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PDF 74ACT251 Data sheet ( Hoja de datos )
| Número de pieza | 74ACT251 | |
| Descripción | 8-Input Multiplexer with 3-STATE Output | |
| Fabricantes | Fairchild Semiconductor | |
| Logotipo |  |
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November 1988
Revised November 1999
74AC251 • 74ACT251
8-Input Multiplexer with 3-STATE Output
General Description
The AC/ACT251 is a high-speed 8-input digital multiplexer.
It provides, in one package, the ability to select one bit of
data from up to eight sources. It can be used as universal
function generator to generate any logic function of four
variables. Both true and complementary outputs are pro-
vided.
Features
s ICC reduced by 50%
s Multifunctional capability
s On-chip select logic decoding
s Inverting and noninverting 3-STATE outputs
s Outputs source/sink 24 mA
s ACT251 has TTL-compatible inputs
Ordering Code:
Order Number Package Number
Package Description
74AC251SC
M16A
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Body
74AC251SJ
M16D
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74AC251MTC
MTC16
16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
74AC251PC
N16E
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide
74ACT251SC
M16A
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Body
74ACT251MTC
MTC16
16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
74ACT251PC
N16E
16-Lead Plastic Dwuwawl.-DIanta-LShineeet4PUa.ccomkage (PDIP), JEDEC MS-001, 0.300” Wide
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
Logic Symbols
Connection Diagram
IEEE/IEC
Pin Descriptions
Pin Names
Description
S0–S2
OE
Select Inputs
3-STATE Output Enable Input
I0–I7
Z
Multiplexer Inputs
3-STATE Multiplexer Output
Z Complementary 3-STATE Multiplexer Output
FACT is a trademark of Fairchild Semiconductor Corporation.
© 1999 Fairchild Semiconductor Corporation DS009945
www.fairchildsemi.com
1 page  
AC Electrical Characteristics for ACT
Symbol
Parameter
tPLH Propagation Delay
Sn to Z or Z
tPHL Propagation Delay
Sn to Z or Z
tPLH Propagation Delay
In to Z or Z
tPHL Propagation Delay
In to Z or Z
tPZH Output Enable Time
OE to Z or Z
tPZL Output Enable Time
OE to Z or Z
tPHZ Output Disable Time
OE to Z or Z
tPLZ Output Disable Time
OE to Z or Z
Note 8: Voltage Range 5.0 is 5.0V ±0.5V
VCC
(V)
(Note 8)
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
TA = +25°C
CL = 50 pF
Min Typ Max
2.5 7.0 15.5
2.5 7.5 16.5
2.5 5.5 12.0
2.5 6.5 12.5
1.5 5.0 8.5
1.5 4.5 8.5
2.0 6.0 12.0
1.5 4.5 8.5
TA = −40°C to +85°C
CL = 50 pF
Min Max
2.0 17.0
2.5 18.5
2.0 13.0
2.5 14.0
1.5 9.0
1.5 9.5
2.0 13.0
1.5 9.0
Units
ns
ns
ns
ns
ns
ns
ns
ns
Capacitance
CIN
CPD
Symbol
Parameter
Input Capacitance
Power Dissipation Capacitance
Typ
4.5
70.0
Units
pF
pF
Conditions
VCC = OPEN
VCC = 5.0V
5 www.fairchildsemi.com
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet 74ACT251.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| 74ACT251 | 8-Input Multiplexer with 3-STATE Output | Fairchild Semiconductor |
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| 74ACT251PC | 8-Input Multiplexer with 3-STATE Output | Fairchild Semiconductor |
| 74ACT251SC | 8-Input Multiplexer with 3-STATE Output | Fairchild Semiconductor |
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