DM74ALS251N ,3-STATE 1 of 8 Line Data Selector/MultiplexerFeaturesThis Data Selector/Multiplexer contains full on-chip decod-
DM74ALS251M-DM74ALS251N
3-STATE 1 of 8 Line Data Selector/Multiplexer
DM74ALS251 3-STATE 1-of-8 Line Data Selector/Multiplexer April 1984 Revised April 2000 DM74ALS251 3-STATE 1-of-8 Line Data Selector/Multiplexer General Description Features This Data Selector/Multiplexer contains full on-chip decod-Advanced oxide-isolated, ion-implanted Schottky TTL ing to select one-of-eight data sources as a result of a process unique three-bit binary code at the Select inputs. Two com-Switching performance is guaranteed over full tempera- plementary outputs provide both inverting and non-invert- ture and V supply range CC ing buffer operation. An Output Control input is provided Pin and functional compatible with LS family counterpart which, when at the high level, places both outputs in the Improved output transient handling capability high impedance OFF-State. In order to prevent bus access conflicts, output disable times are shorter than outputOutput control circuitry incorporates power-up 3-STATE enable times. The Select input buffers incorporate internal feature overlap features to ensure that select input changes do not cause invalid output transients. Ordering Code: 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 Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Connection Diagram Function Table Inputs Outputs Select Strobe CBA S YW XX X H Z Z LL L L D D 0 0 LL H L D D 1 1 LH L L D D 2 2 LH H L D D 3 3 HL L L D D 4 4 HL H L D D 5 5 HH L L D D 6 6 HHH L D D 7 7 H = HIGH Level L = LOW Level X = Don't Care Z = High Impedance (OFF) D0 thru D7 = The Level of the Respective D Input © 2000 DS006214
