Datasheet 74F399PC Equivalent ( PDF ) - Register

74F398 74F399 Quad 2-Port Register April 1988 Revised August 1999 74F398 74F399 Quad 2-Port Register General Description The 74F398 and 74F399 are the logical equivalents 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.

54F 74F398 54F 74F399 Quad 2-Port Register May 1995 54F 74F398 54F 74F399 Quad 2-Port Register General Description The ’F398 and ’F399 are the logical equivalents of a quad 2-input multiplexer feeding into four edge-triggered flipflops A common Select input determines which of the two 4-bit words is accepted The selected data enters the flipflops on the rising edge of the clock The ’F3