74HC245 Octal Bus Transceiver with 3-State Outputs
●概述
■74HC245是一款具有3态输出的8位总线收发器。电源电压可以接受2.0V至5.5V的任何电压。An和Bn是8位数据输入输出端口。DIR是方向控制输入,OE是输出启用输入。
■当DIR设置为高时,它允许从An传输到Bn。当DIR设为低时,它允许将Bn传输到An。OE可用于禁用输出,从而有效地隔离总线。输入的钳位二极管允许使用限流电阻器将输入连接到超过电源电压的电压。
●特点
■宽工作电压范围:2.0V至5.5V
■+7.8mA/7.8mA输出电流
■CMOS低功耗
■高抗噪性
■带双向转换的八总线接口
■3态非反相输出
■-40℃至+125℃工作温度范围
■提供绿色SOIC-20和TSSOP-20封装
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