Nexperia USA Inc. 74HC02BQ-Q100,115

Overview

74HC02BQ-Q100 from Nexperia is an automotive-qualified quad 2-input NOR gate in DHVQFN14 package, operating from 2.0 V to 6.0 V supply, with propagation delay as low as 7 ns at VCC = 6.0 V and CL = 50 pF, and specified for -40 °C to +125 °C ambient range. It features CMOS-level inputs, high noise immunity, latch-up immunity >100 mA, and side-wettable flanks for AOI-compatible solder joint inspection.

For engineers reviewing the 74HC02BQ-Q100 datasheet, 74HC02BQ-Q100 pinout, 74HC02BQ-Q100 application, or 74HC02BQ-Q100 equivalent, this device is selected for logic-level translation, signal inversion, and enable/disable control in automotive body electronics, powertrain interface modules, and ADAS sensor preprocessing circuits where AEC-Q100 Grade 1 compliance and thermal-enhanced packaging are required.

Technical Context

This device implements four independent 2-input NOR gates using silicon-gate CMOS technology, each with input clamp diodes enabling safe interfacing to voltages exceeding VCC when used with current-limiting resistors. Its logic function follows standard Boolean NOR behavior: output HIGH only when both inputs are LOW.

The DHVQFN14 package (SOT762-1) provides thermal enhancement via an exposed die pad and side-wettable flanks for automated optical inspection of solder joints - critical for automotive production traceability. Input levels conform to CMOS thresholds (VIH ≥ 3.15 V at VCC = 4.5 V), ensuring compatibility with 3.3 V and 5 V logic families.

Key Specifications

Pinout & Package

DHVQFN14 package (SOT762-1): 2.5 mm × 3.0 mm × 0.85 mm body, no leads, exposed thermal pad (non-electrical unless connected to GND), side-wettable flanks for AOI.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad NOR gate applications.

Compared with 74HC02BQ-Q100, the 74HCT02BQ-Q100 offers better 5 V TTL interoperability but sacrifices noise margin in 3.3 V systems, while the SN74LVC2G02DPWR provides faster speed and smaller size but lacks AEC-Q100 validation and thermal robustness for under-hood use.

Availability

74HC02BQ-Q100 is available at Aetrix Electronics and suitable for automotive body electronics, powertrain interface modules, and ADAS sensor preprocessing circuits requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HC02BQ-Q100 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 core expertise in automotive-grade reliability and high-volume manufacturing.

The 74HC02-Q100 product line delivers AEC-Q100-compliant, high-speed CMOS logic gates optimized for automotive subsystems requiring robust noise immunity, wide supply range, and thermal resilience in harsh environments.

FAQ

Is the exposed pad on the DHVQFN14 package electrically connected?

No - the exposed thermal pad (Pin 1 index area) is not electrically tied to any internal node. It may be left floating or connected to GND for improved thermal performance, but no electrical requirement exists for soldering it. If soldered, the land must remain floating or tied to GND only; connecting to VCC or signal nets risks short circuits.

Can 74HC02BQ-Q100 interface directly with 5 V TTL outputs?

Not reliably - its CMOS inputs require VIH ≥ 3.15 V at VCC = 4.5 V, but standard TTL outputs guarantee only 2.4 V HIGH. Use 74HCT02BQ-Q100 instead, which has TTL-compatible inputs (VIH = 2.0 V min) and is pin-identical. Direct connection risks logic misreads under temperature or voltage variation.

What is the maximum recommended output load capacitance?

The datasheet specifies dynamic characteristics at CL = 50 pF, and CPD = 22 pF assumes that loading. For stable operation beyond 50 pF, add series resistance (e.g., 33 Ω) near the output to damp ringing. Exceeding 100 pF increases tpd nonlinearly and may cause timing violations in synchronous systems.

Does this device support partial power-down operation?

No - 74HC02BQ-Q100 lacks Ioff protection. If VCC = 0 V while inputs remain biased, current can flow through input clamp diodes into the substrate, potentially causing latch-up or excessive ICC. Always power VCC before applying input signals, and use external isolation for hot-swap scenarios.