The 74AC74 is a high-performance CMOS dual D-type flip-flop with preset and clear functions. The device is fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology, which makes it faster and more power-efficient. When the clock pulse makes a positive transition, the D input signal is transferred to the Q and Q outputs. Preset and clear are independent of the clock and are achieved by setting a low level on the appropriate input. All inputs and outputs are equipped with static discharge protection circuits, which provide 2KV ESD immunity and transient excess voltage protection.
The 74AC74 is a high‑speed CMOS dual D‑type flip‑flop featuring preset and clear inputs, low power dissipation, and high noise immunity. It is pin‑compatible with the 74 series and includes protection against static discharge (2 kV ESD immunity).
The document lists absolute maximum ratings, recommended operating conditions, DC and AC electrical characteristics, package options (DIP, SOP, TSSOP), test circuits, waveform examples, and mechanical data for the TSSOP14 package.
| Operating Voltage Range | 2 V to 6 V |
|---|---|
| Maximum Clock Frequency | 300 MHz (typ.) at 5 V |
| ESD Immunity | 2 kV |
| Input Capacitance | 5 pF |
| Power Dissipation | 5 mW |
| Maximum Output Current | 50 mA |
The device operates from 2 V to 6 V.
Typical maximum clock frequency is 300 MHz at a 5 V supply.
All inputs and outputs have 2 kV ESD immunity.