Nexperia USA Inc. 74HC174PW,112

Overview

74HC174PW,112 from NXP Semiconductors is a hex D-type flip-flop with asynchronous reset, operating at 2V–6V supply, 25mA output drive, and propagation delay of 15ns (typ.) at 4.5V. It functions as a synchronous edge-triggered storage element in digital control logic, commonly used in address latching and data register stages of microcontroller peripheral interfaces.

For engineers reviewing the 74HC174PW,112 datasheet, 74HC174PW,112 pinout, 74HC174PW,112 application, or 74HC174PW,112 equivalent, key selection criteria include clock-to-Q timing, reset behavior, fan-out capability, and compatibility with 5V TTL/CMOS logic families in sequential logic design.

Technical Context

This device implements six independent positive-edge-triggered D flip-flops, each with individual D input, Q output, and shared asynchronous master reset (MR̅). All flip-flops update on the rising edge of the common clock (CP) signal.

Input thresholds are CMOS-compatible (V_IH = 3.15V min at V_CC = 4.5V; V_IL = 1.35V max), and outputs drive ±5.2mA at V_CC = 4.5V, enabling direct interfacing with standard 74HC/74HCT loads without buffering.

Key Specifications

Pinout & Package

TSSOP-16 package: 4.4mm × 5.0mm body, 0.65mm pitch, surface-mount, lead-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74HC174N and 74HCT174PW,118, the 74HC174PW,112 offers optimal SMT manufacturability in space-constrained designs while maintaining full 74HC logic compatibility-whereas the DIP variant trades density for serviceability, and the HCT version trades input threshold flexibility for TTL legacy support.

Availability

74HC174PW,112 is available at Aetrix Electronics and suitable for industrial control panels, microcontroller peripheral interfaces, and digital instrumentation requiring stable component supply and long-term obsolescence management.

Supply support for 74HC174PW,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

NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.

The 74HC logic family was developed by NXP to deliver pin- and function-compatible replacements for legacy TTL with lower power, higher noise immunity, and broader supply range-targeting cost-sensitive, reliability-critical digital control systems.

FAQ

Is the 74HC174PW,112 compatible with 3.3V logic systems?

Yes - it operates down to 2.0V supply and meets 3.3V logic thresholds: V_IL ≤ 0.8V and V_IH ≥ 2.0V at V_CC = 3.3V. Input hysteresis is absent, so clean signal edges and proper termination are recommended to avoid metastability near switching thresholds.

What is the maximum clock frequency supported?

The device supports reliable operation up to 30MHz under typical conditions (V_CC = 4.5V, T_A = 25°C), based on 15ns propagation delay and 6ns setup/hold times. At 6.0V, f_MAX increases to ~45MHz; derating applies above 70°C ambient.

Does MR̅ affect outputs during clock transitions?

Yes - MR̅ is asynchronous and overrides clock activity: asserting MR̅ forces all Q outputs low immediately, independent of CP state or edge. Release of MR̅ does not trigger a clock event; the next rising CP edge captures new D inputs.

Can unused inputs be left floating?

No - all D inputs and CP must be tied to defined logic levels. Floating D inputs cause unpredictable Q states after clock edges; floating CP risks unintended triggering from noise. Unused D pins should be tied to V_CC or GND; CP must be controlled via system logic or pull-down.