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PDF DM74ALS251 Data sheet ( Hoja de datos )
| Número de pieza | DM74ALS251 | |
| Descripción | 3-STATE 1-of-8 Line Data Selector/Multiplexer | |
| Fabricantes | Fairchild Semiconductor | |
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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:
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
Select
Strobe
CBA
S
XXX
H
LLL
L
L LH
L
LHL
L
L HH
L
HLL
L
HLH
L
HHL
L
HHH
L
H = HIGH Level
L = LOW Level
X = Don't Care
Z = High Impedance (OFF)
D0 thru D7 = The Level of the Respective D Input
Outputs
YW
ZZ
D0 D0
D1 D1
D2 D2
D3 D3
D4 D4
D5 D5
D6 D6
D7 D7
© 2000 Fairchild Semiconductor Corporation DS006214
www.fairchildsemi.com
1 page  
Physical Dimensions inches (millimeters) unless otherwise noted
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
Package Number M16A
5 www.fairchildsemi.com
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet DM74ALS251.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
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