芯云购商城
搜索关键词不能为空
搜索关键词不能为空
收缩

QQ在线咨询

电话咨询

  • 0755-82579613

Skype 咨询

  • 3003361628@qq.com

SN74HCT374DWR_TI(德州仪器)中文资料_英文资料_价格_PDF手册

2024/5/8 16:56:57

358

SN74HCT374DWR

具有三态输出的八路边沿触发式 D 型触发器

 

 

                                更多技术详情请登录www.mroic.cn            


 

1 Features

 

• Operating voltage range of 4.5 V to 5.5 V

• High-current 3-state true outputs can drive up to 15 LSTTL loads

• Low power consumption, 80-μA max ICC

• Typical tpd = 22 ns

• ±6-mA output drive at 5 V

• Low input current of 1 μA max

• Inputs are TTL-voltage compatible

• Eight D-type flip-flops in a single package

• Full parallel access for loading

 

 

                                     

 

 

2 Description

 

These 8-bit flip-flops feature 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. They are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.

 

The eight flip-flops of the ’HCT374 devices are edgetriggered D-type flip-flops. On the positive transition ofthe clock (CLK) input, the Q outputs are set to the logic levels that were set up at the data (D) inputs.

 

An output-enable (OE) input places the eight outputs in either a normal logic state (high or low logic levels) or the high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The high-impedance state and increased drive provide the capability to drive bus lines without interface or pullup components.