Nexperia USA Inc. 74ALVC574PW,118

Overview

74ALVC574PW,118 from Nexperia is an octal positive-edge-triggered D-type flip-flop with 3-state outputs, designed for data latching and bus interface in low-voltage digital systems. It operates from 1.65 V to 3.6 V, features IOFF partial power-down protection, Schmitt-trigger inputs for noise immunity, and supports -40 °C to +125 °C industrial temperature range - used in FPGA I/O expansion and microcontroller peripheral buffering.

For engineers reviewing the 74ALVC574PW,118 datasheet, 74ALVC574PW,118 pinout, 74ALVC574PW,118 application, or 74ALVC574PW,118 equivalent, key selection criteria include edge-trigger timing (tsu = 0.8 ns, th = 0.7 ns), 3-state enable/disable latency (ten = 1.0–4.6 ns), supply voltage flexibility (1.65–3.6 V), IOFF-enabled hot-swap capability, and TSSOP20 package compatibility with high-density PCB layouts.

Technical Context

This device implements eight independent D-type latches synchronized to the rising edge of CP, with asynchronous 3-state control via active-low OE. Each flip-flop samples Dn on LOW-to-HIGH clock transition and holds state until next valid edge - no internal reset or preset logic is present.

Schmitt-trigger inputs tolerate slow signal edges (Δt/ΔV down to 10 ns/V at 3.6 V), while IOFF circuitry disables outputs and blocks backflow current when VCC = 0 V, enabling safe partial power-down in mixed-supply systems without external isolation.

Key Specifications

Pinout & Package

TSSOP20 package (SOT360-1): 20-pin thin shrink small outline, 4.4 mm body width, 0.65 mm pitch, lead-free and RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC574APWR, 74ALVC574PW,118 offers superior IOFF protection and tighter timing (0.8 ns tsu vs 1.2 ns), while 74LVC574ADB,118 trades compactness for easier hand-soldering and thermal derating headroom - both require validation of OE timing and bus capacitance limits in target layout.

Availability

74ALVC574PW,118 is available at Aetrix Electronics and suitable for FPGA I/O expansion, microcontroller bus buffering, industrial control logic, and digital signal routing requiring stable component supply across extended temperature ranges.

Supply support for 74ALVC574PW,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 focused on essential efficiency technologies - delivering high-performance, reliable, and scalable logic, analog, and discrete components.

The ALVC logic family targets high-speed, low-voltage applications demanding precise timing, robust noise immunity, and seamless integration across mixed-supply digital systems - especially where power sequencing and industrial reliability are critical.

FAQ

What is the minimum recommended VCC for guaranteed operation?

The 74ALVC574PW,118 is fully specified from 1.65 V to 3.6 V. At 1.65 V, VIH = 0.65 × VCC (≥1.07 V) and VOL ≤ 0.3 V at 6 mA load are guaranteed across -40 °C to +125 °C. Operation below 1.65 V may result in undefined logic levels or increased propagation delay.

Can OE be toggled while CP is active without affecting stored data?

Yes. The OE input is asynchronous and does not affect internal flip-flop states - data remains latched regardless of OE transitions. Outputs enter or exit high-impedance state within ten = 1.0–4.6 ns after OE assertion, independent of CP activity or D-input changes.

Is the TSSOP20 package (SOT360-1) compatible with standard reflow profiles?

Yes. The 74ALVC574PW,118 in TSSOP20 meets JEDEC J-STD-020 moisture sensitivity level MSL-1 (unlimited floor life) and is qualified for standard Pb-free reflow profiles with peak temperature up to 260 °C. Recommended soak time is 60–120 seconds at 150–200 °C prior to ramp-up.

Does this device support hot insertion when VCC = 0 V?

Yes. The integrated IOFF circuit actively disables outputs and limits backflow current to ±10 μA maximum when VCC = 0 V and any input or output is driven - enabling safe live insertion into powered backplanes or hot-swap modules without external protection diodes.