Description

The M54HCxxx and M54HCTxxx series are composed of over 90 types of high speed CMOS functions specifically designed to meet the radiation requirements of the aerospace industry. It includes a large set of gates, Flip-Flops, Multiplexers, Counters, Bus interface and several other functions. The radiation hardness, the single event latch-up (SEL) immunity and the housing in hermetic packages of all types of both series make them ideally suited for use in the most difficult environmental conditions.

Features

■ 2 to 6 V operating voltage

■ Low power DC dissipation: 1 µA max at 25°C

■ High speed tPD = 8 ns typ at 25°C

■ Symmetrical outputs characteristics

■ High noise immunity: 28 of min VCC

■ Hermetic packages

■ Rad-hard 50 krad (Si)

■ SEL immune up to 110 MeV/mg/cm²

■ ESCC qualified

■ Same die and electrical specification for engineering and flight models

■ The complete specification of each type is available from the ESCC web site: https://escies.org using its ESCC part number.

ST guarantees full compliance of qualified parts with these ESCC specifications

M74HCT74B1R属于集成电路（IC） > 触发器。意法半导体（ST）集团制造生产的M74HCT74B1R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。