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參數(shù)資料
| 型號(hào)： | SN54ABT245B |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Octal Bus Transceivers With 3-State Outputs(八總線收發(fā)器（三態(tài)輸出）) |
| 中文描述： | 八路總線收發(fā)器與三態(tài)輸出（八總線收發(fā)器（三態(tài)輸出）） |
| 文件頁(yè)數(shù)： | 4/7頁(yè) |
| 文件大?。?/td> | 146K |
| 代理商： | SN54ABT245B |
SN54ABT245B, SN74ABT245B
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS081F – JANUARY 1991 – REVISED APRIL 1996
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
TA = 25
°
C
TYP
SN54ABT245B
MIN
SN74ABT245B
MIN
UNIT
MIN
MAX
MAX
MAX
VIK
VCC = 4.5 V,
VCC = 4.5 V,
VCC = 5 V,
II = –18 mA
IOH = – 3 mA
IOH = – 3 mA
IOH = – 24 mA
IOH = – 32 mA
IOL = 48 mA
IOL = 64 mA
VI = VCC or GND
VI = VCC or GND
–1.2
–1.2
–1.2
V
VOH
2.5
2.5
2.5
V
3
3
3
VCC= 4 5 V
VCC = 4.5 V
2
2
2*
2
VOL
VCC= 4 5 V
VCC = 4.5 V
0.55
0.55
V
0.55*
0.55
±
1
±
20
II
Control inputs
VCC = 0 to 5.5 V,
VCC = 2.1 V to 5.5 V,
VCC = 0 to 2.1 V,
VO = 0.5 V to 2.7 V,
VCC = 2.1 V to 0,
VO = 0.5 V to 2.7 V,
VCC = 2.1 V to 5.5 V,
OE
≥
2 V
VCC = 2.1 V to 5.5 V,
OE
≥
2 V
VCC = 0,
VCC = 5.5 V,
VCC = 5.5 V,
±
1
±
1
μ
A
A or B ports
±
20
±
100
IOZPU
OE = X
±
50
±
50
μ
A
IOZPD
OE = X
±
50
±
50
μ
A
IOZH
VO = 2.7 V,
10
10
10
μ
A
IOZL
VO = 0.5 V,
–10
–10
–10
μ
A
Ioff
ICEX
IO§
VI or VO
≤
4.5 V
VO = 5.5 V
VO = 2.5 V
Outputs high
±
100
50
±
100
50
μ
A
μ
A
mA
μ
A
mA
μ
A
Outputs high
50
–50
–140
–180
–50
–180
–50
–180
A or B ports
VCC = 5.5 V,
IO
VI = VCC or GND
5
250
250
250
ICC
Outputs low
22
30
30
30
Outputs disabled
1
250
250
250
Data inputs
VCC = 5.5 V,
One input at 3.4 V,
Other inputs at
VCC or GND
VCC = 5.5 V,
Other inputs at VCC or GND
VI = 2.5 V or 0.5 V
VO = 2.5 V or 0.5 V
Outputs enabled
1.5
1.5
1.5
mA
ICC
Outputs disabled
50
50
50
μ
A
Control inputs
One input at 3.4 V,
1.5
1.5
1.5
mA
Ci
Cio
* On products compliant to MIL-STD-883, Class B, this parameter does not apply.
All typical values are at VCC = 5 V.
The parameters IOZH and IOZL include the input leakage current.
§Not more than one output should be tested at a time, and the duration of the test should not exceed one second.
This is the increase in supply current for each input that is at the specified TTL voltage level rather than VCC or GND.
Control inputs
4
pF
A or B ports
8
pF
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