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Nexperia USA Inc. 74HCT4002D,112
- Part No.:
- 74HCT4002D,112
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74HCT4002D,112.pdf
- Description:
- IC GATE NOR 2CH 4-INP 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,514
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Product details
Overview
74HCT4002D,112 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 = 5.0 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 combinatorial logic in industrial control sequencers and microcontroller peripheral interface circuits.
For engineers reviewing the 74HCT4002D,112 datasheet, 74HCT4002D,112 pinout, 74HCT4002D,112 application, or 74HCT4002D,112 equivalent, key selection criteria include TTL-level input compatibility, dual-gate integration for space-constrained PCBs, guaranteed operation up to +125 °C, and SO14 package thermal performance under sustained 4 mA output drive.
Technical Context
This device implements two independent 4-input NOR gates in a single monolithic CMOS structure. Each gate performs Boolean OR-then-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 within JEDEC JESD7A compliance and supports mixed-voltage system interfacing due to TTL-level input thresholds while maintaining CMOS-level output swing (VOH ≥ 3.84 V at IO = −4.0 mA, VOL ≤ 0.33 V at IO = 5.2 mA). ESD protection exceeds 2000 V HBM and 200 V MM per JESD22-A114F/A115-A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Dual 4-input NOR gate: two independent gates, each requiring all four inputs LOW to assert HIGH output |
| Input Threshold | TTL-compatible: VIH ≥ 2.0 V, VIL ≤ 0.8 V at VCC = 4.5–5.5 V - ensures reliable interfacing with legacy 5 V TTL outputs |
| Propagation Delay | 13 ns (typ), 33 ns (max at +125 °C) at VCC = 4.5 V / CL = 50 pF - defines maximum clock/data rate in synchronous logic chains |
| Output Drive | ±4.0 mA (IOH/ IOL) at VCC = 4.5 V - sufficient to directly drive multiple 74-series inputs or small LEDs without buffering |
| Operating Range | −40 °C to +125 °C - qualified for under-hood automotive modules, industrial PLC I/O, and high-temperature power supply controllers |
| Supply Voltage | 4.5 V to 5.5 V - matches standard 5 V rail with ±10 % tolerance; excludes 3.3 V operation |
| Power Dissipation | 500 mW (max, SO14) - derates linearly above +70 °C (8 mW/K); enables thermal design in sealed enclosures |
Pinout & Package
74HCT4002D,112 uses the SO14 plastic small outline package (SOT108-1), 14-lead, 3.9 mm body width, with gull-wing leads and standard 1.27 mm pitch. Pin 1 is marked by a beveled corner or dot; pin numbering proceeds counterclockwise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5 | 1A, 1B, 1C, 1D, 1Y | First NOR gate: four inputs (1A–1D) and one output (1Y); output asserts HIGH only if all inputs are LOW |
| 6, 8 | n.c. | No-connect pins - must remain unconnected; no internal bonding or function |
| 7 | GND | Ground reference (0 V) for all logic and power domains; requires low-impedance PCB plane connection |
| 9, 10, 11, 12, 13 | 2A, 2B, 2C, 2D, 2Y | Second NOR gate: four inputs (2A–2D) and one output (2Y); electrically isolated from Gate 1 |
| 14 | VCC | Positive supply (4.5–5.5 V); decoupling capacitor (100 nF ceramic) required within 5 mm of this pin |
Key Features
| Feature | Design Value |
|---|---|
| TTL-level input compatibility | Enables direct connection to legacy 5 V TTL outputs without level-shifting circuitry |
| Input clamp diodes | Allow safe interface to signals > VCC using series current-limiting resistors - eliminates need for external clamps |
| High-temperature operation | Guaranteed functionality from −40 °C to +125 °C supports deployment in engine control units and industrial motor drives |
| Low static current | ICC ≤ 40 µA max at +125 °C ensures minimal quiescent power in battery-backed or always-on systems |
| JEDEC JESD7A compliance | Ensures interoperability with industry-standard logic families and predictable timing behavior across vendors |
Applications
| Industrial PLC Input Decoding | Microcontroller Peripheral Enable Logic |
|---|---|
Use Scenario: Decoding 4-bit address lines to select discrete I/O modules in a modular programmable logic controller chassis. IC Role / Device Role / Timing Role: Dual NOR gate implements active-LOW chip-select decoding logic; each gate evaluates one module's 4-bit address subset. Use Value: Reduces board area vs. discrete gates; eliminates timing skew between parallel decode paths due to matched propagation delays. |
Use Scenario: Enabling UART, SPI, or ADC peripherals on an MCU-based sensor node where multiple peripherals share bus lines. IC Role / Device Role / Timing Role: Generates synchronized active-LOW enable signals from MCU GPIOs; ensures peripherals activate only when all control bits align. Use Value: Prevents bus contention during peripheral initialization; supports deterministic startup sequencing without software delay loops. |
| Automotive Body Control Module | Legacy System Signal Conditioning |
Use Scenario: Interlocking door lock/unlock commands with ignition status and gear position in a vehicle body control unit. IC Role / Device Role / Timing Role: Implements safety-critical combinational logic that blocks actuation unless all three conditions (ignition OFF, gear in PARK, valid command) are met. Use Value: Provides hardware-enforced fail-safe behavior independent of firmware execution; meets ASIL-B functional safety decomposition requirements. |
Use Scenario: Adapting 5 V TTL-level control signals from aging test equipment to modern 5 V CMOS logic subsystems. IC Role / Device Role / Timing Role: Acts as a level-consistent interface buffer with identical input/output voltage thresholds and noise margins. Use Value: Eliminates signal integrity issues (e.g., metastability, slow edges) caused by mismatched logic families in brownfield upgrades. |
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 | Same logic function and pinout; TI version with identical VCC range (4.5–5.5 V), but higher ICC (max 100 µA at +125 °C) and slower tpd (15 ns typ) | Valid for drop-in replacement where layout allows; not recommended for ultra-low-power or high-speed timing-critical paths | Select if TI sourcing preference exists and 2 ns speed penalty is acceptable |
| 74VHC4002M | CMOS-input variant (VIH = 3.15 V min); wider VCC range (2–5.5 V); lower ICC (≤ 2 µA typ) but no input clamp diodes | Requires external clamping for overvoltage inputs; suitable for mixed-rail systems but incompatible with pure TTL sources | Choose only when interfacing to CMOS outputs or when 2 V minimum supply is needed |
Compared with SN74HCT4002DR, 74HCT4002D,112 offers tighter propagation delay control and lower leakage, making it preferable for timing-critical industrial sequencers; versus 74VHC4002M, its built-in clamp diodes and TTL thresholds simplify integration into legacy 5 V systems without redesigning input protection networks.
Availability
74HCT4002D,112 is available at Aetrix Electronics and suitable for industrial automation controllers, automotive body electronics, and embedded microcontroller interface circuits requiring stable component supply across extended temperature ranges.
Supply support for 74HCT4002D,112 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 global semiconductor expert delivering high-performance logic, analog, and MOSFET solutions optimized for efficiency, reliability, and manufacturability in high-volume applications.
74HCT4002D,112 belongs to Nexperia's 74HCT logic family, engineered for seamless interoperability with legacy TTL systems while leveraging CMOS power efficiency and robustness in harsh environments.
FAQ
Can 74HCT4002D,112 operate at 3.3 V supply?
No. The 74HCT4002D,112 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 validated exclusively within this range. At 3.3 V, VIH exceeds 60 % of VCC, violating input logic level definitions and risking unreliable switching or excessive ICC.
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 have no internal bonding or electrical function and must remain unconnected on the PCB to prevent unintended coupling or mechanical stress on the die bond wires.
What is the maximum capacitive load for stable 74HCT4002D,112 operation?
The device is characterized up to 50 pF load capacitance (CL) per output, with propagation delay and transition time data provided at this value. Driving > 50 pF may increase tpd beyond 33 ns (max) and cause ringing or undershoot; for heavier loads, add a series resistor (22–47 Ω) near the driver output to dampen reflections.
Does 74HCT4002D,112 support hot-swap insertion?
No. The device lacks hot-swap protection circuitry. Applying VCC before GND, or connecting inputs before supply stabilization, risks latch-up or ESD damage due to internal parasitic structures. Always ensure proper power sequencing: GND first, then VCC, then inputs - verified by board-level power management ICs or RC delays.
74HCT4002D,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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,112 FAQ
1.How can I place an order for 74HCT4002D,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT4002D,112 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,112 reliable?
The price and inventory of 74HCT4002D,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT4002D,112 is usually 5 days.
3.What payment methods are accepted for 74HCT4002D,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT4002D,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT4002D,112?
74HCT4002D,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT4002D,112 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,112?
For technical support, including 74HCT4002D,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT4002D,112 requirements.
6.How does Aetrix verify that 74HCT4002D,112 is sourced from the original manufacturer or authorized distributors?
All 74HCT4002D,112 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,112 meets industry standards.
7.What is the process for return or replacement of 74HCT4002D,112?
All 74HCT4002D,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT4002D,112, 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,112 part is unused and in its original packaging.
Return procedure for 74HCT4002D,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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