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參數(shù)資料
| 型號： | SNJ54BCT8244AFKR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 總線收發(fā)器 |
| 英文描述： | BCT/FBT SERIES, DUAL 4-BIT BOUNDARY SCAN DRIVER, TRUE OUTPUT, CQCC28 |
| 封裝： | CERAMIC, LCC-28 |
| 文件頁數(shù)： | 7/29頁 |
| 文件大?。?/td> | 618K |
| 代理商： | SNJ54BCT8244AFKR |
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SN54BCT8244A, SN74BCT8244A
SCAN TEST DEVICES
WITH OCTAL BUFFERS
SCBS042E FEBRUARY 1990 REVISED JULY 1996
15
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
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T
est-Logic-Reset
Run-T
est/Idle
Select-DR-Scan
Select-IR-Scan
Capture-IR
Shift-IR
Exit1-IR
Update-IR
Select-DR-Scan
Capture-DR
Shift-DR
Exit1-DR
Update-DR
Select-DR-Scan
Select-IR-Scan
T
est-Logic-Reset
TCK
TMS
TDI
TDO
TAP
Controller
State
3-State (TDO) or Don’t Care (TDI)
Figure 8. Timing Example
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VCC
0.5 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, VI: except TMS (see Note 1)
0.5 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TMS (see Note 1)
0.5 V to 12 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage range applied to any output in the disabled or power-off state
0.5 V to 5.5 V
. . . . . . . . . . . . . . . . . . . .
Voltage range applied to any output in the high state
0.5 V to VCC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input clamp current, IIK
30 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current into any output in the low state: SN54BCT8244A (TDO)
40 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN54BCT8244A (any Y)
96 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74BCT8244A (TDO)
48 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74BCT8244A (any Y)
128 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum power dissipation at TA = 55°C (in still air) (see Note 2): DW package
1.7 W
. . . . . . . . . . . . . . . . . .
NT package
1.3 W
. . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg
65
°C to 150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES:
1. The input voltage rating may be exceeded if the input clamp-current rating is observed.
2. The maximum package power dissipation is calculated using a junction temperature of 150
°C and a board trace length of 750 mils,
except for the NT package, which has a trace length of zero. For more information, refer to the Package Thermal Considerations
application note in the ABT Advanced BiCMOS Technology Data Book, literature number SCBD002.
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