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參數(shù)資料
| 型號： | SN54ABT8245JT |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | SCAN TEST DEVICES WITH OCTAL BUS TRANSCEIVERS |
| 中文描述： | 掃描測試設(shè)備與八進制總線收發(fā)器 |
| 文件頁數(shù)： | 20/25頁 |
| 文件大?。?/td> | 364K |
| 代理商： | SN54ABT8245JT |
SN54ABT8245, SN74ABT8245
SCAN TEST DEVICES
WITH OCTAL BUS TRANSCEIVERS
SCBS124D – AUGUST 1992 – REVISED DECEMBER 1996
20
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions (see Note 3)
SN54ABT8245
MIN
SN74ABT8245
MIN
UNIT
MAX
MAX
VCC
VIH
VIL
VI
IOH
IOL
t/
v
TA
NOTE 3: Unused pins (input or I/O) must be held high or low to prevent them from floating.
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
–24
0
VCC
–32
V
High-level output current
mA
Low-level output current
48
64
mA
Input transition rise or fall rate
10
10
ns/V
°
C
Operating free-air temperature
–55
125
–40
85
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
TA = 25
°
C
TYP
SN54ABT8245
SN74ABT8245
UNIT
MIN
MAX
MIN
MAX
MIN
MAX
VIK
VCC = 4.5 V,
VCC = 4.5 V,
VCC = 5 V,
VCC = 4.5 V,
VCC = 4.5 V,
VCC = 4.5 V,
VCC = 4.5 V,
VCC = 5.5 V,
VI = VCC or GND
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 0 to 2 V,
VCC = 2 V or 0,
VCC = 0,
VCC = 5.5 V,
VCC = 5.5 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
2
2
2*
2
VOL
0.55
0.55
V
0.55*
0.55
±
1
±
100
10
II
DIR, OE, TCK
±
1
±
1
μ
A
A or B ports
±
100
10
±
100
10
IIH
IIL
IOZH
IOZL
IOZPU
IOZPD
Ioff
ICEX
IO§
VI = VCC
VI = GND
VO = 2.7 V
VO = 0.5 V
VO = 0.5 V or 2.7 V
VO = 0.5 V or 2.7 V
VI or VO
≤
4.5 V
VO = 5.5 V
VO = 2.5 V
TDI, TMS
μ
A
μ
A
μ
A
μ
A
μ
A
μ
A
μ
A
μ
A
mA
TDI, TMS
–40
–160
–40
–160
–40
–160
50
50
50
–50
±
50
±
50
±
100
50
–50
±
50
±
50
–50
±
50
±
50
±
100
50
Outputs high
50
–50
–100
–180
–50
–180
–50
–180
VCC = 5.5 V,
VCC 5.5 V,
IO = 0,
VI = VCC or GND
A or B
ports
Outputs high
0.9
2
2
2
ICC
Outputs low
30
38
38
38
mA
Outputs disabled
0.9
2
2
2
ICC
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
VO = 2.5 V or 0.5 V
* 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 1 second.
This is the increase in supply current for each input that is at the specified TTL voltage level rather than VCC or GND.
1 5
1.5
1 5
1.5
1 5
1.5
mA
,
Ci
Cio
Co
Control inputs
3
pF
A or B ports
10
pF
TDO
8
pF
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| SN54ABT827 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:10-BIT BUFFERS/DRIVERS WITH 3-STATE OUTPUTS |
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| SN54ABT833 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:8-BIT TO 9-BIT PARITY BUS TRANSCEIVERS |
| SN54ABT833FK | 制造商:TI 制造商全稱:Texas Instruments 功能描述:8-BIT TO 9-BIT PARITY BUS TRANSCEIVERS |
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