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參數(shù)資料
| 型號(hào)： | ABT245B |
| 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 |
| 文件頁數(shù)： | 4/23頁 |
| 文件大?。?/td> | 1021K |
| 代理商： | ABT245B |
SCBS081L JANUARY 1991 REVISED APRIL 2005
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
SN54ABT245A
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
1.2
1.2
1.2
V
2.5
2.5
2.5
VOH
3
3
3
V
VCC = 4.5 V
2
2
2*
2
VOL
VCC = 4.5 V
0.55
0.55
V
0.55*
0.55
Vhys
100
mV
Control inputs
VCC = 0 to 5.5 V, VI = VCC or GND
VCC = 2.1 V to 5.5 V,
VI = VCC or GND
VCC = 0 to 2.1 V,
VO = 0.5 V to 2.7 V, OE = X
VCC = 2.1 V to 0,
VO = 0.5 V to 2.7 V, OE = X
VCC = 2.1 V to 5.5 V,
VO = 2.7 V, OE
≥
2 V
VCC = 2.1 V to 5.5 V,
VO = 0.5 V, OE
≥
2 V
VCC = 0,
VCC = 5.5 V,
VO = 5.5 V
VCC = 5.5 V,
±
1
±
1
±
1
II
A or B ports
±
20
±
100
±
20
μ
A
IOZPU
±
50
±
50
±
50
μ
A
IOZPD
±
50
±
50
±
50
μ
A
IOZH
10
10
10
μ
A
IOZL
10
10
10
μ
A
Ioff
VI or VO
≤
5.5 V
±
100
±
100
μ
A
ICEX
Outputs high
50
50
50
μ
A
IO§
VO = 2.5 V
Outputs high
50
140
180
50
180
50
180
mA
μ
A
mA
μ
A
VCC = 5.5 V,
V = V
VI = VCC or GND
5
250
250
250
ICC
A or B ports
Outputs low
22
30
30
30
IO = 0,
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, One input at 3.4 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
1.5
1.5
1.5
mA
Ci
Cio
Control inputs
4
pF
A or B ports
8
pF
* On products compliant to MIL-PRF-38535, 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.
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