Nexperia USA Inc. 74LVC374ADB,118

Overview

74LVC374ADB,118 from Nexperia is an octal positive-edge-triggered D-type flip-flop with 3-state outputs, designed for data latching and bus isolation in mixed-voltage digital systems. It operates from 1.2 V to 3.6 V supply, tolerates 5.5 V inputs/outputs, features IOFF partial power-down protection, and supports -40 °C to +125 °C ambient operation - used in industrial control backplanes and FPGA I/O expansion interfaces.

For engineers reviewing the 74LVC374ADB,118 datasheet, 74LVC374ADB,118 pinout, 74LVC374ADB,118 application, or 74LVC374ADB,118 equivalent, key selection criteria include 5.5 V input tolerance, 3-state output timing (t_en ≤ 9.5 ns, t_dis ≤ 7.5 ns at V_CC = 3.3 V), IOFF leakage < ±10 μA at V_CC = 0 V, and SO20 package compatibility with legacy 74-series footprints.

Technical Context

This device implements eight independent D-type latches synchronized to the LOW-to-HIGH transition of the CP input, with asynchronous 3-state control via active-LOW OE. Each flip-flop samples D_n only when setup (t_su ≥ 2.0 ns) and hold (t_th ≥ 1.5 ns) times are met relative to the clock edge.

The IOFF circuit disables outputs during power-down by disconnecting internal paths when V_CC = 0 V, preventing backflow current; Schmitt-trigger inputs ensure robust noise immunity with input rise/fall rate support up to 20 ns/V at V_CC = 1.65 V.

Key Specifications

Pinout & Package

74LVC374ADB,118 is supplied in a plastic small outline package (SO20, SOT163-1) with 20 leads, 7.5 mm body width, and standard 1.27 mm lead pitch - compatible with automated PCB assembly and legacy 74-series sockets.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal D-type flip-flop applications.

Compared with 74LVC374ADB,118, the TSSOP alternatives offer smaller footprint but reduced thermal headroom; the SO20 version provides superior heat dissipation and legacy socket compatibility - critical for high-reliability industrial designs where long-term solder joint integrity is prioritized over board area.

Availability

74LVC374ADB,118 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, FPGA configuration bus isolation, and legacy microcontroller bus interface applications requiring stable component supply across extended temperature ranges.

Supply support for 74LVC374ADB,118 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 miniaturization in automotive, industrial, and consumer electronics.

The 74LVC series targets low-voltage, high-speed digital interfacing with robust mixed-voltage operation - specifically engineered for seamless integration between legacy 5 V systems and modern sub-3.3 V SoCs and FPGAs.

FAQ

What is the maximum clock frequency supported by 74LVC374ADB,118?

The device supports up to 150 MHz at V_CC = 3.0–3.6 V and +25 °C ambient, with guaranteed minimum f_max of 120 MHz across the full -40 °C to +125 °C operating range. This is determined by propagation delay (t_pd ≤ 7.0 ns) and pulse width (t_W ≥ 3.0 ns) specifications under recommended conditions.

Can 74LVC374ADB,118 safely interface with 5 V microcontrollers while powered at 3.3 V?

Yes - its inputs are overvoltage tolerant to 5.5 V regardless of V_CC, allowing direct connection to 5 V outputs without external resistors or level shifters. The 3.3 V supply ensures compatible output swing (VOH ≥ 2.2 V, VOL ≤ 0.55 V at I_O = 24 mA), meeting 5 V TTL input thresholds.

How does the IOFF feature protect the device during partial power-down?

When V_CC = 0 V, the IOFF circuitry electrically isolates all outputs from internal logic, limiting OFF-state leakage to ±10 μA even with 5.5 V applied to pins. This prevents reverse current flow through parasitic paths that could damage upstream drivers or destabilize shared power rails in modular systems.

Is the SO20 package of 74LVC374ADB,118 compatible with standard 74-series footprints?

Yes - the SOT163-1 (SO20) package has 1.27 mm lead pitch, 7.5 mm body width, and identical 20-pin layout to legacy 74HC374 and 74LS374 devices. Pin 1 indexing and thermal pad absence match industry-standard SOIC footprints, enabling drop-in replacement in existing designs without PCB redesign.