Nexperia USA Inc. 74HC03DB-Q100J

Overview

74HC03DB-Q100 from Nexperia is an automotive-grade quad 2-input NAND gate with open-drain outputs, designed for level-shifting and wired-AND logic in vehicle body control modules. It operates from 2.0 V to 6.0 V, supports -40 °C to +125 °C ambient range, and features CMOS input levels with clamp diodes enabling overvoltage-tolerant interfacing. Its AEC-Q100 Grade 1 qualification confirms suitability for under-hood infotainment power management.

For engineers reviewing the 74HC03DB-Q100 datasheet, 74HC03DB-Q100 pinout, 74HC03DB-Q100 application, or 74HC03DB-Q100 equivalent, key selection criteria include open-drain drive capability (5.2 mA sink at 4.5 V), propagation delay (10 ns typical at 4.5 V), input voltage thresholds (VIH = 3.15 V min at VCC = 4.5 V), and automotive thermal compliance (-40 °C to +125 °C).

Technical Context

This device implements four independent NAND logic functions with true open-drain outputs-no internal pull-up-requiring external termination for HIGH-level assertion. Each gate accepts two inputs and delivers inverted, current-sinking output compatible with I²C, SMBus, and interrupt bus architectures.

Input clamp diodes allow safe interface to signals exceeding VCC (e.g., 5 V logic driving a 3.3 V supply rail), while latch-up immunity (>100 mA per JESD78 Class II Level B) ensures robustness in noisy automotive environments. The 74HC variant uses CMOS-compatible input thresholds, distinguishing it from the TTL-level 74HCT03DB-Q100 sibling.

Key Specifications

Pinout & Package

74HC03DB-Q100 is supplied in SSOP14 (SOT337-1) package: plastic shrink small outline, 14 leads, body width 5.3 mm, pitch 0.65 mm. Pin 1 index marked by notch or dot.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad NAND gate applications.

Compared with 74HC03D-Q100, the DB variant offers 25 % smaller footprint and finer pitch for dense automotive clusters; versus 74HCT03DB-Q100, the HC version provides tighter VIH/VIL margins for noise-immune operation in 3.3 V domains, making it optimal for modern MCU-peripheral interfacing.

Availability

74HC03DB-Q100 is available at Aetrix Electronics and suitable for automotive body electronics, infotainment power sequencing, LED lighting bus interfaces, and diagnostic communication lines requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HC03DB-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 delivering high-performance, reliable logic, analog, and MOSFET solutions with focus on automotive, industrial, and mobile markets.

The 74HC-Q100 series delivers AEC-Q100 qualified logic devices optimized for automotive subsystems demanding extended temperature operation, ESD resilience, and long-term supply stability - especially in body control, lighting, and gateway applications.

FAQ

Can 74HC03DB-Q100 drive a 4.7 kΩ pull-up resistor on a 5 V bus?

Yes. At VCC = 4.5 V and VO = 0.4 V, the device guarantees ≥5.2 mA sink current, which fully satisfies the 1.06 mA load imposed by a 4.7 kΩ pull-up to 5 V. This ensures clean LOW-level assertion and noise margin compliance per I²C standard.

Does this part support mixed-voltage interfacing, such as 3.3 V logic driving a 5 V bus?

Yes - its input clamp diodes allow safe interface to voltages exceeding VCC when used with appropriate series current-limiting resistors. For example, a 5 V signal can drive a 3.3 V-powered 74HC03DB-Q100 input if a 10 kΩ resistor limits clamp current to <1 mA, preventing damage per datasheet Section 2.

What is the maximum clock frequency supported for toggle operation?

The device is not intended for clock distribution. Its propagation delay (10 ns typical) and transition time (7 ns typical) limit reliable toggle frequency to ≤25 MHz under loaded conditions (CL = 50 pF). For higher-speed applications, dedicated clock buffers or flip-flops should be used instead.

Is thermal derating required above 100 °C ambient?

Yes - for the SSOP14 package (SOT337-1), total power dissipation derates linearly at 7.3 mW/K above 81 °C per datasheet Table 4 note [2]. At 125 °C ambient, Ptot must be limited to ≤468 mW to maintain safe junction temperature, assuming standard PCB copper area and no forced airflow.