JPH048536U - - Google Patents
Info
- Publication number
- JPH048536U JPH048536U JP4880190U JP4880190U JPH048536U JP H048536 U JPH048536 U JP H048536U JP 4880190 U JP4880190 U JP 4880190U JP 4880190 U JP4880190 U JP 4880190U JP H048536 U JPH048536 U JP H048536U
- Authority
- JP
- Japan
- Prior art keywords
- pull
- buffer
- transistor
- down resistor
- bidirectional
- 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
- 230000002457 bidirectional effect Effects 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 5
Description
第１図はこの考案の一実施例であるプルアツプ
抵抗付双方向バツフア回路の回路図、第２図はこ
の考案の他の実施例によるプルダウン抵抗付双方
向バツフア回路の回路図、第３図は従来のプルア
ツプ抵抗付双方向バツフア回路の回路図、第４図
は従来のプルダウン抵抗付双方向バツフア回路の
回路図である。
１……３ステイト出力バツフア、２……３ステ
イト入力バツフア、３……ｐｃｈトランジスタ、
４……ｎｃｈトランジスタ。なお、図中、同一符
号は同一、または相当部分を示す。
Fig. 1 is a circuit diagram of a bidirectional buffer circuit with a pull-up resistor according to an embodiment of this invention, Fig. 2 is a circuit diagram of a bi-directional buffer circuit with a pull-down resistor according to another embodiment of this invention, and Fig. 3 is a circuit diagram of a bidirectional buffer circuit with a pull-down resistor according to another embodiment of this invention. A circuit diagram of a conventional bidirectional buffer circuit with a pull-up resistor. FIG. 4 is a circuit diagram of a conventional bidirectional buffer circuit with a pull-down resistor. 1...3-state output buffer, 2...3-state input buffer, 3...pch transistor,
4...nch transistor. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.
Claims (1)
プ抵抗またはｎｃｈトランジスにより形成される
プルダウン抵抗を入力バツフアに有する双方向バ
ツフア回路において、３ステイトバツフアからな
る出力バツフアのコントロール信号によつて前記
ｐｃｈトランジスタまたはｎｃｈトランジスタを
コントロールすることを特徴とするプルアツプ・
プルダウン抵抗付双方向バツフア。 In a bidirectional buffer circuit having an input buffer including a pull-up resistor formed by a PCH transistor or a pull-down resistor formed by an NCH transistor, the PCH transistor or the NCH transistor is controlled by a control signal of an output buffer consisting of a 3-state buffer. Pull-up, which is characterized by
Bidirectional buffer with pull-down resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4880190U JPH048536U (en) | 1990-05-09 | 1990-05-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4880190U JPH048536U (en) | 1990-05-09 | 1990-05-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH048536U true JPH048536U (en) | 1992-01-27 |
Family
ID=31565939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4880190U Pending JPH048536U (en) | 1990-05-09 | 1990-05-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH048536U (en) |
-
1990
- 1990-05-09 JP JP4880190U patent/JPH048536U/ja active Pending