芯片手册：

HD74ALVCH16821 - 3.3-V 20-bit Bus Interface Flip Flops with 3-state Outputs

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HD74ALVCH16821 管脚封装图

HD74ALVCH16821管脚封装图

HD74ALVCH16821 芯片功能简介

HD74ALVCH168213.3-V 20-bit Bus Interface Flip Flops with 3-state OutputsADE-205-171B (Z)3rd. EditionDecember 1999DescriptionThe HD74ALVCH16821 can be used as two 10-bit flip flops or one 20-bit flip flop. The 20 flip flops areedge triggered D-type flip flops. On the positive transition of the clock (CLK) input, the device providestrue data a [查看详情]

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