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PDF 74F148PC Data sheet ( Hoja de datos )
| Número de pieza | 74F148PC | |
| Descripción | 8-Line to 3-Line Priority Encoder | |
| Fabricantes | Fairchild Semiconductor | |
| Logotipo |  |
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April 1988
Revised July 1999
74F148
8-Line to 3-Line Priority Encoder
General Description
The F148 provides three bits of binary coded output repre-
senting the position of the highest order active input, along
with an output indicating the presence of any active input. It
is easily expanded via input and output enables to provide
priority encoding over many bits.
Features
s Encodes eight data lines in priority
s Provides 3-bit binary priority code
s Input enable capability
s Signals when data is present on any input
s Cascadable for priority encoding of n bits
Ordering Code:
Order Number Package Number
Package Description
74F148SC
M16A
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
74F148SJ
M16D
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74F148PC
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.
Logic Symbols
Connection Diagram
IEEE/IEC
Truth Table
Inputs
Outputs
EI I0 I1 I2 I3 I4 I5 I6 I7 GS A0 A1 A2 EO
HXXXXXXXX H HHH H
LHHHHHHHH H HHH L
LXXXXXXXL L L L L H
LXXXXXXLH L HL L H
L XXXXX LHH L LHL H
L XXXX LHHH L HHL H
L XXX LHHHH L L LH H
L XX LHHHHH L H LH H
L X LHHHHHH L LHH H
L LHHHHHHH L HHH H
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
© 1999 Fairchild Semiconductor Corporation DS009480
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
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
Package Number M16D
5 www.fairchildsemi.com
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet 74F148PC.PDF ] | |
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