SN74LS273DW屬于集成電路（IC）的觸發(fā)器。由美國德州儀器公司制造生產(chǎn)的SN74LS273DW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（置位復位）和 JK，對提供給其輸入的信號有不同的響應，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。

? Contains Eight Flip-Flops With Single-Rail

Outputs

? Buffered Clock and Direct Clear Inputs

? Individual Data Input to Each Flip-Flop

? Applications Include:

Buffer/Storage Registers

Shift Registers

Pattern Generators

description

These monolithic, positive-edge-triggered flipflops

utilize TTL circuitry to implement D-type

flip-flop logic with a direct clear input.

Information at the D inputs meeting the setup time

requirements is transferred to the Q outputs on the

positive-going edge of the clock pulse. Clock

triggering occurs at a particular voltage level and

is not directly related to the transition time of the

positive-going pulse. When the clock input is at

either the high or low level, the D input signal has

no effect ar the output.

These flip-flops are guaranteed to respond to

clock frequencies ranging form 0 to 30 megahertz

while maximum clock frequency is typically 40

megahertz. Typical power dissipation is 39

milliwatts per flip-flop for the 4273 and 10 milliwatts

for the 4LS273.