公开(公告)号：EP0097857A2

公开(公告)日：1984-01-11

申请号：EP83105702.1

申请日：1983-06-10

申请人： International Business Machines Corporation

发明人： Freeman, Leo Boyes

IPC分类号： H03K5/02 ,  H03K5/15 ,  H03K17/60

CPC分类号： H03K5/02 ,  H03K17/603 ,  H03K19/0826

摘要： 57 Disclosed in a high performance current switch push-pull driver circuit. A first output of the current switch (T1, T2) is direct coupled to the push-pull driver (T5, T6) while the second output of the current switch is coupled to the push-pull driver by means of an emitter follower (T3) and current mirror (TM). Emitter followers (T3, T4) connected to the current switch (T1, T2) provide a first pair of true/ complement outputs (OUT1, OUT1) while push-pull drivers provide a second set of true/complementary outputs (OUT2, OUT2) having a higher drive capability. The current mirror (TM) is biased near its turn on potential providing current control switching of the current mode transistor and the push-pull driver transistor with which it is coupled. The circuit is greatly tolerant for varying load conditions, is protected against short circuit and power supply failures and has means for three state operation.

公开(公告)号：EP0242651A3

公开(公告)日：1990-01-10

申请号：EP87104810.4

申请日：1987-04-01

申请人： International Business Machines Corporation

发明人： Freeman, Leo Boyes

IPC分类号： H03K17/10

CPC分类号： H03K17/10 ,  H03K19/086

摘要： It is well known that the base width of a transistor has a direct bearing on transistor speed and the punch-through voltage. A solution to the transistor speed versus break down (punch through) voltage problem is disclosed. Output transistors are serially connected between power supply rails along with associated transistor base driving circuitry. The circuit arrangement ensures that the supply voltage divides between the series connected output transistors and prevents excessive voltage from being applied to each output transistor.

公开(公告)号：EP0097857A3

公开(公告)日：1985-03-13

申请号：EP83105702

申请日：1983-06-10

申请人： International Business Machines Corporation

发明人： Freeman, Leo Boyes

IPC分类号： H03K05/02 ,  H03K05/15 ,  H03K17/60

CPC分类号： H03K5/02 ,  H03K17/603 ,  H03K19/0826

摘要： 57 Disclosed in a high performance current switch push-pull driver circuit. A first output of the current switch (T1, T2) is direct coupled to the push-pull driver (T5, T6) while the second output of the current switch is coupled to the push-pull driver by means of an emitter follower (T3) and current mirror (TM). Emitter followers (T3, T4) connected to the current switch (T1, T2) provide a first pair of true/ complement outputs (OUT1, OUT1) while push-pull drivers provide a second set of true/complementary outputs (OUT2, OUT2) having a higher drive capability. The current mirror (TM) is biased near its turn on potential providing current control switching of the current mode transistor and the push-pull driver transistor with which it is coupled. The circuit is greatly tolerant for varying load conditions, is protected against short circuit and power supply failures and has means for three state operation.

公开(公告)号：EP0242651B1

公开(公告)日：1993-02-10

申请号：EP87104810.4

申请日：1987-04-01

申请人： International Business Machines Corporation

发明人： Freeman, Leo Boyes

IPC分类号： H03K17/10

CPC分类号： H03K17/10 ,  H03K19/086

公开(公告)号：EP0097857B1

公开(公告)日：1987-11-04

申请号：EP83105702.1

申请日：1983-06-10

申请人： International Business Machines Corporation

发明人： Freeman, Leo Boyes

IPC分类号： H03K5/02 ,  H03K5/15 ,  H03K17/60

CPC分类号： H03K5/02 ,  H03K17/603 ,  H03K19/0826

公开(公告)号：EP0242651A2

公开(公告)日：1987-10-28

申请号：EP87104810.4

申请日：1987-04-01

申请人： International Business Machines Corporation

发明人： Freeman, Leo Boyes

IPC分类号： H03K17/10

CPC分类号： H03K17/10 ,  H03K19/086

摘要： It is well known that the base width of a transistor has a direct bearing on transistor speed and the punch-through voltage. A solution to the transistor speed versus break down (punch through) voltage problem is disclosed. Output transistors are serially connected between power supply rails along with associated transistor base driving circuitry. The circuit arrangement ensures that the supply voltage divides between the series connected output transistors and prevents excessive voltage from being applied to each output transistor.

摘要翻译： 众所周知做了晶体管的基极宽度对晶体管的速度和穿通电压有直接关系。 的溶液到晶体管速度对击穿（穿通）电压是问题的游离缺失盘。 输出晶体管（T10，T11）串联连接在电源轨地连同相关联的晶体管的基极驱动电路之间。 该电路布置确保没有串联连接的输出晶体管之间的电源电压分和被施加到各输出晶体管防止了过量的电压。