74LVX244SJX [FAIRCHILD]
Bus Driver, LV/LV-A/LVX/H Series, 2-Func, 4-Bit, True Output, CMOS, PDSO20, 5.30 MM, LEAD FREE, EIAJ TYPE2, SOP-20;
| 型号： | 74LVX244SJX |
| 厂家： | 
FAIRCHILD SEMICONDUCTOR |
| 描述： | Bus Driver, LV/LV-A/LVX/H Series, 2-Func, 4-Bit, True Output, CMOS, PDSO20, 5.30 MM, LEAD FREE, EIAJ TYPE2, SOP-20 驱动 光电二极管 逻辑集成电路 |
| 文件： | 总6页 (文件大小：72K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
February 1993
Revised September 2003
74LVX244
Low Voltage Octal Buffer/Line Driver with
3-STATE Outputs
General Description
Features
■ Input voltage translation from 5V to 3V
The LVX244 is an octal non-inverting 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. The inputs tolerate
up to 7V allowing interface of 5V systems to 3V systems.
■ Ideal for low power/low noise 3.3V applications
■ Guaranteed simultaneous switching noise level and
dynamic threshold performance
Ordering Code:
Order Number Package Number
Package Description
74LVX244M
M20B
M20D
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74LVX244SJ
74LVX244MTC
MTC20
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Devices also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
Logic Symbol
Pin Descriptions
IEEE/IEC
Pin Names
OE1, OE2
Description
3-STATE Output Enable Inputs
I0–I7
Inputs
O0–O7
Outputs
Truth Tables
Inputs
Outputs
OE1
In
(Pins 12, 14, 16, 18)
L
L
L
H
X
L
H
Z
Connection Diagram
H
Inputs
Outputs
OE2
In
(Pins 3, 5, 7, 9)
L
L
L
H
X
L
H
Z
H
H = HIGH Voltage Level
X = Immaterial
L = LOW Voltage Level
Z = High Impedance
© 2003 Fairchild Semiconductor Corporation
DS011552
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Absolute Maximum Ratings(Note 1)
Recommended Operating
Conditions (Note 2)
Supply Voltage (VCC
)
−0.5V to +7.0V
DC Input Diode Current (IIK
VI = −0.5V
)
Supply Voltage (VCC
)
2.0V to 3.6V
0V to 5.5V
−20 mA
Input Voltage (VI)
DC Input Voltage (VI)
−0.5V to 7V
Output Voltage (Vo)
0V to VCC
DC Output Diode Current (IOK
)
Operating Temperature (TA)
−40°C to +85°C
0 ns/V to 100 ns/V
V
V
O = −0.5V
−20 mA
+20 mA
Input Rise and Fall Time (∆t/∆V)
O = VCC + 0.5V
Note 1: The “Absolute Maximum Ratings” are those values beyond which
the safety of the device cannot be guaranteed. The device should not be
operated at these limits. The parametric values defined in the Electrical
Characteristics tables are not guaranteed at the absolute maximum ratings.
The “Recommended Operating Conditions” table will define the conditions
for actual device operation.
DC Output Voltage (VO)
DC Output Source
−0.5V to VCC + 0.5V
or Sink Current (IO)
±25 mA
DC VCC or Ground Current
Note 2: Unused inputs must be held HIGH or LOW. They may not float.
(ICC or IGND
)
±75 mA
−65°C to +150°C
180 mW
Storage Temperature (TSTG
Power Dissipation
)
DC Electrical Characteristics
T
A = +25°C
T
A = −40°C to +85°C
VCC
Symbol
Parameter
Units
Conditions
Min
1.5
2.0
2.4
Typ
Max
Min
1.5
2.0
2.4
Max
VIH
HIGH Level Input
Voltage
2.0
3.0
3.6
2.0
3.0
3.6
2.0
3.0
3.0
2.0
3.0
3.0
3.6
V
VIL
LOW Level Input
Voltage
0.5
0.8
0.8
0.5
0.8
0.8
V
V
VOH
VOL
IOZ
HIGH Level Output
Voltage
1.9
2.9
2.0
3.0
1.9
2.9
V
IN = VIH or VIL
I
I
I
I
I
I
OH = −50 µA
OH = −50 µA
OH = −4 mA
OL = 50 µA
OL = 50 µA
OL = 4 mA
2.58
2.48
LOW Level Output
Voltage
0.0
0.0
0.1
0.1
0.1
0.1
V
IN = VIH or VIL
V
0.36
±0.25
0.44
±2.5
3-STATE Output
µA
V
V
V
V
IN = VIH or VIL
Off-State Current
OUT = VCC or GND
IN = 5.5V or GND
IN = VCC or GND
IIN
Input Leakage Current
Quiescent Supply Current
3.6
3.6
±0.1
±1.0
µA
µA
ICC
4.0
40.0
Noise Characteristics (Note 3)
VCC
T
A = 25°C
CL (pF)
Symbol
Parameter
Units
(V)
3.3
3.3
3.3
3.3
Typ
Limit
VOLP
VOLV
VIHD
VILD
Quiet Output Maximum Dynamic VOL
Quiet Output Minimum Dynamic VOL
0.5
0.8
−0.8
2.0
V
V
V
V
50
50
50
50
−0.5
Minimum HIGH Level Dynamic Input Voltage
Maximum LOW Level Dynamic Input Voltage
0.8
Note 3: Input tr = tf = 3 ns
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2
AC Electrical Characteristics
VCC
T
A = +25°C
TA = −40°C to +85°C
Symbol
Parameter
Units
Conditions
L = 15 pF
(V)
Min
Typ
6.1
8.6
4.7
7.2
7.1
Max
11.4
14.9
7.1
Min
1.0
1.0
1.0
1.0
1.0
Max
13.5
17.0
8.5
tPLH
tPHL
Propagation Delay
Time
2.7
C
C
C
C
C
R
C
R
C
R
C
R
C
R
C
L = 50 pF
L = 15 pF
L = 50 pF
L = 15 pF,
L = 1 kΩ
L = 50 pF,
L = 1 kΩ
L = 15 pF,
L = 1 kΩ
L = 50 pF,
L = 1 kΩ
L = 50 pF,
L = 1 kΩ
L = 50 pF
ns
3.3 ± 0.3
10.6
13.8
12.0
16.5
tPZL
tPZH
3-STATE Output
Enable Time
2.7
9.6
5.5
8.0
17.3
8.8
1.0
1.0
1.0
20.0
10.5
14.0
ns
3.3 ± 0.3
12.3
tPLZ
3-STATE Output
Disable Time
2.7
3.3 ± 0.3
2.7
11.6
9.7
16.0
11.4
1.5
1.0
1.0
19.0
13.0
1.5
ns
ns
tPHZ
tOSLH
tOSHL
Output to Output
Skew (Note 4)
3.3
1.5
1.5
Note 4: Parameter guaranteed by design. tOSLH = |tPLHm − tPLHn|, tOSHL = |tPHLm − tPHLn
|
Capacitance
T
A = +25°C
TA =−40°C to +85°C
Symbol
Parameter
Units
Min
Typ
4
Max
10
Min
Max
CIN
Input Capacitance
Output Capacitance
10
pF
pF
pF
COUT
CPD
6
Power Dissipation Capacitance (Note 5)
19
Note 5: CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load.
3
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Physical Dimensions inches (millimeters) unless otherwise noted
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
Package Number M20B
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4
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
Package Number M20D
5
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Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Package Number MTC20
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and
Fairchild reserves the right at any time without notice to change said circuitry and specifications.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD
SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the
body, or (b) support or sustain life, and (c) whose failure
to perform when properly used in accordance with
instructions for use provided in the labeling, can be rea-
sonably expected to result in a significant injury to the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be rea-
sonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
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