Quad 2-Port Register
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General Description
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The AC/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-flop on the rising edge of the clock.
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Features
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ICC reduced by 50%
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Select inputs from two data sources
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Fully positive edge-triggered operation
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Outputs source/sink 24 mA
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AC/ACT399 has TTL-compatible inputs
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Datasheet
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Product Status/Pricing/Packaging
| 74ACT399MTCX | Full Production | RoHS Compliant | $0.245 | TSSOP | 16 | TAPE REEL
| | Line 1: $Y (Fairchild logo)
&Z (Asm. Plant Code)
&2 (2-Digit Date Code)
&K
Line 2: ACT399
| | 74ACT399PC | Full Production | RoHS Compliant | $0.97 | DIP | 16 | RAIL
| | Line 1: $Y (Fairchild logo)
&Z (Asm. Plant Code)
&4 (4-Digit Date Code)
&K
Line 2: 74ACT399PC
| | 74ACT399SC | Full Production | RoHS Compliant | $0.245 | SOIC | 16 | RAIL
| | Line 1: $Y (Fairchild logo)
&Z (Asm. Plant Code)
&2 (2-Digit Date Code)
&K
Line 2: 74ACT399
| | 74ACT399SCX | Full Production | RoHS Compliant | $0.473 | SOIC | 16 | TAPE REEL
| | Line 1: $Y (Fairchild logo)
&Z (Asm. Plant Code)
&2 (2-Digit Date Code)
&K
Line 2: 74ACT399
| | 74ACT399SJX | Full Production | RoHS Compliant | $1.24 | SOP | 16 | TAPE REEL
| | Line 1: $Y (Fairchild logo)
&Z (Asm. Plant Code)
&2 (2-Digit Date Code)
&K
Line 2: 74ACT399
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* Fairchild 1,000 piece Budgetary Pricing
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| ** A sample button will appear if the part is available through Fairchild's on-line samples program. If there is no sample button, please contact a Fairchild distributor to obtain samples |
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Qualification Support
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Eco Status