Nexperia USA Inc. 74AHCT74PW-Q100J

Overview

74AHCT74PW-Q100 from Nexperia is an automotive-qualified dual positive-edge-triggered D-type flip-flop with asynchronous active-LOW set (SD) and reset (RD), complementary Q/Q outputs, TTL-level input compatibility (V_IL ≤ 0.8 V, V_IH ≥ 2.0 V), 5.5 V max supply, and operation from –40 °C to +125 °C. It enables reliable data latching in engine control units, ADAS sensor interfaces, and body electronics clock domains.

For engineers reviewing the 74AHCT74PW-Q100 datasheet, 74AHCT74PW-Q100 pinout, 74AHCT74PW-Q100 application, or 74AHCT74PW-Q100 equivalent, key selection considerations include its AEC-Q100 Grade 1 qualification, Schmitt-trigger clock input for noise immunity, 5 ns minimum pulse width at 5 V, 5 ns setup/hold timing, and TSSOP14 package with 0.65 mm pitch for high-density automotive PCBs.

Technical Context

This device implements two independent edge-triggered D flip-flops in a single monolithic CMOS IC. Each section features fully asynchronous SD and RD inputs that override clocked behavior, enabling immediate state initialization or clearing regardless of CP timing.

The TTL-compatible input thresholds (V_IH = 2.0 V min, V_IL = 0.8 V max at V_CC = 4.5–5.5 V) allow direct interfacing with legacy 5 V logic families, while the Schmitt-trigger action on CP ensures robust operation with slow-rising or noisy clock signals up to 20 ns/V slew rate.

Key Specifications

Pinout & Package

TSSOP14 plastic thin shrink small outline package (SOT402-1); 14-lead, 4.4 mm body width, 0.65 mm lead 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 SN74LVC74AQPWRQ1 and MC74VHC74DT, the 74AHCT74PW-Q100 uniquely combines AEC-Q100 Grade 1 compliance, native TTL input compatibility, and Schmitt-trigger clock robustness-making it the only choice for legacy 5 V automotive control modules requiring drop-in replacement of LS TTL flip-flops.

Availability

74AHCT74PW-Q100 is available at Aetrix Electronics and suitable for engine control units, ADAS camera interfaces, and body control modules requiring stable component supply across extended temperature ranges and automotive lifecycle demands.

Supply support for 74AHCT74PW-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 high-volume, high-reliability logic, analog, and MOSFET solutions, with leadership in automotive-qualified components.

The 74AHCT74PW-Q100 belongs to Nexperia's AEC-Q100-qualified advanced logic family, designed specifically for automotive signal integrity, noise immunity, and long-term reliability in harsh electrical environments.

FAQ

Is the 74AHCT74PW-Q100 pin-compatible with standard 74LS74 devices?

Yes, it is pin-compatible with 74LS74 and other industry-standard dual D-type flip-flops in TSSOP14 (SOT402-1) packages. Pin assignments for SD, RD, D, CP, Q, and Q match JEDEC-standard layouts, enabling direct replacement without PCB redesign. Electrical compatibility is ensured by TTL-level inputs and LSTTL-output drive capability.

What is the purpose of the Schmitt-trigger action on the clock input?

The Schmitt-trigger on the CP input provides hysteresis (typically 0.5 V threshold difference), allowing reliable edge detection even with slow-rising or electrically noisy clock signals common in automotive environments. This prevents multiple triggering from ringing or EMI-induced glitches, ensuring one state transition per intended clock edge.

Can both flip-flop sections operate with different clock sources?

Yes-each section has independent CP, SD, RD, D, Q, and Q pins. This allows simultaneous operation with separate clock domains (e.g., one section synchronized to CAN bus timing, another to PWM generator output), provided supply and ground connections are shared and layout minimizes crosstalk between clock traces.

Does the exposed thermal pad on the TSSOP14 package require soldering?

No-the exposed pad in SOT402-1 is not electrically connected and has no mandatory solder requirement. If soldered per IPC guidelines, it must remain floating or be tied to GND; it serves only as a mechanical anchor and thermal relief path, not as a functional terminal.