CD74HC109中文资料具有设置和复位端的高速 CMOS 逻辑双路正边沿触发式 J-K 触发器数据手册TI规格书

描述 Description

The ’HC109 and ’HCT109 are dual J-K\\ flip-flops with set and reset. The flip-flop changes state with the positive transition of Clock (1CP and 2CP).

The flip-flop is set and reset by active-low S\\ and R\\, respectively. A low on both the set and reset inputs simultaneously will force both Q and Q\\ outputs high. However, both set and reset going high simultaneously results in an unpredictable output condition.

特性 Features

• Asynchronous Set and Reset
• Typical fMAX = 54MHz at VCC = 5V, CL = 15pF, A = 25°C
• Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
• Wide Operating Temperature Range . . . -55°C to 125°C
• Significant Power Reduction Compared to LSTTL Logic ICs
• 2V to 6V Operation
• HCT Types
• Direct LSTTL Input Logic Compatibility, VIL = 0.8V (Max), VIH = 2V (Min)
• CMOS Input Compatibility, Il 1µA at VOL, VOH

简介

CD74HC109属于集成电路（IC）的触发器。由TI制造生产的CD74HC109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。