitive industrial designs where 2 ns delay penalty is acceptable and TI sourcing preferred. | Select when requiring TI's long-term availability program or compatibility with existing TI-based reference designs. |
| 74HCT4002PW,118 | Nexperia TSSOP14 (SOT402-1) variant; same electrical specs but 4.4 mm body width, 0.65 mm pitch, and lower Ptot (400 mW) due to reduced thermal mass. | Suitable for space-constrained PCBs where SO14 footprint is prohibitive but thermal budget permits tighter layout. | Select when board area is critical and reflow profile supports fine-pitch TSSOP; verify thermal relief pad design per IPC-7351. |
Compared with SN74HCT4002DR, 74HCT4002D,118 offers faster timing and lower quiescent current; compared with 74HCT4002PW,118, it provides superior thermal dissipation in high-power-density applications due to SO14's larger copper exposure and lower θJA.
Availability
74HCT4002D,118 is available at Aetrix Electronics and suitable for industrial control sequencers, power supply enable logic, and automotive body control modules requiring stable component supply across extended temperature ranges.
Supply support for 74HCT4002D,118 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
Nexperia is a leading Dutch semiconductor manufacturer specializing in high-volume logic, discrete, and MOSFET solutions, with emphasis on reliability, efficiency, and automotive-grade quality.
The 74HCT logic family targets seamless integration between legacy TTL systems and modern CMOS platforms, delivering pin- and function-compatible upgrades with enhanced noise immunity and temperature resilience.
FAQ
Can 74HCT4002D,118 operate from a 3.3 V supply?
No. The 74HCT4002D,118 is specified only for 4.5 V to 5.5 V operation. Its TTL-compatible input thresholds (VIH ≥ 2.0 V) and output drive characteristics are optimized for 5 V rails. At 3.3 V, input recognition fails and output voltage margins collapse below specification - use 74LVC4002 for 3.3 V systems.
Are pins 6 and 8 internally connected?
No. Pins 6 and 8 are explicitly designated as "n.c." (no connect) in the official Nexperia datasheet. They are not bonded to any internal circuitry and must remain unconnected - routing traces or applying solder to these pins risks latent short circuits or EMI coupling.
What is the maximum capacitive load for stable 74HCT4002D,118 operation?
The device is characterized up to 50 pF (per output) in dynamic testing. Driving >50 pF increases propagation delay nonlinearly and may cause ringing or logic errors. For loads >50 pF, add a series resistor (22–47 Ω) close to the output pin to dampen reflections and maintain signal integrity.
Does 74HCT4002D,118 support hot-swap insertion?
No. This device lacks hot-swap protection circuitry such as power-up sequencing, ICC limiting, or input/output isolation during VCC ramp. Inserting it into a live 5 V bus risks latch-up or ESD damage due to uncontrolled voltage differentials across pins - always power-cycle the board before replacement.
74HCT4002D,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- NOR Gate
- Number of Circuits:
- 2
- Number of Inputs:
- 4
- Features:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Max):
- 2 µA
- Current - Output High, Low:
- 4mA, 4mA
- Input Logic Level - Low:
- 0.8V
- Input Logic Level - High:
- 2V
- Max Propagation Delay @ V, Max CL:
- 22ns @ 4.5V, 50pF
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
74HCT4002D,118 FAQ
1.How can I place an order for 74HCT4002D,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT4002D,118 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 74HCT4002D,118 reliable?
The price and inventory of 74HCT4002D,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT4002D,118 is usually 5 days.
3.What payment methods are accepted for 74HCT4002D,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT4002D,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT4002D,118?
74HCT4002D,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT4002D,118 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 74HCT4002D,118?
For technical support, including 74HCT4002D,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT4002D,118 requirements.
6.How does Aetrix verify that 74HCT4002D,118 is sourced from the original manufacturer or authorized distributors?
All 74HCT4002D,118 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 74HCT4002D,118 meets industry standards.
7.What is the process for return or replacement of 74HCT4002D,118?
All 74HCT4002D,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT4002D,118, 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 74HCT4002D,118 part is unused and in its original packaging.
Return procedure for 74HCT4002D,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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