Nexperia USA Inc. 74HCT574D-Q100,118

Overview

74HCT574D-Q100 from Nexperia is an automotive-grade octal D-type flip-flop with positive-edge clock triggering, 3-state non-inverting outputs, and TTL-compatible input thresholds. It operates from 4.5 V to 5.5 V across –40 °C to +125 °C, delivers 18 ns propagation delay (VCC = 4.5 V, CL = 50 pF), and features a dedicated output enable (OE) pin for bus-oriented data latching in engine control units and ADAS domain controllers.

For engineers reviewing the 74HCT574D-Q100 datasheet, 74HCT574D-Q100 pinout, 74HCT574D-Q100 application, or 74HCT574D-Q100 equivalent, this device serves as a high-reliability, AEC-Q100 Grade 1–qualified register for synchronizing parallel digital signals in automotive microcontroller interfaces, sensor data acquisition buses, and CAN/LIN subsystem I/O expansion.

Technical Context

This device implements eight independent D-type latches triggered on the LOW-to-HIGH transition of CP, with set-up time (12 ns min at VCC = 4.5 V) and hold time (5 ns min) strictly defined for robust timing margin. Its OE input operates asynchronously and independently of clock state, enabling dynamic bus contention control without affecting stored register values.

The 74HCT574D-Q100 uses TTL-level input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5 V to 5.5 V), ensuring compatibility with legacy 5 V logic families, while maintaining CMOS power efficiency (ICC ≤ 8 μA typical at VCC = 5.5 V, 25 °C) and high noise immunity (Δt/ΔV ≥ 1.67 ns/V).

Key Specifications

Pinout & Package

74HCT574D-Q100 is housed in a plastic small outline package (SO20, SOT163-1) with 20 leads, 7.5 mm body width, and gull-wing leads suitable for automated PCB assembly and AOI inspection.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74HCT574QPWRQ1, the 74HCT574D-Q100 offers higher mechanical robustness in SO20 packaging for vibration-prone environments; versus 74LVC574APW-Q100, it provides native 5 V tolerance and direct TTL interoperability without external translation.

Availability

74HCT574D-Q100 is available at Aetrix Electronics and suitable for engine control units, ADAS sensor hubs, instrument cluster displays, and body control modules requiring stable component supply across extended automotive temperature ranges and long production lifecycles.

Supply support for 74HCT574D-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 focused on essential semiconductors for automotive, industrial, and consumer applications, delivering high-reliability logic, discrete, and MOSFET solutions.

The 74HCT574D-Q100 belongs to Nexperia's automotive-qualified logic portfolio, designed specifically to meet stringent AEC-Q100 requirements for functional safety-critical data path buffering and synchronization in vehicle electronic systems.

FAQ

What is the maximum clock frequency supported by the 74HCT574D-Q100?

The 74HCT574D-Q100 supports a maximum clock frequency of 24 MHz at VCC = 4.5 V and CL = 50 pF, based on its 18 ns typical propagation delay and 16 ns minimum pulse width. At VCC = 5.0 V and CL = 15 pF, fmax increases to 76 MHz - verified in Table 7 of the official Nexperia datasheet Rev. 6 (2024).

Can the 74HCT574D-Q100 be used with a 3.3 V microcontroller?

No - the 74HCT574D-Q100 requires VCC between 4.5 V and 5.5 V and has TTL input thresholds (VIH ≥ 2.0 V), making it incompatible with direct 3.3 V logic interfacing. For 3.3 V systems, use the pin-compatible 74LVC574APW-Q100, which operates from 1.65 V to 3.6 V and features 3.3 V–compatible input levels.

Is the OE pin active-high or active-low?

The OE pin is active-LOW: when OE = LOW, Q0–Q7 outputs are enabled and reflect the latched D0–D7 values; when OE = HIGH, all outputs enter high-impedance (Z) state. This behavior is confirmed in Table 3 (Function Table) and Pin Description (Section 5.2) of the Nexperia datasheet.

Does the 74HCT574D-Q100 have built-in ESD protection?

Yes - the device includes on-chip ESD protection rated to HBM > 2000 V and CDM > 1000 V per ANSI/ESDA/JEDEC JS-001 Class 2 and JS-002 Class C3 standards, as specified in Section 2 (Features and benefits) and Table 9 of the datasheet. No external protection components are required for standard handling and board-level operation.