74F399 Quad 2-port Register

The 74F399 is the logical equivalent of a quad 2-input multiplexer feeding into four edge-triggered Flip-Flops A common Select input determines which of two 4-bit words is accepted. The selected data enters the Flip-Flops on the rising edge of the Clock The 74F399 is a high speed quad 2-port Register They select 4 bits of data from either of two sources (Ports) under control of a common select input (S). The selected data is transferred to a 4-bit output Register synchronous with the Low-to-High transition of the Clock input (CP). The 4-bit D-type output Register is fully edge-triggered. The Data inputs (I0n, I1n) and Select input (S) must be stable only a setup time prior to and hold time after the Low-to-High transition of the Clock input for predictable operation.
By NXP Semiconductors
Part Manufacturer Description Datasheet Samples
74F399PCQR Rochester Electronics LLC D Flip-Flop, F/FAST Series, 1-Func, Positive Edge Triggered, 4-Bit, True Output, TTL, PDIP16, PLASTIC, DIP-16
74F399DC Rochester Electronics LLC D Flip-Flop, F/FAST Series, 1-Func, Positive Edge Triggered, 4-Bit, True Output, TTL, CDIP16, CERAMIC, DIP-16
N74F399N Rochester Electronics LLC D Flip-Flop, F/FAST Series, 1-Func, Positive Edge Triggered, 4-Bit, True Output, TTL, PDIP16, 0.300 INCH, PLASTIC, DIP-16
MC74F399JD Rochester Electronics LLC D Flip-Flop
MC74F399DWR2 Rochester Electronics LLC D Flip-Flop
N74F399D Rochester Electronics LLC D Flip-Flop, F/FAST Series, 1-Func, Positive Edge Triggered, 4-Bit, True Output, TTL, PDSO16, PLASTIC, SO-16
MC74F399JDS Rochester Electronics LLC D Flip-Flop
MC74F399J Rochester Electronics LLC D Flip-Flop
N74F399D-T Rochester Electronics LLC D Flip-Flop, F/FAST Series, 1-Func, Positive Edge Triggered, 4-Bit, True Output, TTL, PDSO16, SOP-16
MC74F399DR2 Rochester Electronics LLC Register
74F399 's Packages74F399 's pdf datasheet
N74F399D
N74F399N




74F399 Pinout, Pinouts
74F399 pinout,Pin out
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