JPS6413623A - Carry signal look ahead circuit - Google Patents
Carry signal look ahead circuitInfo
- Publication number
- JPS6413623A JPS6413623A JP17004487A JP17004487A JPS6413623A JP S6413623 A JPS6413623 A JP S6413623A JP 17004487 A JP17004487 A JP 17004487A JP 17004487 A JP17004487 A JP 17004487A JP S6413623 A JPS6413623 A JP S6413623A
- Authority
- JP
- Japan
- Prior art keywords
- carry
- mosfet
- signal
- gate
- type mosfet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE:To quickly transmit carry by connecting two MOSFETs in series to the output of a carry signal look ahead CLA circuit and inputting the carry signal to the gate of the MOSFET on the output side and inputting a carry transmission control signal to the gate of the MOSFET on the power source or GND side. CONSTITUTION:A CLA circuit 2 is connected to a carry COUT8, and a NOR2 is used to convert carry transmission signals XC1-XC3 to one signal and this signal is inputted to the gate of an N-type MOSFET Q6 on the GND side, and a carry C0 is inputted to the gate of an N-type MOSFET Q5 in the output side. The other carrier COUT4 and COUT8 are operated similarly. When operation is started and signals XC2-XC4 go to the low level, a NOR3 outputs the high level to make an N-type MOSFET Q8 conductive. A carry COUT1 is inputted up to the carry COUT4 in parallel with this operation. Thus, the N-type MOSFET is made conductive, but a carry CIN13 is pulled down to the low level immediately at the time of arrival of carry because the MOSFET Q8 is first made conductive.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62170044A JPH0746311B2 (en) | 1987-07-07 | 1987-07-07 | Carry signal prefetch circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62170044A JPH0746311B2 (en) | 1987-07-07 | 1987-07-07 | Carry signal prefetch circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6413623A true JPS6413623A (en) | 1989-01-18 |
JPH0746311B2 JPH0746311B2 (en) | 1995-05-17 |
Family
ID=15897572
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62170044A Expired - Lifetime JPH0746311B2 (en) | 1987-07-07 | 1987-07-07 | Carry signal prefetch circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0746311B2 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62144241A (en) * | 1985-12-18 | 1987-06-27 | Mitsubishi Electric Corp | Adding circuit |
-
1987
- 1987-07-07 JP JP62170044A patent/JPH0746311B2/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62144241A (en) * | 1985-12-18 | 1987-06-27 | Mitsubishi Electric Corp | Adding circuit |
Also Published As
Publication number | Publication date |
---|---|
JPH0746311B2 (en) | 1995-05-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0358501A3 (en) | Programmable input/output circuit | |
JPS6413623A (en) | Carry signal look ahead circuit | |
ES8507746A1 (en) | A data processing system including an infra-red coupled remote data entry device. | |
JPS6460015A (en) | Flip flop circuit | |
DE3785857D1 (en) | CIRCUIT ARRANGEMENT FOR FREQUENCY DIVISION. | |
KR900008024B1 (en) | Transistor-transistor logic | |
JPS5698052A (en) | Base band two-way simultaneous transmission circuit | |
JPS5236904A (en) | Signal transmission circuit | |
JPS6423617A (en) | Fet capacitance driver logic circuit | |
DE3570936D1 (en) | Signalling circuit | |
EP0141203A3 (en) | An anti-droop infra-red transmitter circuit | |
JPS646878A (en) | Differential digital transmission line | |
JPS52137246A (en) | Transistor transistor logic circuit | |
JPS57168324A (en) | Bus control circuit | |
JPS5344145A (en) | Input-output-insulation-type signal transmission circuit | |
JPS53136927A (en) | Pulse generator circuit | |
JPS5365052A (en) | High speed logic circuit | |
JPS6481412A (en) | Input buffer circuit | |
JPS56162539A (en) | Signal-line driving circuit | |
JPS6489810A (en) | Flip-flop circuit | |
JPS5427701A (en) | Fail safe circuit of data transmitter | |
JPS6413811A (en) | Logic circuit | |
JPS56156017A (en) | Pulse generating circuit | |
JPS5541070A (en) | Ic drive unit | |
JPS5714233A (en) | Transmitting circuit |