74F74 Dual D-type flip-flop Product Specification

Category: Electronics, Logic ICS, NXP

Overview

The 74F74 is a dual D-type flip-flop integrated circuit, primarily used in electronic systems for storage and transfer of digital data. It is a positive edge-triggered device with individual data, clock, set, and reset inputs along with both true and complementary outputs. The input data is transferred to the outputs on the rising edge of the clock signal.

Features and Benefits

The product is designed to operate within an industrial temperature range of -40°C to +85°C, making it suitable for a wide range of applications. It provides advantages such as asynchronous control inputs and the ability to change the data input after a certain hold time without affecting the output levels.

Performance Characteristics

With a typical maximum clock frequency of 125 MHz and a typical supply current of 11.5 mA, the device is designed for high-speed operation. The 74F74’s performance is reliable and efficient in terms of speed and power consumption.

Ordering Information and Packaging

The 74F74 dual D-type flip-flop can be ordered in commercial and industrial range temperature grades, with a supply voltage of 5V ±10%. It is available in two package types: a 14-pin plastic DIP (SOT27-1) and a 14-pin plastic SO (SOT108-1).

Pin Configuration and Logic Symbol

The pin configuration includes standard D-type flip-flop pins such as data (DO, D1), clock (CPO, CP1), set (SDO, SD1), reset (RDO, RDI), and data outputs (Q0, Q1, W0, Q1). The Ground (GND) is assigned to pin 14. The logic symbol is presented in both IEC and IEEE formats, ensuring clarity and ease of design integration.

Input and Output Characteristics

Data inputs, clock inputs, set inputs, and reset inputs have specified loading values, with the typical load for a high state being 20µA and for a low state, 0.6 mA. Data outputs can drive 50 units when high and 33 units when low, indicating robust output capability.

Functional Description

The 74F74 flip-flop operates with the data held stable just before the rising edge of the clock to ensure predictable output. The set and reset inputs are asynchronously active low, meaning they can alter the state of the flip-flop regardless of the clock signal, providing flexibility in control.