NXP Semiconductors 74HC03D,653

Overview

74HC03D,653 from Nexperia is a quad 2-input NAND gate IC with open-drain outputs, designed for wired-AND logic, level translation, and bus interface applications in digital systems. It operates from 2.0 V to 6.0 V, delivers propagation delay as low as 8 ns at VCC = 6.0 V, supports -40 °C to +125 °C ambient range, and features CMOS-level inputs with input clamp diodes enabling overvoltage-tolerant interfacing.

For engineers reviewing the 74HC03D,653 datasheet, 74HC03D,653 pinout, 74HC03D,653 application, or 74HC03D,653 equivalent, key selection criteria include open-drain output drive capability (IO = -25 mA), input voltage thresholds (VIH = 4.2 V min at VCC = 6.0 V), static current consumption (ICC = 2.0 μA typ at VCC = 6.0 V), and SO14 package thermal derating (10.1 mW/K above 100 °C).

Technical Context

This device implements four independent 2-input NAND gates, each with an open-drain output stage requiring external pull-up for logic HIGH assertion. The input structure includes integrated clamp diodes referenced to VCC and GND, allowing safe interfacing to signals exceeding supply voltage when used with current-limiting resistors.

It complies with JEDEC JESD7A (2.0–6.0 V) and JESD8C (2.7–3.6 V), supports HBM ESD >2000 V and CDM >1000 V, and exhibits latch-up immunity exceeding 100 mA per JESD78 Class II Level B - confirming robust operation in mixed-voltage and noise-prone industrial environments.

Key Specifications

Pinout & Package

74HC03D,653 is housed in a plastic small outline package (SO14), SOT108-1, with 14 leads and 3.9 mm body width. Pin 1 is index-marked; lead pitch is 1.27 mm; package meets JEDEC MS-012 standards.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HC03D,653, the 74HCT03D,653 offers broader input compatibility in 5 V systems but higher static current at low VCC, while SN74LVC03APWR delivers superior speed and efficiency at 3.3 V but sacrifices voltage flexibility and open-drain robustness in industrial bus roles.

Availability

74HC03D,653 is available at Aetrix Electronics and suitable for industrial automation interfaces, automotive body control modules, and IoT sensor hub designs requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HC03D,653 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 logic, analog, and MOSFET solutions optimized for efficiency, reliability, and manufacturability in high-volume applications.

The 74HC03D,653 belongs to Nexperia's HC-series logic family, engineered for robust CMOS performance in industrial, automotive, and consumer systems where wide supply range, noise immunity, and open-drain flexibility are critical.

FAQ

Can 74HC03D,653 drive a 5 V relay coil directly?

Yes - its open-drain output can sink up to 25 mA at VCC = 6.0 V, sufficient for most 5 V reed relays with coil resistance ≥200 Ω. Connect the relay between VCC and the output pin, with a flyback diode across the coil. Ensure total output current across all active gates stays within package power limits (500 mW at ≤100 °C).

What is the maximum allowable pull-up voltage on the open-drain outputs?

The absolute maximum output voltage (VO) is +7 V per datasheet Table 4, so pull-up voltages up to 7 V are permitted. However, output current must remain within ±25 mA, and the total power dissipation (including VI × IIK from clamped inputs) must stay below 500 mW. For 12 V pull-ups, use ≥470 Ω series resistors to limit current.

Does 74HC03D,653 support hot-swap insertion into a live 5 V bus?

No - it lacks explicit hot-swap protection circuitry. While input clamp diodes provide some overvoltage tolerance, applying VCC after signal inputs may cause latch-up or excessive IIK current. Always power VCC before applying input signals, and use series resistors (≥1 kΩ) on all inputs in hot-plug scenarios.

How does propagation delay vary with supply voltage and load capacitance?

At CL = 50 pF, tpd drops from 95 ns (VCC = 2.0 V) to 8 ns (VCC = 6.0 V). With CL = 15 pF, delay further improves to 8 ns at VCC = 5.0 V. This inverse relationship means timing margins tighten significantly at low VCC or high CL - verify worst-case delay (145 ns at 2.0 V/50 pF) in battery-depleted or high-capacitance routing conditions.