參數(shù)資料
型號(hào)： TC74VHC245FK
廠商： Toshiba Corporation
英文描述： Octal Bus Transceiver
中文描述： 八路總線收發(fā)器
文件頁(yè)數(shù)： 3/9頁(yè)
文件大小： 241K
代理商： TC74VHC245FK
TC74VHC245F/FT/FK
2007-10-01
3
Operating Ranges
(Note)
Characteristics
Symbol
Rating
Unit
Supply voltage
V
CC
2.0 to 5.5
V
Input voltage (DIR, G )
V
IN
0 to 5.5
V
Bus I/O voltage
V
I/O
0 to V
CC
V
Operating temperature
T
opr
40 to 85
°C
Input rise and fall time
dt/dv
0 to 100 (V
CC
= 3.3 ± 0.3 V)
0 to 20 (V
CC
= 5 ± 0.5 V)
ns/V
Note:
The operating ranges must be maintained to ensure the normal operation of the device. Unused inputs and
bus inputs must be tied to either VCC or GND. Please connect both bus inputs and the bus outputs with
VCC or GND when the I/O of the bus terminal changes by the function. In this case, please note that the
output is not short-circuited.
Electrical Characteristics
DC Characteristics
Test Condition
Ta = 25°C
Ta =
40 to 85°C
Characteristics
Symbol
V
CC
(V)
Min
Typ.
Max
Min
Max
Unit
High-level input
voltage
V
IH
―
2.0
3.0
to
5.5
1.50
V
CC
×
0.7
―
―
―
―
1.50
V
CC
×
0.7
―
―
V
Low-level input
voltage
V
IL
―
2.0
3.0
to
5.5
―
―
―
―
0.50
V
CC
×
0.3
―
―
0.50
V
CC
×
0.3
V
I
OH
=
50
μ
A
2.0
3.0
4.5
1.9
2.9
4.4
2.0
3.0
4.5
―
―
―
1.9
2.9
4.4
―
―
―
High-level output
voltage
V
OH
V
IN
= V
IH
or
V
IL
I
OH
=
4 mA
I
OH
=
8 mA
3.0
4.5
2.58
3.94
―
―
―
―
2.48
3.80
―
―
V
I
OL
= 50
μ
A
2.0
3.0
4.5
―
―
―
0.0
0.0
0.0
0.1
0.1
0.1
―
―
―
0.1
0.1
0.1
Low-level output
voltage
V
OL
V
IN
= V
IH
or
V
IL
I
OL
= 4 mA
I
OL
= 8 mA
3.0
4.5
―
―
―
―
0.36
0.36
―
―
0.44
0.44
V
3-state output
off-state current
I
OZ
V
IN
= V
IH
or V
IL
V
OUT
= V
CC
or GND
5.5
―
―
±0.25
―
±2.50
μ
A
Input leakage
current
I
IN
V
IN
= 5.5 V or GND
0 to
5.5
―
―
±0.1
―
±1.0
μ
A
Quiescent supply
current
I
CC
V
IN
= V
CC
or GND
5.5
―
―
4.0
―
40.0
μ
A
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參數(shù)描述
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