Nexperia USA Inc. 74HC574PW,112

Overview

74HC574PW,112 from Nexperia is an 8-bit positive-edge-triggered D-type flip-flop with 3-state outputs, designed for bus-oriented digital systems requiring synchronized data latching and controlled output driving. It operates across 2.0 V to 6.0 V supply, features independent clock (CP) and active-low output enable (OE), and supports industrial temperature range (−40 °C to +125 °C) in TSSOP20 package - used in microcontroller peripheral interfacing and address/data bus buffering.

For engineers reviewing the 74HC574PW,112 datasheet, 74HC574PW,112 pinout, 74HC574PW,112 application, or 74HC574PW,112 equivalent, key selection considerations include its CMOS-level input compatibility, 3-state output timing (enable/disable times ≤42 ns at VCC = 4.5 V), propagation delay (≤30 ns), and thermal-enhanced TSSOP20 footprint for high-density PCB layouts.

Technical Context

This device implements eight independent D-type latches triggered on the LOW-to-HIGH transition of CP, with set-up time (tsu) ≥12 ns and hold time (th) ≥5 ns at VCC = 4.5 V. Each latch captures Dn inputs only when OE is LOW, preserving stored state regardless of OE transitions.

The 3-state outputs are non-inverting and fully decoupled from internal register operation: OE HIGH forces Q0–Q7 into high-impedance mode without altering flip-flop states. Input clamp diodes allow safe interfacing to voltages exceeding VCC when current-limiting resistors are used.

Key Specifications

Pinout & Package

TSSOP20 package (SOT360-1): 20-pin thin shrink small outline, 4.4 mm body width, 0.65 mm pitch, exposed pad optional for thermal enhancement.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HCT574PW,112, the 74HC574PW,112 offers superior noise immunity and wider supply flexibility but requires CMOS-level drive; versus SN74LV574APW, it trades speed for broader voltage/temperature coverage and legacy compatibility.

Availability

74HC574PW,112 is available at Aetrix Electronics and suitable for microcontroller bus interface, industrial PLC I/O expansion, test equipment signal capture, and legacy system bus buffering requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HC574PW,112 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 standard logic and analog components for industrial, automotive, and computing markets.

The 74HC574 belongs to Nexperia's high-speed CMOS logic portfolio, engineered for robust bus-holding, low-power synchronization, and seamless integration in resource-constrained embedded systems and industrial control hardware.

FAQ

What is the maximum clock frequency supported by the 74HC574PW,112?

The 74HC574PW,112 supports a maximum clock frequency of 35 MHz at VCC = 6.0 V and CL = 50 pF, dropping to 30 MHz at VCC = 4.5 V and 6.0 MHz at VCC = 2.0 V. These values reflect guaranteed operation under recommended conditions, with fmax defined by propagation delay and setup/hold timing margins.

Can the 74HC574PW,112 be used with 3.3 V logic systems?

Yes - the 74HC574PW,112 is fully specified down to 2.0 V supply and supports 3.3 V operation with VIH(min) = 2.1 V and VOL(max) = 0.26 V at IO = 6.0 mA, ensuring reliable interfacing with standard 3.3 V CMOS outputs and inputs without level translation.

Is the TSSOP20 package thermally enhanced?

The SOT360-1 (TSSOP20) package features a standard plastic body with no exposed thermal pad; however, its 0.65 mm pitch and thin profile provide improved thermal resistance over SO20. For high-power density designs, derating applies above 100 °C at 10.0 mW/K.

Does the OE pin affect internal register state during operation?

No - the OE pin controls only the output drivers. When OE is HIGH, Q0–Q7 enter high-impedance mode, but the internal flip-flop states remain unchanged and retain their last latched values until the next valid CP edge, regardless of OE state transitions.