公开(公告)号：CA1205148A

公开(公告)日：1986-05-27

申请号：CA441050

申请日：1983-11-14

Applicant: IBM

Inventor： BLUMBERG RICHARD J ,  BRENNER STEWART ,  ROBORTACCIO ROCCO J

IPC: H03K19/013 ,  H03K19/088

Abstract: Improved TTL Logic Circuit Disclosed is the addition of passive feedback to a prior art T2L circuit The T2L circuit with feedback, in accordance with the invention, has a lower power dissipation while retaining noise immunity and small gate delay. The additional resistor required for the feedback T2L circuit, in accordance with the invention, can be incorporated into the T2L cell without increasing the cell size. The feedback T2L circuit, in accordance with the invention, lends itself to the addition of an integrated direct-coupled inverter (DCI) function. The feedback T2L circuit, in accordance with the invention, permits more function to be placed on an integrated circuit semiconductor chip while maintaining gate performance and adherence to power restrictions.

公开(公告)号：CA1089034A

公开(公告)日：1980-11-04

申请号：CA280302

申请日：1977-06-10

Applicant: IBM

Inventor： BLUMBERG RICHARD J ,  DORLER JACK A

IPC: H03K19/086 ,  H03K17/60 ,  H03K17/62 ,  H03K17/66 ,  H03K17/04

Abstract: CURRENT SWITCH CIRCUIT HAVING AN ACTIVE LOAD An improved current switch circuit which has an active load is disclosed. The active load comprises a current source at the collectors of switch transistors which generates a current which is less than the current generated by the current source at the emitters of the switch transistors. The active load also includes a circuit for supplying the current difference between source currents as a supplementary current to the current source at the emitters when the associated switch transistors are conductive and a circuit for diverting the source current at the collectors when the switch transistors are non-conduc-tive. Depending on the current generated by the current sources, the performance of the circuit can be selected to optimize power dissipation versus switching speed. The circuit uses a minimum of resistors and a minimum amount of semiconductor area and thereby ensures low power dissipation.

公开(公告)号：FR2356318A1

公开(公告)日：1978-01-20

申请号：FR7716037

申请日：1977-05-17

Applicant: IBM

Inventor： BLUMBERG RICHARD J ,  DORLER JACK A

IPC: H03K19/086 ,  H03K17/60 ,  H03K17/62 ,  H03K17/66

Abstract: CURRENT SWITCH CIRCUIT HAVING AN ACTIVE LOAD An improved current switch circuit which has an active load is disclosed. The active load comprises a current source at the collectors of switch transistors which generates a current which is less than the current generated by the current source at the emitters of the switch transistors. The active load also includes a circuit for supplying the current difference between source currents as a supplementary current to the current source at the emitters when the associated switch transistors are conductive and a circuit for diverting the source current at the collectors when the switch transistors are non-conduc-tive. Depending on the current generated by the current sources, the performance of the circuit can be selected to optimize power dissipation versus switching speed. The circuit uses a minimum of resistors and a minimum amount of semiconductor area and thereby ensures low power dissipation.