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SN65HVD75: Absolute maximum rating for VCC pin

Guru 19785 points
Part Number: SN65HVD75
Other Parts Discussed in Thread: SN65HVD72

Hi Team,

Based on the SN65HVD75 PCN this month, we have several questions from customers.

Could you please give us the information and opinion about the following items ?

1). Why did the absolute maximum rating (AMR) decreased down to 3.6V at this timing ? What is the background ? SN65HVD72/75/78 are released in 2012.

2). Is there any design change to the device ?

3). Is there any other device which is planned to have (or had) similar PCN in the RS-485 devices ?

4). What is TI opinion for the device reliability point of view ?

If "absolute maximum rating (MAX)" = "Recommended Operating Conditions (MAX)", I think there is not enough margin in the point of reliability. Customer chooses device with margin.

Vcc= 3.3V+/-5% supply could be used, however, transient response (overshoot/undershoot) may not be able to be handled if this 3.3V is used as common 3.3V bus with other devices.

Best Regards,
Kawai