JPH0457771U - - Google Patents
Info
- Publication number
- JPH0457771U JPH0457771U JP10112390U JP10112390U JPH0457771U JP H0457771 U JPH0457771 U JP H0457771U JP 10112390 U JP10112390 U JP 10112390U JP 10112390 U JP10112390 U JP 10112390U JP H0457771 U JPH0457771 U JP H0457771U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- potential
- voltage dividing
- compares
- resistor
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Measurement Of Current Or Voltage (AREA)
Description
第１図は本考案による入力データ検出回路の一
実施例の回路図である。第２図は本考案による入
力データ検出回路の動作タイムチヤートである。
第３図は従来の入力データ検出回路の回路図であ
る。第４図は従来の入力データ検出回路のタイム
チヤートである。
４……スクイブ（第３の抵抗）、１０……論理
和回路、１１，１２，１３……分圧抵抗、１４，
１５……比較回路、１６……論理積回路。
FIG. 1 is a circuit diagram of an embodiment of an input data detection circuit according to the present invention. FIG. 2 is an operation time chart of the input data detection circuit according to the present invention.
FIG. 3 is a circuit diagram of a conventional input data detection circuit. FIG. 4 is a time chart of a conventional input data detection circuit. 4... Squib (third resistor), 10... OR circuit, 11, 12, 13... Voltage dividing resistor, 14,
15... Comparison circuit, 16... AND circuit.
Claims (1)
２の抵抗と、 この２つの抵抗の間に直列に挿入された第３の
抵抗と、 電源電圧を分圧し第１、第２の基準電位を作る
複数の分圧抵抗と、 前記第３の抵抗の電源側電位と前記第１の基準
電位を比較する第１の比較回路と、 前記第３の抵抗のアース側電位と前記第２の基
準電位を比較する第２の比較回路と、 前記第１、第２の比較回路の出力を入力する論
理和回路とを備えた入力データ検出回路において
、 前記複数の分圧抵抗のうち少なくとも、前記第
１、第２の分圧抵抗の間に挿入されて第３、第４
の基準電位を作る第３、第４の分圧抵抗と、 前記第３の抵抗の電源側電位と前記第３の基準
電位を比較する第３の比較回路と、 前記第３の抵抗のアース側電位と前記第４の基
準電位を比較する第４の比較回路と、 前記第３の比較回路と前記第４の比較回路の出
力を入力し出力を前記論理和回路に出力する論理
積回路とを備えたことを特徴とする入力データ検
出装置。[Claims for Utility Model Registration] First and second resistors connected in series between the power supply and ground, and a third resistor inserted in series between these two resistors, dividing the power supply voltage. a plurality of voltage dividing resistors that generate first and second reference potentials; a first comparison circuit that compares the power supply side potential of the third resistor with the first reference potential; An input data detection circuit comprising: a second comparison circuit that compares a ground side potential with the second reference potential; and an OR circuit that receives outputs of the first and second comparison circuits; Among the voltage dividing resistors, at least the third and fourth voltage dividing resistors are inserted between the first and second voltage dividing resistors.
third and fourth voltage dividing resistors that create a reference potential; a third comparator circuit that compares the power supply side potential of the third resistor with the third reference potential; and a ground side of the third resistor. a fourth comparison circuit that compares the potential with the fourth reference potential; and an AND circuit that inputs the outputs of the third comparison circuit and the fourth comparison circuit and outputs the output to the OR circuit. An input data detection device comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10112390U JP2508978Y2 (en) | 1990-09-27 | 1990-09-27 | Input data detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10112390U JP2508978Y2 (en) | 1990-09-27 | 1990-09-27 | Input data detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0457771U true JPH0457771U (en) | 1992-05-18 |
| JP2508978Y2 JP2508978Y2 (en) | 1996-08-28 |
Family
ID=31844312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10112390U Expired - Lifetime JP2508978Y2 (en) | 1990-09-27 | 1990-09-27 | Input data detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2508978Y2 (en) |
-
1990
- 1990-09-27 JP JP10112390U patent/JP2508978Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2508978Y2 (en) | 1996-08-28 |
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