Nexperia USA Inc. 74AHC1G79GW-Q100H

Overview

74AHC1G79GW-Q100 from Nexperia is a single positive-edge-triggered D-type flip-flop in TSSOP5 (SOT353-1) package, qualified to AEC-Q100 Grade 1 for automotive use. It operates from 2.0 V to 5.5 V, features overvoltage-tolerant inputs up to 5.5 V, and delivers 8.4 ns typical propagation delay (VCC = 3.3 V, CL = 15 pF). It functions as a synchronous data latch in clock-domain synchronization and signal edge alignment circuits.

For engineers reviewing the 74AHC1G79GW-Q100 datasheet, 74AHC1G79GW-Q100 pinout, 74AHC1G79GW-Q100 application, or 74AHC1G79GW-Q100 equivalent, key selection criteria include automotive temperature range (-40 °C to +125 °C), CMOS-level input compatibility, 5-pin TSSOP layout, and set-up/hold timing compliance at 3.0 ns / +2.0 ns.

Technical Context

This device implements a basic synchronous edge-triggered storage element with non-inverting Q output and no reset/set control. Its logic diagram confirms transparent data sampling only on LOW-to-HIGH clock transitions, with internal transmission gates and cross-coupled inverters forming the master–slave latch structure.

Input tolerance to 5.5 V enables level translation between 3.3 V logic domains and 5 V peripherals without external circuitry. The absence of asynchronous controls and fixed positive-edge triggering define its role strictly as a clock-synchronized data register-not a state machine building block or configurable sequencer.

Key Specifications

Pinout & Package

TSSOP5 (SOT353-1) package: plastic thin shrink small outline, 5-lead, 1.25 mm body width, 0.65 mm lead pitch, exposed pad not present.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74AHCT1G79GW-Q100, this part provides superior noise immunity in CMOS environments due to higher VIH, while SN74LVC1G79DBVR extends low-voltage operation but lacks guaranteed automotive qualification out-of-box.

Availability

74AHC1G79GW-Q100 is available at Aetrix Electronics and suitable for automotive engine control units, ADAS camera interfaces, infotainment display subsystems, and body control modules requiring stable component supply across extended temperature ranges.

Supply support for 74AHC1G79GW-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 specializing in high-performance, high-reliability logic, analog, and discrete components, with leadership in automotive-qualified devices.

This part belongs to Nexperia's AHC-series automotive logic family, designed specifically for robust, low-power, mixed-voltage data synchronization in harsh automotive environments.

FAQ

What is the maximum clock frequency supported by 74AHC1G79GW-Q100?

The device supports up to 90 MHz at 25 °C and 70 MHz across the full -40 °C to +125 °C automotive temperature range, based on measured propagation delay (tpd ≤ 11.5 ns) and minimum clock pulse width (tW ≥ 4.0 ns) specifications.

Can 74AHC1G79GW-Q100 interface directly with 5 V logic while powered at 3.3 V?

Yes - its inputs are overvoltage tolerant to 5.5 V regardless of VCC level, allowing direct connection to 5 V outputs without level shifters or resistive dividers when VCC = 3.3 V.

Does this flip-flop include asynchronous reset or set functionality?

No - the 74AHC1G79GW-Q100 implements only synchronous D-type behavior with positive-edge clocking; it has no asynchronous control inputs (e.g., CLR, PRE) and cannot be forced to a known state outside the clock edge.

Is thermal derating required for continuous operation at +125 °C ambient?

Yes - for the TSSOP5 (SOT353-1) package, total power dissipation must be linearly derated by 3.3 mW/K above +74 °C ambient, limiting usable power to approximately 150 mW at +125 °C per datasheet Section 8.