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   N° série générique : 75189
   Description : RS232 to TTL level shifter.A inputs are RS232-level inputs, C inputs are response control, a TTLsignal which could be used to adjust threshhold and hysteresis but isgenerally unnecessary and unused. It is often tied through a 300 - 470 pF capacitor to ground.

Broches :
____________
|            |
   1A| 1        14|  VCC
   1C| 2        13|   4A
   1Y| 3        12|   4C
   2A| 4        11|   4Y
   2C| 5        10|   3A
   2Y| 6         9|   3C
  GND| 7         8|   3Y
|____________|