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DM74ALS251 датащи(PDF) 1 Page - Fairchild Semiconductor |
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DM74ALS251 датащи(HTML) 1 Page - Fairchild Semiconductor |
1 / 7 page © 2000 Fairchild Semiconductor Corporation DS006214 www.fairchildsemi.com April 1984 Revised April 2000 DM74ALS251 3-STATE 1-of-8 Line Data Selector/Multiplexer General Description This Data Selector/Multiplexer contains full on-chip decod- ing to select one-of-eight data sources as a result of a unique three-bit binary code at the Select inputs. Two com- plementary outputs provide both inverting and non-invert- ing buffer operation. An Output Control input is provided which, when at the high level, places both outputs in the high impedance OFF-State. In order to prevent bus access conflicts, output disable times are shorter than output enable times. The Select input buffers incorporate internal overlap features to ensure that select input changes do not cause invalid output transients. Features s Advanced oxide-isolated, ion-implanted Schottky TTL process s Switching performance is guaranteed over full tempera- ture and VCC supply range s Pin and functional compatible with LS family counterpart s Improved output transient handling capability s Output control circuitry incorporates power-up 3-STATE feature 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 Z = High Impedance (OFF) D0 thru D7 = The Level of the Respective D Input Order Number Package Number Package Description DM74ALS251M M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow DM74ALS251SJ M16D 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide DM74ALS251N N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Inputs Outputs Select Strobe CBA S YW XX X H Z Z LL L L D0 D0 LL H L D1 D1 LH L L D2 D2 LH H L D3 D3 HL L L D4 D4 HL H L D5 D5 HH L L D6 D6 HHH L D7 D7 |
Аналогичный номер детали - DM74ALS251 |
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Аналогичное описание - DM74ALS251 |
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