Nexperia USA Inc. 74AHC74PW,118

Overview

74AHC74PW,118 from Nexperia is a dual positive-edge-triggered D-type flip-flop with asynchronous set (SD) and reset (RD) inputs, complementary Q/Q̅ outputs per section, Schmitt-trigger clock inputs, and CMOS-level input compatibility. It operates from 2.0 V to 5.5 V, delivers 115 MHz max frequency at 5 V/50 pF load, and supports industrial temperature range (–40 °C to +125 °C). It is used in digital logic synchronization, state machine control, and clock-domain crossing in embedded microcontroller peripherals.

For engineers reviewing the 74AHC74PW,118 datasheet, 74AHC74PW,118 pinout, 74AHC74PW,118 application, or 74AHC74PW,118 equivalent, this page provides verified functional identity, TSSOP14 package mapping, 14-pin terminal roles, propagation delay (3.7 ns typ @ 5 V), setup/hold timing (5.0 ns / 0.5 ns), and validated alternatives for logic-level translation and dual-flip-flop replacement scenarios.

Technical Context

This device implements two independent edge-triggered D latches sharing no internal coupling-each with dedicated D, CP, SD, RD, Q, and Q̅ terminals. The asynchronous SD and RD inputs override clock action and force Q to HIGH or LOW respectively when asserted LOW, independent of CP state.

Schmitt-trigger action on both CP inputs enables robust operation with slow-rising or noisy clock signals, while input voltage tolerance up to 7.0 V allows interfacing with higher-voltage logic families without level shifters. The 74AHC variant accepts CMOS-level inputs (VIH ≥ 3.85 V @ VCC = 5.5 V), distinguishing it from the TTL-compatible 74AHCT74.

Key Specifications

Pinout & Package

TSSOP14 package (SOT402-1): 14-lead thin shrink small outline, 4.4 mm body width, 0.65 mm pitch, exposed pad not electrically connected.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74AHCT74PW,118, the 74AHC74PW,118 offers superior noise immunity and wider input voltage range but requires CMOS-level drive; versus SN74LVC74APWRE4, it supports 5 V operation and mixed-voltage interfacing at the cost of slightly higher delay and static current.

Availability

74AHC74PW,118 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, medical device user interfaces, and programmable logic controller input modules requiring stable component supply across extended temperature ranges.

Supply support for 74AHC74PW,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 logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74AHC family targets high-speed, low-power digital logic applications where rail-to-rail input tolerance, wide supply range, and robust noise immunity are critical-especially in mixed-voltage embedded systems.

FAQ

Can 74AHC74PW,118 operate reliably at 2.0 V supply?

Yes. The device is fully specified down to 2.0 V: propagation delay remains ≤15.0 ns (max), fmax reaches 50 MHz (min), and VIH/VIL thresholds scale correctly. Input hysteresis and output drive strength are maintained across the entire 2.0–5.5 V range, making it suitable for battery-powered 2.5 V or 3.3 V systems with brown-out resilience.

What is the function of the exposed thermal pad on the TSSOP14 package?

The SOT402-1 package has no exposed thermal pad; that feature applies only to DHVQFN (SOT762-1) and DHXQFN (SOT8014-1) variants. The TSSOP14 uses standard leadframe construction-thermal dissipation occurs through leads and PCB copper. No soldering or grounding of a pad is required or applicable for 74AHC74PW,118.

How does the Schmitt-trigger clock input improve system reliability?

The Schmitt-trigger action provides ~0.3 V hysteresis on CP inputs, rejecting noise spikes and slow-rising edges that could cause multiple clock transitions. This eliminates false triggering in electrically noisy environments (e.g., motor drives or automotive harnesses) and permits use of RC-filtered or crystal-less clock sources without added debouncing circuitry.

Is 74AHC74PW,118 pin-compatible with older 74HC74 variants?

Yes-pinout matches JEDEC-standard 14-lead dual DFF layout (SOT108-1, SOT402-1, etc.). However, 74AHC74PW,118 features improved ESD robustness (HBM > 2000 V), tighter propagation delay distribution, and enhanced input voltage tolerance (up to 7.0 V) compared to legacy 74HC74, enabling drop-in replacement with higher reliability in new designs.