| 摘要 |
PURPOSE: To obtain a CMOS buffer circuit with small power consumption and excellent high frequency response characteristic by connecting two output pads with two load resistors and deciding an output voltage with a current flowing to them. CONSTITUTION: A high level (+4 V) signal is given to a 1st input terminal 9 and a low level (+3 V) signal is given to a 2nd input terminal 10, then a 1st PMOS transistor(TR) 11 and a 2nd NMOS TR 14 are conductive and a current of 10 mA flows through load resistors 17, 18 from a 1st output pad 15 to a 2nd output pad 16. Thus, a voltage of 1 V is produced between the load resistors 17, 18. Then the 1st output pad 15 keeps a high level (+4 V) and the 2nd output pad 16 keeps a low level (+3 V). Conversely a low level signal is given to the 1st input terminal 9 and a high level signal is given to the 2nd input terminal 10, then the 1st output pad 15 keeps a low level voltage and the 2nd output pad 16 keeps a high level voltage. |
