Nexperia USA Inc. 74HC00BQ,115

Overview

74HC00BQ,115 from Nexperia is a quad 2-input NAND gate in DHVQFN14 package with 14 terminals, operating from 2.0 V to 6.0 V supply, specified for -40 °C to +125 °C, and delivering 9 ns typical propagation delay at VCC = 4.5 V with 50 pF load - used for digital logic inversion and combinational control in industrial microcontroller I/O expansion circuits.

For engineers reviewing the 74HC00BQ,115 datasheet, 74HC00BQ,115 pinout, 74HC00BQ,115 application, or 74HC00BQ,115 equivalent, this page delivers verified pin functions, thermal-enhanced QFN package details, CMOS-level input compatibility, and direct substitution guidance for legacy SO14 and TSSOP14 variants in space-constrained board designs.

Technical Context

This device implements four independent 2-input NAND gates using silicon-gate CMOS technology, with input clamp diodes enabling safe interfacing to voltages exceeding VCC when current-limiting resistors are used. Each gate exhibits symmetrical HIGH/LOW output drive capability up to ±4.0 mA at VCC = 4.5 V.

It operates across two logic families: 74HC00BQ uses CMOS-level inputs (VIH ≥ 3.2 V at VCC = 6.0 V), while its 74HCT00BQ counterpart accepts TTL-compatible inputs (VIH ≥ 2.0 V at VCC = 5.0 V). Both share identical pinout, package, and temperature range (-40 °C to +125 °C).

Key Specifications

Pinout & Package

DHVQFN14 (SOT762-1) package: leadless, thermally enhanced, 2.5 × 3.0 × 0.85 mm body, 0.5 mm pitch, exposed thermal pad (non-soldered by default), 14 terminals, pin 1 index area marked on top surface.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HC00D and 74HC00PW, the 74HC00BQ offers 62 % smaller footprint and 35 % lower thermal resistance - critical for high-density industrial controllers - but requires fine-pitch QFN reflow expertise and X-ray inspection for solder joint validation.

Availability

74HC00BQ,115 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, microcontroller GPIO conditioning, and automated test equipment signal routing requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HC00BQ,115 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 logic, analog, and MOSFET solutions, with manufacturing rooted in process innovation and automotive-grade reliability standards.

The 74HC00BQ belongs to Nexperia's 74HC logic family - designed for low-power, high-noise-immunity digital interfacing in industrial, consumer, and computing applications where consistent timing and broad supply flexibility are essential.

FAQ

Is the exposed thermal pad on the 74HC00BQ,115 package required to be soldered?

No. The exposed pad (terminal 1 index area) has no electrical function and requires no solder connection. If soldered, it must remain floating or be tied to GND - per Nexperia's SOT762-1 specification, doing so improves thermal performance by ~15 % but is not mandatory for functional operation.

Can 74HC00BQ,115 interface directly with 5 V TTL outputs?

Yes, but only when powered at VCC ≥ 4.5 V. At VCC = 5.0 V, VIH(min) = 3.15 V and VIL(max) = 1.35 V - fully compatible with standard TTL output levels (2.4 V HIGH, 0.4 V LOW). Operation below VCC = 4.5 V risks marginal recognition of TTL HIGH states.

What is the maximum clock frequency supported by 74HC00BQ,115 in toggle mode?

While not a clocked device, its 9 ns typical propagation delay (VCC = 4.5 V, CL = 50 pF) supports reliable data path operation up to ~55 MHz in toggle configurations. Derating to 40 MHz is recommended for worst-case conditions across temperature and supply variation.

Does 74HC00BQ,115 support partial power-down or I/O isolation when VCC = 0 V?

No. The device lacks Ioff or power-down modes. When VCC = 0 V, inputs and outputs enter high-impedance states only if all supply and reference connections are fully open - but input clamp diodes may conduct if external signals exceed GND by >0.5 V, risking back-powering or latch-up. Always power down before applying signals.