DM74LS193CW 查看數據表（PDF） - Fairchild Semiconductor

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DM74LS193CW

Synchronous 4-Bit Binary Counter with Dual Clock

Fairchild Semiconductor 

Timing Diagram

Note A: Clear overrides load, data, and count inputs

Note B: When counting up, count-down input must be HIGH; when counting down, count-up input must be HIGH.

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