Datasheet

SN54LVTH18502A, SN54LVTH182502A, SN74LVTH18502A, SN74LVTH182502A
3.3-V ABT SCAN TEST DEVICES
WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS
SCBS668C − JULY 1996 − REVISED JUNE 2004
25
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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
Test-Logic-Reset
Run-Test/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
Test-Logic-Reset
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
−0.5 V to 4.6 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, V
I
(see Note 1) −0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage range applied to any output in the high state or power-off state, V
O
(see Note 1) −0.5 V to 7 V. . . .
Current into any output in the low state, I
O
: SN54LVTH18502A 96 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN54LVTH182502A (A port or TDO) 96 mA. . . . . . . . . . . . . . . . .
SN54LVTH182502A (B port) 30 mA. . . . . . . . . . . . . . . . . . . . . . . .
SN74LVTH18502A 128 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74LVTH182502A (A port or TDO) 128 mA. . . . . . . . . . . . . . . .
SN74LVTH182502A (B port) 30 mA. . . . . . . . . . . . . . . . . . . . . . . .
Current into any output in the high state, I
O
(see Note 2): SN54LVTH18502A 48 mA. . . . . . . . . . . . . . . . . . . .
SN54LVTH182502A (A port or TDO) 48 mA. . . .
SN54LVTH182502A (B port) 30 mA. . . . . . . . . . .
SN74LVTH18502A 64 mA. . . . . . . . . . . . . . . . . . . .
SN74LVTH182502A (A port or TDO) 64 mA. . . .
SN74LVTH182502A (B port) 30 mA. . . . . . . . . . .
Input clamp current, I
IK
(V
I
< 0) −50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output clamp current, I
OK
(V
O
< 0) −50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance, θ
JA
(see Note 3): PM package 67°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
−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 and output negative-voltage ratings can be exceeded if the input and output clamp-current ratings are observed.
2. This current only flows when the output is in the high state and V
O
> V
CC
.
3. The package thermal impedance is calculated in accordance with JESD 51.