SN74LS76A集成电路（IC）的触发器规格书PDF中文资料

SN74LS76A属于集成电路（IC）的触发器。由德州仪器制造生产的SN74LS76A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。

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description

The ‘76 contains two independent J-K flip-flops

with individual J-K, clock, preset, and clear

inputs. The ‘76 is a positive-edge-triggered flip-

flop. J-K input is loaded into the master while the

clock is high and transferred to the slave on the

high-to-low transition. For these devices the J

and K inputs must be stable while the clock is

high.

The ‘LS76A contain two independent negative-

edge-triggered flip-flops. The J and K inputs

must be stable one setup time prior to the high-

to-low clock transition for predicatble operation.

The preset and clear are asynchronous active

low inputs. When low they override the clock

and data inputs forcing the outputs to the steady

state levels as shown in the function table.

The SN5476 and the SN54LS76A are

characterized for operation over the full military

temperature range of —55°C to 125°C. The

SN7476 and the SN74LS76A are characterized

for operation from 0°C to 70°C.