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    INPUT BUFFER CIRCUIT FOR RECEIVING MULTIPLE LEVEL INPUT VOLTAGES
    1.
    发明专利
    INPUT BUFFER CIRCUIT FOR RECEIVING MULTIPLE LEVEL INPUT VOLTAGES 未知

    公开(公告)号：CA1201491A

    公开(公告)日：1986-03-04

    申请号：CA464599

    申请日：1984-10-03

    Applicant: MOTOROLA INC

    Inventor： SMITH MICHAEL D ,  WHATLEY ROGER A ,  OLESIN ANDREW S

    IPC: H03K19/0175 ,  H03K19/0185 ,  H03K19/094 ,  H03K19/092

    Abstract: INPUT BUFFER CIRCUIT FOR RECEIVING MULTIPLE LEVEL INPUT VOLTAGES An input buffer circuit (10) having a single input for receiving input voltages (VIN) characterized by having varying voltage swings is provided. First (12 and 15) and second (16 and 18) inverter circuits having differing switchpoint voltages are coupled to a level shifting portion (13, 17). The level shifting portion varies the level of swing of the input voltage (VIN) and buffers the input voltage (VIN). In one form, voltage coupling circuitry (22, 23) is interposed between the level shifting portion and a latching portion (25, 26) which provides the input voltage (VIN) as an output signal at a predetermined voltage level. In another form, voltage coupling circuitry (48, 53) controlled by control circuitry (49, 50, 57) couples the output of the level shifting portion (43, 44) to an output in response to the input voltage (VIN).

    Input buffer circuit for receiving multiple level input voltages
    2.
    发明专利
    Input buffer circuit for receiving multiple level input voltages 未知

    公开(公告)号：SG23095G

    公开(公告)日：1995-08-18

    申请号：SG23095

    申请日：1995-02-11

    Applicant: MOTOROLA INC

    Inventor： SMITH MICHAEL ,  WHATLEY ROGER A ,  OLESIN ANDREW S

    IPC: H03K19/0175 ,  H03K19/0185 ,  H03K19/094 ,  H03K19/092

    Abstract: An input buffer circuit having a single input for receiving input voltages characterized by having varying voltage swings is provided. First and second inverter circuits having differing switchpoint voltages are coupled to a level shifting position. The level shifting portion varies the level of swing of the input voltage and buffers the input voltage. In one form, voltage coupling circuitry is interposed between the level shifting portion and a latching portion which provides the input voltage as an output signal at a predetermined voltage level. In another form, voltage coupling circuitry controlled by control circuitry couples the output of the level shifting portion to an output in response to the input voltage.

    Input buffer circuit for receiving multiple level input voltages
    3.
    发明专利
    Input buffer circuit for receiving multiple level input voltages 未知

    公开(公告)号：HK85495A

    公开(公告)日：1995-06-09

    申请号：HK85495

    申请日：1995-06-01

    Applicant: MOTOROLA INC

    Inventor： SMITH MICHAEL D ,  WHATLEY ROGER A ,  OLESIN ANDREW S

    IPC: H03K19/0175 ,  H03K19/0185 ,  H03K19/094

    Abstract: An input buffer circuit having a single input for receiving input voltages characterized by having varying voltage swings is provided. First and second inverter circuits having differing switchpoint voltages are coupled to a level shifting position. The level shifting portion varies the level of swing of the input voltage and buffers the input voltage. In one form, voltage coupling circuitry is interposed between the level shifting portion and a latching portion which provides the input voltage as an output signal at a predetermined voltage level. In another form, voltage coupling circuitry controlled by control circuitry couples the output of the level shifting portion to an output in response to the input voltage.

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