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MC74VHCT244A Datasheet(PDF) 2 Page - ON Semiconductor

Part No. MC74VHCT244A
Description  Octal Bus Buffer/Line Driver with 3-State Outputs
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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MC74VHCT244A Datasheet(HTML) 2 Page - ON Semiconductor

   
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MC74VHCT244A
MOTOROLA
VHC Data – Advanced CMOS Logic
DL203 — Rev 1
2
MAXIMUM RATINGS*
Symbol
Parameter
Value
Unit
VCC
DC Supply Voltage
– 0.5 to + 7.0
V
Vin
DC Input Voltage
– 0.5 to + 7.0
V
Vout
DC Output Voltage
Output in 3–State
High or Low State
– 0.5 to + 7.0
– 0.5 to VCC + 0.5
V
IIK
Input Diode Current
– 20
mA
IOK
Output Diode Current (VOUT < GND; VOUT > VCC)
± 20
mA
Iout
DC Output Current, per Pin
± 25
mA
ICC
DC Supply Current, VCC and GND Pins
± 75
mA
PD
Power Dissipation in Still Air,
SOIC Packages†
TSSOP Package†
500
450
mW
Tstg
Storage Temperature
– 65 to + 150
_C
* Absolute maximum continuous ratings are those values beyond which damage to the device
may occur. Exposure to these conditions or conditions beyond those indicated may adversely
affect device reliability. Functional operation under absolute–maximum–rated conditions is not
implied.
†Derating — SOIC Packages: – 7 mW/
_C from 65_ to 125_C
TSSOP Package: – 6.1 mW/
_C from 65_ to 125_C
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Min
Max
Unit
VCC
DC Supply Voltage
4.5
5.5
V
Vin
DC Input Voltage
0
5.5
V
Vout
DC Output Voltage
Output in 3–State
High or Low State
0
0
5.5
VCC
V
TA
Operating Temperature
– 40
+ 85
_C
tr, tf
Input Rise and Fall Time
VCC =5.0V ±0.5V
0
20
ns/V
DC ELECTRICAL CHARACTERISTICS
Sb l
P
T
C
di i
VCC
TA = 25°C
TA = – 40 to 85°C
Ui
Symbol
Parameter
Test Conditions
VCC
V
Min
Typ
Max
Min
Max
Unit
VIH
Minimum High–Level
Input Voltage
4.5 to
5.5
2.0
2.0
V
VIL
Maximum Low–Level
Input Voltage
4.5 to
5.5
0.8
0.8
V
VOH
Minimum High–Level
Output Voltage
IOH = – 50µA
4.5
4.4
4.5
4.4
V
Output Voltage
Vin = VIH or VIL
IOH = – 8mA
4.5
3.94
3.80
VOL
Maximum Low–Level
Output Voltage
IOL = 50µA
4.5
0.0
0.1
0.1
V
Output Voltage
Vin = VIH or VIL
IOL = 8mA
4.5
0.36
0.44
Iin
Maximum Input
Leakage Current
Vin = 5.5 V or GND
0 to 5.5
± 0.1
± 1.0
µA
IOZ
Maximum 3–State
Leakage Current
Vin = VIL or VIH
Vout = VCC or GND
5.5
± 0.25
± 2.5
µA
ICC
Maximum Quiescent
Supply Current
Vin = VCC or GND
5.5
4.0
40.0
µA
This device contains protection
circuitry to guard against damage
due to high static voltages or electric
fields. However, precautions must
be taken to avoid applications of any
voltage higher than maximum rated
voltages to this high–impedance cir-
cuit. For proper operation, Vin and
Vout should be constrained to the
range GND
v (Vin or Vout) v VCC.
Unused inputs must always be
tied to an appropriate logic voltage
level (e.g., either GND or VCC).
Unused outputs must be left open.


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