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參數(shù)資料
| 型號(hào)： | SNJ54ACT245K |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS |
| 中文描述： | 八路總線收發(fā)器與三態(tài)輸出 |
| 文件頁(yè)數(shù)： | 3/15頁(yè) |
| 文件大小： | 498K |
| 代理商： | SNJ54ACT245K |
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SN54ACT245, SN74ACT245
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCAS452E
–
SEPTEMBER 1994
–
REVISED OCTOBER 2002
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions (see Note 3)
SN54ACT245
MIN
SN74ACT245
MIN
UNIT
MAX
MAX
VCC
VIH
VIL
VI
VO
IOH
IOL
t/ v
Supply voltage
4.5
5.5
4.5
5.5
V
High-level input voltage
2
2
V
Low-level input voltage
0.8
0.8
V
Input voltage
0
VCC
VCC
–
24
0
VCC
VCC
–
24
V
Output voltage
0
0
V
High-level output current
mA
Low-level output current
24
24
mA
Input transition rise or fall rate
8
8
ns/V
°
C
TA
Operating free-air temperature
–
55
125
–
40
85
NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report
Implications of Slow or Floating CMOS Inputs
, literature number SCBA004.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
TA = 25
°
C
TYP
4.49
SN54ACT245
MIN
4.4
SN74ACT245
MIN
4.4
UNIT
MIN
4.4
MAX
MAX
MAX
IOH= 50 A
IOH =
–
4.5 V
5.5 V
5.4
5.49
5.4
5.4
VOH
IOH= 24 mA
IOH =
–
4.5 V
3.88
3.7
3.76
V
5.5 V
4.86
4.7
4.76
IOH =
–
50 mA
IOH =
–
75 mA
5.5 V
3.85
5.5 V
3.85
IOL= 50 A
IOL = 50 A
4.5 V
0.001
0.1
0.1
0.1
5.5 V
0.001
0.1
0.1
0.1
VOL
IOL= 24 mA
IOL = 24 mA
4.5 V
0.36
0.5
0.44
V
5.5 V
0.36
0.5
0.44
IOL = 50 mA
IOL = 75 mA
VO = VCC or GND
VI = VCC or GND
VI = VCC or GND,
One input at 3.4 V,
Other inputs at GND or VCC
VI = VCC or GND
VO = VCC or GND
5.5 V
1.65
5.5 V
1.65
±
5
±
1
40
IOZ
II
ICC
A or B ports
5.5 V
±
0.5
±
0.1
±
10
±
1
80
A
OE or DIR
5.5 V
A
IO = 0
5.5 V
4
A
ICC
§
5.5 V
0.6
1.6
1.5
mA
Ci
Cio
5 V
4.5
pF
5 V
15
pF
Not more than one output should be tested at a time, and the duration of the test should not exceed 2 ms.
For I/O ports, the parameter IOZ includes the input leakage current.
§
This is the increase in supply current for each input that is at one of the specified TTL voltage levels, rather than 0 V or VCC.
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