JPS54136101A - Switching circuit - Google Patents

Switching circuit

Info

Publication number
JPS54136101A
JPS54136101A JP4269978A JP4269978A JPS54136101A JP S54136101 A JPS54136101 A JP S54136101A JP 4269978 A JP4269978 A JP 4269978A JP 4269978 A JP4269978 A JP 4269978A JP S54136101 A JPS54136101 A JP S54136101A
Authority
JP
Japan
Prior art keywords
voltage
terminal
supplied
giving
pin
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
Application number
JP4269978A
Other languages
Japanese (ja)
Inventor
Shoichi Shimizu
Kenichi Torii
Shigeo Fujimori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP4269978A priority Critical patent/JPS54136101A/en
Publication of JPS54136101A publication Critical patent/JPS54136101A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To decrease one pin of the external terminal and thus to reduce the size of the package form by giving a comparison between the output voltage supplied from the reference voltage generating part and the voltage from the input terminal to produce the control voltage and then giving the selective actuation to the circuit block.
CONSTITUTION: The voltage featuring different levels are supplied from outside to terminal 17 and then to reference voltage generating part 11 as well as to switching circuit 14. Part 11 delivers the constant voltage to line 16 via the voltage supplied from outside to drive circuit block 12 and 13, and circfit 14 compares the voltage delivered from part 11 and the voltage from terminal 17 to produce the control voltage which actuates selectively block 12 or 13 via line 151 or 152. Thus, one pin of the external terminal is decreased, accordingly reducing the size of the package form.
COPYRIGHT: (C)1979,JPO&Japio
JP4269978A 1978-04-13 1978-04-13 Switching circuit Pending JPS54136101A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4269978A JPS54136101A (en) 1978-04-13 1978-04-13 Switching circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4269978A JPS54136101A (en) 1978-04-13 1978-04-13 Switching circuit

Publications (1)

Publication Number Publication Date
JPS54136101A true JPS54136101A (en) 1979-10-23

Family

ID=12643291

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4269978A Pending JPS54136101A (en) 1978-04-13 1978-04-13 Switching circuit

Country Status (1)

Country Link
JP (1) JPS54136101A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05206785A (en) * 1992-01-24 1993-08-13 Fujitsu General Ltd Electronic unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05206785A (en) * 1992-01-24 1993-08-13 Fujitsu General Ltd Electronic unit

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