參數(shù)資料
型號(hào)： SN54BCT8240AJT
廠商： Texas Instruments, Inc.
英文描述： SCAN TEST DEVICES WITH OCTAL INVERTING BUFFERS
中文描述： 掃描測(cè)試設(shè)備與八進(jìn)制反向緩沖器
文件頁(yè)數(shù)： 15/26頁(yè)
文件大?。?/td> 473K
代理商： SN54BCT8240AJT
SN54BCT8240A, SN74BCT8240A
SCAN TEST DEVICES
WITH OCTAL INVERTING BUFFERS
SCBS067E – FEBRUARY 1990 – REVISED DECEMBER 1996
15
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
E
E
T
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
R
S
S
C
S
U
S
C
S
U
S
S
T
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, V
CC
Input voltage range, V
I
: except TMS (see Note 1)
TMS (see Note 1)
Voltage range applied to any output in the disabled or power-off state
Voltage range applied to any output in the high state
Input clamp current, I
IK
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current into any output in the low state: SN54BCT8240A (TDO)
SN54BCT8240A (any Y)
SN74BCT8240A (TDO)
SN74BCT8240A (any Y)
Maximum power dissipation at T
A
= 55
°
C (in still air) (see Note 2): DW package
–0.5 V to 7 V
–0.5 V to 7 V
–0.5 V to 12 V
–0.5 V to 5.5 V
–0.5 V to V
CC
–30 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
40 mA
96 mA
48 mA
128 mA
1.7 W
1.3 W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . .
NT package
. . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
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 trace length of zero. For more information, refer to the Package Thermal Considerations
application note in the ABT Advanced BiCMOS Technology Data Book, iterature number SCBD002.
–65
°
C to 150
°
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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