| PARAMETER |
MIN |
MAX |
UNIT |
| INPUT CONDITIONS |
| SRI |
Input Slew Rate |
0.5 |
5 |
V/ns |
| OUTPUT CONDITIONS |
| CL |
Output Load Capacitance |
1 |
30(1) |
pF |
(1) This value represents an absolute maximum load capacitance. As the UART baud rate increases, it may be necessary to reduce the load capacitance to a value less than this maximum limit to provide enough timing margin for the attached device. The output rise/fall times increase as capacitive load increases, which decreases the time data is valid for the receiver of the attached devices. Therefore, it is important to understand the minimum data valid time required by the attached device at the operating baud rate. Then use the device IBIS models to verify the actual load capacitance on the UART signals does not increase the rise/fall times beyond the point where the minimum data valid time of the attached device is violated.