Nexperia USA Inc. 74HC4002D,652

Overview

74HC4002D,652 from Nexperia is a dual 4-input CMOS NOR gate in SO14 package, operating from 2.0 V to 6.0 V supply, with propagation delay as low as 9 ns at VCC = 5.0 V and CL = 15 pF, high noise immunity, and guaranteed operation from −40 °C to +125 °C - used for combinational logic synthesis in industrial control sequencers and power management state machines.

For engineers reviewing the 74HC4002D,652 datasheet, 74HC4002D,652 pinout, 74HC4002D,652 application, or 74HC4002D,652 equivalent, key selection criteria include input voltage thresholds (VIH = 3.15 V min at VCC = 4.5 V), output drive capability (IO = ±4.0 mA), thermal derating (10.1 mW/K above 100 °C), and dual-gate functional independence for compact logic partitioning.

Technical Context

The 74HC4002D implements two independent 4-input NOR gates using standard CMOS silicon technology, with inputs featuring integrated clamp diodes enabling safe interfacing to voltages exceeding VCC when used with current-limiting resistors. Each gate exhibits symmetrical HIGH/LOW output voltage specs and defined transition times under 50 pF load.

Its logic behavior follows strict Boolean NOR truth table: output is HIGH only when all four inputs are LOW; any HIGH input forces output LOW. Static characteristics are specified across three temperature ranges, and dynamic performance includes tpd (propagation delay) and tt (transition time) measured per JEDEC test conditions with CL = 50 pF and VM = 0.5×VCC.

Key Specifications

Pinout & Package

74HC4002D,652 is housed in SOT108-1 (SO14), a plastic small outline package with 14 leads and 3.9 mm body width, optimized for automated surface-mount assembly and thermal reliability in reflow profiles.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HC4002D,652, the TSSOP variant offers smaller footprint but reduced thermal headroom, while the PDIP version sacrifices industrial temperature range and input overvoltage protection - making the SO14 version optimal for production-grade embedded systems requiring reliability and manufacturability.

Availability

74HC4002D,652 is available at Aetrix Electronics and suitable for industrial motor control, power supply sequencing, and safety interlock circuits requiring stable component supply across long product lifecycles and multi-tier manufacturing programs.

Supply support for 74HC4002D,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

Nexperia is a leading semiconductor manufacturer specializing in high-performance logic, analog, and discrete components, with global R&D and manufacturing infrastructure focused on automotive, industrial, and consumer applications.

The 74HC4002 belongs to Nexperia's 74HC high-speed CMOS logic family, designed for low-power, noise-immune digital interfacing and glue logic in harsh-environment systems where reliability and consistent timing are critical.

FAQ

What is the maximum clock frequency supported by the 74HC4002D,652?

The 74HC4002D,652 is a combinational logic device with no internal clock; its usable switching frequency depends on propagation delay and system loading. With typical tpd = 9 ns at VCC = 5.0 V and CL = 15 pF, it supports reliable operation up to ~35 MHz in feedback-free logic paths, assuming clean signal edges and proper termination.

Can the 74HC4002D,652 interface directly with 3.3 V microcontrollers?

Yes - at VCC = 3.3 V, VIH is guaranteed ≥2.1 V and VIL ≤1.35 V, providing >0.95 V noise margin. Its CMOS inputs draw negligible current (<1 μA), eliminating level-shifter requirements when driven by 3.3 V GPIOs, provided VCC is set to 3.3 V.

Are pins 6 and 8 truly unused, or can they be grounded?

Pins 6 and 8 are designated "n.c." (no connect) in the official pin description and functional diagram. They are not bonded internally and must remain unconnected - grounding them may cause unpredictable leakage paths or violate package mechanical integrity during reflow.

Does the 74HC4002D,652 support mixed-voltage operation (e.g., 5 V VCC with 3.3 V inputs)?

No - all inputs must remain within GND to VCC. However, the integrated input clamp diodes allow safe interfacing to voltages > VCC when used with external current-limiting resistors (e.g., 5 V inputs into 3.3 V-powered device), per datasheet Section 1 General Description.