JPH028228U - - Google Patents
Info
- Publication number
- JPH028228U JPH028228U JP8707088U JP8707088U JPH028228U JP H028228 U JPH028228 U JP H028228U JP 8707088 U JP8707088 U JP 8707088U JP 8707088 U JP8707088 U JP 8707088U JP H028228 U JPH028228 U JP H028228U
- Authority
- JP
- Japan
- Prior art keywords
- buffering
- logic
- ics
- signal
- circuit
- 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.)
- Pending
Links
Landscapes
- Electronic Switches (AREA)
Description
第１図は、この考案の一実施例を示す論理信号
切換回路の回路図、第２図は、この考案の他の実
施例を示す論理信号切換回路の回路図、第３図は
、従来の論理信号切換回路の例を示す回路図であ
る。
Ｎ１・Ｎ２……Ｎ２ｎ：バツフアリングＩＣ、
Ｒ３・Ｒ４：プルアツプ抵抗、ｄ１・ｄ２……ｄ
２ｎ：ダイオード、Ｎ３：ＮＯＴ素子、Ｇ１：Ｏ
Ｒ回路。
Fig. 1 is a circuit diagram of a logic signal switching circuit showing one embodiment of this invention, Fig. 2 is a circuit diagram of a logic signal switching circuit showing another embodiment of this invention, and Fig. 3 is a circuit diagram of a conventional logic signal switching circuit. FIG. 2 is a circuit diagram showing an example of a logic signal switching circuit. N1・N2 ... N2n : Buffling IC,
R3・R4 : Pull-up resistance, d1・d2 ...d
2n : diode, N 3 : NOT element, G 1 : O
R circuit.
Claims (1)
的に変化する入力信号を個別に入力に受ける少な
くとも２個のオープンコレクタ形のバツフアリン
グＩＣと、これらバツフアリングＩＣの出力をプ
ルアツプする抵抗と、前記バツフアリングＩＣの
出力端にそれぞれ接続されるダイオードと、これ
らダイオードの一方と他方に互いに論理状態の相
違する切換指令信号を入力する切換指令信号入力
回路と、前記バツフアリングＩＣの出力端が入力
端に接続される論理和回路とからなる論理信号切
換回路。 at least two open collector type buffering ICs, each of which receives an input signal that changes binary between a first logic state and a second logic state; and a resistor that pulls up the outputs of these buffering ICs. , a switching command signal input circuit that inputs switching command signals having different logic states to one and the other of these diodes, and the output end of the buffering IC is an input terminal. A logic signal switching circuit consisting of an OR circuit connected to
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8707088U JPH028228U (en) | 1988-06-30 | 1988-06-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8707088U JPH028228U (en) | 1988-06-30 | 1988-06-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH028228U true JPH028228U (en) | 1990-01-19 |
Family
ID=31311704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8707088U Pending JPH028228U (en) | 1988-06-30 | 1988-06-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH028228U (en) |
-
1988
- 1988-06-30 JP JP8707088U patent/JPH028228U/ja active Pending
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