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Nexperia USA Inc. 74HCT4002DB,112
- Part No.:
- 74HCT4002DB,112
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Gates and Inverters
- Package:
- 14-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
74HCT4002DB,112.pdf
- Description:
- IC GATE NOR 2CH 4-INP 14SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,094
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Product details
Overview
74HCT4002DB,112 from Nexperia is a dual 4-input NOR gate logic IC operating at TTL-compatible input levels (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 5.0 V), with 14-pin SSOP package (SOT337-1), −40 °C to +125 °C temperature range, and propagation delay of 13 ns (typ) at VCC = 4.5 V, CL = 50 pF - used in industrial control signal conditioning and digital state decoding.
For engineers reviewing the 74HCT4002DB,112 datasheet, 74HCT4002DB,112 pinout, 74HCT4002DB,112 application, or 74HCT4002DB,112 equivalent, key selection factors include TTL-level input compatibility, dual-gate integration for compact logic reduction, SSOP14 thermal performance at extended temperature, and guaranteed 4.0 mA output drive capability at VOH ≥ 3.84 V.
Technical Context
This device implements two independent 4-input NOR gates in a single monolithic CMOS structure with TTL-compatible input thresholds, enabling direct interfacing with legacy 5 V TTL systems without level-shifting. Each gate features input clamp diodes supporting current-limiting resistor use for overvoltage-tolerant inputs.
It operates across −40 °C to +125 °C with static VIH/VIL defined per JEDEC JESD8-A, and dynamic timing characterized using standard load conditions (CL = 50 pF, VM = 1.3 V). Propagation delay and transition time are specified separately for 4.5 V and 5.0 V supply rails under full temperature range compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Dual 4-input NOR gate - enables compact implementation of two independent OR-NOT operations per package. |
| Input Compatibility | TTL-level (74HCT variant): VIH ≥ 2.0 V, VIL ≤ 0.8 V at VCC = 4.5–5.5 V - ensures interoperability with standard 5 V TTL outputs. |
| Propagation Delay | 13 ns (typ) at VCC = 4.5 V, CL = 50 pF - supports reliable operation up to ~30 MHz toggle rate in synchronous logic paths. |
| Output Drive | ±4.0 mA at VOH/VOL specifications - sufficient to drive multiple 74-series inputs or small capacitive loads without buffering. |
| Supply Range | 4.5 V to 5.5 V - aligns with standard 5 V system rails and avoids undervoltage lockout in industrial power domains. |
| Operating Temperature | −40 °C to +125 °C - qualified for under-hood, motor control, and high-reliability industrial environments. |
| ESD Protection | HBM > 2000 V, MM > 200 V - provides robust handling margin during PCB assembly and field service. |
Pinout & Package
74HCT4002DB,112 uses the SOT337-1 plastic shrink small outline package (SSOP14), 14 leads, body width 5.3 mm, with exposed pad not present and standard gull-wing lead form for surface-mount reflow assembly.
| 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 HIGH output (NOR truth table). |
| 1Y (Pin 1) | First NOR gate output | Active-low open-drain compatible output; sinks or sources up to ±4.0 mA per spec. |
| 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 except shared VCC/GND. |
| 2Y (Pin 13) | Second NOR gate output | Independent output with identical DC/AC specs as 1Y; supports parallel or cascaded logic functions. |
| VCC (Pin 14) | Positive supply | Primary 4.5–5.5 V rail connection; decoupling capacitor placement critical near this pin. |
| GND (Pin 7) | Ground reference | 0 V return path for all internal logic and I/O; must be low-impedance for noise immunity. |
| n.c. (Pins 6,8) | No-connect terminals | Internally unconnected; must remain floating - no routing or soldering required. |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible input thresholds | Ensures plug-in replacement for legacy 74LS logic without redesigning input interface networks. |
| Input clamp diodes | Enables safe interface to signals exceeding VCC via external current-limiting resistors (e.g., 5 V logic driving 3.3 V domain). |
| −40 °C to +125 °C operation | Validated performance across full automotive-grade extended temperature range without derating. |
| Low ICC quiescent current | Max 40 µA at VCC = 5.5 V and T = 125 °C - minimizes standby power in battery-backed or energy-sensitive systems. |
| JEDEC JESD7A compliance | Guarantees interoperability with industry-standard logic families and test methodologies. |
Applications
| Industrial PLC Input Decoding | Automotive Body Control Module Logic |
|---|---|
Use Scenario: Decoding multi-sensor status (door open, seat belt, ignition) into consolidated fault or enable signals. IC Role / Device Role / Timing Role: Dual NOR gate performs wired-OR inversion to detect any active fault condition across four sensor inputs per gate. Use Value: Reduces board space versus discrete transistor logic; eliminates need for external pull-ups due to CMOS input impedance. |
Use Scenario: Interfacing switch matrix signals (headlight, wiper, HVAC controls) to microcontroller GPIO with noise immunity. IC Role / Device Role / Timing Role: Signal conditioning and debouncing pre-processing stage before MCU sampling. Use Value: TTL-level inputs tolerate contact bounce and EMI; 125 °C rating supports under-dash mounting near heat sources. |
| Test Equipment Digital Sequencing | Medical Diagnostic Instrument Control |
Use Scenario: Generating synchronized enable pulses for ADC sampling windows and DAC update strobes. IC Role / Device Role / Timing Role: Combinational logic element in finite-state machine control path for precise timing alignment. Use Value: 13 ns propagation delay enables sub-40 MHz deterministic sequencing; SSOP14 footprint aids high-density layout. |
Use Scenario: Safety interlock validation where four independent hardware sensors must all indicate "safe" to enable therapy delivery. IC Role / Device Role / Timing Role: Fail-safe logic gate enforcing AND-of-NOT condition (NOR output HIGH only when all inputs LOW). Use Value: Guaranteed 125 °C operation supports sterilization cycles; HBM > 2000 V ESD withstand protects against handling discharge. |
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 | SOIC-14 package (SOT108-1); same electrical specs but 3.9 mm body width and higher thermal resistance (8 mW/K above 70 °C). | Better suited for through-hole prototyping or legacy SOIC footprints; less dense than SSOP for space-constrained boards. | Select when board layout uses SOIC land patterns or requires easier hand-soldering access. |
| 74LVC4002PW | 3.3 V only supply (1.65–3.6 V); LVCMOS inputs; lower propagation delay (6.3 ns typ), but incompatible with 5 V TTL systems. | Targets modern low-voltage embedded systems; cannot replace 74HCT4002DB,112 in 5 V mixed-signal designs. | Choose only for new 3.3 V designs requiring faster switching and lower power - not a drop-in substitute. |
Compared with SN74HCT4002DR and 74LVC4002PW, the 74HCT4002DB,112 uniquely balances 5 V TTL compatibility, SSOP14 space efficiency, and extended temperature resilience - making it optimal for industrial retrofit and high-density control modules where voltage and footprint constraints coexist.
Availability
74HCT4002DB,112 is available at Aetrix Electronics and suitable for industrial PLC input decoding, automotive body control logic, and medical diagnostic instrument control requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74HCT4002DB,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 discrete components with emphasis on reliability, efficiency, and manufacturability for industrial and automotive markets.
The 74HCT4002DB,112 belongs to Nexperia's 74HCT logic family, engineered specifically for seamless integration between legacy TTL systems and modern CMOS-based controllers while maintaining robustness across harsh environmental conditions.
FAQ
What is the maximum clock frequency supported by the 74HCT4002DB,112?
The 74HCT4002DB,112 is a combinational logic device without an internal clock; its usable toggle rate depends on propagation delay and system loading. With tPD = 13 ns (typ) at VCC = 4.5 V and CL = 50 pF, it reliably supports logic transitions up to approximately 30 MHz in well-designed paths - assuming minimal trace capacitance and proper decoupling.
Can the 74HCT4002DB,112 drive LEDs directly?
No - the 74HCT4002DB,112 is not designed for direct LED drive. Its output current capability is ±4.0 mA (sink/source), insufficient for typical indicator LEDs requiring 5–20 mA. Use an external NPN transistor or dedicated LED driver IC to avoid violating VOL/VOH specifications or risking output degradation.
Are Pins 6 and 8 internally connected or truly unused?
Pins 6 and 8 are confirmed no-connect (n.c.) terminals per Nexperia's official pin description table. They are not bonded internally and must remain unconnected in PCB layout - no routing, vias, or solder mask openings are required or recommended.
Does the 74HCT4002DB,112 support mixed-voltage interfacing (e.g., 3.3 V inputs)?
No - the 74HCT4002DB,112 requires VCC = 4.5–5.5 V and defines TTL-compatible input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V). A 3.3 V logic HIGH may fall below VIH minimum under worst-case conditions, causing unreliable recognition. Level translation is required for interfacing with 3.3 V systems.
74HCT4002DB,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 14-SSOP (0.209", 5.30mm 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-SSOP
74HCT4002DB,112 FAQ
1.How can I place an order for 74HCT4002DB,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT4002DB,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 74HCT4002DB,112 reliable?
The price and inventory of 74HCT4002DB,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT4002DB,112 is usually 5 days.
3.What payment methods are accepted for 74HCT4002DB,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT4002DB,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT4002DB,112?
74HCT4002DB,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT4002DB,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 74HCT4002DB,112?
For technical support, including 74HCT4002DB,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT4002DB,112 requirements.
6.How does Aetrix verify that 74HCT4002DB,112 is sourced from the original manufacturer or authorized distributors?
All 74HCT4002DB,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 74HCT4002DB,112 meets industry standards.
7.What is the process for return or replacement of 74HCT4002DB,112?
All 74HCT4002DB,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT4002DB,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 74HCT4002DB,112 part is unused and in its original packaging.
Return procedure for 74HCT4002DB,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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