Nexperia USA Inc. 74HCT02BQ-Q100,115

Overview

74HCT02BQ-Q100 from Nexperia is an automotive-qualified quad 2-input NOR gate in DHVQFN14 package, operating from -40 °C to +125 °C with TTL-compatible inputs (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V), VOH ≥ 3.98 V and VOL ≤ 0.26 V at 4 mA load, used for logic-level signal inversion and combinatorial control in body electronics modules.

For engineers reviewing the 74HCT02BQ-Q100 datasheet, 74HCT02BQ-Q100 pinout, 74HCT02BQ-Q100 application, or 74HCT02BQ-Q100 equivalent, key selection criteria include AEC-Q100 Grade 1 qualification, 4.5–5.5 V supply compatibility, propagation delay ≤29 ns (max at 125 °C), input clamp diodes enabling overvoltage-tolerant interfacing, and side-wettable flanks for AOI-capable solder joint inspection.

Technical Context

This device implements four independent 2-input NOR gates using silicon-gate CMOS technology with TTL-level input thresholds, ensuring direct compatibility with legacy 5 V microcontroller GPIOs and industrial logic families without level-shifting. Each gate features input clamp diodes that allow safe interface to signals exceeding VCC when used with current-limiting resistors.

The DHVQFN14 package (SOT762-1) provides thermal enhancement via an exposed die pad (non-electrical by default), supports automatic optical inspection through side-wettable flanks, and delivers low dynamic power dissipation (CPD = 24 pF) with propagation delays tightly specified across automotive temperature extremes.

Key Specifications

Pinout & Package

DHVQFN14 package (SOT762-1): 2.5 × 3.0 × 0.85 mm body, no leads, 14 terminals, side-wettable flanks for AOI, thermally enhanced exposed pad (non-electrical unless connected to GND).

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HCT02PW-Q100 and SN74HCT02QPWRQ1, the 74HCT02BQ-Q100 offers superior thermal performance and AOI support in a smaller footprint, while maintaining tighter propagation delay control essential for automotive timing-critical subsystems.

Availability

74HCT02BQ-Q100 is available at Aetrix Electronics and suitable for automotive body control modules, powertrain sensor interfaces, ADAS camera sequencing, and infotainment reset coordination requiring stable component supply across extended temperature ranges and AEC-Q100 compliance.

Supply support for 74HCT02BQ-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 global semiconductor expert specializing in high-performance, high-reliability logic, analog, and discrete components, with core expertise in automotive-grade silicon solutions.

The 74HCT series targets automotive and industrial applications demanding TTL-compatible logic with AEC-Q100 qualification, emphasizing robustness, wide temperature operation, and manufacturability in high-volume SMT processes.

FAQ

What is the maximum allowable supply voltage for continuous operation?

The absolute maximum supply voltage (VCC) is +7.0 V per IEC 60134 limiting values, but recommended continuous operation is strictly limited to 4.5–5.5 V per AEC-Q100 qualification conditions. Exceeding 5.5 V voids automotive qualification and risks parametric shift or latch-up under transient conditions.

Can this device interface directly with 3.3 V microcontroller outputs?

No - the 74HCT02BQ-Q100 requires minimum VIH = 2.0 V, which is compatible with 3.3 V logic HIGH levels, but its VCC must be 4.5–5.5 V to meet AEC-Q100 spec. Direct connection to 3.3 V outputs is electrically safe, but output swing (VOH ≈ 4.0 V) will not be compatible with 3.3 V inputs without level translation.

Is the exposed thermal pad electrically connected internally?

No - the exposed pad (terminal 1 index area) has no internal electrical connection. Per datasheet note, it may remain floating or be soldered to GND for thermal improvement, but must never be connected to VCC or left ungrounded in thermally constrained layouts without thermal simulation validation.

How does the input clamp diode affect design of overvoltage-protected interfaces?

The integrated clamp diodes allow safe biasing of inputs up to VCC + 0.5 V when paired with a series current-limiting resistor (e.g., 10 kΩ for 12 V signals). This eliminates need for external TVS or Schottky clamps in LIN bus wake-up or CAN node status monitoring circuits, reducing component count and board area.