SN74AHC273DBR集成电路（IC）的触发器规格书PDF中文资料

SN74AHC273DBR属于集成电路（IC）的触发器。由德州仪器制造生产的SN74AHC273DBR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。

1 Features

• Operating range 2V to 5.5V VCC

• Contain eight flip-flops with single-rail outputs

• Direct clear input

• Individual data input to each flip-flop

• Latch-up performance exceeds 250mA per JESD

17

• ESD protection exceeds JESD 22

– 2000V human-body model (A114-A)

– 1000V charged-device model (C101)

• On products compliant to MIL-PRF-38535,

All parameters are tested unless otherwise noted.

On all other products, production processing does

not necessarily include testing of all parameters.

2 Applications

• Buffers and Storage Registers

• Shift Registers

• Pattern Generators

• Servers

• PCs and Notebooks

• Network Switches

• Memory Systems

• Databases

3 Description

These devices are positive-edge-triggered D-type

flip-flops with a direct clear ( CLR) input.

Information at the data (D) inputs meeting the setup

time requirements is transferred to the Q outputs on

the positive-going edge of the clock (CLK) pulse.

Clock triggering occurs at a particular voltage level

and is not directly related to the transition time of the

positive-going pulse. When CLK is at either the high

or low level, the D input has no effect at the output.