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

M74HC74屬于集成電路（IC） > 觸發(fā)器。意法半導(dǎo)體（ST）集團制造生產(chǎn)的M74HC74觸發(fā)器觸發(fā)器是能夠存儲單個邏輯狀態(tài)或信息“位”的基本數(shù)字存儲器件。這些器件至少有兩個輸入；一個或多個用于傳遞要存儲的數(shù)據(jù)，另一個用于指示存儲該數(shù)據(jù)的時間點。不同的觸發(fā)器類型，例如 D（延遲）、SR（置位復(fù)位）和 JK，對提供給其輸入的信號有不同的響應(yīng)，可用于實現(xiàn)不同的邏輯功能。這些器件與鎖存器的不同之處在于它們是邊緣敏感器件，其保持的邏輯狀態(tài)僅在接收到有效時鐘信號時才會改變。