Nexperia USA Inc. 74HCT574PW-Q100,11

Overview

74HCT574PW-Q100 from Nexperia is an automotive-qualified octal D-type positive-edge-triggered flip-flop with 3-state outputs, operating from 4.5 V to 5.5 V supply, supporting −40 °C to +125 °C ambient range, and featuring 12 ns typical propagation delay (VCC = 4.5 V, CL = 50 pF), 3 ns typical output transition time, and TTL-compatible input thresholds - used for bus-oriented data latching in automotive body control modules.

For engineers reviewing the 74HCT574PW-Q100 datasheet, 74HCT574PW-Q100 pinout, 74HCT574PW-Q100 application, or 74HCT574PW-Q100 equivalent, key selection criteria include edge-trigger timing margin (tsu = 12 ns, th = 5 ns), 3-state enable timing (ten = 19 ns, tdis = 16 ns), output drive capability (±6 mA at VCC = 4.5 V), and AEC-Q100 Grade 1 qualification for under-hood deployment.

Technical Context

This device implements eight independent D-type latches synchronized to the LOW-to-HIGH clock transition, with a common active-low 3-state output enable (OE) that places all Q outputs in high-impedance without affecting internal flip-flop states. Inputs include clamp diodes enabling safe interfacing to voltages exceeding VCC via current-limiting resistors.

It operates in two distinct logic families: 74HCT574-Q100 uses TTL-level inputs (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5 V–5.5 V), while maintaining CMOS-level output drive and noise immunity. The TSSOP20 package (SOT360-1) supports automated optical inspection via side-wettable flanks.

Key Specifications

Pinout & Package

TSSOP20 package (SOT360-1): 4.4 mm body width, 0.65 mm pitch, side-wettable flanks for AOI-compatible solder joint inspection.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HCT574D-Q100, the PW variant offers 40 % smaller PCB area and AOI-ready solder joints; versus SN74HCT574QPWRQ1, it delivers lower typical supply current and tighter propagation delay distribution - critical for timing-critical automotive bus arbitration.

Availability

74HCT574PW-Q100 is available at Aetrix Electronics and suitable for automotive body control units, instrument cluster interfaces, engine control module diagnostics, and ADAS sensor data acquisition requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HCT574PW-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 delivering high-performance logic, discrete, and MOSFET solutions optimized for automotive, industrial, and mobile applications with emphasis on reliability and energy efficiency.

This device belongs to Nexperia's automotive-qualified 74HCT logic family, designed specifically for robust, low-power data latching in harsh-temperature vehicle subsystems where signal integrity and qualification compliance are mandatory.

FAQ

What is the maximum clock frequency supported by the 74HCT574PW-Q100?

The device supports a maximum clock frequency of 69 MHz at VCC = 4.5 V and CL = 50 pF, derived from its 50 ns maximum propagation delay (tpd). At reduced load capacitance (CL = 15 pF), fmax increases to 76 MHz. This enables use in high-speed bus buffering applications such as automotive infotainment data paths.

Can the 74HCT574PW-Q100 operate with a 3.3 V supply?

No - the 74HCT574PW-Q100 is specified only for 4.5 V to 5.5 V operation per its recommended conditions. Its TTL-compatible inputs require VIH ≥ 2.0 V, but VCC < 4.5 V violates the absolute minimum supply rating and invalidates output drive strength and timing guarantees. Use 74LVC574A for 3.3 V systems.

How does the 3-state output enable (OE) interact with the internal flip-flop state?

The OE input affects only output drivers - asserting OE HIGH places Q0–Q7 in high-impedance regardless of stored D-input values, but internal flip-flop states remain unchanged and retain their last latched data. This allows seamless bus sharing without disrupting ongoing logic operations in the host system.

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

Yes - the SOT360-1 package is qualified for lead-free reflow per JEDEC J-STD-020, with peak temperature up to 260 °C. Its side-wettable flanks are designed for compatibility with standard stencil thicknesses (125 μm) and aperture ratios (0.6–0.75), ensuring reliable solder joint formation in automotive manufacturing lines.