# 74AC74 Dual D-Type Flip Flop

## Overview
️· High-speed CMOS dual D-type flip-flop with preset and clear.
️· Operating voltage: 2V to 6V
️· Maximum clock frequency: up to 300 MHz (typical at 5V)
️· Low power dissipation: 4µA (max) at 25°C.
️· 50Ω transmission line driving capability
️· Available in Plastic DIP and SOIC packages

## Features
️· High speed operation
️· Low power consumption
️· High noise immunity
️· Improved latch-up immunity
️· ESD protection (2kV)
️· Symmetrical output impedance

## Pin Description
️· 1CLR, 2CLR: Asynchronous Reset (active low)

️· 1D, 2D: Data Inputs
️· 1CK, 2CK: Clock Inputs (positive edge-triggered)
️· 1PR, 2PR: Asynchronous Set (active low)
️· 1Q, 2Q: True Flip-Flop Outputs
️· 1Q, 2Q: Complement Flip-Flop Outputs
️· GND: Ground
️· VCC: Positive Supply Voltage

## Electrical Characteristics
️· Operating Temperature: -40°C to +85°C
️· Input Voltage (VIH): 2.1V (at VCC = 3.0V), 3.15V (at VCC = 4.5V), 3.85V (at VCC = 5.5V)
️· Output Voltage (VOH): ~ 2.9-5.4V (dependent on VCC and load)
️· Propagation Delay (tPLH/tPHL): ~ 3-7 ns (dependent on VCC)
️· Maximum Clock Frequency (fMAX): Up to 300 MHz

## Package Options
️· Plastic DIP (order code: 74AC74B)
️· SOIC (order code: 74AC74M)