Nexperia USA Inc. 74AHC1G79GV,125

Overview

74AHC1G79GV,125 from Nexperia is a single positive-edge-triggered D-type flip-flop in SC-74A (SOT753) package, operating from 2.0 V to 5.5 V supply, with CMOS-level inputs, 8.4 ns typical propagation delay at 3.3 V/15 pF, and guaranteed operation from –40 °C to +125 °C. It functions as a synchronous data latch in clock-domain synchronization, signal edge alignment, and metastability mitigation circuits.

For engineers reviewing the 74AHC1G79GV,125 datasheet, 74AHC1G79GV,125 pinout, 74AHC1G79GV,125 application, or 74AHC1G79GV,125 equivalent, this device is selected for low-voltage logic interfacing, high-noise-immunity control path sequencing, and mixed-voltage translation where overvoltage-tolerant 5.5 V inputs are required with minimal board space.

Technical Context

This flip-flop implements a master-slave D-latch architecture synchronized to the LOW-to-HIGH transition of the CP input. Its input stage accepts CMOS-level signals and tolerates up to 5.5 V regardless of VCC, enabling safe level-shifting between 1.8 V, 3.3 V, and 5 V domains without external circuitry.

Propagation delay (tpd), set-up time (tsu = 3.0 ns min), and hold time (th = +2.0 ns min) are fully characterized across –40 °C to +125 °C and VCC = 2.0–5.5 V. Output drive strength is symmetrical (VOH ≥ 2.58 V @ 4 mA, VOL ≤ 0.36 V @ 8 mA at VCC = 3.0 V), supporting direct fan-out to multiple AHC/AHCT loads.

Key Specifications

Pinout & Package

SC-74A (SOT753) plastic surface-mounted package: 5-terminal, 1.7 mm × 1.3 mm body, 0.65 mm pitch, 0.26 mm thickness, no exposed pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74AHCT1G79GV and SN74LVC1G79DBVR, the 74AHC1G79GV uniquely combines wide VCC flexibility, 5.5 V input tolerance, and industrial temperature support - making it optimal for mixed-voltage, high-reliability embedded control where input voltage uncertainty exists.

Availability

74AHC1G79GV,125 is available at Aetrix Electronics and suitable for industrial sensor interface, automotive body control, IoT power sequencing, and PLC I/O isolation requiring stable component supply across extended temperature and mixed-voltage conditions.

Supply support for 74AHC1G79GV,125 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 logic, discrete, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in industrial, automotive, and consumer applications.

The 74AHC series targets low-power, high-speed CMOS logic design with robust noise immunity and wide supply range - specifically engineered for voltage translation, clock domain bridging, and signal conditioning in space-constrained embedded systems.

FAQ

Can 74AHC1G79GV,125 operate with a 1.8 V supply?

No. The absolute minimum supply voltage is 2.0 V per Table 6. At 1.8 V, VIH and VOH specifications fall outside guaranteed limits, and propagation delay increases unpredictably. For 1.8 V systems, consider SN74LVC1G79 or 74LVC1G79 variants with 1.65 V minimum VCC.

Is the Q̅ (complement output) available on this device?

No. The 74AHC1G79GV,125 provides only the true Q output. It does not include an inverted output terminal. If complementary outputs are required, use dual-output variants such as 74AHC74 or implement external inversion with a 74AHC1G04.

What is the maximum clock frequency supported at 125 °C?

Per Table 8, fmax is 70 MHz at –40 °C to +125 °C ambient. This is validated with CL = 15 pF load and VCC = 4.5–5.5 V. At 3.3 V and 125 °C, timing margins reduce - derate to ≤55 MHz for robust operation with 2 ns setup/hold margin.

Does this device require external pull-up or pull-down resistors on unused inputs?

No. Unused inputs (D or CP) must be tied to VCC or GND - floating inputs are prohibited due to CMOS gate susceptibility to noise-induced oscillation and increased ICC. Internal protection diodes do not replace proper DC biasing.