Nexperia USA Inc. 74AHC1G79GV-Q100H

Overview

74AHC1G79GV-Q100 from Nexperia is a single positive-edge-triggered D-type flip-flop in SC-74A (SOT753) package, rated for automotive Grade 1 (-40 °C to +125 °C), with 2.0–5.5 V supply range, overvoltage-tolerant inputs up to 5.5 V, and CMOS input logic levels. It stores data on the LOW-to-HIGH clock transition and delivers deterministic Q output for synchronous control in engine control units and ADAS sensor interfaces.

For engineers reviewing the 74AHC1G79GV-Q100 datasheet, 74AHC1G79GV-Q100 pinout, 74AHC1G79GV-Q100 application, or 74AHC1G79GV-Q100 equivalent, key selection criteria include edge-trigger timing margin (tsu = 3.0 ns min), propagation delay (tpd = 3.5–11.5 ns), AEC-Q100 qualification, input voltage compatibility across mixed-rail systems, and SC-74A thermal derating behavior above 85 °C.

Technical Context

This device implements a basic synchronous storage element with strict setup/hold timing relative to the rising edge of CP. Its CMOS input stage enables direct interfacing with 3.3 V or 5 V logic families while maintaining immunity to transient overvoltage up to 5.5 V on D and CP pins.

The flip-flop operates with symmetrical output drive strength (VOH/VOL specified at ±4 mA and ±8 mA), balanced propagation delays (tPLH ≈ tPHL), and low static current (ICC ≤ 40 μA at VCC = 5.5 V), making it suitable for low-power, noise-sensitive automotive signal conditioning paths.

Key Specifications

Pinout & Package

SC-74A (SOT753) plastic surface-mounted package: 5-terminal, 1.1 × 0.9 mm body, 0.65 mm lead pitch, 0.26 mm thickness, optimized for high-density PCB layouts and automated assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74AHCT1G79GV-Q100, the 74AHC1G79GV-Q100 provides tighter noise immunity in mixed-voltage domains via CMOS thresholds, while SN74LVC1G79DBVR offers cost advantage in non-automotive contexts but lacks full Grade 1 thermal and reliability validation.

Availability

74AHC1G79GV-Q100 is available at Aetrix Electronics and suitable for engine control units, ADAS camera interfaces, body control modules, and infotainment GPIO expansion requiring stable component supply across extended automotive temperature ranges.

Supply support for 74AHC1G79GV-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 delivering high-performance, reliable logic, analog, and MOSFET solutions optimized for automotive, industrial, and mobile applications.

The 74AHC1G79-Q100 belongs to Nexperia's AEC-Q100-qualified automotive logic family, designed specifically for robust, low-power synchronous data capture in safety-critical vehicle subsystems.

FAQ

What is the maximum clock frequency supported by the 74AHC1G79GV-Q100?

The device supports up to 90 MHz typical maximum frequency at 25 °C and VCC = 5.0 V, dropping to 70 MHz at full operating range (-40 °C to +125 °C). This is determined by propagation delay (tpd ≤ 11.5 ns) and minimum pulse width (tW ≥ 4.0 ns), verified per Table 8 in the official Nexperia datasheet Rev. 6.

Does the 74AHC1G79GV-Q100 require external pull-up or pull-down resistors on its inputs?

No external biasing is required: the D and CP inputs have defined CMOS thresholds and negligible leakage (II ≤ 2.0 μA), and the flip-flop functions correctly with driven HIGH/LOW signals. Pull resistors are only needed if the input may float during power-up or system reset - not inherent to the device's operation.

Can the 74AHC1G79GV-Q100 interface directly with a 5 V microcontroller while powered from 3.3 V?

Yes - its overvoltage-tolerant inputs accept up to 5.5 V regardless of VCC, so D and CP can be driven by 5 V logic while VCC = 3.3 V. However, Q output swing will be limited to 0–3.3 V, requiring level translation if driving another 5 V device.

How does thermal derating affect power dissipation in the SC-74A package?

For the SOT753 (SC-74A) package, total power dissipation (Ptot) derates linearly at 3.8 mW/K above +85 °C ambient. At +125 °C, usable Ptot drops to ~100 mW from the 250 mW rating at +25 °C - a critical constraint for high-frequency operation in under-hood locations.