Method for controlling delays in silicon on insulator circuits

• US 6,111,455 A
• Filed: 12/30/1998
• Issued: 08/29/2000
• Est. Priority Date: 12/30/1998
• Status: Expired due to Fees

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Eleyan, Nadeem, Sharma, Harsh
• Primary Examiner(s): TRAN, TOAN V
• Application Number:
  US09/223,702
• Time in Patent Office: 608 Days
• Field of Search: 327/534, 327/535, 327/537, 327/270, 327/276, 327/278, 327/281, 327/170, 327/134, 327/108, 327/111, 327/112
• US Class Current: 327/537
• CPC Class Codes: H03K 17/163 Soft switching

Abstract

A method for controlling delays in silicon on insulator circuits is disclosed. A semiconductor integrated circuit device comprises a first circuit and a second circuit. The first circuit includes multiple transistors, some of which have a floating body. In addition, the first circuit includes an input and an output. The second circuit is selectively coupled to a floating body of some of the transistors in the first circuit in order to control the delay of the output of the first circuit.

Claims

1. A semiconductor integrated circuit device, comprising:

a static circuit having a plurality of p-channel and n-channel transistors, each of said transistors has a floating body, wherein said static circuit includes an input and an output;

a rise delay control circuit coupled to a floating body of said p-channel transistors in said static circuit for selectively controlling delays of a rising output signal at said output of said static circuit via a rise delay signal; and

a fall delay control circuit coupled to a floating body of said n-channel transistors in said static circuit for selectively controlling delays of a falling output signal at said output of said static circuit via a fall delay signal;

wherein each of said rise delay control circuit and said fall delay control circuit includes a transistor pair.

2. The semiconductor integrated circuit device according to claim 1, wherein said static circuit is manufactured with silicon on insulator processing technology.

3. The semiconductor integrated circuit device according to claim 1, wherein said transistor pair includes a p-channel and an n-channel transistor connected in an invertor configuration.

4. A semiconductor integrated circuit device, comprising:

a dynamic circuit having a precharge transistor and an isolation transistor, each of said transistors has a floating body and a gate connected to a clock signal, wherein said dynamic circuit includes a logic circuit connected in series between the precharge transistor and the isolation transistor;

wherein the logic circuit has an output and at least one input;

a rise delay control circuit coupled only to a floating body of said precharge transistor in said dynamic circuit for selectively controlling delays of a rising output signal at said output of said dynamic circuit via a rise delay signal; and

a fall delay control circuit coupled only to a floating body of said isolation transistor in said dynamic circuit for selectively controlling delays of a falling output signal at said output of said dynamic circuit via a fall delay signal;

wherein each of said rise delay control circuit and said fall delay control circuit includes a transistor pair.

5. The semiconductor integrated circuit device according to claim 4, wherein said dynamic circuit is manufactured with silicon on insulator processing technology.

6. The semiconductor integrated circuit device according to claim 4, wherein said precharge transistor is a p-channel transistor and said isolation transistor is an n-channel transistor.

7. The semiconductor integrated circuit device according to claim 4, wherein said transistor pair includes a p-channel and an n-channel transistor connected in an invertor configuration.

8. A semiconductor integrated circuit device, comprising:

a transmission gate circuit having a p-channel transistor and an n-channel transistor connected in parallel, each of said transistors has a floating body, wherein said transmission gate circuit has an input and an output;

a rise delay control circuit coupled to a floating body of said p-channel transistor in said transmission gate circuit for selectively controlling delays of a rising output signal at said output of said transmission gate circuit via a rise delay signal; and

a fall delay control circuit coupled to a floating body of said n-channel transistor in said transmission gate circuit for selectively controlling delays of a falling output signal at said output of said transmission gate circuit via a fall delay signal;

wherein each of said rise delay control circuit and said fall delay control circuit includes a transistor pair.

9. The semiconductor integrated circuit device according to claim 8, wherein said transmission gate circuit is manufactured with silicon on insulator processing technology.

10. The semiconductor integrated circuit device according to claim 8, wherein said transistor pair includes a p-channel and an n-channel transistor connected in an invertor configuration.