ZHCSR63I June 1999 – October 2022 SN65C3243 , SN75C3243
PRODUCTION DATA
| INPUTS | OUTPUT DOUT | DRIVER STATUS | |||
|---|---|---|---|---|---|
| DIN | FORCEON | FORCEOFF | VALID RIN RS-232 LEVEL | ||
| X | X | L | X | Z | Powered off |
| L | H | H | X | H | Normal operation with auto-powerdown disabled |
| H | H | H | X | L | |
| L | L | H | Yes | H | Normal operation with auto-powerdown enabled |
| H | L | H | Yes | L | |
| L | L | H | No | Z | Powered off by auto-powerdown feature |
| H | L | H | No | Z | |
| INPUTS | OUTPUTS | RECEIVER STATUS | |||||
|---|---|---|---|---|---|---|---|
| RIN2 | RIN1, RIN3–RIN5 | FORCEOFF | VALID RIN RS-232 LEVEL | ROUT2B | ROUT2 | ROUT1, ROUT3–5 | |
| L | X | L | X | L | Z | Z | Powered off while ROUT2B is active |
| H | X | L | X | H | Z | Z | |
| L | L | H | YES | L | H | H | Normal operation with auto-powerdown disabled/enabled |
| L | H | H | YES | L | L | L | |
| H | L | H | YES | H | H | H | |
| H | H | H | YES | H | L | L | |
| Open | Open | H | YES | L | H | H | |
Figure 8-1 Logic Diagram (Positive Logic)