SN74LS174NSR集成电路（IC）的触发器规格书PDF中文资料

SN74LS174NSR属于集成电路（IC）的触发器。由美国德州仪器公司制造生产的SN74LS174NSR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。

“174, 'LS174, ‘S174 Contain Six Flip-Flops

with Single-Rail Outputs

‘175, 'L.S175, ‘S175 Contain Four Flip-Flops

with Double-Rail Outputs

Three Performance Ranges Offered: See

Table Lower Right

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 flip-flops

utilize TTL circuitry to implement D-type flip-flop logic.

All have a direct clear input, and the ‘175, ‘LS175, and

$175 feature complementary outputs from each flip-

flop.

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 at the output.

These circuits are fully compatible for use with most

TTL circuits.