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LM2903: 推荐高速运放型号

Part Number: LM2903

1. 目前输入一个方波信号,上升沿5ns,下降沿5ns,脉宽20ns-50ns,5V高电平,想通过告诉运放输出10V的方波信号,尽量不要改变方波的上升下降沿和脉宽,请问有什么型号推荐吗?

2. 一个连续的PWM脉冲,有什么类型的逻辑芯片,可以只触发输出第一个脉冲吗?

谢谢,请赐教