Nexperia USA Inc. 74AHCT1G79GV-Q100H

Overview

74AHCT1G79GV-Q100 from Nexperia is a single positive-edge-triggered D-type flip-flop in SC-74A (SOT753) package, operating from 4.5 V to 5.5 V supply, with TTL-compatible inputs, 8 ns typical propagation delay at 5 V/50 pF, and AEC-Q100 Grade 1 qualification for automotive body control modules requiring precise edge-triggered data latching.

For engineers reviewing the 74AHCT1G79GV-Q100 datasheet, 74AHCT1G79GV-Q100 pinout, 74AHCT1G79GV-Q100 application, or 74AHCT1G79GV-Q100 equivalent, key selection criteria include input logic level compatibility (TTL), -40 °C to +125 °C operation, overvoltage-tolerant inputs up to 5.5 V, and low-power CMOS output drive capability in a 5-pin surface-mount package.

Technical Context

This device implements a synchronous edge-triggered storage element where data at the D-input is captured on the LOW-to-HIGH transition of CP and appears at Q after t_pd ≤ 11.0 ns (max, -40 °C to +125 °C, 50 pF load). It features symmetrical output impedance and balanced propagation delays between rising and falling edges.

Input levels conform to TTL thresholds (V_IL ≤ 0.8 V, V_IH ≥ 2.0 V at V_CC = 4.5–5.5 V), while outputs drive CMOS loads with VOH ≥ 3.70 V and VOL ≤ 0.55 V at 8 mA sink/source, enabling direct interfacing with 5 V logic families in mixed-voltage automotive subsystems.

Key Specifications

Pinout & Package

SC-74A (SOT753) plastic surface-mounted package: 5-terminal, 1.1 mm × 0.9 mm × 0.95 mm body, leadless side-wettable flanks not applicable; thermal resistance θ_JA = 263 K/W (typical), P_tot derates linearly at 3.8 mW/K above 85 °C.

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 GW variant offers superior thermal dissipation in airflow-limited zones, while the GZ variant delivers minimal PCB area usage and enhanced manufacturability - choice depends on thermal budget, board thickness, and assembly inspection requirements.

Availability

74AHCT1G79GV-Q100 is available at Aetrix Electronics and suitable for automotive body electronics, powertrain signal conditioning, and infotainment peripheral interfacing requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74AHCT1G79GV-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 logic, discrete, and MOSFET solutions with focus on automotive, industrial, and mobile applications.

This device belongs to the AHCT logic family designed specifically for TTL-to-CMOS interfacing in 5 V automotive systems, emphasizing robustness, low power, and AEC-Q100 compliance.

FAQ

Is 74AHCT1G79GV-Q100 compatible with 3.3 V microcontroller GPIOs?

No - its TTL input thresholds require V_IH ≥ 2.0 V and V_IL ≤ 0.8 V, but it operates only from 4.5 V to 5.5 V supply. Driving D or CP from a 3.3 V MCU violates recommended operating conditions and risks unreliable switching or increased ICC. Use level-shifting circuitry or select an AHC variant if 3.3 V operation is required.

What is the maximum clock frequency supported across temperature?

The device supports up to 70 MHz maximum clock frequency at full -40 °C to +125 °C range, verified by t_W (minimum pulse width) ≥ 4.0 ns and t_pd ≤ 11.0 ns. At 25 °C, f_max reaches 90 MHz, but design margin must account for worst-case propagation and setup/hold timing across voltage and temperature extremes.

Does this flip-flop have asynchronous reset or preset?

No - the 74AHCT1G79GV-Q100 implements only synchronous D-type functionality with no asynchronous control inputs. Its function table confirms Q+1 depends solely on D and CP edge; no R or S pins are defined in pin description or logic diagram. For reset capability, consider 74AHCT1G80 or 74AHCT1G82 variants.

Can the output drive a 50 pF capacitive load continuously?

Yes - the datasheet specifies dynamic characteristics (t_pd, t_su, t_h) explicitly at C_L = 50 pF, and output drive strength (±8 mA) exceeds the current needed to charge/discharge that load within specified timing windows. However, sustained high-frequency toggling at 50 pF increases dynamic power and requires attention to P_tot derating above 85 °C.