SLLSE49E September 2010 – October 2024 SN65HVD1780-Q1 , SN65HVD1781-Q1 , SN65HVD1782-Q1
PRODUCTION DATA
The SN65HVD178x-Q1 family of RS-485 transceivers is designed to survive bus pin faults up to ±70V. The SN65HVD1782-Q1 device will not survive a bus pin fault with a direct short to voltages above 30V when all of the following occurs:
Under other conditions, the device survives shorts to bus pin faults up to ±70V. Table 7-1 summarizes the conditions under which the device may be damaged, and the conditions under which the device will not be damaged.
POWER | DE | D | A | B | RESULTS |
---|---|---|---|---|---|
OFF | X | X | –70V < VA < 70V | –70V < VB < 70V | Device survives |
ON | LO | X | –70V < VA < 70V | –70V < VB < 70V | Device survives |
ON | HI | L | –70V < VA < 70V | –70V < VB < 30V | Device survives |
ON | HI | L | –70V < VA < 70V | 30V < VB | Damage may occur |
ON | HI | H | –70V < VA < 30V | –70 V < VB < 30V | Device survives |
ON | HI | H | 30V < VA | –70V < VB < 30V | Damage may occur |