SN54LVTH18245, SN54LVTH182245, SN74LVTH18245, SN74LVTH182245
3.3-V ABT SCAN TEST DEVICES
WITH 18-BIT BUS TRANSCEIVERS
SCBS161C – AUGUST 1993 – REVISED JULY 1996
24
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 13. Timing Example
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
CC
Input voltage range, V
I
(see Note 1)
Voltage range applied to any output in the high state or power-off state, V
O
(see Note 1)
Current into any output in the low state, I
O
: SN54LVTH18245
SN54LVTH182245 (A port or TDO)
SN54LVTH182245 (B port)
SN74LVTH18245
SN74LVTH182245 (A port or TDO)
SN74LVTH182245 (B port)
Current into any output in the high state, I
O
(see Note 2): SN54LVTH18245
–0.5 V to 4.6 V
–0.5 V to 7 V
–0.5 V to 7 V
. . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
96 mA
96 mA
30 mA
128 mA
128 mA
30 mA
48 mA
48 mA
30 mA
64 mA
64 mA
30 mA
–50 mA
–50 mA
1 W
1.4 W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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. . . . . . . . . . . . . . . . . . . . . .
SN54LVTH182245 (A port or TDO)
SN54LVTH182245 (B port)
SN74LVTH18245
. . . . . . . . . . . . . . . . . . . . . .
SN74LVTH182245 (A port or TDO)
SN74LVTH182245 (B port)
. . . . . .
. . . . . . . . . . . . .
. . . . . .
. . . . . . . . . . . . .
Input clamp current, I
IK
(V
I
< 0)
Output clamp current, I
OK
(V
O
< 0)
Maximum power dissipation at T
A
= 55
°
C (in still air) (see Note 3):DGG package
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . .
DL 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 and output negative-voltage ratings can be exceeded if the input and output clamp-current ratings are observed.
2. This current will only flow when the output is in the high state and VO > VCC.
3. The maximum package power dissipation is calculated using a junction temperature of 150 C and a board trace length of 750 mils.
For more information, refer to the Package Thermal Considerationsapplication note in the ABT Advanced BiCMOS Technology Data
Book literature number SCBD002.
–65
°
C to 150
°
C
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P