具有三态输出的高速 CMOS 逻辑同向八路总线收发器
The CD54HC245, CD54HCT245, and , CD74HCT245 are high-speed octal three-state bidirectional transceivers intended for two-way asynchronous communication between data buses. They have high drive current outputs which enable high-speed operation while driving large bus capacitances. They provide the low power consumption of standard CMOS circuits with speeds and drive capabilities comparable to that of LSTTL circuits.
The CD54HC245, CD54HCT245, CD74HC245 and CD74HCT245 allow data transmission of the B bus or from the B bus to the A bus. The logic level at the direction input DIR determines the direction. The output enable input OE\\, when high, puts the I/O ports in the high-impedance state.
The HC/HCT245 is similar in operation to the HC/HCT640 and the HC/HCT643.
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
CD74HC245 TI 德州仪器 | 当前型号 | 当前型号 |
SN74HC245N 德州仪器 | 功能相似 | CD74HC245和SN74HC245N的区别 |
74HC245N,652 恩智浦 | 功能相似 | CD74HC245和74HC245N,652的区别 |
M74HC245B1R 意法半导体 | 功能相似 | CD74HC245和M74HC245B1R的区别 |