FEATURE

• Industrial temperature range available (–40°C to +85°C)

DESCRIPTION

The 74F74 is a dual positive edge-triggered D-type flip-flop featuring

individual data, clock, set, and reset inputs; also true and

complementary outputs. Set (SD) and reset (RD) are asynchronous

active low inputs and operate independently of the clock input. When

set and reset are inactive (high), data at the D input is transferred to

the Q and Q outputs on the low-to-high transition of the clock. Data

must be stable just one setup time prior to the low-to-high transition of

the clock for predictable operation. Clock triggering occurs at a

voltage level and is not directly related to the transition time of the

positive-going pulse. Following the hold time interval, data at the D

input may be changed without affecting the levels of the output.

N74F74D属于集成电路（IC） > 触发器。安世半导体(中国)有限公司制造生产的N74F74D触发器触发器是能够存储单个逻辑状态或信息“位”的基本数字存储器件。这些器件至少有两个输入；一个或多个用于传递要存储的数据，另一个用于指示存储该数据的时间点。不同的触发器类型，例如 D（延迟）、SR（置位复位）和 JK，对提供给其输入的信号有不同的响应，可用于实现不同的逻辑功能。这些器件与锁存器的不同之处在于它们是边缘敏感器件，其保持的逻辑状态仅在接收到有效时钟信号时才会改变。