公开(公告)号：JPH1093416A

公开(公告)日：1998-04-10

申请号：JP10674597

申请日：1997-04-09

Applicant: MOTOROLA INC

Inventor： LUDWIG THOMAS RICHARD ,  NG RICHARD

IPC: H03K19/0175 ,  H03K19/0185 ,  H04B7/26

Abstract: PROBLEM TO BE SOLVED: To provide the bidirectional voltage translator in which no read/write control line is in use and the portability is improved by using a minimum number of electric components. SOLUTION: The bidirectional voltage converter 102 includes 1st ports 300/302, 2nd ports 302/300 and a switch circuit 310. A 1st signal is made communication with 1st voltage or 2nd voltages V1 /V2 at the 1st ports. A 2nd signal is made communication with the 1st voltage or 3rd voltages V2 /V1 at the 2nd ports. Then 2nd and 3rd voltages V1 , V2 are different from each other. The switch circuit 310 is coupled with the 1st and 2nd ports. The switch circuit 310 is used for the communication of the 2nd signal with the 1st voltage to the 3rd port in response to the 1st signal of the 1st voltage and the 2nd signals V2 /V1 of the 3rd voltage. The switch circuit 310 is used for the communication of the 1st signal with the 1st voltage to the 1st port in response to the 2nd signal of the 1st voltage and the 1st signals V1 /V2 of the 2nd voltage and the 2nd signal of the 1st voltage.

公开(公告)号：CA2202123C

公开(公告)日：1999-11-09

申请号：CA2202123

申请日：1997-04-08

Applicant: MOTOROLA INC

Inventor： LUDWIG THOMAS RICHARD ,  NG RICHARD

IPC: H03K19/0175 ,  H03K19/0185 ,  H04B7/26 ,  H03H11/02

Abstract: A bi-directional voltage translator (102) includes a first port (300/302), a second port (302/300), and a switch circuit (310). The first port (300/302) communicates a first signal at a first voltage or a second voltage (V1/V2). The second port (302/300) communicates a second signal at the first voltage or a third voltage (V2/V1). The second and third voltages (V1, V2) are different. The switch circuit (310) is coupled to the first port (300/302) and the second port (302/300). The switch circuit (310), responsive to the first signal at the first voltage and the second signal at the third voltage (V2/V1), communicates to the second port (302/300) the second signal at the first voltage. The switch circuit (310), responsive to the second signal at the first voltage and the first signal at the second voltage (V1/V2), communicates to the first port (300/302) the first signal at the first voltage.

公开(公告)号：CA2202123A1

公开(公告)日：1997-10-23

申请号：CA2202123

申请日：1997-04-08

Applicant: MOTOROLA INC

Inventor： NG RICHARD ,  LUDWIG THOMAS RICHARD

IPC: H03K19/0175 ,  H03K19/0185 ,  H04B7/26 ,  H03H11/02

Abstract: A bi-directional voltage translator (102) includes a first port (300/302), a second port (302/300), and a switch circuit (310). The first port (300/302) communicates a first signal at a first voltage or a second voltage (V1/V2). The second port (302/300) communicates a second signal at the first voltage or a third voltage (V2/V1). The second and third voltages (V1/V2) are different. The switch circuit (310) is coupled to the first port (300/302) and the second port (302/300). The switch circuit (310), responsive to the first signal at the first voltage and the second signal at the third voltage (V2/V1), communicates to the second port (302/300) the second signal at the first voltage. The switch circuit (310), responsive to the second signal at the first voltage and the first signal at the second voltage (V1/V2), communicates to the first port (300/302) the first signal at the first voltage.