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PDF SN74LS251 Data sheet ( Hoja de datos )
| Número de pieza | SN74LS251 | |
| Descripción | LOW POWER SCHOTTKY | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
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SN74LS251
8-Input Multiplexer
with 3-State Outputs
The TTL/MSI SN74LS251 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. The LS251 can be used as a universal
function generator to generate any logic function of four variables.
Both assertion and negation outputs are provided.
• Schottky Process for High Speed
• Multifunction Capability
• On-Chip Select Logic Decoding
• Inverting and Non-Inverting 3-State Outputs
• Input Clamp Diodes Limit High Speed Termination Effects
GUARANTEED OPERATING RANGES
Symbol
Parameter
Min Typ Max Unit
VCC Supply Voltage
TA Operating Ambient
Temperature Range
4.75 5.0 5.25
V
0 25 70 °C
IOH Output Current – High
IOL Output Current – Low
– 2.6
24
mA
mA
http://onsemi.com
LOW
POWER
SCHOTTKY
16
1
PLASTIC
N SUFFIX
CASE 648
16
1
SOIC
D SUFFIX
CASE 751B
ORDERING INFORMATION
Device
Package
Shipping
SN74LS251N 16 Pin DIP 2000 Units/Box
SN74LS251D
16 Pin
2500/Tape & Reel
© Semiconductor Components Industries, LLC, 1999
December, 1999 – Rev. 6
1
Publication Order Number:
SN74LS251/D
1 page  
SN74LS251
3-STATE AC WAVEFORMS
VIN
VOUT
1.3 V
tPLH
1.3 V
Figure 1.
1.3 V
tPHL
1.3 V
VIN
VOUT
1.3 V
tPHL
1.3 V
1.3 V
tPLH
1.3 V
Figure 2.
VE
tPZL
VOUT
1.3 V
1.3 V
Figure 3.
1.3 V
0.5 V
tPLZ
≈ 1.3 V
VOL
0.5 V
VE
tPZH
VOUT
1.3 V
tPHZ
1.3 V
1.3 V
≥ VOH
≈ 1.3 V
0.5 V
Figure 4.
TO OUTPUT
UNDER TEST
VCC
RL
SW1
AC LOAD CIRCUIT
5 kΩ
CL* SW2
SWITCH POSITIONS
SYMBOL
tPZH
tPZL
tPLZ
tPHZ
SW1
Open
Closed
Closed
Closed
SW2
Closed
Open
Closed
Closed
* Includes Jig and Probe Capacitance.
Figure 5.
http://onsemi.com
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet SN74LS251.PDF ] | |
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