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74F398 Datasheet(PDF) 1 Page - Fairchild Semiconductor |
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74F398 Datasheet(HTML) 1 Page - Fairchild Semiconductor |
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© 2000 Fairchild Semiconductor Corporation DS009533 www.fairchildsemi.com April 1988 Revised October 2000 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. The 74F399 is the 16-pin version of the 74F398, with only the Q outputs of the flip-flops available. Features s Select inputs from two data sources s Fully positive edge-triggered operation s Both true and complement outputs—74F398 Ordering Code: Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code. Connection Diagrams 74F398 74F399 Order Number Package Number Package Description 74F398SC M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide 74F398PC N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide 74F399SC M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow 74F399SJ M16D 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 74F399PC N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide |
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