SN54HC245, SN74HC245
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCLS131D – DECEMBER 1982 – REVISED AUGUST 2003
recommended operating conditions (see Note 3)
SN54HC245
MIN NOM
SN74HC245
MIN NOM
UNIT
MAX
MAX
V
V
Supply voltage
2
1.5
5
6
2
1.5
5
6
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
= 2 V
High-level input voltage
= 4.5 V
= 6 V
3.15
4.2
3.15
4.2
V
V
IH
= 2 V
0.5
1.35
1.8
0.5
1.35
1.8
V
IL
Low-level input voltage
= 4.5 V
= 6 V
V
V
Input voltage
0
0
V
V
0
0
V
V
V
V
I
CC
CC
Output voltage
O
CC
CC
V
CC
V
CC
V
CC
= 2 V
1000
500
400
125
1000
500
400
85
∆t/∆v
Input transition rise/fall time
= 4.5 V
= 6 V
ns
T
A
Operating free-air temperature
–55
–40
°C
NOTE 3: All unused inputs of the device must be held at V
or GND to ensure proper device operation. Refer to the TI application report,
CC
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
T
= 25°C
SN54HC245
SN74HC245
A
PARAMETER
TEST CONDITIONS
V
UNIT
CC
MIN
TYP
MAX
MIN
1.9
4.4
5.9
3.7
5.2
MAX
MIN
1.9
MAX
2 V
4.5 V
6 V
1.9 1.998
4.4 4.499
5.9 5.999
I
= –20 µA
4.4
OH
V
V = V or V
IH
5.9
V
OH
I
IL
IL
I
I
= –6 mA
4.5 V
6 V
3.98
5.48
4.3
5.8
3.84
5.34
OH
= –7.8 mA
OH
2 V
0.002
0.001
0.001
0.17
0.15
0.1
0.1
0.1
0.1
0.26
0.26
100
0.5
8
0.1
0.1
0.1
0.1
I
= 20 µA
4.5 V
6 V
OL
V
V = V or V
0.1
0.1
V
OL
I
IH
I
I
= 6 mA
4.5 V
6 V
0.4
0.33
0.33
1000
5
OL
= 7.8 mA
0.4
OL
I
I
I
DIR or OE V = V
or 0
6 V
1000
10
nA
µA
µA
pF
I
I
CC
CC
A or B
V
O
= V
or 0
6 V
0.01
OZ
CC
CC
V = V
I
or 0,
I
O
= 0
6 V
160
10
80
C
DIR or OE
2 V to 6 V
3
10
10
i
3
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