Datenblatt-Suchmaschine für elektronische Bauteile |
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DM74AS157SJX Datenblatt(PDF) 1 Page - Fairchild Semiconductor |
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DM74AS157SJX Datenblatt(HTML) 1 Page - Fairchild Semiconductor |
1 / 7 page © 2000 Fairchild Semiconductor Corporation DS006290 www.fairchildsemi.com April 1984 Revised March 2000 DM74AS157 • DM74AS158 Quad 1 of 2 Line Data Selector/Multiplexer General Description These data selectors/multiplexers contain inverters and drivers to supply full on-chip data selection to the four out- put gates. A separate STROBE input is provided. A 4-bit word is selected from one of two sources and is routed to the four outputs. The AS157 presents true data whereas the AS158 presents inverted data to minimize propagation delay time. Features s Switching specifications at 50 pF s Switching specifications guaranteed over full tempera- ture and VCC range s Advanced oxide-isolated, ion-implanted Schottky TTL process s Functionally and pin for pin compatible with Schottky, low power Schottky, and advanced low power Schottky TTL counterpart s Improved AC performance over Schottky, low power Schottky, and advanced low power Schottky counter- parts s Expand any data input point s Multiplex dual data buses s General four functions of two variables (one variable is common) s Source programmable counters Ordering Code: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Connection Diagram Function Table H = HIGH Level L = LOW Level X = Don't Care Order Number Package Number Package Description DM74AS157M M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow DM74AS157SJX M16D 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide DM74AS157N N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide DM74AS158M M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow DM74AS158N N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Inputs Output Y STROBE Select A B DM74AS157 DM74AS158 HX X X L H LL L X L H LL H X H L LH X L L H LH X H H L |
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