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54ACT399DMQB 数据手册 ( 数据表 )

零件编号产品描述 (功能)生产厂家
54ACT399DMQB Quad 2-Port Register National-Semiconductor
National ->Texas Instruments National-Semiconductor
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General Description
The ACT399 is the logical equivalent of a quad 2-input multiplexer feeding into four edge-triggered flip-flops. A common Select input determines which of the two 4-bit words is accepted. The selected data enters the flip-flops on the rising edge of the clock. The ACT399 is the 16-pin version of the ACT398, with only the Q outputs of the flip-flops available.

Features
- Icc reduced by 50%
- Select inputs from two data sources
- Fully positive edge-triggered operation
- Outputs source/sink 24 mA
- ACT/ACT399 has TTL-compatible inputs

 

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