SN54LVTH18514_17 Datasheet, PDF (24/38 Pages) Texas Instruments – 3.3-V ABT SCAN TEST DEVICES WITH 20-BIT UNIVERSAL BUS TRANSCEIVERS

SN54LVTH18514, SN54LVTH182514, SN74LVTH18514, SN74LVTH182514
3.3-V ABT SCAN TEST DEVICES
WITH 20-BIT UNIVERSAL BUS TRANSCEIVERS
SCBS670C – AUGUST 1996 – REVISED MARCH 1998
TCK
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
TMS
TTDDO_{ÎÎÎÎ}^I _{ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ}
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
TAP
Controller
State
ÎÎÎÎ_{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 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: SN54LVTH18514 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 mA
SN54LVTH182514 (A port or TDO) . . . . . . . . . . . . . . . . . . 96 mA
SN54LVTH182514 (B port) . . . . . . . . . . . . . . . . . . . . . . . . . 30 mA
SN74LVTH18514 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 mA
SN74LVTH182514 (A port or TDO) . . . . . . . . . . . . . . . . . 128 mA
SN74LVTH182514 (B port) . . . . . . . . . . . . . . . . . . . . . . . . . 30 mA
Current into any output in the high state, I_O (see Note 2): SN54LVTH18514 . . . . . . . . . . . . . . . . . . . . . 48 mA
SN54LVTH182514 (A port or TDO) . . . . . . 48 mA
SN54LVTH182514 (B port) . . . . . . . . . . . . . 30 mA
SN74LVTH18514 . . . . . . . . . . . . . . . . . . . . . 64 mA
SN74LVTH182514 (A port or TDO) . . . . . . 64 mA
SN74LVTH182514 (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, q_JA (see Note 3): DGG package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73°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 VO > VCC.
3. The package thermal impedance is calculated in accordance with JESD 51.
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