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PDF MC74AC240 Data sheet ( Hoja de datos )
| Número de pieza | MC74AC240 | |
| Descripción | OCTAL BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS | |
| Fabricantes | Motorola Semiconductors | |
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( DataSheet : www.DataSheet4U.com )
MC74AC240
MC74ACT240
Octal Buffer/Line Driver
with 3ĆState Outputs
The MC74AC240/74ACT240 is an octal buffer and line driver designed to be
employed as a memory address driver, clock driver and bus oriented transmitter
or receiver which provides improved PC board density.
• 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers
• Outputs Source/Sink 24 mA
• ′ACT240 Has TTL Compatible Inputs
VCC OE2
20 19 18 17 16 15 14 13 12 11
OCTAL BUFFER/LINE
DRIVER WITH
3-STATE OUTPUTS
N SUFFIX
CASE 738-03
PLASTIC
1 2 3 4 5 6 7 8 9 10
OE1 GND
DW SUFFIX
CASE 751D-04
PLASTIC
TRUTH TABLE
Inputs
Outputs
OE1
L
L
H
D
L
H
X
(Pins 12, 14, 16, 18)
H
L
Z
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
TRUTH TABLE
Inputs
Outputs
OE2 D
(Pins 3, 5, 7, 9)
LL
LH
HX
H
L
Z
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
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FACT DATA
5-1
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1 page  
MC74AC240 MC74ACT240
AC CHARACTERISTICS (For Figures and Waveforms — See Section 3)
74ACT
Symbol
Parameter
VCC*
(V)
TA = +25°C
CL = 50 pF
tPLH
Propagation Delay
Data to Output
tPHL
Propagation Delay
Data to Output
tPZH
Output Enable Time
tPZL
Output Enable Time
tPHZ
Output Disable Time
tPLZ
Output Disable Time
* Voltage Range 5.0 V is 5.0 V ±0.5 V.
Min Typ Max
5.0 1.5 6.0 8.5
5.0 1.5 5.5 7.5
5.0 1.5 7.0 8.5
5.0 2.0 7.0 9.5
5.0 2.0 8.0 9.5
5.0 2.5 6.5 10.0
74ACT
TA = –40°C
to +85°C
CL = 50 pF
Min Max
1.5 9.5
1.5 8.5
1.0 9.5
1.5 10.5
2.0 10.5
2.0 10.5
Unit
ns
ns
ns
ns
ns
ns
Fig.
No.
3-5
3-5
3-7
3-8
3-7
3-8
CAPACITANCE
Symbol
Parameter
CIN
CPD
Input Capacitance
Power Dissipation Capacitance
Value
Typ
4.5
45
Unit
pF
pF
Test Conditions
VCC = 5.0 V
VCC = 5.0 V
FACT DATA
5-5
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet MC74AC240.PDF ] | |
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