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Электронный компонент: MC54F240J

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MC54/74F244
VCC OEb
GND
OEa
1
2
3
4
5
6
7
8
9
11
12
13
14
15
16
17
18
19
MC54/74F240
VCC OEb
GND
CONNECTION DIAGRAMS
10
20
OEa
MC54/74F241
VCC OEb
GND
OEa
Ya0 Ib0
Ya1 Ib1 Ya2 Ib2
Ya3 Ib3
Ia0 Yb0 Ia1 Yb1 Ia2 Yb2 Ia3 Yb3
Ya0 Ib0 Ya1 Ib1 Ya2
Ib2
Ya3 Ib3
Ia0 Yb0 Ia1 Yb1 Ia2 Yb2 Ia3 Yb3
Ya0 Ib0 Ya1
Ib1 Ya2 Ib2 Ya3 Ib3
Ia0 Yb0 Ia1 Yb1 Ia2 Yb2 Ia3 Yb3
4-108
FAST AND LS TTL DATA
OCTAL BUFFER/LINE DRIVER
WITH 3-STATE OUTPUTS
The F240, F241 and F244 are octal buffers and line drivers designed to be
employed as memory address drivers, clock drivers, and bus-oriented trans-
mitters/receivers which provide improved PC board density.
3-State Outputs Drive Bus Lines or Buffer Memory Address Registers
Outputs Sink 64 mA
15 mA Source Current
Input Clamp Diodes Limit High-Speed Termination Effects
ESD > 4000 Volts
DW SUFFIX
SOIC
CASE 751D-03
20
1
N SUFFIX
PLASTIC
CASE 738-03
20
1
J SUFFIX
CERAMIC
CASE 732-03
20
1
ORDERING INFORMATION
MC54/74F240
MC54/74F241
MC54/74F244
OCTAL BUFFER/LINE DRIVER
WITH 3-STATE OUTPUTS
FAST
TM
SCHOTTKY TTL
MC54FXXXJ
Ceramic
MC74FXXXN
Plastic
MC74FXXXDW SOIC
4-109
FAST AND LS TTL DATA
MC54/74F240
MC54/74F241
MC54/74F244
OEa
Ia
OEb
Ib
Ya
Yb
H
L
Z
H
L
Z
L
H
X
L
L
H
L
H
X
L
L
H
Inputs
Outputs
FUNCTION TABLE
MC54/74F240
H = HIGH Voltage Level; L = LOW Voltage Level; X = Don't Care; Z = High Impedance
OEa
Ia
OEb
Ib
Ya
Yb
L
H
Z
L
H
Z
L
H
X
H
H
L
L
H
X
L
L
H
Inputs
Outputs
FUNCTION TABLE
MC54/74F241
OEa Ia
OEb Ib
Ya
Yb
L
H
Z
L
H
Z
L
H
X
L
L
H
L
H
X
L
L
H
Inputs
Outputs
FUNCTION TABLE
MC54/74F244
GUARANTEED OPERATING RANGES
Symbol
Parameter
Min
Typ
Max
Unit
VCC
Supply Voltage
54, 74
4.5
5.0
5.5
V
TA
Operating Ambient Temperature Range
54
55
25
125
C
74
0
25
70
IOH
Output Current -- High
54
74
12
15
mA
IOL
Output Current -- Low
54
74
48
64
mA
4-110
FAST AND LS TTL DATA
MC54/74F240
MC54/74F241
MC54/74F244
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits
Symbol
Parameter
Min
Typ
Max
Unit
Test Conditions
VIH
Input HIGH Voltage
2.0
V
Guaranteed Input HIGH Voltage
VIL
Input LOW Voltage
0.8
V
Guaranteed Input LOW Voltage
VIK
Input Clamp Diode Voltage
1.2
V
IIN = 18 mA
VCC = MIN
VOH
Output HIGH Voltage
54, 74
2.4
3.4
V
IOH = 3.0 mA
VCC = 4.50 V
74
2.7
3.4
V
IOH = 3.0 mA
VCC = 4.75 V
54
2.0
V
IOH = 12 mA
VCC = 4.50 V
74
2.0
V
IOH = 15 mA
VCC = 4.50 V
VOL
Output LOW Voltage
54
0.55
V
IOL = 48 mA
VCC = MIN
74
0.55
V
IOL = 64 mA
IOZH
Output Off Current HIGH
50
A
VOUT = 2.7 V
VCC = MAX
IOZL
Output Off Current LOW
50
A
VOUT = 0.5 V
VCC = MAX
IIH
Input HIGH Current
20
A
VIN = 2.7 V
VCC = MAX
100
VIN = 7.0 V
IIL
Input LOW Current
Data Inputs
F241, F244
1.6
mA
VIN = 0.5 V
VCC = MAX
Other
1.0
IOS
Output Short Circuit Current
74
100
225
mA
VOUT = GND
VCC = MAX
(Note 2)
54
100
275
mA
ICCH
Power Supply Current HIGH
F240
35
F241, F244
60
ICCL
Power Supply Current LOW
F240
75
mA
VCC = MAX
F241, F244
90
ICCZ
Power Supply Current OFF
F240
75
F241, F244
90
NOTES:
1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable device type.
2. Not more than one output should be shorted at a time, nor for more than 1 second.
4-111
FAST AND LS TTL DATA
MC54/74F240
MC54/74F241
MC54/74F244
AC CHARACTERISTICS MC54/74F240
54/74F
54F
74F
TA = +25
C
TA = -55
C to +125
C
TA = 0
C to +70
C
VCC = +5.0 V
VCC = 5.0 V
10%
VCC = 5.0 V
10%
CL = 50 pF
CL = 50 pF
CL = 50 pF
Symbol
Parameter
Min
Typ
Max
Min
Max
Min
Max
Unit
tPLH
Propagation Delay, Data to Output
2.5
5.1
7.0
2.5
9.0
2.5
8.0
ns
tPHL
1.5
3.5
4.7
1.5
6.0
1.5
5.7
tPZH
Output Enable Time
2.0
3.5
5.2
2.0
6.5
2.0
5.7
ns
tPZL
4.0
6.9
9.0
4.0
13.5
4.0
10
tPHZ
Output Disable Time
2.0
4.0
5.3
2.0
6.5
2.0
6.3
ns
tPLZ
1.5
6.0
8.0
2.0
12.5
1.5
9.5
AC CHARACTERISTICS MC54/74F241
54/74F
54F
74F
TA = +25
C
TA = -55
C to +125
C
TA = 0
C to +70
C
VCC = +5.0 V
VCC = 5.0 V
10%
VCC = 5.0 V
10%
CL = 50 pF
CL = 50 pF
CL = 50 pF
Symbol
Parameter
Min
Typ
Max
Min
Max
Min
Max
Unit
tPLH
Propagation Delay, Data to Output
2.5
4.0
5.2
2.0
6.5
2.5
6.2
ns
tPHL
2.5
4.0
5.2
2.0
7.0
2.5
6.5
tPZH
Output Enable Time
2.0
4.3
5.7
2.0
7.0
2.0
6.7
ns
tPZL
2.0
5.4
7.0
2.0
8.5
2.0
8.0
tPHZ
Output Disable Time
2.0
4.5
6.0
2.0
7.0
2.0
7.0
ns
tPLZ
2.0
4.5
6.5
2.0
12.5
2.0
7.5
AC CHARACTERISTICS MC54/74F244
54/74F
54F
74F
TA = +25
C
TA = -55
C to +125
C
TA = 0
C to +70
C
VCC = +5.0 V
VCC = 5.0 V
10%
VCC = 5.0 V
10%
CL = 50 pF
CL = 50 pF
CL = 50 pF
Symbol
Parameter
Min
Typ
Max
Min
Max
Min
Max
Unit
tPLH
Propagation Delay, Data to Output
2.5
4.0
5.2
2.5
6.5
2.5
6.2
ns
tPHL
2.5
4.0
5.2
2.5
7.0
2.5
6.5
tPZH
Output Enable Time
2.0
4.3
5.7
2.0
7.0
2.0
6.7
ns
tPZL
2.0
5.4
7.0
2.0
8.5
2.0
8.0
tPHZ
Output Disable Time
2.0
4.5
6.0
2.0
7.0
2.0
7.0
ns
tPLZ
2.0
4.5
6.0
2.0
10.0
2.0
7.0