74ACT399

74AC399 74ACT399 Quad 2-Port Register June 1988 Revised October 2000 74AC399 74ACT399 Quad 2-Port Register General Description 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. Features s ICC reduced by 50% s Select inputs from two data sources s Fully positive edge-triggered operation s Outputs source/sink 24 mA s AC/ACT399 has TTL-compatible inputs Ordering Code: Order Number Package Number Package Description 74AC399SC M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow 74AC399PC N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide 74ACT399SC M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow 74ACT399SJ M16D 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide...