Nexperia USA Inc. 74HC4002PW,112

Overview

74HC4002PW,112 from Nexperia is a dual 4-input CMOS NOR gate in TSSOP14 package, operating from 2.0 V to 6.0 V supply, with propagation delay as low as 9 ns at VCC = 6.0 V and CL = 50 pF, rated for -40 °C to +125 °C, used in digital logic control, address decoding, and bus arbitration circuits.

For engineers reviewing the 74HC4002PW,112 datasheet, 74HC4002PW,112 pinout, 74HC4002PW,112 application, or 74HC4002PW,112 equivalent, this device serves as a high-noise-immunity, low-power logic building block requiring precise input threshold matching, rail-to-rail output swing, and thermal stability across industrial temperature ranges.

Technical Context

The 74HC4002PW implements two independent 4-input NOR functions using standard CMOS silicon technology, with inputs featuring integrated clamp diodes enabling safe interfacing to voltages exceeding VCC when current-limiting resistors are used. Each gate exhibits symmetrical HIGH/LOW output voltage thresholds defined per JEDEC JESD7A.

Its logic behavior follows strict Boolean NOR truth tables: output is HIGH only when all four inputs are LOW; any HIGH input forces output LOW. Propagation delays (tPHL/tPLH) and transition times (tTHL/tTLH) are characterized across VCC = 2.0–6.0 V and temperature extremes, with dynamic power modeled via CPD = 16 pF.

Key Specifications

Pinout & Package

TSSOP14 plastic thin shrink small outline package (SOT402-1); 14-lead, body width 4.4 mm, 0.65 mm pitch, exposed pad not present.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual 4-input NOR gate applications.

Compared with 74HC4002PW,112, the SO14 variant offers superior thermal performance in static-air environments but occupies 35% more board area, while the TI alternative introduces subtle input threshold variation that may affect marginal noise-margin designs in mixed-signal test equipment.

Availability

74HC4002PW,112 is available at Aetrix Electronics and suitable for industrial automation controllers, automotive body electronics, and test instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HC4002PW,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 headquartered in Nijmegen, Netherlands, specializing in high-volume logic, analog, and discrete components with emphasis on reliability, efficiency, and manufacturability.

The 74HC4002 belongs to Nexperia's 74HC high-speed CMOS logic family, designed for robust, low-power digital interfacing in industrial, automotive, and consumer applications where signal integrity and thermal resilience are critical.

FAQ

What is the maximum clock frequency supported by the 74HC4002PW,112?

The 74HC4002PW,112 is a combinational logic device without an internal clock; its usable toggle rate depends on propagation delay and load capacitance. With CL = 50 pF and VCC = 6.0 V, typical tpd = 9 ns, supporting reliable operation up to ~50 MHz in feedback-free configurations. For oscillatory use, external RC timing must account for worst-case 26 ns delay at 125 °C.

Can the NC pins (6 and 8) be tied to GND or VCC?

Pins 6 and 8 are confirmed no-connect (n.c.) per Nexperia's official pin description table and functional diagrams. They must remain unconnected - tying them to GND or VCC violates the internal die layout and may cause unpredictable leakage or latch-up. PCB footprints should omit solder mask openings or traces at these positions.

Does the 74HC4002PW,112 support mixed-voltage interfacing between 3.3 V and 5 V systems?

Yes - its wide 2.0 V to 6.0 V supply range and CMOS input thresholds (VIH ≥ 0.7×VCC, VIL ≤ 0.3×VCC) allow direct connection to 3.3 V outputs when powered at 5 V, provided input clamp diodes are protected with ≥1 kΩ series resistors to limit current to <20 mA during overvoltage events.

How does the TSSOP14 package affect thermal management compared to SO14?

The TSSOP14 (SOT402-1) has higher thermal resistance: Ptot derates at 7.3 mW/K above +81 °C versus 10.1 mW/K above +100 °C for SO14. At full 500 mW dissipation, TSSOP reaches thermal limit ~20 °C earlier. Use localized copper pour and avoid placing near heat sources; SO14 remains preferable for >100 mW average power in still-air environments.