发明名称 |
OUTPUT CIRCUIT AND INTERFACE SYSTEM COMPRISING THE SAME |
摘要 |
An output circuit 1 comprises a constant current source 11, a switch 12, and an output pad 14. The switch 12 is connected between the constant current source 11 and the output pad 14. A transmission path 3 is connected to the output pad 14. The transmission path 3 is coupled to a terminator voltage VTT by a resistor for pull up. Reflection of a signal or generation of noise can be suppressed by bringing the resistance value of the resistor 4 close to a characteristic impedance of the transmission path 3. A voltage amplitude on the transmission path 3 can be determined arbitrarily by adjusting current value of the constant current source 11 and resistance value of the resistor 4.
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申请公布号 |
US5235222(A) |
申请公布日期 |
1993.08.10 |
申请号 |
US19910813627 |
申请日期 |
1991.12.26 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
KONDOH, HARUFUSA;NOTANI, HIROMI |
分类号 |
H04L25/02;H03K19/003;H03K19/0175;H03K19/0185;H04Q3/42 |
主分类号 |
H04L25/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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